| Commit message (Collapse) | Author | Age |
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Bug: 67506682
Change-Id: I6f615164ccd86b407540ada9bbcb39d910395db9
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
(cherry picked from commit 4fd840d1743308b2ef470534523009dd99b3ce2b)
Signed-off-by: Dan Aloni <daloni@magicleap.com>
Signed-off-by: Davide Garberi <dade.garberi@gmail.com>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-06000-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
7a9986e91f909 UPSTREAM: binder: fix UAF when releasing todo list
Conflicts:
fs/eventpoll.c
Change-Id: I77260d03cb539d7e7eefcea360aee2d59bb9e0cb
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[ Upstream commit faffdfa04fa11ccf048cebdde73db41ede0679e0 ]
Mount failure issue happens under the scenario: Application forked dozens
of threads to mount the same number of cramfs images separately in docker,
but several mounts failed with high probability. Mount failed due to the
checking result of the page(read from the superblock of loop dev) is not
uptodate after wait_on_page_locked(page) returned in function cramfs_read:
wait_on_page_locked(page);
if (!PageUptodate(page)) {
...
}
The reason of the checking result of the page not uptodate: systemd-udevd
read the loopX dev before mount, because the status of loopX is Lo_unbound
at this time, so loop_make_request directly trigger the calling of io_end
handler end_buffer_async_read, which called SetPageError(page). So It
caused the page can't be set to uptodate in function
end_buffer_async_read:
if(page_uptodate && !PageError(page)) {
SetPageUptodate(page);
}
Then mount operation is performed, it used the same page which is just
accessed by systemd-udevd above, Because this page is not uptodate, it
will launch a actual read via submit_bh, then wait on this page by calling
wait_on_page_locked(page). When the I/O of the page done, io_end handler
end_buffer_async_read is called, because no one cleared the page
error(during the whole read path of mount), which is caused by
systemd-udevd reading, so this page is still in "PageError" status, which
can't be set to uptodate in function end_buffer_async_read, then caused
mount failure.
But sometimes mount succeed even through systemd-udeved read loopX dev
just before, The reason is systemd-udevd launched other loopX read just
between step 3.1 and 3.2, the steps as below:
1, loopX dev default status is Lo_unbound;
2, systemd-udved read loopX dev (page is set to PageError);
3, mount operation
1) set loopX status to Lo_bound;
==>systemd-udevd read loopX dev<==
2) read loopX dev(page has no error)
3) mount succeed
As the loopX dev status is set to Lo_bound after step 3.1, so the other
loopX dev read by systemd-udevd will go through the whole I/O stack, part
of the call trace as below:
SYS_read
vfs_read
do_sync_read
blkdev_aio_read
generic_file_aio_read
do_generic_file_read:
ClearPageError(page);
mapping->a_ops->readpage(filp, page);
here, mapping->a_ops->readpage() is blkdev_readpage. In latest kernel,
some function name changed, the call trace as below:
blkdev_read_iter
generic_file_read_iter
generic_file_buffered_read:
/*
* A previous I/O error may have been due to temporary
* failures, eg. mutipath errors.
* Pg_error will be set again if readpage fails.
*/
ClearPageError(page);
/* Start the actual read. The read will unlock the page*/
error=mapping->a_ops->readpage(flip, page);
We can see ClearPageError(page) is called before the actual read,
then the read in step 3.2 succeed.
This patch is to add the calling of ClearPageError just before the actual
read of read path of cramfs mount. Without the patch, the call trace as
below when performing cramfs mount:
do_mount
cramfs_read
cramfs_blkdev_read
read_cache_page
do_read_cache_page:
filler(data, page);
or
mapping->a_ops->readpage(data, page);
With the patch, the call trace as below when performing mount:
do_mount
cramfs_read
cramfs_blkdev_read
read_cache_page:
do_read_cache_page:
ClearPageError(page); <== new add
filler(data, page);
or
mapping->a_ops->readpage(data, page);
With the patch, mount operation trigger the calling of
ClearPageError(page) before the actual read, the page has no error if no
additional page error happen when I/O done.
Signed-off-by: Xianting Tian <xianting_tian@126.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Jan Kara <jack@suse.cz>
Cc: <yubin@h3c.com>
Link: http://lkml.kernel.org/r/1583318844-22971-1-git-send-email-xianting_tian@126.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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* refs/heads/tmp-ef0b39d
commit e82b9b0727ff ("vhost: introduce vhost_exceeds_weight()")
Linux 4.4.201
drm/i915/cmdparser: Fix jump whitelist clearing
drm/i915/gen8+: Add RC6 CTX corruption WA
drm/i915: Lower RM timeout to avoid DSI hard hangs
drm/i915/cmdparser: Ignore Length operands during command matching
drm/i915/cmdparser: Add support for backward jumps
drm/i915: Add gen9 BCS cmdparsing
drm/i915: Allow parsing of unsized batches
drm/i915: Support ro ppgtt mapped cmdparser shadow buffers
drm/i915: Add support for mandatory cmdparsing
drm/i915: Remove Master tables from cmdparser
drm/i915: Disable Secure Batches for gen6+
drm/i915: Rename gen7 cmdparser tables
drm/i915/gtt: Disable read-only support under GVT
drm/i915/gtt: Read-only pages for insert_entries on bdw+
drm/i915/gtt: Add read only pages to gen8_pte_encode
net: prevent load/store tearing on sk->sk_stamp
cgroup,writeback: don't switch wbs immediately on dead wbs if the memcg is dead
mm/filemap.c: don't initiate writeback if mapping has no dirty pages
can: flexcan: disable completely the ECC mechanism
e1000: fix memory leaks
igb: Fix constant media auto sense switching when no cable is connected
NFSv4: Don't allow a cached open with a revoked delegation
net: hisilicon: Fix "Trying to free already-free IRQ"
scsi: qla2xxx: stop timer in shutdown path
USB: Skip endpoints with 0 maxpacket length
perf/x86/amd/ibs: Fix reading of the IBS OpData register and thus precise RIP validity
usb: gadget: configfs: fix concurrent issue between composite APIs
usb: gadget: composite: Fix possible double free memory bug
usb: gadget: udc: atmel: Fix interrupt storm in FIFO mode.
usb: fsl: Check memory resource before releasing it
bonding: fix unexpected IFF_BONDING bit unset
ipvs: move old_secure_tcp into struct netns_ipvs
scsi: lpfc: Honor module parameter lpfc_use_adisc
scsi: qla2xxx: fixup incorrect usage of host_byte
PCI: tegra: Enable Relaxed Ordering only for Tegra20 & Tegra30
configfs: fix a deadlock in configfs_symlink()
drivers: usb: usbip: Add missing break statement to switch
can: peak_usb: fix slab info leak
can: gs_usb: gs_can_open(): prevent memory leak
can: peak_usb: fix a potential out-of-sync while decoding packets
can: c_can: c_can_poll(): only read status register after status IRQ
can: usb_8dev: fix use-after-free on disconnect
netfilter: ipset: Fix an error code in ip_set_sockfn_get()
netfilter: nf_tables: Align nft_expr private data to 64-bit
iio: imu: adis16480: make sure provided frequency is positive
ceph: fix use-after-free in __ceph_remove_cap()
drm/radeon: fix si_enable_smc_cac() failed issue
perf tools: Fix time sorting
dump_stack: avoid the livelock of the dump_lock
mm, vmstat: hide /proc/pagetypeinfo from normal users
ALSA: hda/ca0132 - Fix possible workqueue stall
ALSA: bebob: fix to detect configured source of sampling clock for Focusrite Saffire Pro i/o series
nfc: netlink: fix double device reference drop
qede: fix NULL pointer deref in __qede_remove()
NFC: st21nfca: fix double free
NFC: fdp: fix incorrect free object
net: fix data-race in neigh_event_send()
CDC-NCM: handle incomplete transfer of MTU
Fixed build error of unused functions like configfs_composite_setup()
Spinlock is not initialized in commit
'usb: gadget: configfs: fix concurrent issue between composite APIs'
due to this device is crashing with spinlock bad magic , fixed it by initialyzing spinlock.
Change-Id: I60ef410910744b0b9e33b2968f1cfbacb7fea446
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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commit c3aab9a0bd91b696a852169479b7db1ece6cbf8c upstream.
Functions like filemap_write_and_wait_range() should do nothing if inode
has no dirty pages or pages currently under writeback. But they anyway
construct struct writeback_control and this does some atomic operations if
CONFIG_CGROUP_WRITEBACK=y - on fast path it locks inode->i_lock and
updates state of writeback ownership, on slow path might be more work.
Current this path is safely avoided only when inode mapping has no pages.
For example generic_file_read_iter() calls filemap_write_and_wait_range()
at each O_DIRECT read - pretty hot path.
This patch skips starting new writeback if mapping has no dirty tags set.
If writeback is already in progress filemap_write_and_wait_range() will
wait for it.
Link: http://lkml.kernel.org/r/156378816804.1087.8607636317907921438.stgit@buzz
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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lock_page() must operate on the whole compound page. It doesn't make
much sense to lock part of compound page. Change code to use head
page's PG_locked, if tail page is passed.
This patch also gets rid of custom helper functions --
__set_page_locked() and __clear_page_locked(). They are replaced with
helpers generated by __SETPAGEFLAG/__CLEARPAGEFLAG. Tail pages to these
helper would trigger VM_BUG_ON().
SLUB uses PG_locked as a bit spin locked. IIUC, tail pages should never
appear there. VM_BUG_ON() is added to make sure that this assumption is
correct.
[akpm@linux-foundation.org: fix fs/cifs/file.c]
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Christoph Lameter <cl@linux.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Steve Capper <steve.capper@linaro.org>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Change-Id: Ifeeb98c789880ff34b286383568db60e08672205
Git-Commit: 48c935ad88f5be20eb5445a77c171351b1eb5111
Git-Repo: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
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* refs/heads/tmp-8ec9fd8
ANDROID: sdcardfs: Check stacked filesystem depth
Fix backport of "tcp: detect malicious patterns in tcp_collapse_ofo_queue()"
tcp: detect malicious patterns in tcp_collapse_ofo_queue()
tcp: avoid collapses in tcp_prune_queue() if possible
x86_64_cuttlefish_defconfig: Enable android-verity
x86_64_cuttlefish_defconfig: enable verity cert
Linux 4.4.142
perf tools: Move syscall number fallbacks from perf-sys.h to tools/arch/x86/include/asm/
x86/cpu: Probe CPUID leaf 6 even when cpuid_level == 6
Kbuild: fix # escaping in .cmd files for future Make
ANDROID: Fix massive cpufreq_times memory leaks
ANDROID: Reduce use of #ifdef CONFIG_CPU_FREQ_TIMES
UPSTREAM: binder: replace "%p" with "%pK"
UPSTREAM: binder: free memory on error
UPSTREAM: binder: fix proc->files use-after-free
UPSTREAM: Revert "FROMLIST: binder: fix proc->files use-after-free"
UPSTREAM: ANDROID: binder: change down_write to down_read
UPSTREAM: ANDROID: binder: correct the cmd print for BINDER_WORK_RETURN_ERROR
UPSTREAM: ANDROID: binder: remove 32-bit binder interface.
UPSTREAM: ANDROID: binder: re-order some conditions
UPSTREAM: android: binder: use VM_ALLOC to get vm area
UPSTREAM: android: binder: Use true and false for boolean values
UPSTREAM: android: binder: Use octal permissions
UPSTREAM: android: binder: Prefer __func__ to using hardcoded function name
UPSTREAM: ANDROID: binder: make binder_alloc_new_buf_locked static and indent its arguments
UPSTREAM: android: binder: Check for errors in binder_alloc_shrinker_init().
treewide: Use array_size in f2fs_kvzalloc()
treewide: Use array_size() in f2fs_kzalloc()
treewide: Use array_size() in f2fs_kmalloc()
overflow.h: Add allocation size calculation helpers
f2fs: fix to clear FI_VOLATILE_FILE correctly
f2fs: let sync node IO interrupt async one
f2fs: don't change wbc->sync_mode
f2fs: fix to update mtime correctly
fs: f2fs: insert space around that ':' and ', '
fs: f2fs: add missing blank lines after declarations
fs: f2fs: changed variable type of offset "unsigned" to "loff_t"
f2fs: clean up symbol namespace
f2fs: make set_de_type() static
f2fs: make __f2fs_write_data_pages() static
f2fs: fix to avoid accessing cross the boundary
f2fs: fix to let caller retry allocating block address
disable loading f2fs module on PAGE_SIZE > 4KB
f2fs: fix error path of move_data_page
f2fs: don't drop dentry pages after fs shutdown
f2fs: fix to avoid race during access gc_thread pointer
f2fs: clean up with clear_radix_tree_dirty_tag
f2fs: fix to don't trigger writeback during recovery
f2fs: clear discard_wake earlier
f2fs: let discard thread wait a little longer if dev is busy
f2fs: avoid stucking GC due to atomic write
f2fs: introduce sbi->gc_mode to determine the policy
f2fs: keep migration IO order in LFS mode
f2fs: fix to wait page writeback during revoking atomic write
f2fs: Fix deadlock in shutdown ioctl
f2fs: detect synchronous writeback more earlier
mm: remove nr_pages argument from pagevec_lookup_{,range}_tag()
ceph: use pagevec_lookup_range_nr_tag()
mm: add variant of pagevec_lookup_range_tag() taking number of pages
mm: use pagevec_lookup_range_tag() in write_cache_pages()
mm: use pagevec_lookup_range_tag() in __filemap_fdatawait_range()
nilfs2: use pagevec_lookup_range_tag()
gfs2: use pagevec_lookup_range_tag()
f2fs: use find_get_pages_tag() for looking up single page
f2fs: simplify page iteration loops
f2fs: use pagevec_lookup_range_tag()
ext4: use pagevec_lookup_range_tag()
ceph: use pagevec_lookup_range_tag()
btrfs: use pagevec_lookup_range_tag()
mm: implement find_get_pages_range_tag()
f2fs: clean up with is_valid_blkaddr()
f2fs: fix to initialize min_mtime with ULLONG_MAX
f2fs: fix to let checkpoint guarantee atomic page persistence
f2fs: fix to initialize i_current_depth according to inode type
Revert "f2fs: add ovp valid_blocks check for bg gc victim to fg_gc"
f2fs: don't drop any page on f2fs_cp_error() case
f2fs: fix spelling mistake: "extenstion" -> "extension"
f2fs: enhance sanity_check_raw_super() to avoid potential overflows
f2fs: treat volatile file's data as hot one
f2fs: introduce release_discard_addr() for cleanup
f2fs: fix potential overflow
f2fs: rename dio_rwsem to i_gc_rwsem
f2fs: move mnt_want_write_file after range check
f2fs: fix missing clear FI_NO_PREALLOC in some error case
f2fs: enforce fsync_mode=strict for renamed directory
f2fs: sanity check for total valid node blocks
f2fs: sanity check on sit entry
f2fs: avoid bug_on on corrupted inode
f2fs: give message and set need_fsck given broken node id
f2fs: clean up commit_inmem_pages()
f2fs: do not check F2FS_INLINE_DOTS in recover
f2fs: remove duplicated dquot_initialize and fix error handling
f2fs: stop issue discard if something wrong with f2fs
f2fs: fix return value in f2fs_ioc_commit_atomic_write
f2fs: allocate hot_data for atomic write more strictly
f2fs: check if inmem_pages list is empty correctly
f2fs: fix race in between GC and atomic open
f2fs: change le32 to le16 of f2fs_inode->i_extra_size
f2fs: check cur_valid_map_mir & raw_sit block count when flush sit entries
f2fs: correct return value of f2fs_trim_fs
f2fs: fix to show missing bits in FS_IOC_GETFLAGS
f2fs: remove unneeded F2FS_PROJINHERIT_FL
f2fs: don't use GFP_ZERO for page caches
f2fs: issue all big range discards in umount process
f2fs: remove redundant block plug
f2fs: remove unmatched zero_user_segment when convert inline dentry
f2fs: introduce private inode status mapping
fscrypt: log the crypto algorithm implementations
crypto: api - Add crypto_type_has_alg helper
crypto: skcipher - Add low-level skcipher interface
crypto: skcipher - Add helper to retrieve driver name
crypto: skcipher - Add default key size helper
fscrypt: add Speck128/256 support
fscrypt: only derive the needed portion of the key
fscrypt: separate key lookup from key derivation
fscrypt: use a common logging function
fscrypt: remove internal key size constants
fscrypt: remove unnecessary check for non-logon key type
fscrypt: make fscrypt_operations.max_namelen an integer
fscrypt: drop empty name check from fname_decrypt()
fscrypt: drop max_namelen check from fname_decrypt()
fscrypt: don't special-case EOPNOTSUPP from fscrypt_get_encryption_info()
fscrypt: don't clear flags on crypto transform
fscrypt: remove stale comment from fscrypt_d_revalidate()
fscrypt: remove error messages for skcipher_request_alloc() failure
fscrypt: remove unnecessary NULL check when allocating skcipher
fscrypt: clean up after fscrypt_prepare_lookup() conversions
fscrypt: use unbound workqueue for decryption
f2fs: run fstrim asynchronously if runtime discard is on
f2fs: turn down IO priority of discard from background
f2fs: don't split checkpoint in fstrim
f2fs: issue discard commands proactively in high fs utilization
f2fs: add fsync_mode=nobarrier for non-atomic files
f2fs: let fstrim issue discard commands in lower priority
f2fs: avoid fsync() failure caused by EAGAIN in writepage()
f2fs: clear PageError on writepage - part 2
f2fs: check cap_resource only for data blocks
Revert "f2fs: introduce f2fs_set_page_dirty_nobuffer"
f2fs: clear PageError on writepage
f2fs: call unlock_new_inode() before d_instantiate()
f2fs: refactor read path to allow multiple postprocessing steps
fscrypt: allow synchronous bio decryption
f2fs: remain written times to update inode during fsync
f2fs: make assignment of t->dentry_bitmap more readable
f2fs: truncate preallocated blocks in error case
f2fs: fix a wrong condition in f2fs_skip_inode_update
f2fs: reserve bits for fs-verity
f2fs: Add a segment type check in inplace write
f2fs: no need to initialize zero value for GFP_F2FS_ZERO
f2fs: don't track new nat entry in nat set
f2fs: clean up with F2FS_BLK_ALIGN
f2fs: check blkaddr more accuratly before issue a bio
f2fs: Set GF_NOFS in read_cache_page_gfp while doing f2fs_quota_read
f2fs: introduce a new mount option test_dummy_encryption
f2fs: introduce F2FS_FEATURE_LOST_FOUND feature
f2fs: release locks before return in f2fs_ioc_gc_range()
f2fs: align memory boundary for bitops
f2fs: remove unneeded set_cold_node()
f2fs: add nowait aio support
f2fs: wrap all options with f2fs_sb_info.mount_opt
f2fs: Don't overwrite all types of node to keep node chain
f2fs: introduce mount option for fsync mode
f2fs: fix to restore old mount option in ->remount_fs
f2fs: wrap sb_rdonly with f2fs_readonly
f2fs: avoid selinux denial on CAP_SYS_RESOURCE
f2fs: support hot file extension
f2fs: fix to avoid race in between atomic write and background GC
f2fs: do gc in greedy mode for whole range if gc_urgent mode is set
f2fs: issue discard aggressively in the gc_urgent mode
f2fs: set readdir_ra by default
f2fs: add auto tuning for small devices
f2fs: add mount option for segment allocation policy
f2fs: don't stop GC if GC is contended
f2fs: expose extension_list sysfs entry
f2fs: fix to set KEEP_SIZE bit in f2fs_zero_range
f2fs: introduce sb_lock to make encrypt pwsalt update exclusive
f2fs: remove redundant initialization of pointer 'p'
f2fs: flush cp pack except cp pack 2 page at first
f2fs: clean up f2fs_sb_has_xxx functions
f2fs: remove redundant check of page type when submit bio
f2fs: fix to handle looped node chain during recovery
f2fs: handle quota for orphan inodes
f2fs: support passing down write hints to block layer with F2FS policy
f2fs: support passing down write hints given by users to block layer
f2fs: fix to clear CP_TRIMMED_FLAG
f2fs: support large nat bitmap
f2fs: fix to check extent cache in f2fs_drop_extent_tree
f2fs: restrict inline_xattr_size configuration
f2fs: fix heap mode to reset it back
f2fs: fix potential corruption in area before F2FS_SUPER_OFFSET
fscrypt: fix build with pre-4.6 gcc versions
fscrypt: fix up fscrypt_fname_encrypted_size() for internal use
fscrypt: define fscrypt_fname_alloc_buffer() to be for presented names
fscrypt: calculate NUL-padding length in one place only
fscrypt: move fscrypt_symlink_data to fscrypt_private.h
fscrypt: remove fscrypt_fname_usr_to_disk()
f2fs: switch to fscrypt_get_symlink()
f2fs: switch to fscrypt ->symlink() helper functions
fscrypt: new helper function - fscrypt_get_symlink()
fscrypt: new helper functions for ->symlink()
fscrypt: trim down fscrypt.h includes
fscrypt: move fscrypt_is_dot_dotdot() to fs/crypto/fname.c
fscrypt: move fscrypt_valid_enc_modes() to fscrypt_private.h
fscrypt: move fscrypt_operations declaration to fscrypt_supp.h
fscrypt: split fscrypt_dummy_context_enabled() into supp/notsupp versions
fscrypt: move fscrypt_ctx declaration to fscrypt_supp.h
fscrypt: move fscrypt_info_cachep declaration to fscrypt_private.h
fscrypt: move fscrypt_control_page() to supp/notsupp headers
fscrypt: move fscrypt_has_encryption_key() to supp/notsupp headers
f2fs: don't put dentry page in pagecache into highmem
f2fs: support inode creation time
f2fs: rebuild sit page from sit info in mem
f2fs: stop issuing discard if fs is readonly
f2fs: clean up duplicated assignment in init_discard_policy
f2fs: use GFP_F2FS_ZERO for cleanup
f2fs: allow to recover node blocks given updated checkpoint
f2fs: recover some i_inline flags
f2fs: correct removexattr behavior for null valued extended attribute
f2fs: drop page cache after fs shutdown
f2fs: stop gc/discard thread after fs shutdown
f2fs: hanlde error case in f2fs_ioc_shutdown
f2fs: split need_inplace_update
f2fs: fix to update last_disk_size correctly
f2fs: kill F2FS_INLINE_XATTR_ADDRS for cleanup
f2fs: clean up error path of fill_super
f2fs: avoid hungtask when GC encrypted block if io_bits is set
f2fs: allow quota to use reserved blocks
f2fs: fix to drop all inmem pages correctly
f2fs: speed up defragment on sparse file
f2fs: support F2FS_IOC_PRECACHE_EXTENTS
f2fs: add an ioctl to disable GC for specific file
f2fs: prevent newly created inode from being dirtied incorrectly
f2fs: support FIEMAP_FLAG_XATTR
f2fs: fix to cover f2fs_inline_data_fiemap with inode_lock
f2fs: check node page again in write end io
f2fs: fix to caclulate required free section correctly
f2fs: handle newly created page when revoking inmem pages
f2fs: add resgid and resuid to reserve root blocks
f2fs: implement cgroup writeback support
f2fs: remove unused pend_list_tag
f2fs: avoid high cpu usage in discard thread
f2fs: make local functions static
f2fs: add reserved blocks for root user
f2fs: check segment type in __f2fs_replace_block
f2fs: update inode info to inode page for new file
f2fs: show precise # of blocks that user/root can use
f2fs: clean up unneeded declaration
f2fs: continue to do direct IO if we only preallocate partial blocks
f2fs: enable quota at remount from r to w
f2fs: skip stop_checkpoint for user data writes
f2fs: fix missing error number for xattr operation
f2fs: recover directory operations by fsync
f2fs: return error during fill_super
f2fs: fix an error case of missing update inode page
f2fs: fix potential hangtask in f2fs_trace_pid
f2fs: no need return value in restore summary process
f2fs: use unlikely for release case
f2fs: don't return value in truncate_data_blocks_range
f2fs: clean up f2fs_map_blocks
f2fs: clean up hash codes
f2fs: fix error handling in fill_super
f2fs: spread f2fs_k{m,z}alloc
f2fs: inject fault to kvmalloc
f2fs: inject fault to kzalloc
f2fs: remove a redundant conditional expression
f2fs: apply write hints to select the type of segment for direct write
f2fs: switch to fscrypt_prepare_setattr()
f2fs: switch to fscrypt_prepare_lookup()
f2fs: switch to fscrypt_prepare_rename()
f2fs: switch to fscrypt_prepare_link()
f2fs: switch to fscrypt_file_open()
f2fs: remove repeated f2fs_bug_on
f2fs: remove an excess variable
f2fs: fix lock dependency in between dio_rwsem & i_mmap_sem
f2fs: remove unused parameter
f2fs: still write data if preallocate only partial blocks
f2fs: introduce sysfs readdir_ra to readahead inode block in readdir
f2fs: fix concurrent problem for updating free bitmap
f2fs: remove unneeded memory footprint accounting
f2fs: no need to read nat block if nat_block_bitmap is set
f2fs: reserve nid resource for quota sysfile
fscrypt: resolve some cherry-pick bugs
fscrypt: move to generic async completion
crypto: introduce crypto wait for async op
fscrypt: lock mutex before checking for bounce page pool
fscrypt: new helper function - fscrypt_prepare_setattr()
fscrypt: new helper function - fscrypt_prepare_lookup()
fscrypt: new helper function - fscrypt_prepare_rename()
fscrypt: new helper function - fscrypt_prepare_link()
fscrypt: new helper function - fscrypt_file_open()
fscrypt: new helper function - fscrypt_require_key()
fscrypt: remove unneeded empty fscrypt_operations structs
fscrypt: remove ->is_encrypted()
fscrypt: switch from ->is_encrypted() to IS_ENCRYPTED()
fs, fscrypt: add an S_ENCRYPTED inode flag
fscrypt: clean up include file mess
fscrypt: fix dereference of NULL user_key_payload
fscrypt: make ->dummy_context() return bool
f2fs: deny accessing encryption policy if encryption is off
f2fs: inject fault in inc_valid_node_count
f2fs: fix to clear FI_NO_PREALLOC
f2fs: expose quota information in debugfs
f2fs: separate nat entry mem alloc from nat_tree_lock
f2fs: validate before set/clear free nat bitmap
f2fs: avoid opened loop codes in __add_ino_entry
f2fs: apply write hints to select the type of segments for buffered write
f2fs: introduce scan_curseg_cache for cleanup
f2fs: optimize the way of traversing free_nid_bitmap
f2fs: keep scanning until enough free nids are acquired
f2fs: trace checkpoint reason in fsync()
f2fs: keep isize once block is reserved cross EOF
f2fs: avoid race in between GC and block exchange
f2fs: save a multiplication for last_nid calculation
f2fs: fix summary info corruption
f2fs: remove dead code in update_meta_page
f2fs: remove unneeded semicolon
f2fs: don't bother with inode->i_version
f2fs: check curseg space before foreground GC
f2fs: use rw_semaphore to protect SIT cache
f2fs: support quota sys files
f2fs: add quota_ino feature infra
f2fs: optimize __update_nat_bits
f2fs: modify for accurate fggc node io stat
Revert "f2fs: handle dirty segments inside refresh_sit_entry"
f2fs: add a function to move nid
f2fs: export SSR allocation threshold
f2fs: give correct trimmed blocks in fstrim
f2fs: support bio allocation error injection
f2fs: support get_page error injection
f2fs: add missing sysfs description
f2fs: support soft block reservation
f2fs: handle error case when adding xattr entry
f2fs: support flexible inline xattr size
f2fs: show current cp state
f2fs: add missing quota_initialize
f2fs: show # of dirty segments via sysfs
f2fs: stop all the operations by cp_error flag
f2fs: remove several redundant assignments
f2fs: avoid using timespec
f2fs: fix to correct no_fggc_candidate
Revert "f2fs: return wrong error number on f2fs_quota_write"
f2fs: remove obsolete pointer for truncate_xattr_node
f2fs: retry ENOMEM for quota_read|write
f2fs: limit # of inmemory pages
f2fs: update ctx->pos correctly when hitting hole in directory
f2fs: relocate readahead codes in readdir()
f2fs: allow readdir() to be interrupted
f2fs: trace f2fs_readdir
f2fs: trace f2fs_lookup
f2fs: skip searching non-exist range in truncate_hole
f2fs: expose some sectors to user in inline data or dentry case
f2fs: avoid stale fi->gdirty_list pointer
f2fs/crypto: drop crypto key at evict_inode only
f2fs: fix to avoid race when accessing last_disk_size
f2fs: Fix bool initialization/comparison
f2fs: give up CP_TRIMMED_FLAG if it drops discards
f2fs: trace f2fs_remove_discard
f2fs: reduce cmd_lock coverage in __issue_discard_cmd
f2fs: split discard policy
f2fs: wrap discard policy
f2fs: support issuing/waiting discard in range
f2fs: fix to flush multiple device in checkpoint
f2fs: enhance multiple device flush
f2fs: fix to show ino management cache size correctly
f2fs: drop FI_UPDATE_WRITE tag after f2fs_issue_flush
f2fs: obsolete ALLOC_NID_LIST list
f2fs: convert inline data for direct I/O & FI_NO_PREALLOC
f2fs: allow readpages with NULL file pointer
f2fs: show flush list status in sysfs
f2fs: introduce read_xattr_block
f2fs: introduce read_inline_xattr
Revert "f2fs: reuse nids more aggressively"
Revert "f2fs: node segment is prior to data segment selected victim"
f2fs: fix potential panic during fstrim
f2fs: hurry up to issue discard after io interruption
f2fs: fix to show correct discard_granularity in sysfs
f2fs: detect dirty inode in evict_inode
f2fs: clear radix tree dirty tag of pages whose dirty flag is cleared
f2fs: speed up gc_urgent mode with SSR
f2fs: better to wait for fstrim completion
f2fs: avoid race in between read xattr & write xattr
f2fs: make get_lock_data_page to handle encrypted inode
f2fs: use generic terms used for encrypted block management
f2fs: introduce f2fs_encrypted_file for clean-up
Revert "f2fs: add a new function get_ssr_cost"
f2fs: constify super_operations
f2fs: fix to wake up all sleeping flusher
f2fs: avoid race in between atomic_read & atomic_inc
f2fs: remove unneeded parameter of change_curseg
f2fs: update i_flags correctly
f2fs: don't check inode's checksum if it was dirtied or writebacked
f2fs: don't need to update inode checksum for recovery
f2fs: trigger fdatasync for non-atomic_write file
f2fs: fix to avoid race in between aio and gc
f2fs: wake up discard_thread iff there is a candidate
f2fs: return error when accessing insane flie offset
f2fs: trigger normal fsync for non-atomic_write file
f2fs: clear FI_HOT_DATA correctly
f2fs: fix out-of-order execution in f2fs_issue_flush
f2fs: issue discard commands if gc_urgent is set
f2fs: introduce discard_granularity sysfs entry
f2fs: remove unused function overprovision_sections
f2fs: check hot_data for roll-forward recovery
f2fs: add tracepoint for f2fs_gc
f2fs: retry to revoke atomic commit in -ENOMEM case
f2fs: let fill_super handle roll-forward errors
f2fs: merge equivalent flags F2FS_GET_BLOCK_[READ|DIO]
f2fs: support journalled quota
f2fs: fix potential overflow when adjusting GC cycle
f2fs: avoid unneeded sync on quota file
f2fs: introduce gc_urgent mode for background GC
f2fs: use IPU for cold files
f2fs: fix the size value in __check_sit_bitmap
f2fs: add app/fs io stat
f2fs: do not change the valid_block value if cur_valid_map was wrongly set or cleared
f2fs: update cur_valid_map_mir together with cur_valid_map
f2fs: use printk_ratelimited for f2fs_msg
f2fs: expose features to sysfs entry
f2fs: support inode checksum
f2fs: return wrong error number on f2fs_quota_write
f2fs: provide f2fs_balance_fs to __write_node_page
f2fs: introduce f2fs_statfs_project
f2fs: don't need to wait for node writes for atomic write
f2fs: avoid naming confusion of sysfs init
f2fs: support project quota
f2fs: record quota during dot{,dot} recovery
f2fs: enhance on-disk inode structure scalability
f2fs: make max inline size changeable
f2fs: add ioctl to expose current features
f2fs: make background threads of f2fs being aware of freezing
f2fs: don't give partially written atomic data from process crash
f2fs: give a try to do atomic write in -ENOMEM case
f2fs: preserve i_mode if __f2fs_set_acl() fails
f2fs: alloc new nids for xattr block in recovery
f2fs: spread struct f2fs_dentry_ptr for inline path
f2fs: remove unused input parameter
f2fs: avoid cpu lockup
f2fs: include seq_file.h for sysfs.c
f2fs: Don't clear SGID when inheriting ACLs
f2fs: remove extra inode_unlock() in error path
fscrypt: add support for AES-128-CBC
fscrypt: inline fscrypt_free_filename()
f2fs: make more close to v4.13-rc1
f2fs: support plain user/group quota
f2fs: avoid deadlock caused by lock order of page and lock_op
f2fs: use spin_{,un}lock_irq{save,restore}
f2fs: relax migratepage for atomic written page
f2fs: don't count inode block in in-memory inode.i_blocks
Revert "f2fs: fix to clean previous mount option when remount_fs"
f2fs: do not set LOST_PINO for renamed dir
f2fs: do not set LOST_PINO for newly created dir
f2fs: skip ->writepages for {mete,node}_inode during recovery
f2fs: introduce __check_sit_bitmap
f2fs: stop gc/discard thread in prior during umount
f2fs: introduce reserved_blocks in sysfs
f2fs: avoid redundant f2fs_flush after remount
f2fs: report # of free inodes more precisely
f2fs: add ioctl to do gc with target block address
f2fs: don't need to check encrypted inode for partial truncation
f2fs: measure inode.i_blocks as generic filesystem
f2fs: set CP_TRIMMED_FLAG correctly
f2fs: require key for truncate(2) of encrypted file
f2fs: move sysfs code from super.c to fs/f2fs/sysfs.c
f2fs: clean up sysfs codes
f2fs: fix wrong error number of fill_super
f2fs: fix to show injection rate in ->show_options
f2fs: Fix a return value in case of error in 'f2fs_fill_super'
f2fs: use proper variable name
f2fs: fix to avoid panic when encountering corrupt node
f2fs: don't track newly allocated nat entry in list
f2fs: add f2fs_bug_on in __remove_discard_cmd
f2fs: introduce __wait_one_discard_bio
f2fs: dax: fix races between page faults and truncating pages
f2fs: simplify the way of calulating next nat address
f2fs: sanity check size of nat and sit cache
f2fs: fix a panic caused by NULL flush_cmd_control
f2fs: remove the unnecessary cast for PTR_ERR
f2fs: remove false-positive bug_on
f2fs: Do not issue small discards in LFS mode
f2fs: don't bother checking for encryption key in ->write_iter()
f2fs: don't bother checking for encryption key in ->mmap()
f2fs: wait discard IO completion without cmd_lock held
f2fs: wake up all waiters in f2fs_submit_discard_endio
f2fs: show more info if fail to issue discard
f2fs: introduce io_list for serialize data/node IOs
f2fs: split wio_mutex
f2fs: combine huge num of discard rb tree consistence checks
f2fs: fix a bug caused by NULL extent tree
f2fs: try to freeze in gc and discard threads
f2fs: add a new function get_ssr_cost
f2fs: declare load_free_nid_bitmap static
f2fs: avoid f2fs_lock_op for IPU writes
f2fs: split bio cache
f2fs: use fio instead of multiple parameters
f2fs: remove unnecessary read cases in merged IO flow
f2fs: use f2fs_submit_page_bio for ra_meta_pages
f2fs: make sure f2fs_gc returns consistent errno
f2fs: load inode's flag from disk
f2fs: sanity check checkpoint segno and blkoff
f2fs, block_dump: give WRITE direction to submit_bio
fscrypt: correct collision claim for digested names
f2fs: switch to using fscrypt_match_name()
fscrypt: introduce helper function for filename matching
fscrypt: fix context consistency check when key(s) unavailable
fscrypt: Move key structure and constants to uapi
fscrypt: remove fscrypt_symlink_data_len()
fscrypt: remove unnecessary checks for NULL operations
fscrypt: eliminate ->prepare_context() operation
fscrypt: remove broken support for detecting keyring key revocation
fscrypt: avoid collisions when presenting long encrypted filenames
f2fs: check entire encrypted bigname when finding a dentry
f2fs: sync f2fs_lookup() with ext4_lookup()
f2fs: fix a mount fail for wrong next_scan_nid
f2fs: relocate inode_{,un}lock in F2FS_IOC_SETFLAGS
f2fs: show available_nids in f2fs/status
f2fs: flush dirty nats periodically
f2fs: introduce CP_TRIMMED_FLAG to avoid unneeded discard
f2fs: allow cpc->reason to indicate more than one reason
f2fs: release cp and dnode lock before IPU
f2fs: shrink size of struct discard_cmd
f2fs: don't hold cmd_lock during waiting discard command
f2fs: nullify fio->encrypted_page for each writes
f2fs: sanity check segment count
f2fs: introduce valid_ipu_blkaddr to clean up
f2fs: lookup extent cache first under IPU scenario
f2fs: reconstruct code to write a data page
f2fs: introduce __wait_discard_cmd
f2fs: introduce __issue_discard_cmd
f2fs: enable small discard by default
f2fs: delay awaking discard thread
f2fs: seperate read nat page from nat_tree_lock
f2fs: fix multiple f2fs_add_link() having same name for inline dentry
f2fs: skip encrypted inode in ASYNC IPU policy
f2fs: fix out-of free segments
f2fs: improve definition of statistic macros
f2fs: assign allocation hint for warm/cold data
f2fs: fix _IOW usage
f2fs: add ioctl to flush data from faster device to cold area
f2fs: introduce async IPU policy
f2fs: add undiscard blocks stat
f2fs: unlock cp_rwsem early for IPU writes
f2fs: introduce __check_rb_tree_consistence
f2fs: trace __submit_discard_cmd
f2fs: in prior to issue big discard
f2fs: clean up discard_cmd_control structure
f2fs: use rb-tree to track pending discard commands
f2fs: avoid dirty node pages in check_only recovery
f2fs: fix not to set fsync/dentry mark
f2fs: allocate hot_data for atomic writes
f2fs: give time to flush dirty pages for checkpoint
f2fs: fix fs corruption due to zero inode page
f2fs: shrink blk plug region
f2fs: extract rb-tree operation infrastructure
f2fs: avoid frequent checkpoint during f2fs_gc
f2fs: clean up some macros in terms of GET_SEGNO
f2fs: clean up get_valid_blocks with consistent parameter
f2fs: use segment number for get_valid_blocks
f2fs: guard macro variables with braces
f2fs: fix comment on f2fs_flush_merged_bios() after 86531d6b
f2fs: prevent waiter encountering incorrect discard states
f2fs: introduce f2fs_wait_discard_bios
f2fs: split discard_cmd_list
Revert "f2fs: put allocate_segment after refresh_sit_entry"
f2fs: split make_dentry_ptr() into block and inline versions
f2fs: submit bio of in-place-update pages
f2fs: remove the redundant variable definition
f2fs: avoid IO split due to mixed WB_SYNC_ALL and WB_SYNC_NONE
f2fs: write small sized IO to hot log
f2fs: use bitmap in discard_entry
f2fs: clean up destroy_discard_cmd_control
f2fs: count discard command entry
f2fs: show issued flush/discard count
f2fs: relax node version check for victim data in gc
f2fs: start SSR much eariler to avoid FG_GC
f2fs: allocate node and hot data in the beginning of partition
f2fs: fix wrong max cost initialization
f2fs: allow write page cache when writting cp
f2fs: don't reserve additional space in xattr block
f2fs: clean up xattr operation
f2fs: don't track volatile file in dirty inode list
f2fs: show the max number of volatile operations
f2fs: fix race condition in between free nid allocator/initializer
f2fs: use set_page_private marcro in f2fs_trace_pid
f2fs: fix recording invalid last_victim
f2fs: more reasonable mem_size calculating of ino_entry
f2fs: calculate the f2fs_stat_info into base_mem
f2fs: avoid stat_inc_atomic_write for non-atomic file
f2fs: sanity check of crc_offset from raw checkpoint
f2fs: cleanup the disk level filename updating
f2fs: cover update_free_nid_bitmap with nid_list_lock
f2fs: fix bad prefetchw of NULL page
f2fs: clear FI_DATA_EXIST flag in truncate_inline_inode
f2fs: move mnt_want_write_file after arguments checking
f2fs: check new size by inode_newsize_ok in f2fs_insert_range
f2fs: avoid copy date to user-space if move file range fail
f2fs: drop duplicate new_size assign in f2fs_zero_range
f2fs: adjust the way of calculating nat block
f2fs: add fault injection on f2fs_truncate
f2fs: check range before defragment
f2fs: use parameter max_items instead of PIDVEC_SIZE
f2fs: add a punch discard command function
f2fs: allocate a bio for discarding when actually issuing it
f2fs: skip writeback meta pages if cp_mutex acquire failed
f2fs: show more precise message on orphan recovery failure
f2fs: remove dead macro PGOFS_OF_NEXT_DNODE
f2fs: drop duplicate radix tree lookup of nat_entry_set
f2fs: make sure trace all f2fs_issue_flush
f2fs: don't allow volatile writes for non-regular file
f2fs: don't allow atomic writes for not regular files
f2fs: fix stale ATOMIC_WRITTEN_PAGE private pointer
f2fs: build stat_info before orphan inode recovery
f2fs: fix the fault of calculating blkstart twice
f2fs: fix the fault of checking F2FS_LINK_MAX for rename inode
f2fs: don't allow to get pino when filename is encrypted
f2fs: fix wrong error injection for evict_inode
f2fs: le32_to_cpu for ckpt->cp_pack_total_block_count
f2fs: le16_to_cpu for xattr->e_value_size
f2fs: don't need to invalidate wrong node page
f2fs: fix an error return value in truncate_partial_data_page
f2fs: combine nat_bits and free_nid_bitmap cache
f2fs: skip scanning free nid bitmap of full NAT blocks
f2fs: use __set{__clear}_bit_le
f2fs: update_free_nid_bitmap() can be static
f2fs: __update_nat_bits() can be static
f2fs: le16_to_cpu for xattr->e_value_size
f2fs: don't overwrite node block by SSR
f2fs: don't need to invalidate wrong node page
f2fs: fix an error return value in truncate_partial_data_page
fscrypt: catch up to v4.11-rc1
f2fs: avoid to flush nat journal entries
f2fs: avoid to issue redundant discard commands
f2fs: fix a plint compile warning
f2fs: add f2fs_drop_inode tracepoint
f2fs: Fix zoned block device support
f2fs: remove redundant set_page_dirty()
f2fs: fix to enlarge size of write_io_dummy mempool
f2fs: fix memory leak of write_io_dummy mempool during umount
f2fs: fix to update F2FS_{CP_}WB_DATA count correctly
f2fs: use MAX_FREE_NIDS for the free nids target
f2fs: introduce free nid bitmap
f2fs: new helper cur_cp_crc() getting crc in f2fs_checkpoint
f2fs: update the comment of default nr_pages to skipping
f2fs: drop the duplicate pval in f2fs_getxattr
f2fs: Don't update the xattr data that same as the exist
f2fs: kill __is_extent_same
f2fs: avoid bggc->fggc when enough free segments are avaliable after cp
f2fs: select target segment with closer temperature in SSR mode
f2fs: show simple call stack in fault injection message
fscrypt: catch fscrypto_get_policy in v4.10-rc6
f2fs: use __clear_bit_le
f2fs: no need lock_op in f2fs_write_inline_data
f2fs: add bitmaps for empty or full NAT blocks
f2fs: replace rw semaphore extent_tree_lock with mutex lock
f2fs: avoid m_flags overlay when allocating more data blocks
f2fs: remove unsafe bitmap checking
f2fs: init local extent_info to avoid stale stack info in tp
f2fs: remove unnecessary condition check for write_checkpoint in f2fs_gc
f2fs: do SSR for node segments more aggresively
f2fs: check discard alignment only for SEQWRITE zones
f2fs: wait for discard completion after submission
f2fs: much larger batched trim_fs job
f2fs: avoid very large discard command
f2fs: find data segments across all the types
f2fs: do SSR in higher priority
f2fs: do SSR for data when there is enough free space
f2fs: node segment is prior to data segment selected victim
f2fs: put allocate_segment after refresh_sit_entry
f2fs: add ovp valid_blocks check for bg gc victim to fg_gc
f2fs: do not wait for writeback in write_begin
f2fs: replace __get_victim by dirty_segments in FG_GC
f2fs: fix multiple f2fs_add_link() calls having same name
f2fs: show actual device info in tracepoints
f2fs: use SSR for warm node as well
f2fs: enable inline_xattr by default
f2fs: introduce noinline_xattr mount option
f2fs: avoid reading NAT page by get_node_info
f2fs: remove build_free_nids() during checkpoint
f2fs: change recovery policy of xattr node block
f2fs: super: constify fscrypt_operations structure
f2fs: show checkpoint version at mount time
f2fs: remove preflush for nobarrier case
f2fs: check last page index in cached bio to decide submission
f2fs: check io submission more precisely
f2fs: fix trim_fs assignment
Revert "f2fs: remove batched discard in f2fs_trim_fs"
f2fs: fix missing bio_alloc(1)
f2fs: call internal __write_data_page directly
f2fs: avoid out-of-order execution of atomic writes
f2fs: move write_node_page above fsync_node_pages
f2fs: move flush tracepoint
f2fs: show # of APPEND and UPDATE inodes
f2fs: fix 446 coding style warnings in f2fs.h
f2fs: fix 3 coding style errors in f2fs.h
f2fs: declare missing static function
f2fs: show the fault injection mount option
f2fs: fix null pointer dereference when issuing flush in ->fsync
f2fs: fix to avoid overflow when left shifting page offset
f2fs: enhance lookup xattr
f2fs: fix a dead loop in f2fs_fiemap()
f2fs: do not preallocate blocks which has wrong buffer
f2fs: show # of on-going flush and discard bios
f2fs: add a kernel thread to issue discard commands asynchronously
f2fs: factor out discard command info into discard_cmd_control
f2fs: remove batched discard in f2fs_trim_fs
f2fs: reorganize stat information
f2fs: clean up flush/discard command namings
f2fs: check in-memory sit version bitmap
f2fs: check in-memory nat version bitmap
f2fs: check in-memory block bitmap
f2fs: introduce FI_ATOMIC_COMMIT
f2fs: clean up with list_{first, last}_entry
f2fs: return fs_trim if there is no candidate
f2fs: avoid needless checkpoint in f2fs_trim_fs
f2fs: relax async discard commands more
f2fs: drop exist_data for inline_data when truncated to 0
f2fs: don't allow encrypted operations without keys
f2fs: show the max number of atomic operations
f2fs: get io size bit from mount option
f2fs: support IO alignment for DATA and NODE writes
f2fs: add submit_bio tracepoint
f2fs: reassign new segment for mode=lfs
f2fs: fix a missing discard prefree segments
f2fs: use rb_entry_safe
f2fs: add a case of no need to read a page in write begin
f2fs: fix a problem of using memory after free
f2fs: remove unneeded condition
f2fs: don't cache nat entry if out of memory
f2fs: remove unused values in recover_fsync_data
f2fs: support async discard based on v4.9
f2fs: resolve op and op_flags confilcts
f2fs: remove wrong backported codes
f2fs: fix a missing size change in f2fs_setattr
fs/super.c: fix race between freeze_super() and thaw_super()
scripts/tags.sh: catch 4.9-rc6
f2fs: fix to access nullified flush_cmd_control pointer
f2fs: free meta pages if sanity check for ckpt is failed
f2fs: detect wrong layout
f2fs: call sync_fs when f2fs is idle
Revert "f2fs: use percpu_counter for # of dirty pages in inode"
f2fs: return AOP_WRITEPAGE_ACTIVATE for writepage
f2fs: do not activate auto_recovery for fallocated i_size
f2fs: fix 32-bit build
f2fs: set ->owner for debugfs status file's file_operations
f2fs: fix incorrect free inode count in ->statfs
f2fs: drop duplicate header timer.h
f2fs: fix wrong AUTO_RECOVER condition
f2fs: do not recover i_size if it's valid
f2fs: fix fdatasync
f2fs: fix to account total free nid correctly
f2fs: fix an infinite loop when flush nodes in cp
f2fs: don't wait writeback for datas during checkpoint
f2fs: fix wrong written_valid_blocks counting
f2fs: avoid BG_GC in f2fs_balance_fs
f2fs: fix redundant block allocation
f2fs: use err for f2fs_preallocate_blocks
f2fs: support multiple devices
f2fs: allow dio read for LFS mode
f2fs: revert segment allocation for direct IO
f2fs: return directly if block has been removed from the victim
Revert "f2fs: do not recover from previous remained wrong dnodes"
f2fs: remove checkpoint in f2fs_freeze
f2fs: assign segments correctly for direct_io
f2fs: fix wrong i_atime recovery
f2fs: record inode updating status correctly
f2fs: Trace reset zone events
f2fs: Reset sequential zones on zoned block devices
f2fs: Cache zoned block devices zone type
f2fs: Do not allow adaptive mode for host-managed zoned block devices
f2fs: Always enable discard for zoned blocks devices
f2fs: Suppress discard warning message for zoned block devices
f2fs: Check zoned block feature for host-managed zoned block devices
f2fs: Use generic zoned block device terminology
f2fs: Add missing break in switch-case
f2fs: avoid infinite loop in the EIO case on recover_orphan_inodes
f2fs: report error of f2fs_fill_dentries
fs/crypto: catch up 4.9-rc6
f2fs: hide a maybe-uninitialized warning
f2fs: remove percpu_count due to performance regression
f2fs: make clean inodes when flushing inode page
f2fs: keep dirty inodes selectively for checkpoint
f2fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps
f2fs: use BIO_MAX_PAGES for bio allocation
f2fs: declare static function for __build_free_nids
f2fs: call f2fs_balance_fs for setattr
f2fs: count dirty inodes to flush node pages during checkpoint
f2fs: avoid casted negative value as shrink count
f2fs: don't interrupt free nids building during nid allocation
f2fs: clean up free nid list operations
f2fs: split free nid list
f2fs: clear nlink if fail to add_link
f2fs: fix sparse warnings
f2fs: fix error handling in fsync_node_pages
f2fs: fix to update largest extent under lock
f2fs: be aware of extent beyond EOF in fiemap
f2fs: don't miss any f2fs_balance_fs cases
f2fs: add missing f2fs_balance_fs in f2fs_zero_range
f2fs: give a chance to detach from dirty list
f2fs: fix to release discard entries during checkpoint
f2fs: exclude free nids building and allocation
f2fs: fix to determine start_cp_addr by sbi->cur_cp_pack
f2fs: fix overflow due to condition check order
posix_acl: Clear SGID bit when setting file permissions
f2fs: fix wrong sum_page pointer in f2fs_gc
f2fs: backport from (4c1fad64 - Merge tag 'for-f2fs-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs)
Change-Id: I6c7208efc63ce7b13f26f0ec1cd3c8aef410eff0
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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android-4.4
6944da0a68ca treewide: Use array_size in f2fs_kvzalloc()
f15443db99c3 treewide: Use array_size() in f2fs_kzalloc()
3ea03ea4bd09 treewide: Use array_size() in f2fs_kmalloc()
c41203299a52 overflow.h: Add allocation size calculation helpers
d400752f547f f2fs: fix to clear FI_VOLATILE_FILE correctly
853e7339b634 f2fs: let sync node IO interrupt async one
6a4540cf1984 f2fs: don't change wbc->sync_mode
588ecdfd7d02 f2fs: fix to update mtime correctly
1ae5aadab191 fs: f2fs: insert space around that ':' and ', '
39ee53e22320 fs: f2fs: add missing blank lines after declarations
d5b4710fcf38 fs: f2fs: changed variable type of offset "unsigned" to "loff_t"
c35da89531b3 f2fs: clean up symbol namespace
fcf37e16f3cb f2fs: make set_de_type() static
5d1633aa1071 f2fs: make __f2fs_write_data_pages() static
cc8093af7c42 f2fs: fix to avoid accessing cross the boundary
b7f559467095 f2fs: fix to let caller retry allocating block address
e48fcd857657 disable loading f2fs module on PAGE_SIZE > 4KB
02afc275a5bd f2fs: fix error path of move_data_page
0291bd36d076 f2fs: don't drop dentry pages after fs shutdown
a1259450b6db f2fs: fix to avoid race during access gc_thread pointer
d2e0f2f786a6 f2fs: clean up with clear_radix_tree_dirty_tag
c74034518fdc f2fs: fix to don't trigger writeback during recovery
e72a2cca82d8 f2fs: clear discard_wake earlier
b25a1872e9a5 f2fs: let discard thread wait a little longer if dev is busy
b125dfb20d18 f2fs: avoid stucking GC due to atomic write
405909e7f532 f2fs: introduce sbi->gc_mode to determine the policy
1f62e4702a34 f2fs: keep migration IO order in LFS mode
c4408c238722 f2fs: fix to wait page writeback during revoking atomic write
9db5be4af890 f2fs: Fix deadlock in shutdown ioctl
ed74404955cd f2fs: detect synchronous writeback more earlier
91e7d9d2ddbf mm: remove nr_pages argument from pagevec_lookup_{,range}_tag()
feb94dc82928 ceph: use pagevec_lookup_range_nr_tag()
f3aa4a25b8b0 mm: add variant of pagevec_lookup_range_tag() taking number of pages
8914877e374a mm: use pagevec_lookup_range_tag() in write_cache_pages()
26778b87a006 mm: use pagevec_lookup_range_tag() in __filemap_fdatawait_range()
94f1b99298bd nilfs2: use pagevec_lookup_range_tag()
160355d69f46 gfs2: use pagevec_lookup_range_tag()
564108e83a74 f2fs: use find_get_pages_tag() for looking up single page
6cf6fb8645ff f2fs: simplify page iteration loops
a05d8a6a2bde f2fs: use pagevec_lookup_range_tag()
18a4848ffded ext4: use pagevec_lookup_range_tag()
1c7be24f65cd ceph: use pagevec_lookup_range_tag()
e25fadabb5c7 btrfs: use pagevec_lookup_range_tag()
bf9510b162c4 mm: implement find_get_pages_range_tag()
461247b21fde f2fs: clean up with is_valid_blkaddr()
a5d0ccbc189a f2fs: fix to initialize min_mtime with ULLONG_MAX
9bb4d22cf5de f2fs: fix to let checkpoint guarantee atomic page persistence
cdcf2b3e2559 f2fs: fix to initialize i_current_depth according to inode type
331ae0c25b44 Revert "f2fs: add ovp valid_blocks check for bg gc victim to fg_gc"
2494cc7c0bcd f2fs: don't drop any page on f2fs_cp_error() case
0037c639e63d f2fs: fix spelling mistake: "extenstion" -> "extension"
2bba5b8eb867 f2fs: enhance sanity_check_raw_super() to avoid potential overflows
9bb86b63dc0f f2fs: treat volatile file's data as hot one
2cf64590361e f2fs: introduce release_discard_addr() for cleanup
03279ce90b46 f2fs: fix potential overflow
f46eddc4da48 f2fs: rename dio_rwsem to i_gc_rwsem
bb015824532c f2fs: move mnt_want_write_file after range check
8bb9a8da75d1 f2fs: fix missing clear FI_NO_PREALLOC in some error case
cb38cc4e1d02 f2fs: enforce fsync_mode=strict for renamed directory
26bf4e8a96aa f2fs: sanity check for total valid node blocks
78f8b0f46fa2 f2fs: sanity check on sit entry
ab758ada220f f2fs: avoid bug_on on corrupted inode
1a5d1966c0ca f2fs: give message and set need_fsck given broken node id
b025f6dfc018 f2fs: clean up commit_inmem_pages()
7aff5c69da4c f2fs: do not check F2FS_INLINE_DOTS in recover
23d00b02878e f2fs: remove duplicated dquot_initialize and fix error handling
937f4ef79e25 f2fs: stop issue discard if something wrong with f2fs
a6d74bb282ad f2fs: fix return value in f2fs_ioc_commit_atomic_write
258489ec5220 f2fs: allocate hot_data for atomic write more strictly
aa857e0f3b09 f2fs: check if inmem_pages list is empty correctly
9d77ded0a71d f2fs: fix race in between GC and atomic open
0d17eb90b56a f2fs: change le32 to le16 of f2fs_inode->i_extra_size
ea2813111f1f f2fs: check cur_valid_map_mir & raw_sit block count when flush sit entries
9190cadf38db f2fs: correct return value of f2fs_trim_fs
17f85d070886 f2fs: fix to show missing bits in FS_IOC_GETFLAGS
3e90db63fcfc f2fs: remove unneeded F2FS_PROJINHERIT_FL
298032d4d4a6 f2fs: don't use GFP_ZERO for page caches
fdf61219dc25 f2fs: issue all big range discards in umount process
cd79eb2b5e45 f2fs: remove redundant block plug
ec034d0f14ca f2fs: remove unmatched zero_user_segment when convert inline dentry
71aaced0e1ee f2fs: introduce private inode status mapping
e7724207f71e fscrypt: log the crypto algorithm implementations
4cbda579cd3d crypto: api - Add crypto_type_has_alg helper
b24dcaae8753 crypto: skcipher - Add low-level skcipher interface
a9146e423547 crypto: skcipher - Add helper to retrieve driver name
a0ca4bdf4744 crypto: skcipher - Add default key size helper
eb13e0b69296 fscrypt: add Speck128/256 support
27a0e77380a3 fscrypt: only derive the needed portion of the key
f68a71fa8f77 fscrypt: separate key lookup from key derivation
52359cf4fd6d fscrypt: use a common logging function
ff8e7c745e2b fscrypt: remove internal key size constants
7149dd4d39b5 fscrypt: remove unnecessary check for non-logon key type
56446c91422e fscrypt: make fscrypt_operations.max_namelen an integer
f572a22ef9a5 fscrypt: drop empty name check from fname_decrypt()
0077eff1d2e3 fscrypt: drop max_namelen check from fname_decrypt()
3f7af9d27fd6 fscrypt: don't special-case EOPNOTSUPP from fscrypt_get_encryption_info()
52c51f7b7bde fscrypt: don't clear flags on crypto transform
89b7fb82982f fscrypt: remove stale comment from fscrypt_d_revalidate()
d56de4e926ad fscrypt: remove error messages for skcipher_request_alloc() failure
f68d3b84aef1 fscrypt: remove unnecessary NULL check when allocating skcipher
fb10231825e9 fscrypt: clean up after fscrypt_prepare_lookup() conversions
39b144490606 fscrypt: use unbound workqueue for decryption
Change-Id: Ied79ecd97385c05ef26e6b7b24d250eee9ec4e47
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
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All users of pagevec_lookup() and pagevec_lookup_range() now pass
PAGEVEC_SIZE as a desired number of pages. Just drop the argument.
Link: http://lkml.kernel.org/r/20171009151359.31984-15-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Use pagevec_lookup_range_tag() in __filemap_fdatawait_range() as it is
interested only in pages from given range. Remove unnecessary code
resulting from this.
Link: http://lkml.kernel.org/r/20171009151359.31984-11-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Patch series "Ranged pagevec tagged lookup", v3.
In this series I provide a ranged variant of pagevec_lookup_tag() and
use it in places where it makes sense. This series removes some common
code and it also has a potential for speeding up some operations
similarly as for pagevec_lookup_range() (but for now I can think of only
artificial cases where this happens).
This patch (of 16):
Implement a variant of find_get_pages_tag() that stops iterating at
given index. Lots of users of this function (through pagevec_lookup())
actually want a range lookup and all of them are currently open-coding
this.
Also create corresponding pagevec_lookup_range_tag() function.
Link: http://lkml.kernel.org/r/20171009151359.31984-2-jack@suse.cz
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Bob Peterson <rpeterso@redhat.com>
Cc: Chao Yu <yuchao0@huawei.com>
Cc: David Howells <dhowells@redhat.com>
Cc: David Sterba <dsterba@suse.com>
Cc: Ilya Dryomov <idryomov@gmail.com>
Cc: Jaegeuk Kim <jaegeuk@kernel.org>
Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Steve French <sfrench@samba.org>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* refs/heads/tmp-3f51ea2
Linux 4.4.133
x86/kexec: Avoid double free_page() upon do_kexec_load() failure
hfsplus: stop workqueue when fill_super() failed
cfg80211: limit wiphy names to 128 bytes
gpio: rcar: Add Runtime PM handling for interrupts
time: Fix CLOCK_MONOTONIC_RAW sub-nanosecond accounting
dmaengine: ensure dmaengine helpers check valid callback
scsi: zfcp: fix infinite iteration on ERP ready list
scsi: sg: allocate with __GFP_ZERO in sg_build_indirect()
scsi: libsas: defer ata device eh commands to libata
s390: use expoline thunks in the BPF JIT
s390: extend expoline to BC instructions
s390: move spectre sysfs attribute code
s390/kernel: use expoline for indirect branches
s390/lib: use expoline for indirect branches
s390: move expoline assembler macros to a header
s390: add assembler macros for CPU alternatives
ext2: fix a block leak
tcp: purge write queue in tcp_connect_init()
sock_diag: fix use-after-free read in __sk_free
packet: in packet_snd start writing at link layer allocation
net: test tailroom before appending to linear skb
btrfs: fix reading stale metadata blocks after degraded raid1 mounts
btrfs: fix crash when trying to resume balance without the resume flag
Btrfs: fix xattr loss after power failure
ARM: 8772/1: kprobes: Prohibit kprobes on get_user functions
ARM: 8770/1: kprobes: Prohibit probing on optimized_callback
ARM: 8769/1: kprobes: Fix to use get_kprobe_ctlblk after irq-disabed
tick/broadcast: Use for_each_cpu() specially on UP kernels
ARM: 8771/1: kprobes: Prohibit kprobes on do_undefinstr
efi: Avoid potential crashes, fix the 'struct efi_pci_io_protocol_32' definition for mixed mode
s390: remove indirect branch from do_softirq_own_stack
s390/qdio: don't release memory in qdio_setup_irq()
s390/cpum_sf: ensure sample frequency of perf event attributes is non-zero
s390/qdio: fix access to uninitialized qdio_q fields
mm: don't allow deferred pages with NEED_PER_CPU_KM
powerpc/powernv: Fix NVRAM sleep in invalid context when crashing
procfs: fix pthread cross-thread naming if !PR_DUMPABLE
proc read mm's {arg,env}_{start,end} with mmap semaphore taken.
tracing/x86/xen: Remove zero data size trace events trace_xen_mmu_flush_tlb{_all}
cpufreq: intel_pstate: Enable HWP by default
signals: avoid unnecessary taking of sighand->siglock
mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read
mm: filemap: remove redundant code in do_read_cache_page
proc: meminfo: estimate available memory more conservatively
vmscan: do not force-scan file lru if its absolute size is small
powerpc: Don't preempt_disable() in show_cpuinfo()
cpuidle: coupled: remove unused define cpuidle_coupled_lock
powerpc/powernv: remove FW_FEATURE_OPALv3 and just use FW_FEATURE_OPAL
powerpc/powernv: Remove OPALv2 firmware define and references
powerpc/powernv: panic() on OPAL < V3
spi: pxa2xx: Allow 64-bit DMA
ALSA: control: fix a redundant-copy issue
ALSA: hda: Add Lenovo C50 All in one to the power_save blacklist
ALSA: usb: mixer: volume quirk for CM102-A+/102S+
usbip: usbip_host: fix bad unlock balance during stub_probe()
usbip: usbip_host: fix NULL-ptr deref and use-after-free errors
usbip: usbip_host: run rebind from exit when module is removed
usbip: usbip_host: delete device from busid_table after rebind
usbip: usbip_host: refine probe and disconnect debug msgs to be useful
kernel/exit.c: avoid undefined behaviour when calling wait4()
futex: futex_wake_op, fix sign_extend32 sign bits
pipe: cap initial pipe capacity according to pipe-max-size limit
l2tp: revert "l2tp: fix missing print session offset info"
Revert "ARM: dts: imx6qdl-wandboard: Fix audio channel swap"
lockd: lost rollback of set_grace_period() in lockd_down_net()
xfrm: fix xfrm_do_migrate() with AEAD e.g(AES-GCM)
futex: Remove duplicated code and fix undefined behaviour
futex: Remove unnecessary warning from get_futex_key
arm64: Add work around for Arm Cortex-A55 Erratum 1024718
arm64: introduce mov_q macro to move a constant into a 64-bit register
audit: move calcs after alloc and check when logging set loginuid
ALSA: timer: Call notifier in the same spinlock
sctp: delay the authentication for the duplicated cookie-echo chunk
sctp: fix the issue that the cookie-ack with auth can't get processed
tcp: ignore Fast Open on repair mode
bonding: do not allow rlb updates to invalid mac
tg3: Fix vunmap() BUG_ON() triggered from tg3_free_consistent().
sctp: use the old asoc when making the cookie-ack chunk in dupcook_d
sctp: handle two v4 addrs comparison in sctp_inet6_cmp_addr
r8169: fix powering up RTL8168h
qmi_wwan: do not steal interfaces from class drivers
openvswitch: Don't swap table in nlattr_set() after OVS_ATTR_NESTED is found
net: support compat 64-bit time in {s,g}etsockopt
net_sched: fq: take care of throttled flows before reuse
net/mlx4_en: Verify coalescing parameters are in range
net: ethernet: sun: niu set correct packet size in skb
llc: better deal with too small mtu
ipv4: fix memory leaks in udp_sendmsg, ping_v4_sendmsg
dccp: fix tasklet usage
bridge: check iface upper dev when setting master via ioctl
8139too: Use disable_irq_nosync() in rtl8139_poll_controller()
BACKPORT, FROMLIST: fscrypt: add Speck128/256 support
cgroup: Disable IRQs while holding css_set_lock
Revert "cgroup: Disable IRQs while holding css_set_lock"
cgroup: Disable IRQs while holding css_set_lock
ANDROID: proc: fix undefined behavior in proc_uid_base_readdir
x86: vdso: Fix leaky vdso linker with CC=clang.
ANDROID: build: cuttlefish: Upgrade clang to newer version.
ANDROID: build: cuttlefish: Upgrade clang to newer version.
ANDROID: build: cuttlefish: Fix path to clang.
UPSTREAM: dm bufio: avoid sleeping while holding the dm_bufio lock
ANDROID: sdcardfs: Don't d_drop in d_revalidate
Conflicts:
arch/arm64/include/asm/cputype.h
fs/ext4/crypto.c
fs/ext4/ext4.h
kernel/cgroup.c
mm/vmscan.c
Change-Id: Ic10c5722b6439af1cf423fd949c493f786764d7e
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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complete during a read
commit ebded02788b5d7c7600f8cff26ae07896d568649 upstream.
In the generic read paths the kernel looks up a page in the page cache
and if it's up to date, it is used. If not, the page lock is acquired
to wait for IO to complete and then check the page. If multiple
processes are waiting on IO, they all serialise against the lock and
duplicate the checks. This is unnecessary.
The page lock in itself does not give any guarantees to the callers
about the page state as it can be immediately truncated or reclaimed
after the page is unlocked. It's sufficient to wait_on_page_locked and
then continue if the page is up to date on wakeup.
It is possible that a truncated but up-to-date page is returned but the
reference taken during read prevents it disappearing underneath the
caller and the data is still valid if PageUptodate.
The overall impact is small as even if processes serialise on the lock,
the lock section is tiny once the IO is complete. Profiles indicated
that unlock_page and friends are generally a tiny portion of a
read-intensive workload. An artificial test was created that had
instances of dd access a cache-cold file on an ext4 filesystem and
measure how long the read took.
paralleldd
4.4.0 4.4.0
vanilla avoidlock
Amean Elapsd-1 5.28 ( 0.00%) 5.15 ( 2.50%)
Amean Elapsd-4 5.29 ( 0.00%) 5.17 ( 2.12%)
Amean Elapsd-7 5.28 ( 0.00%) 5.18 ( 1.78%)
Amean Elapsd-12 5.20 ( 0.00%) 5.33 ( -2.50%)
Amean Elapsd-21 5.14 ( 0.00%) 5.21 ( -1.41%)
Amean Elapsd-30 5.30 ( 0.00%) 5.12 ( 3.38%)
Amean Elapsd-48 5.78 ( 0.00%) 5.42 ( 6.21%)
Amean Elapsd-79 6.78 ( 0.00%) 6.62 ( 2.46%)
Amean Elapsd-110 9.09 ( 0.00%) 8.99 ( 1.15%)
Amean Elapsd-128 10.60 ( 0.00%) 10.43 ( 1.66%)
The impact is small but intuitively, it makes sense to avoid unnecessary
calls to lock_page.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 32b635298ff4e991d8d8f64dc23782b02eec29c3 upstream.
do_read_cache_page and __read_cache_page duplicate page filler code when
filling the page for the first time. This patch simply removes the
duplicate logic.
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-b1c4836
Linux 4.4.129
writeback: safer lock nesting
fanotify: fix logic of events on child
ext4: bugfix for mmaped pages in mpage_release_unused_pages()
mm/filemap.c: fix NULL pointer in page_cache_tree_insert()
mm: allow GFP_{FS,IO} for page_cache_read page cache allocation
autofs: mount point create should honour passed in mode
Don't leak MNT_INTERNAL away from internal mounts
rpc_pipefs: fix double-dput()
hypfs_kill_super(): deal with failed allocations
jffs2_kill_sb(): deal with failed allocations
powerpc/lib: Fix off-by-one in alternate feature patching
powerpc/eeh: Fix enabling bridge MMIO windows
MIPS: memset.S: Fix clobber of v1 in last_fixup
MIPS: memset.S: Fix return of __clear_user from Lpartial_fixup
MIPS: memset.S: EVA & fault support for small_memset
MIPS: uaccess: Add micromips clobbers to bzero invocation
HID: hidraw: Fix crash on HIDIOCGFEATURE with a destroyed device
ALSA: hda - New VIA controller suppor no-snoop path
ALSA: rawmidi: Fix missing input substream checks in compat ioctls
ALSA: line6: Use correct endpoint type for midi output
ext4: fix deadlock between inline_data and ext4_expand_extra_isize_ea()
ext4: fix crashes in dioread_nolock mode
drm/radeon: Fix PCIe lane width calculation
ext4: don't allow r/w mounts if metadata blocks overlap the superblock
vfio/pci: Virtualize Maximum Read Request Size
vfio/pci: Virtualize Maximum Payload Size
vfio-pci: Virtualize PCIe & AF FLR
ALSA: pcm: Fix endless loop for XRUN recovery in OSS emulation
ALSA: pcm: Fix mutex unbalance in OSS emulation ioctls
ALSA: pcm: Return -EBUSY for OSS ioctls changing busy streams
ALSA: pcm: Avoid potential races between OSS ioctls and read/write
ALSA: pcm: Use ERESTARTSYS instead of EINTR in OSS emulation
ALSA: oss: consolidate kmalloc/memset 0 call to kzalloc
watchdog: f71808e_wdt: Fix WD_EN register read
thermal: imx: Fix race condition in imx_thermal_probe()
clk: bcm2835: De-assert/assert PLL reset signal when appropriate
clk: mvebu: armada-38x: add support for missing clocks
clk: mvebu: armada-38x: add support for 1866MHz variants
mmc: jz4740: Fix race condition in IRQ mask update
iommu/vt-d: Fix a potential memory leak
um: Use POSIX ucontext_t instead of struct ucontext
dmaengine: at_xdmac: fix rare residue corruption
IB/srp: Fix completion vector assignment algorithm
IB/srp: Fix srp_abort()
ALSA: pcm: Fix UAF at PCM release via PCM timer access
RDMA/ucma: Don't allow setting RDMA_OPTION_IB_PATH without an RDMA device
ext4: fail ext4_iget for root directory if unallocated
ext4: don't update checksum of new initialized bitmaps
jbd2: if the journal is aborted then don't allow update of the log tail
random: use a tighter cap in credit_entropy_bits_safe()
thunderbolt: Resume control channel after hibernation image is created
ASoC: ssm2602: Replace reg_default_raw with reg_default
HID: core: Fix size as type u32
HID: Fix hid_report_len usage
powerpc/powernv: Fix OPAL NVRAM driver OPAL_BUSY loops
powerpc/powernv: define a standard delay for OPAL_BUSY type retry loops
powerpc/64: Fix smp_wmb barrier definition use use lwsync consistently
powerpc/powernv: Handle unknown OPAL errors in opal_nvram_write()
HID: i2c-hid: fix size check and type usage
usb: dwc3: pci: Properly cleanup resource
USB:fix USB3 devices behind USB3 hubs not resuming at hibernate thaw
ACPI / hotplug / PCI: Check presence of slot itself in get_slot_status()
ACPI / video: Add quirk to force acpi-video backlight on Samsung 670Z5E
regmap: Fix reversed bounds check in regmap_raw_write()
xen-netfront: Fix hang on device removal
ARM: dts: at91: sama5d4: fix pinctrl compatible string
ARM: dts: at91: at91sam9g25: fix mux-mask pinctrl property
usb: musb: gadget: misplaced out of bounds check
mm, slab: reschedule cache_reap() on the same CPU
ipc/shm: fix use-after-free of shm file via remap_file_pages()
resource: fix integer overflow at reallocation
fs/reiserfs/journal.c: add missing resierfs_warning() arg
ubi: Reject MLC NAND
ubi: Fix error for write access
ubi: fastmap: Don't flush fastmap work on detach
ubifs: Check ubifs_wbuf_sync() return code
tty: make n_tty_read() always abort if hangup is in progress
x86/hweight: Don't clobber %rdi
x86/hweight: Get rid of the special calling convention
lan78xx: Correctly indicate invalid OTP
slip: Check if rstate is initialized before uncompressing
cdc_ether: flag the Cinterion AHS8 modem by gemalto as WWAN
hwmon: (ina2xx) Fix access to uninitialized mutex
rtl8187: Fix NULL pointer dereference in priv->conf_mutex
getname_kernel() needs to make sure that ->name != ->iname in long case
s390/ipl: ensure loadparm valid flag is set
s390/qdio: don't merge ERROR output buffers
s390/qdio: don't retry EQBS after CCQ 96
block/loop: fix deadlock after loop_set_status
Revert "perf tests: Decompress kernel module before objdump"
radeon: hide pointless #warning when compile testing
perf intel-pt: Fix timestamp following overflow
perf intel-pt: Fix error recovery from missing TIP packet
perf intel-pt: Fix sync_switch
perf intel-pt: Fix overlap detection to identify consecutive buffers correctly
parisc: Fix out of array access in match_pci_device()
media: v4l2-compat-ioctl32: don't oops on overlay
f2fs: check cap_resource only for data blocks
Revert "f2fs: introduce f2fs_set_page_dirty_nobuffer"
f2fs: clear PageError on writepage
UPSTREAM: timer: Export destroy_hrtimer_on_stack()
BACKPORT: dm verity: add 'check_at_most_once' option to only validate hashes once
f2fs: call unlock_new_inode() before d_instantiate()
f2fs: refactor read path to allow multiple postprocessing steps
fscrypt: allow synchronous bio decryption
Change-Id: I45f4ac10734d92023b53118d83dcd6c83974a283
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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commit abc1be13fd113ddef5e2d807a466286b864caed3 upstream.
f2fs specifies the __GFP_ZERO flag for allocating some of its pages.
Unfortunately, the page cache also uses the mapping's GFP flags for
allocating radix tree nodes. It always masked off the __GFP_HIGHMEM
flag, and masks off __GFP_ZERO in some paths, but not all. That causes
radix tree nodes to be allocated with a NULL list_head, which causes
backtraces like:
__list_del_entry+0x30/0xd0
list_lru_del+0xac/0x1ac
page_cache_tree_insert+0xd8/0x110
The __GFP_DMA and __GFP_DMA32 flags would also be able to sneak through
if they are ever used. Fix them all by using GFP_RECLAIM_MASK at the
innermost location, and remove it from earlier in the callchain.
Link: http://lkml.kernel.org/r/20180411060320.14458-2-willy@infradead.org
Fixes: 449dd6984d0e ("mm: keep page cache radix tree nodes in check")
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reported-by: Chris Fries <cfries@google.com>
Debugged-by: Minchan Kim <minchan@kernel.org>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit c20cd45eb01748f0fba77a504f956b000df4ea73 upstream.
page_cache_read has been historically using page_cache_alloc_cold to
allocate a new page. This means that mapping_gfp_mask is used as the
base for the gfp_mask. Many filesystems are setting this mask to
GFP_NOFS to prevent from fs recursion issues. page_cache_read is called
from the vm_operations_struct::fault() context during the page fault.
This context doesn't need the reclaim protection normally.
ceph and ocfs2 which call filemap_fault from their fault handlers seem
to be OK because they are not taking any fs lock before invoking generic
implementation. xfs which takes XFS_MMAPLOCK_SHARED is safe from the
reclaim recursion POV because this lock serializes truncate and punch
hole with the page faults and it doesn't get involved in the reclaim.
There is simply no reason to deliberately use a weaker allocation
context when a __GFP_FS | __GFP_IO can be used. The GFP_NOFS protection
might be even harmful. There is a push to fail GFP_NOFS allocations
rather than loop within allocator indefinitely with a very limited
reclaim ability. Once we start failing those requests the OOM killer
might be triggered prematurely because the page cache allocation failure
is propagated up the page fault path and end up in
pagefault_out_of_memory.
We cannot play with mapping_gfp_mask directly because that would be racy
wrt. parallel page faults and it might interfere with other users who
really rely on NOFS semantic from the stored gfp_mask. The mask is also
inode proper so it would even be a layering violation. What we can do
instead is to push the gfp_mask into struct vm_fault and allow fs layer
to overwrite it should the callback need to be called with a different
allocation context.
Initialize the default to (mapping_gfp_mask | __GFP_FS | __GFP_IO)
because this should be safe from the page fault path normally. Why do
we care about mapping_gfp_mask at all then? Because this doesn't hold
only reclaim protection flags but it also might contain zone and
movability restrictions (GFP_DMA32, __GFP_MOVABLE and others) so we have
to respect those.
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Acked-by: Jan Kara <jack@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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refs/heads/tmp-28ec98b:
Linux 4.4.55
ext4: don't BUG when truncating encrypted inodes on the orphan list
dm: flush queued bios when process blocks to avoid deadlock
nfit, libnvdimm: fix interleave set cookie calculation
s390/kdump: Use "LINUX" ELF note name instead of "CORE"
KVM: s390: Fix guest migration for huge guests resulting in panic
mvsas: fix misleading indentation
serial: samsung: Continue to work if DMA request fails
USB: serial: io_ti: fix information leak in completion handler
USB: serial: io_ti: fix NULL-deref in interrupt callback
USB: iowarrior: fix NULL-deref in write
USB: iowarrior: fix NULL-deref at probe
USB: serial: omninet: fix reference leaks at open
USB: serial: safe_serial: fix information leak in completion handler
usb: host: xhci-plat: Fix timeout on removal of hot pluggable xhci controllers
usb: host: xhci-dbg: HCIVERSION should be a binary number
usb: gadget: function: f_fs: pass companion descriptor along
usb: dwc3: gadget: make Set Endpoint Configuration macros safe
usb: gadget: dummy_hcd: clear usb_gadget region before registration
powerpc: Emulation support for load/store instructions on LE
tracing: Add #undef to fix compile error
MIPS: Netlogic: Fix CP0_EBASE redefinition warnings
MIPS: DEC: Avoid la pseudo-instruction in delay slots
mm: memcontrol: avoid unused function warning
cpmac: remove hopeless #warning
MIPS: ralink: Remove unused rt*_wdt_reset functions
MIPS: ralink: Cosmetic change to prom_init().
mtd: pmcmsp: use kstrndup instead of kmalloc+strncpy
MIPS: Update lemote2f_defconfig for CPU_FREQ_STAT change
MIPS: ip22: Fix ip28 build for modern gcc
MIPS: Update ip27_defconfig for SCSI_DH change
MIPS: ip27: Disable qlge driver in defconfig
MIPS: Update defconfigs for NF_CT_PROTO_DCCP/UDPLITE change
crypto: improve gcc optimization flags for serpent and wp512
USB: serial: digi_acceleport: fix OOB-event processing
USB: serial: digi_acceleport: fix OOB data sanity check
Linux 4.4.54
drivers: hv: Turn off write permission on the hypercall page
fat: fix using uninitialized fields of fat_inode/fsinfo_inode
libceph: use BUG() instead of BUG_ON(1)
drm/i915/dsi: Do not clear DPOUNIT_CLOCK_GATE_DISABLE from vlv_init_display_clock_gating
fakelb: fix schedule while atomic
drm/atomic: fix an error code in mode_fixup()
drm/ttm: Make sure BOs being swapped out are cacheable
drm/edid: Add EDID_QUIRK_FORCE_8BPC quirk for Rotel RSX-1058
drm/ast: Fix AST2400 POST failure without BMC FW or VBIOS
drm/ast: Call open_key before enable_mmio in POST code
drm/ast: Fix test for VGA enabled
drm/amdgpu: add more cases to DCE11 possible crtc mask setup
mac80211: flush delayed work when entering suspend
xtensa: move parse_tag_fdt out of #ifdef CONFIG_BLK_DEV_INITRD
pwm: pca9685: Fix period change with same duty cycle
nlm: Ensure callback code also checks that the files match
target: Fix NULL dereference during LUN lookup + active I/O shutdown
ceph: remove req from unsafe list when unregistering it
ktest: Fix child exit code processing
IB/srp: Fix race conditions related to task management
IB/srp: Avoid that duplicate responses trigger a kernel bug
IB/IPoIB: Add destination address when re-queue packet
IB/ipoib: Fix deadlock between rmmod and set_mode
mnt: Tuck mounts under others instead of creating shadow/side mounts.
net: mvpp2: fix DMA address calculation in mvpp2_txq_inc_put()
s390: use correct input data address for setup_randomness
s390: make setup_randomness work
s390: TASK_SIZE for kernel threads
s390/dcssblk: fix device size calculation in dcssblk_direct_access()
s390/qdio: clear DSCI prior to scanning multiple input queues
Bluetooth: Add another AR3012 04ca:3018 device
KVM: VMX: use correct vmcs_read/write for guest segment selector/base
KVM: s390: Disable dirty log retrieval for UCONTROL guests
serial: 8250_pci: Add MKS Tenta SCOM-0800 and SCOM-0801 cards
tty: n_hdlc: get rid of racy n_hdlc.tbuf
TTY: n_hdlc, fix lockdep false positive
Linux 4.4.53
scsi: lpfc: Correct WQ creation for pagesize
MIPS: IP22: Fix build error due to binutils 2.25 uselessnes.
MIPS: IP22: Reformat inline assembler code to modern standards.
powerpc/xmon: Fix data-breakpoint
dmaengine: ipu: Make sure the interrupt routine checks all interrupts.
bcma: use (get|put)_device when probing/removing device driver
md linear: fix a race between linear_add() and linear_congested()
rtc: sun6i: Switch to the external oscillator
rtc: sun6i: Add some locking
NFSv4: fix getacl ERANGE for some ACL buffer sizes
NFSv4: fix getacl head length estimation
NFSv4: Fix memory and state leak in _nfs4_open_and_get_state
nfsd: special case truncates some more
nfsd: minor nfsd_setattr cleanup
rtlwifi: rtl8192c-common: Fix "BUG: KASAN:
rtlwifi: Fix alignment issues
gfs2: Add missing rcu locking for glock lookup
rdma_cm: fail iwarp accepts w/o connection params
RDMA/core: Fix incorrect structure packing for booleans
Drivers: hv: util: Backup: Fix a rescind processing issue
Drivers: hv: util: Fcopy: Fix a rescind processing issue
Drivers: hv: util: kvp: Fix a rescind processing issue
hv: init percpu_list in hv_synic_alloc()
hv: allocate synic pages for all present CPUs
usb: gadget: udc: fsl: Add missing complete function.
usb: host: xhci: plat: check hcc_params after add hcd
usb: musb: da8xx: Remove CPPI 3.0 quirk and methods
w1: ds2490: USB transfer buffers need to be DMAable
w1: don't leak refcount on slave attach failure in w1_attach_slave_device()
can: usb_8dev: Fix memory leak of priv->cmd_msg_buffer
iio: pressure: mpl3115: do not rely on structure field ordering
iio: pressure: mpl115: do not rely on structure field ordering
arm/arm64: KVM: Enforce unconditional flush to PoC when mapping to stage-2
fuse: add missing FR_FORCE
crypto: testmgr - Pad aes_ccm_enc_tv_template vector
ath9k: use correct OTP register offsets for the AR9340 and AR9550
ath9k: fix race condition in enabling/disabling IRQs
ath5k: drop bogus warning on drv_set_key with unsupported cipher
target: Fix multi-session dynamic se_node_acl double free OOPs
target: Obtain se_node_acl->acl_kref during get_initiator_node_acl
samples/seccomp: fix 64-bit comparison macros
ext4: return EROFS if device is r/o and journal replay is needed
ext4: preserve the needs_recovery flag when the journal is aborted
ext4: fix inline data error paths
ext4: fix data corruption in data=journal mode
ext4: trim allocation requests to group size
ext4: do not polute the extents cache while shifting extents
ext4: Include forgotten start block on fallocate insert range
loop: fix LO_FLAGS_PARTSCAN hang
block/loop: fix race between I/O and set_status
jbd2: don't leak modified metadata buffers on an aborted journal
Fix: Disable sys_membarrier when nohz_full is enabled
sd: get disk reference in sd_check_events()
scsi: use 'scsi_device_from_queue()' for scsi_dh
scsi: aacraid: Reorder Adapter status check
scsi: storvsc: properly set residual data length on errors
scsi: storvsc: properly handle SRB_ERROR when sense message is present
scsi: storvsc: use tagged SRB requests if supported by the device
dm stats: fix a leaked s->histogram_boundaries array
dm cache: fix corruption seen when using cache > 2TB
ipc/shm: Fix shmat mmap nil-page protection
mm: do not access page->mapping directly on page_endio
mm: vmpressure: fix sending wrong events on underflow
mm/page_alloc: fix nodes for reclaim in fast path
iommu/vt-d: Tylersburg isoch identity map check is done too late.
iommu/vt-d: Fix some macros that are incorrectly specified in intel-iommu
regulator: Fix regulator_summary for deviceless consumers
staging: rtl: fix possible NULL pointer dereference
ALSA: hda - Fix micmute hotkey problem for a lenovo AIO machine
ALSA: hda - Add subwoofer support for Dell Inspiron 17 7000 Gaming
ALSA: seq: Fix link corruption by event error handling
ALSA: ctxfi: Fallback DMA mask to 32bit
ALSA: timer: Reject user params with too small ticks
ALSA: hda - fix Lewisburg audio issue
ALSA: hda/realtek - Cannot adjust speaker's volume on a Dell AIO
ARM: dts: at91: Enable DMA on sama5d2_xplained console
ARM: dts: at91: Enable DMA on sama5d4_xplained console
ARM: at91: define LPDDR types
media: fix dm1105.c build error
uvcvideo: Fix a wrong macro
am437x-vpfe: always assign bpp variable
MIPS: Handle microMIPS jumps in the same way as MIPS32/MIPS64 jumps
MIPS: Calculate microMIPS ra properly when unwinding the stack
MIPS: Fix is_jump_ins() handling of 16b microMIPS instructions
MIPS: Fix get_frame_info() handling of microMIPS function size
MIPS: Prevent unaligned accesses during stack unwinding
MIPS: Clear ISA bit correctly in get_frame_info()
MIPS: Lantiq: Keep ethernet enabled during boot
MIPS: OCTEON: Fix copy_from_user fault handling for large buffers
MIPS: BCM47XX: Fix button inversion for Asus WL-500W
MIPS: Fix special case in 64 bit IP checksumming.
samples: move mic/mpssd example code from Documentation
Linux 4.4.52
kvm: vmx: ensure VMCS is current while enabling PML
Revert "usb: chipidea: imx: enable CI_HDRC_SET_NON_ZERO_TTHA"
rtlwifi: rtl_usb: Fix for URB leaking when doing ifconfig up/down
block: fix double-free in the failure path of cgwb_bdi_init()
goldfish: Sanitize the broken interrupt handler
x86/platform/goldfish: Prevent unconditional loading
USB: serial: ark3116: fix register-accessor error handling
USB: serial: opticon: fix CTS retrieval at open
USB: serial: spcp8x5: fix modem-status handling
USB: serial: ftdi_sio: fix line-status over-reporting
USB: serial: ftdi_sio: fix extreme low-latency setting
USB: serial: ftdi_sio: fix modem-status error handling
USB: serial: cp210x: add new IDs for GE Bx50v3 boards
USB: serial: mos7840: fix another NULL-deref at open
tty: serial: msm: Fix module autoload
net: socket: fix recvmmsg not returning error from sock_error
ip: fix IP_CHECKSUM handling
irda: Fix lockdep annotations in hashbin_delete().
dccp: fix freeing skb too early for IPV6_RECVPKTINFO
packet: Do not call fanout_release from atomic contexts
packet: fix races in fanout_add()
net/llc: avoid BUG_ON() in skb_orphan()
blk-mq: really fix plug list flushing for nomerge queues
rtc: interface: ignore expired timers when enqueuing new timers
rtlwifi: rtl_usb: Fix missing entry in USB driver's private data
Linux 4.4.51
mmc: core: fix multi-bit bus width without high-speed mode
bcache: Make gc wakeup sane, remove set_task_state()
ntb_transport: Pick an unused queue
NTB: ntb_transport: fix debugfs_remove_recursive
printk: use rcuidle console tracepoint
ARM: 8658/1: uaccess: fix zeroing of 64-bit get_user()
futex: Move futex_init() to core_initcall
drm/dp/mst: fix kernel oops when turning off secondary monitor
drm/radeon: Use mode h/vdisplay fields to hide out of bounds HW cursor
Input: elan_i2c - add ELAN0605 to the ACPI table
Fix missing sanity check in /dev/sg
scsi: don't BUG_ON() empty DMA transfers
fuse: fix use after free issue in fuse_dev_do_read()
siano: make it work again with CONFIG_VMAP_STACK
vfs: fix uninitialized flags in splice_to_pipe()
Linux 4.4.50
l2tp: do not use udp_ioctl()
ping: fix a null pointer dereference
packet: round up linear to header len
net: introduce device min_header_len
sit: fix a double free on error path
sctp: avoid BUG_ON on sctp_wait_for_sndbuf
mlx4: Invoke softirqs after napi_reschedule
macvtap: read vnet_hdr_size once
tun: read vnet_hdr_sz once
tcp: avoid infinite loop in tcp_splice_read()
ipv6: tcp: add a missing tcp_v6_restore_cb()
ip6_gre: fix ip6gre_err() invalid reads
netlabel: out of bound access in cipso_v4_validate()
ipv4: keep skb->dst around in presence of IP options
net: use a work queue to defer net_disable_timestamp() work
tcp: fix 0 divide in __tcp_select_window()
ipv6: pointer math error in ip6_tnl_parse_tlv_enc_lim()
ipv6: fix ip6_tnl_parse_tlv_enc_lim()
can: Fix kernel panic at security_sock_rcv_skb
Conflicts:
drivers/scsi/sd.c
drivers/usb/gadget/function/f_fs.c
drivers/usb/host/xhci-plat.c
CRs-Fixed: 2023471
Change-Id: I396051a8de30271af77b3890d4b19787faa1c31e
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
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commit dd8416c47715cf324c9a16f13273f9fda87acfed upstream.
With rw_page, page_endio is used for completing IO on a page and it
propagates write error to the address space if the IO fails. The
problem is it accesses page->mapping directly which might be okay for
file-backed pages but it shouldn't for anonymous page. Otherwise, it
can corrupt one of field from anon_vma under us and system goes panic
randomly.
swap_writepage
bdev_writepage
ops->rw_page
I encountered the BUG during developing new zram feature and it was
really hard to figure it out because it made random crash, somtime
mmap_sem lockdep, sometime other places where places never related to
zram/zsmalloc, and not reproducible with some configuration.
When I consider how that bug is subtle and people do fast-swap test with
brd, it's worth to add stable mark, I think.
Fixes: dd6bd0d9c7db ("swap: use bdev_read_page() / bdev_write_page()")
Signed-off-by: Minchan Kim <minchan@kernel.org>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Matthew Wilcox <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-26c8156:
Linux 4.4.49
drm/i915: fix use-after-free in page_flip_completed()
ALSA: seq: Don't handle loop timeout at snd_seq_pool_done()
ALSA: seq: Fix race at creating a queue
xen-netfront: Delete rx_refill_timer in xennet_disconnect_backend()
scsi: mpt3sas: disable ASPM for MPI2 controllers
scsi: aacraid: Fix INTx/MSI-x issue with older controllers
scsi: zfcp: fix use-after-free by not tracing WKA port open/close on failed send
netvsc: Set maximum GSO size in the right place
mac80211: Fix adding of mesh vendor IEs
ARM: 8642/1: LPAE: catch pending imprecise abort on unmask
target: Fix COMPARE_AND_WRITE ref leak for non GOOD status
target: Fix early transport_generic_handle_tmr abort scenario
target: Use correct SCSI status during EXTENDED_COPY exception
target: Don't BUG_ON during NodeACL dynamic -> explicit conversion
ARM: 8643/3: arm/ptrace: Preserve previous registers for short regset write
hns: avoid stack overflow with CONFIG_KASAN
cpumask: use nr_cpumask_bits for parsing functions
Revert "x86/ioapic: Restore IO-APIC irq_chip retrigger callback"
selinux: fix off-by-one in setprocattr
ARC: [arcompact] brown paper bag bug in unaligned access delay slot fixup
Linux 4.4.48
base/memory, hotplug: fix a kernel oops in show_valid_zones()
x86/irq: Make irq activate operations symmetric
USB: serial: option: add device ID for HP lt2523 (Novatel E371)
usb: gadget: f_fs: Assorted buffer overflow checks.
USB: Add quirk for WORLDE easykey.25 MIDI keyboard
USB: serial: pl2303: add ATEN device ID
USB: serial: qcserial: add Dell DW5570 QDL
KVM: x86: do not save guest-unsupported XSAVE state
HID: wacom: Fix poor prox handling in 'wacom_pl_irq'
percpu-refcount: fix reference leak during percpu-atomic transition
mmc: sdhci: Ignore unexpected CARD_INT interrupts
can: bcm: fix hrtimer/tasklet termination in bcm op removal
mm, fs: check for fatal signals in do_generic_file_read()
mm/memory_hotplug.c: check start_pfn in test_pages_in_a_zone()
cifs: initialize file_info_lock
zswap: disable changing params if init fails
svcrpc: fix oops in absence of krb5 module
NFSD: Fix a null reference case in find_or_create_lock_stateid()
powerpc: Add missing error check to prom_find_boot_cpu()
powerpc/eeh: Fix wrong flag passed to eeh_unfreeze_pe()
libata: apply MAX_SEC_1024 to all CX1-JB*-HP devices
ata: sata_mv:- Handle return value of devm_ioremap.
perf/core: Fix PERF_RECORD_MMAP2 prot/flags for anonymous memory
crypto: arm64/aes-blk - honour iv_out requirement in CBC and CTR modes
crypto: api - Clear CRYPTO_ALG_DEAD bit before registering an alg
drm/nouveau/nv1a,nv1f/disp: fix memory clock rate retrieval
drm/nouveau/disp/gt215: Fix HDA ELD handling (thus, HDMI audio) on gt215
ext4: validate s_first_meta_bg at mount time
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
ANDROID: security: export security_path_chown()
Linux 4.4.47
net: dsa: Bring back device detaching in dsa_slave_suspend()
qmi_wwan/cdc_ether: add device ID for HP lt2523 (Novatel E371) WWAN card
af_unix: move unix_mknod() out of bindlock
r8152: don't execute runtime suspend if the tx is not empty
bridge: netlink: call br_changelink() during br_dev_newlink()
tcp: initialize max window for a new fastopen socket
ipv6: addrconf: Avoid addrconf_disable_change() using RCU read-side lock
net: phy: bcm63xx: Utilize correct config_intr function
net: fix harmonize_features() vs NETIF_F_HIGHDMA
ax25: Fix segfault after sock connection timeout
ravb: do not use zero-length alignment DMA descriptor
openvswitch: maintain correct checksum state in conntrack actions
tcp: fix tcp_fastopen unaligned access complaints on sparc
net: systemport: Decouple flow control from __bcm_sysport_tx_reclaim
net: ipv4: fix table id in getroute response
net: lwtunnel: Handle lwtunnel_fill_encap failure
mlxsw: pci: Fix EQE structure definition
mlxsw: switchx2: Fix memory leak at skb reallocation
mlxsw: spectrum: Fix memory leak at skb reallocation
r8152: fix the sw rx checksum is unavailable
ANDROID: sdcardfs: Switch strcasecmp for internal call
ANDROID: sdcardfs: switch to full_name_hash and qstr
ANDROID: sdcardfs: Add GID Derivation to sdcardfs
ANDROID: sdcardfs: Remove redundant operation
ANDROID: sdcardfs: add support for user permission isolation
ANDROID: sdcardfs: Refactor configfs interface
ANDROID: sdcardfs: Allow non-owners to touch
ANDROID: binder: fix format specifier for type binder_size_t
ANDROID: fs: Export vfs_rmdir2
ANDROID: fs: Export free_fs_struct and set_fs_pwd
ANDROID: mnt: remount should propagate to slaves of slaves
ANDROID: sdcardfs: Switch ->d_inode to d_inode()
ANDROID: sdcardfs: Fix locking issue with permision fix up
ANDROID: sdcardfs: Change magic value
ANDROID: sdcardfs: Use per mount permissions
ANDROID: sdcardfs: Add gid and mask to private mount data
ANDROID: sdcardfs: User new permission2 functions
ANDROID: vfs: Add setattr2 for filesystems with per mount permissions
ANDROID: vfs: Add permission2 for filesystems with per mount permissions
ANDROID: vfs: Allow filesystems to access their private mount data
ANDROID: mnt: Add filesystem private data to mount points
ANDROID: sdcardfs: Move directory unlock before touch
ANDROID: sdcardfs: fix external storage exporting incorrect uid
ANDROID: sdcardfs: Added top to sdcardfs_inode_info
ANDROID: sdcardfs: Switch package list to RCU
ANDROID: sdcardfs: Fix locking for permission fix up
ANDROID: sdcardfs: Check for other cases on path lookup
ANDROID: sdcardfs: override umask on mkdir and create
Linux 4.4.46
mm, memcg: do not retry precharge charges
platform/x86: intel_mid_powerbtn: Set IRQ_ONESHOT
pinctrl: broxton: Use correct PADCFGLOCK offset
s5k4ecgx: select CRC32 helper
IB/umem: Release pid in error and ODP flow
IB/ipoib: move back IB LL address into the hard header
drm/i915: Don't leak edid in intel_crt_detect_ddc()
SUNRPC: cleanup ida information when removing sunrpc module
NFSv4.0: always send mode in SETATTR after EXCLUSIVE4
nfs: Don't increment lock sequence ID after NFS4ERR_MOVED
parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
ARC: [arcompact] handle unaligned access delay slot corner case
ARC: udelay: fix inline assembler by adding LP_COUNT to clobber list
can: ti_hecc: add missing prepare and unprepare of the clock
can: c_can_pci: fix null-pointer-deref in c_can_start() - set device pointer
s390/ptrace: Preserve previous registers for short regset write
RDMA/cma: Fix unknown symbol when CONFIG_IPV6 is not enabled
ISDN: eicon: silence misleading array-bounds warning
sysctl: fix proc_doulongvec_ms_jiffies_minmax()
mm/mempolicy.c: do not put mempolicy before using its nodemask
drm: Fix broken VT switch with video=1366x768 option
tile/ptrace: Preserve previous registers for short regset write
fbdev: color map copying bounds checking
Linux 4.4.45
arm64: avoid returning from bad_mode
selftest/powerpc: Wrong PMC initialized in pmc56_overflow test
dmaengine: pl330: Fix runtime PM support for terminated transfers
ite-cir: initialize use_demodulator before using it
blackfin: check devm_pinctrl_get() for errors
ARM: 8613/1: Fix the uaccess crash on PB11MPCore
ARM: ux500: fix prcmu_is_cpu_in_wfi() calculation
ARM: dts: imx6qdl-nitrogen6_max: fix sgtl5000 pinctrl init
arm64/ptrace: Reject attempts to set incomplete hardware breakpoint fields
arm64/ptrace: Avoid uninitialised struct padding in fpr_set()
arm64/ptrace: Preserve previous registers for short regset write - 3
arm64/ptrace: Preserve previous registers for short regset write - 2
arm64/ptrace: Preserve previous registers for short regset write
ARM: dts: da850-evm: fix read access to SPI flash
ceph: fix bad endianness handling in parse_reply_info_extra
ARM: 8634/1: hw_breakpoint: blacklist Scorpion CPUs
svcrdma: avoid duplicate dma unmapping during error recovery
clocksource/exynos_mct: Clear interrupt when cpu is shut down
ubifs: Fix journal replay wrt. xattr nodes
qla2xxx: Fix crash due to null pointer access
x86/ioapic: Restore IO-APIC irq_chip retrigger callback
mtd: nand: xway: disable module support
ieee802154: atusb: do not use the stack for buffers to make them DMA able
mmc: mxs-mmc: Fix additional cycles after transmission stop
HID: corsair: fix control-transfer error handling
HID: corsair: fix DMA buffers on stack
PCI: Enumerate switches below PCI-to-PCIe bridges
fuse: clear FR_PENDING flag when moving requests out of pending queue
svcrpc: don't leak contexts on PROC_DESTROY
x86/PCI: Ignore _CRS on Supermicro X8DTH-i/6/iF/6F
tmpfs: clear S_ISGID when setting posix ACLs
ARM: dts: imx31: fix AVIC base address
ARM: dts: imx31: move CCM device node to AIPS2 bus devices
ARM: dts: imx31: fix clock control module interrupts description
perf scripting: Avoid leaking the scripting_context variable
IB/IPoIB: Remove can't use GFP_NOIO warning
IB/mlx4: When no DMFS for IPoIB, don't allow NET_IF QPs
IB/mlx4: Fix port query for 56Gb Ethernet links
IB/mlx4: Fix out-of-range array index in destroy qp flow
IB/mlx4: Set traffic class in AH
IB/mlx5: Wait for all async command completions to complete
ftrace/x86: Set ftrace_stub to weak to prevent gcc from using short jumps to it
Linux 4.4.44
pinctrl: sh-pfc: Do not unconditionally support PIN_CONFIG_BIAS_DISABLE
powerpc/ibmebus: Fix device reference leaks in sysfs interface
powerpc/ibmebus: Fix further device reference leaks
bus: vexpress-config: fix device reference leak
blk-mq: Always schedule hctx->next_cpu
ACPI / APEI: Fix NMI notification handling
block: cfq_cpd_alloc() should use @gfp
cpufreq: powernv: Disable preemption while checking CPU throttling state
NFSv4.1: nfs4_fl_prepare_ds must be careful about reporting success.
NFS: Fix a performance regression in readdir
pNFS: Fix race in pnfs_wait_on_layoutreturn
pinctrl: meson: fix gpio request disabling other modes
btrfs: fix error handling when run_delayed_extent_op fails
btrfs: fix locking when we put back a delayed ref that's too new
x86/cpu: Fix bootup crashes by sanitizing the argument of the 'clearcpuid=' command-line option
USB: serial: ch341: fix modem-control and B0 handling
USB: serial: ch341: fix resume after reset
drm/radeon: drop verde dpm quirks
sysctl: Drop reference added by grab_header in proc_sys_readdir
sysrq: attach sysrq handler correctly for 32-bit kernel
tty/serial: atmel_serial: BUG: stop DMA from transmitting in stop_tx
mnt: Protect the mountpoint hashtable with mount_lock
vme: Fix wrong pointer utilization in ca91cx42_slave_get
xhci: fix deadlock at host remove by running watchdog correctly
i2c: fix kernel memory disclosure in dev interface
i2c: print correct device invalid address
Input: elants_i2c - avoid divide by 0 errors on bad touchscreen data
USB: serial: ch341: fix open and resume after B0
USB: serial: ch341: fix control-message error handling
USB: serial: ch341: fix open error handling
USB: serial: ch341: fix initial modem-control state
USB: serial: kl5kusb105: fix line-state error handling
nl80211: fix sched scan netlink socket owner destruction
KVM: x86: Introduce segmented_write_std
KVM: x86: emulate FXSAVE and FXRSTOR
KVM: x86: add asm_safe wrapper
KVM: x86: add Align16 instruction flag
KVM: x86: flush pending lapic jump label updates on module unload
jump_labels: API for flushing deferred jump label updates
KVM: eventfd: fix NULL deref irqbypass consumer
KVM: x86: fix emulation of "MOV SS, null selector"
mm/hugetlb.c: fix reservation race when freeing surplus pages
ocfs2: fix crash caused by stale lvb with fsdlm plugin
mm: fix devm_memremap_pages crash, use mem_hotplug_{begin, done}
selftests: do not require bash for the generated test
selftests: do not require bash to run netsocktests testcase
Input: i8042 - add Pegatron touchpad to noloop table
Input: xpad - use correct product id for x360w controllers
DEBUG: sched/fair: Fix sched_load_avg_cpu events for task_groups
DEBUG: sched/fair: Fix missing sched_load_avg_cpu events
net: socket: don't set sk_uid to garbage value in ->setattr()
ANDROID: configs: CONFIG_ARM64_SW_TTBR0_PAN=y
UPSTREAM: arm64: Disable PAN on uaccess_enable()
UPSTREAM: arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN
UPSTREAM: arm64: xen: Enable user access before a privcmd hvc call
UPSTREAM: arm64: Handle faults caused by inadvertent user access with PAN enabled
BACKPORT: arm64: Disable TTBR0_EL1 during normal kernel execution
BACKPORT: arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1
BACKPORT: arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro
BACKPORT: arm64: Factor out PAN enabling/disabling into separate uaccess_* macros
UPSTREAM: arm64: alternative: add auto-nop infrastructure
UPSTREAM: arm64: barriers: introduce nops and __nops macros for NOP sequences
Revert "FROMLIST: arm64: Factor out PAN enabling/disabling into separate uaccess_* macros"
Revert "FROMLIST: arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro"
Revert "FROMLIST: arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1"
Revert "FROMLIST: arm64: Disable TTBR0_EL1 during normal kernel execution"
Revert "FROMLIST: arm64: Handle faults caused by inadvertent user access with PAN enabled"
Revert "FROMLIST: arm64: xen: Enable user access before a privcmd hvc call"
Revert "FROMLIST: arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN"
ANDROID: sched/walt: fix build failure if FAIR_GROUP_SCHED=n
Linux 4.4.43
mm/init: fix zone boundary creation
ALSA: usb-audio: Add a quirk for Plantronics BT600
spi: mvebu: fix baudrate calculation for armada variant
ARM: OMAP4+: Fix bad fallthrough for cpuidle
ARM: zynq: Reserve correct amount of non-DMA RAM
powerpc: Fix build warning on 32-bit PPC
ALSA: firewire-tascam: Fix to handle error from initialization of stream data
HID: hid-cypress: validate length of report
net: vrf: do not allow table id 0
net: ipv4: Fix multipath selection with vrf
gro: Disable frag0 optimization on IPv6 ext headers
gro: use min_t() in skb_gro_reset_offset()
gro: Enter slow-path if there is no tailroom
r8152: fix rx issue for runtime suspend
r8152: split rtl8152_suspend function
ipv4: Do not allow MAIN to be alias for new LOCAL w/ custom rules
igmp: Make igmp group member RFC 3376 compliant
drop_monitor: consider inserted data in genlmsg_end
drop_monitor: add missing call to genlmsg_end
net/mlx5: Avoid shadowing numa_node
net/mlx5: Check FW limitations on log_max_qp before setting it
net: stmmac: Fix race between stmmac_drv_probe and stmmac_open
net, sched: fix soft lockup in tc_classify
ipv6: handle -EFAULT from skb_copy_bits
net: vrf: Drop conntrack data after pass through VRF device on Tx
ser_gigaset: return -ENOMEM on error instead of success
netvsc: reduce maximum GSO size
Linux 4.4.42
usb: gadget: composite: always set ep->mult to a sensible value
Revert "usb: gadget: composite: always set ep->mult to a sensible value"
tick/broadcast: Prevent NULL pointer dereference
drm/radeon: Always store CRTC relative radeon_crtc->cursor_x/y values
cx23885-dvb: move initialization of a8293_pdata
net: vxge: avoid unused function warnings
net: ti: cpmac: Fix compiler warning due to type confusion
cred/userns: define current_user_ns() as a function
staging: comedi: dt282x: tidy up register bit defines
powerpc/pci/rpadlpar: Fix device reference leaks
md: MD_RECOVERY_NEEDED is set for mddev->recovery
crypto: arm64/aes-ce - fix for big endian
crypto: arm64/aes-xts-ce: fix for big endian
crypto: arm64/sha1-ce - fix for big endian
crypto: arm64/aes-neon - fix for big endian
crypto: arm64/aes-ccm-ce: fix for big endian
crypto: arm/aes-ce - fix for big endian
crypto: arm64/ghash-ce - fix for big endian
crypto: arm64/sha2-ce - fix for big endian
s390/crypto: unlock on error in prng_tdes_read()
mmc: mmc_test: Uninitialized return value
PM / wakeirq: Fix dedicated wakeirq for drivers not using autosuspend
irqchip/bcm7038-l1: Implement irq_cpu_offline() callback
target/iscsi: Fix double free in lio_target_tiqn_addtpg()
scsi: mvsas: fix command_active typo
ASoC: samsung: i2s: Fixup last IRQ unsafe spin lock call
iommu/vt-d: Flush old iommu caches for kdump when the device gets context mapped
iommu/vt-d: Fix pasid table size encoding
iommu/amd: Fix the left value check of cmd buffer
iommu/amd: Missing error code in amd_iommu_init_device()
clk: imx31: fix rewritten input argument of mx31_clocks_init()
clk: clk-wm831x: fix a logic error
hwmon: (g762) Fix overflows and crash seen when writing limit attributes
hwmon: (nct7802) Fix overflows seen when writing into limit attributes
hwmon: (ds620) Fix overflows seen when writing temperature limits
hwmon: (amc6821) sign extension temperature
hwmon: (scpi) Fix module autoload
cris: Only build flash rescue image if CONFIG_ETRAX_AXISFLASHMAP is selected
ath10k: use the right length of "background"
stable-fixup: hotplug: fix unused function warning
usb: dwc3: ep0: explicitly call dwc3_ep0_prepare_one_trb()
usb: dwc3: ep0: add dwc3_ep0_prepare_one_trb()
usb: dwc3: gadget: always unmap EP0 requests
staging: iio: ad7606: fix improper setting of oversampling pins
mei: bus: fix mei_cldev_enable KDoc
USB: serial: io_ti: bind to interface after fw download
USB: phy: am335x-control: fix device and of_node leaks
ARM: dts: r8a7794: Correct hsusb parent clock
USB: serial: kl5kusb105: abort on open exception path
ALSA: usb-audio: Fix bogus error return in snd_usb_create_stream()
usb: musb: blackfin: add bfin_fifo_offset in bfin_ops
usb: hub: Move hub_port_disable() to fix warning if PM is disabled
usb: musb: Fix trying to free already-free IRQ 4
usb: dwc3: pci: add Intel Gemini Lake PCI ID
xhci: Fix race related to abort operation
xhci: Use delayed_work instead of timer for command timeout
usb: xhci-mem: use passed in GFP flags instead of GFP_KERNEL
USB: serial: mos7720: fix parallel probe
USB: serial: mos7720: fix parport use-after-free on probe errors
USB: serial: mos7720: fix use-after-free on probe errors
USB: serial: mos7720: fix NULL-deref at open
USB: serial: mos7840: fix NULL-deref at open
USB: serial: kobil_sct: fix NULL-deref in write
USB: serial: cyberjack: fix NULL-deref at open
USB: serial: oti6858: fix NULL-deref at open
USB: serial: io_edgeport: fix NULL-deref at open
USB: serial: ti_usb_3410_5052: fix NULL-deref at open
USB: serial: garmin_gps: fix memory leak on failed URB submit
USB: serial: iuu_phoenix: fix NULL-deref at open
USB: serial: io_ti: fix I/O after disconnect
USB: serial: io_ti: fix another NULL-deref at open
USB: serial: io_ti: fix NULL-deref at open
USB: serial: spcp8x5: fix NULL-deref at open
USB: serial: keyspan_pda: verify endpoints at probe
USB: serial: pl2303: fix NULL-deref at open
USB: serial: quatech2: fix sleep-while-atomic in close
USB: serial: omninet: fix NULL-derefs at open and disconnect
usb: xhci: hold lock over xhci_abort_cmd_ring()
xhci: Handle command completion and timeout race
usb: host: xhci: Fix possible wild pointer when handling abort command
usb: xhci: fix return value of xhci_setup_device()
xhci: free xhci virtual devices with leaf nodes first
usb: xhci: apply XHCI_PME_STUCK_QUIRK to Intel Apollo Lake
xhci: workaround for hosts missing CAS bit
usb: xhci: fix possible wild pointer
usb: dwc3: core: avoid Overflow events
usb: gadget: composite: Test get_alt() presence instead of set_alt()
USB: dummy-hcd: fix bug in stop_activity (handle ep0)
USB: fix problems with duplicate endpoint addresses
USB: gadgetfs: fix checks of wTotalLength in config descriptors
USB: gadgetfs: fix use-after-free bug
USB: gadgetfs: fix unbounded memory allocation bug
usb: gadgetfs: restrict upper bound on device configuration size
usb: storage: unusual_uas: Add JMicron JMS56x to unusual device
usb: musb: dsps: implement clear_ep_rxintr() callback
usb: musb: core: add clear_ep_rxintr() to musb_platform_ops
KVM: MIPS: Flush KVM entry code from icache globally
KVM: x86: reset MMU on KVM_SET_VCPU_EVENTS
mac80211: initialize fast-xmit 'info' later
ARM: davinci: da850: don't add emac clock to lookup table twice
ALSA: usb-audio: Fix irq/process data synchronization
ALSA: hda - Apply asus-mode8 fixup to ASUS X71SL
ALSA: hda - Fix up GPIO for ASUS ROG Ranger
Linux 4.4.41
net: mvpp2: fix dma unmapping of TX buffers for fragments
sg_write()/bsg_write() is not fit to be called under KERNEL_DS
kconfig/nconf: Fix hang when editing symbol with a long prompt
target/user: Fix use-after-free of tcmu_cmds if they are expired
powerpc: Convert cmp to cmpd in idle enter sequence
powerpc/ps3: Fix system hang with GCC 5 builds
nfs_write_end(): fix handling of short copies
libceph: verify authorize reply on connect
PCI: Check for PME in targeted sleep state
Input: drv260x - fix input device's parent assignment
media: solo6x10: fix lockup by avoiding delayed register write
IB/cma: Fix a race condition in iboe_addr_get_sgid()
IB/multicast: Check ib_find_pkey() return value
IPoIB: Avoid reading an uninitialized member variable
IB/mad: Fix an array index check
fgraph: Handle a case where a tracer ignores set_graph_notrace
platform/x86: asus-nb-wmi.c: Add X45U quirk
ftrace/x86_32: Set ftrace_stub to weak to prevent gcc from using short jumps to it
kvm: nVMX: Allow L1 to intercept software exceptions (#BP and #OF)
KVM: PPC: Book3S HV: Don't lose hardware R/C bit updates in H_PROTECT
KVM: PPC: Book3S HV: Save/restore XER in checkpointed register state
md/raid5: limit request size according to implementation limits
sc16is7xx: Drop bogus use of IRQF_ONESHOT
s390/vmlogrdr: fix IUCV buffer allocation
firmware: fix usermode helper fallback loading
ARC: mm: arc700: Don't assume 2 colours for aliasing VIPT dcache
scsi: avoid a permanent stop of the scsi device's request queue
scsi: zfcp: fix rport unblock race with LUN recovery
scsi: zfcp: do not trace pure benign residual HBA responses at default level
scsi: zfcp: fix use-after-"free" in FC ingress path after TMF
scsi: megaraid_sas: Do not set MPI2_TYPE_CUDA for JBOD FP path for FW which does not support JBOD sequence map
scsi: megaraid_sas: For SRIOV enabled firmware, ensure VF driver waits for 30secs before reset
vt: fix Scroll Lock LED trigger name
block: protect iterate_bdevs() against concurrent close
mei: request async autosuspend at the end of enumeration
drivers/gpu/drm/ast: Fix infinite loop if read fails
drm/gma500: Add compat ioctl
drm/radeon: add additional pci revision to dpm workaround
drm/radeon: Hide the HW cursor while it's out of bounds
drm/radeon: Also call cursor_move_locked when the cursor size changes
drm/nouveau/i2c/gk110b,gm10x: use the correct implementation
drm/nouveau/fifo/gf100-: protect channel preempt with subdev mutex
drm/nouveau/ltc: protect clearing of comptags with mutex
drm/nouveau/bios: require checksum to match for fast acpi shadow method
drm/nouveau/kms: lvds panel strap moved again on maxwell
ACPI / video: Add force_native quirk for HP Pavilion dv6
ACPI / video: Add force_native quirk for Dell XPS 17 L702X
staging: comedi: ni_mio_common: fix E series ni_ai_insn_read() data
staging: comedi: ni_mio_common: fix M Series ni_ai_insn_read() data mask
thermal: hwmon: Properly report critical temperature in sysfs
clk: bcm2835: Avoid overwriting the div info when disabling a pll_div clk
timekeeping_Force_unsigned_clocksource_to_nanoseconds_conversion
regulator: stw481x-vmmc: fix ages old enable error
mmc: sdhci: Fix recovery from tuning timeout
ath9k: Really fix LED polarity for some Mini PCI AR9220 MB92 cards.
cfg80211/mac80211: fix BSS leaks when abandoning assoc attempts
rtlwifi: Fix enter/exit power_save
ssb: Fix error routine when fallback SPROM fails
Linux 4.4.40
ppp: defer netns reference release for ppp channel
driver core: fix race between creating/querying glue dir and its cleanup
xfs: set AGI buffer type in xlog_recover_clear_agi_bucket
arm/xen: Use alloc_percpu rather than __alloc_percpu
xen/gntdev: Use VM_MIXEDMAP instead of VM_IO to avoid NUMA balancing
tpm xen: Remove bogus tpm_chip_unregister
kernel/debug/debug_core.c: more properly delay for secondary CPUs
kernel/watchdog: use nmi registers snapshot in hardlockup handler
CIFS: Fix a possible memory corruption in push locks
CIFS: Fix missing nls unload in smb2_reconnect()
CIFS: Fix a possible memory corruption during reconnect
ASoC: intel: Fix crash at suspend/resume without card registration
dm space map metadata: fix 'struct sm_metadata' leak on failed create
dm crypt: mark key as invalid until properly loaded
dm flakey: return -EINVAL on interval bounds error in flakey_ctr()
blk-mq: Do not invoke .queue_rq() for a stopped queue
usb: gadget: composite: always set ep->mult to a sensible value
exec: Ensure mm->user_ns contains the execed files
fs: exec: apply CLOEXEC before changing dumpable task flags
mm/vmscan.c: set correct defer count for shrinker
loop: return proper error from loop_queue_rq()
f2fs: set ->owner for debugfs status file's file_operations
ext4: do not perform data journaling when data is encrypted
ext4: return -ENOMEM instead of success
ext4: reject inodes with negative size
ext4: add sanity checking to count_overhead()
ext4: fix in-superblock mount options processing
ext4: use more strict checks for inodes_per_block on mount
ext4: fix stack memory corruption with 64k block size
ext4: fix mballoc breakage with 64k block size
crypto: caam - fix AEAD givenc descriptors
ptrace: Capture the ptracer's creds not PT_PTRACE_CAP
mm: Add a user_ns owner to mm_struct and fix ptrace permission checks
block_dev: don't test bdev->bd_contains when it is not stable
btrfs: make file clone aware of fatal signals
Btrfs: don't BUG() during drop snapshot
Btrfs: fix memory leak in do_walk_down
Btrfs: don't leak reloc root nodes on error
Btrfs: return gracefully from balance if fs tree is corrupted
Btrfs: bail out if block group has different mixed flag
Btrfs: fix memory leak in reading btree blocks
clk: ti: omap36xx: Work around sprz319 advisory 2.1
ALSA: hda: when comparing pin configurations, ignore assoc in addition to seq
ALSA: hda - Gate the mic jack on HP Z1 Gen3 AiO
ALSA: hda - fix headset-mic problem on a Dell laptop
ALSA: hda - ignore the assoc and seq when comparing pin configurations
ALSA: hda/ca0132 - Add quirk for Alienware 15 R2 2016
ALSA: hiface: Fix M2Tech hiFace driver sampling rate change
ALSA: usb-audio: Add QuickCam Communicate Deluxe/S7500 to volume_control_quirks
USB: UHCI: report non-PME wakeup signalling for Intel hardware
usb: gadget: composite: correctly initialize ep->maxpacket
usb: gadget: f_uac2: fix error handling at afunc_bind
usb: hub: Fix auto-remount of safely removed or ejected USB-3 devices
USB: cdc-acm: add device id for GW Instek AFG-125
USB: serial: kl5kusb105: fix open error path
USB: serial: option: add dlink dwm-158
USB: serial: option: add support for Telit LE922A PIDs 0x1040, 0x1041
Btrfs: fix qgroup rescan worker initialization
btrfs: store and load values of stripes_min/stripes_max in balance status item
Btrfs: fix tree search logic when replaying directory entry deletes
btrfs: limit async_work allocation and worker func duration
ANDROID: trace: net: use %pK for kernel pointers
ANDROID: android-base: Enable QUOTA related configs
net: ipv4: Don't crash if passing a null sk to ip_rt_update_pmtu.
net: inet: Support UID-based routing in IP protocols.
Revert "net: ipv6: fix virtual tunneling build"
net: core: add UID to flows, rules, and routes
net: core: Add a UID field to struct sock.
Revert "net: core: Support UID-based routing."
Revert "net: core: Handle 'sk' being NULL in UID-based routing"
Revert "ANDROID: net: fix 'const' warnings"
Revert "ANDROID: net: fib: remove duplicate assignment"
Revert "ANDROID: net: core: fix UID-based routing"
UPSTREAM: efi/arm64: Don't apply MEMBLOCK_NOMAP to UEFI memory map mapping
UPSTREAM: arm64: enable CONFIG_DEBUG_RODATA by default
goldfish: enable CONFIG_INET_DIAG_DESTROY
sched/walt: kill {min,max}_capacity
sched: fix wrong truncation of walt_avg
ANDROID: dm verity: add minimum prefetch size
Linux 4.4.39
crypto: rsa - Add Makefile dependencies to fix parallel builds
hotplug: Make register and unregister notifier API symmetric
batman-adv: Check for alloc errors when preparing TT local data
m68k: Fix ndelay() macro
arm64: futex.h: Add missing PAN toggling
can: peak: fix bad memory access and free sequence
can: raw: raw_setsockopt: limit number of can_filter that can be set
crypto: mcryptd - Check mcryptd algorithm compatibility
perf/x86: Fix full width counter, counter overflow
locking/rtmutex: Use READ_ONCE() in rt_mutex_owner()
locking/rtmutex: Prevent dequeue vs. unlock race
zram: restrict add/remove attributes to root only
parisc: Fix TLB related boot crash on SMP machines
parisc: Remove unnecessary TLB purges from flush_dcache_page_asm and flush_icache_page_asm
parisc: Purge TLB before setting PTE
powerpc/eeh: Fix deadlock when PE frozen state can't be cleared
Conflicts:
arch/arm64/kernel/traps.c
drivers/usb/dwc3/core.h
drivers/usb/dwc3/ep0.c
drivers/usb/gadget/function/f_fs.c
drivers/usb/host/xhci-mem.c
drivers/usb/host/xhci-ring.c
drivers/usb/host/xhci.c
drivers/video/fbdev/core/fbcmap.c
include/trace/events/sched.h
mm/vmscan.c
Change-Id: I3faa0010ecb98972cd8e6470377a493b56d95f89
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
Signed-off-by: Runmin Wang <runminw@codeaurora.org>
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commit 5abf186a30a89d5b9c18a6bf93a2c192c9fd52f6 upstream.
do_generic_file_read() can be told to perform a large request from
userspace. If the system is under OOM and the reading task is the OOM
victim then it has an access to memory reserves and finishing the full
request can lead to the full memory depletion which is dangerous. Make
sure we rather go with a short read and allow the killed task to
terminate.
Link: http://lkml.kernel.org/r/20170201092706.9966-3-mhocko@kernel.org
Signed-off-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* remotes/origin/tmp-2f0de51:
Linux 4.4.38
esp6: Fix integrity verification when ESN are used
esp4: Fix integrity verification when ESN are used
ipv4: Set skb->protocol properly for local output
ipv6: Set skb->protocol properly for local output
Don't feed anything but regular iovec's to blk_rq_map_user_iov
constify iov_iter_count() and iter_is_iovec()
sparc64: fix compile warning section mismatch in find_node()
sparc64: Fix find_node warning if numa node cannot be found
sparc32: Fix inverted invalid_frame_pointer checks on sigreturns
net: ping: check minimum size on ICMP header length
net: avoid signed overflows for SO_{SND|RCV}BUFFORCE
geneve: avoid use-after-free of skb->data
sh_eth: remove unchecked interrupts for RZ/A1
net: bcmgenet: Utilize correct struct device for all DMA operations
packet: fix race condition in packet_set_ring
net/dccp: fix use-after-free in dccp_invalid_packet
netlink: Do not schedule work from sk_destruct
netlink: Call cb->done from a worker thread
net/sched: pedit: make sure that offset is valid
net, sched: respect rcu grace period on cls destruction
net: dsa: bcm_sf2: Ensure we re-negotiate EEE during after link change
l2tp: fix racy SOCK_ZAPPED flag check in l2tp_ip{,6}_bind()
rtnetlink: fix FDB size computation
af_unix: conditionally use freezable blocking calls in read
net: sky2: Fix shutdown crash
ip6_tunnel: disable caching when the traffic class is inherited
net: check dead netns for peernet2id_alloc()
virtio-net: add a missing synchronize_net()
Linux 4.4.37
arm64: suspend: Reconfigure PSTATE after resume from idle
arm64: mm: Set PSTATE.PAN from the cpu_enable_pan() call
arm64: cpufeature: Schedule enable() calls instead of calling them via IPI
pwm: Fix device reference leak
mwifiex: printk() overflow with 32-byte SSIDs
PCI: Set Read Completion Boundary to 128 iff Root Port supports it (_HPX)
PCI: Export pcie_find_root_port
rcu: Fix soft lockup for rcu_nocb_kthread
ALSA: pcm : Call kill_fasync() in stream lock
x86/traps: Ignore high word of regs->cs in early_fixup_exception()
kasan: update kasan_global for gcc 7
zram: fix unbalanced idr management at hot removal
ARC: Don't use "+l" inline asm constraint
Linux 4.4.36
scsi: mpt3sas: Unblock device after controller reset
flow_dissect: call init_default_flow_dissectors() earlier
mei: fix return value on disconnection
mei: me: fix place for kaby point device ids.
mei: me: disable driver on SPT SPS firmware
drm/radeon: Ensure vblank interrupt is enabled on DPMS transition to on
mpi: Fix NULL ptr dereference in mpi_powm() [ver #3]
parisc: Also flush data TLB in flush_icache_page_asm
parisc: Fix race in pci-dma.c
parisc: Fix races in parisc_setup_cache_timing()
NFSv4.x: hide array-bounds warning
apparmor: fix change_hat not finding hat after policy replacement
cfg80211: limit scan results cache size
tile: avoid using clocksource_cyc2ns with absolute cycle count
scsi: mpt3sas: Fix secure erase premature termination
Fix USB CB/CBI storage devices with CONFIG_VMAP_STACK=y
USB: serial: ftdi_sio: add support for TI CC3200 LaunchPad
USB: serial: cp210x: add ID for the Zone DPMX
usb: chipidea: move the lock initialization to core file
KVM: x86: check for pic and ioapic presence before use
KVM: x86: drop error recovery in em_jmp_far and em_ret_far
iommu/vt-d: Fix IOMMU lookup for SR-IOV Virtual Functions
iommu/vt-d: Fix PASID table allocation
sched: tune: Fix lacking spinlock initialization
UPSTREAM: trace: Update documentation for mono, mono_raw and boot clock
UPSTREAM: trace: Add an option for boot clock as trace clock
UPSTREAM: timekeeping: Add a fast and NMI safe boot clock
ANDROID: goldfish_pipe: fix allmodconfig build
ANDROID: goldfish: goldfish_pipe: fix locking errors
ANDROID: video: goldfishfb: fix platform_no_drv_owner.cocci warnings
ANDROID: goldfish_pipe: fix call_kern.cocci warnings
arm64: rename ranchu defconfig to ranchu64
ANDROID: arch: x86: disable pic for Android toolchain
ANDROID: goldfish_pipe: An implementation of more parallel pipe
ANDROID: goldfish_pipe: bugfixes and performance improvements.
ANDROID: goldfish: Add goldfish sync driver
ANDROID: goldfish: add ranchu defconfigs
ANDROID: goldfish_audio: Clear audio read buffer status after each read
ANDROID: goldfish_events: no extra EV_SYN; register goldfish
ANDROID: goldfish_fb: Set pixclock = 0
ANDROID: goldfish: Enable ACPI-based enumeration for goldfish audio
ANDROID: goldfish: Enable ACPI-based enumeration for goldfish framebuffer
ANDROID: video: goldfishfb: add devicetree bindings
BACKPORT: staging: goldfish: audio: fix compiliation on arm
BACKPORT: Input: goldfish_events - enable ACPI-based enumeration for goldfish events
BACKPORT: goldfish: Enable ACPI-based enumeration for goldfish battery
BACKPORT: drivers: tty: goldfish: Add device tree bindings
BACKPORT: tty: goldfish: support platform_device with id -1
BACKPORT: Input: goldfish_events - add devicetree bindings
BACKPORT: power: goldfish_battery: add devicetree bindings
BACKPORT: staging: goldfish: audio: add devicetree bindings
ANDROID: usb: gadget: function: cleanup: Add blank line after declaration
cpufreq: sched: Fix kernel crash on accessing sysfs file
usb: gadget: f_mtp: simplify ptp NULL pointer check
cgroup: replace unified-hierarchy.txt with a proper cgroup v2 documentation
cgroup: rename Documentation/cgroups/ to Documentation/cgroup-legacy/
cgroup: replace __DEVEL__sane_behavior with cgroup2 fs type
writeback: initialize inode members that track writeback history
mm: page_alloc: generalize the dirty balance reserve
block: fix module reference leak on put_disk() call for cgroups throttle
Linux 4.4.35
netfilter: nft_dynset: fix element timeout for HZ != 1000
IB/cm: Mark stale CM id's whenever the mad agent was unregistered
IB/uverbs: Fix leak of XRC target QPs
IB/core: Avoid unsigned int overflow in sg_alloc_table
IB/mlx5: Fix fatal error dispatching
IB/mlx5: Use cache line size to select CQE stride
IB/mlx4: Fix create CQ error flow
IB/mlx4: Check gid_index return value
PM / sleep: don't suspend parent when async child suspend_{noirq, late} fails
PM / sleep: fix device reference leak in test_suspend
uwb: fix device reference leaks
mfd: core: Fix device reference leak in mfd_clone_cell
iwlwifi: pcie: fix SPLC structure parsing
rtc: omap: Fix selecting external osc
clk: mmp: mmp2: fix return value check in mmp2_clk_init()
clk: mmp: pxa168: fix return value check in pxa168_clk_init()
clk: mmp: pxa910: fix return value check in pxa910_clk_init()
drm/amdgpu: Attach exclusive fence to prime exported bo's. (v5)
crypto: caam - do not register AES-XTS mode on LP units
ext4: sanity check the block and cluster size at mount time
kbuild: Steal gcc's pie from the very beginning
x86/kexec: add -fno-PIE
scripts/has-stack-protector: add -fno-PIE
kbuild: add -fno-PIE
i2c: mux: fix up dependencies
can: bcm: fix warning in bcm_connect/proc_register
mfd: intel-lpss: Do not put device in reset state on suspend
fuse: fix fuse_write_end() if zero bytes were copied
KVM: Disable irq while unregistering user notifier
KVM: x86: fix missed SRCU usage in kvm_lapic_set_vapic_addr
x86/cpu/AMD: Fix cpu_llc_id for AMD Fam17h systems
Linux 4.4.34
sparc64: Delete now unused user copy fixup functions.
sparc64: Delete now unused user copy assembler helpers.
sparc64: Convert U3copy_{from,to}_user to accurate exception reporting.
sparc64: Convert NG2copy_{from,to}_user to accurate exception reporting.
sparc64: Convert NGcopy_{from,to}_user to accurate exception reporting.
sparc64: Convert NG4copy_{from,to}_user to accurate exception reporting.
sparc64: Convert U1copy_{from,to}_user to accurate exception reporting.
sparc64: Convert GENcopy_{from,to}_user to accurate exception reporting.
sparc64: Convert copy_in_user to accurate exception reporting.
sparc64: Prepare to move to more saner user copy exception handling.
sparc64: Delete __ret_efault.
sparc64: Handle extremely large kernel TLB range flushes more gracefully.
sparc64: Fix illegal relative branches in hypervisor patched TLB cross-call code.
sparc64: Fix instruction count in comment for __hypervisor_flush_tlb_pending.
sparc64: Fix illegal relative branches in hypervisor patched TLB code.
sparc64: Handle extremely large kernel TSB range flushes sanely.
sparc: Handle negative offsets in arch_jump_label_transform
sparc64 mm: Fix base TSB sizing when hugetlb pages are used
sparc: serial: sunhv: fix a double lock bug
sparc: Don't leak context bits into thread->fault_address
tty: Prevent ldisc drivers from re-using stale tty fields
tcp: take care of truncations done by sk_filter()
ipv4: use new_gw for redirect neigh lookup
net: __skb_flow_dissect() must cap its return value
sock: fix sendmmsg for partial sendmsg
fib_trie: Correct /proc/net/route off by one error
sctp: assign assoc_id earlier in __sctp_connect
ipv6: dccp: add missing bind_conflict to dccp_ipv6_mapped
ipv6: dccp: fix out of bound access in dccp_v6_err()
dccp: fix out of bound access in dccp_v4_err()
dccp: do not send reset to already closed sockets
tcp: fix potential memory corruption
ip6_tunnel: Clear IP6CB in ip6tunnel_xmit()
bgmac: stop clearing DMA receive control register right after it is set
net: mangle zero checksum in skb_checksum_help()
net: clear sk_err_soft in sk_clone_lock()
dctcp: avoid bogus doubling of cwnd after loss
ARM: 8485/1: cpuidle: remove cpu parameter from the cpuidle_ops suspend hook
Linux 4.4.33
netfilter: fix namespace handling in nf_log_proc_dostring
btrfs: qgroup: Prevent qgroup->reserved from going subzero
mmc: mxs: Initialize the spinlock prior to using it
ASoC: sun4i-codec: return error code instead of NULL when create_card fails
ACPI / APEI: Fix incorrect return value of ghes_proc()
i40e: fix call of ndo_dflt_bridge_getlink()
hwrng: core - Don't use a stack buffer in add_early_randomness()
lib/genalloc.c: start search from start of chunk
mei: bus: fix received data size check in NFC fixup
iommu/vt-d: Fix dead-locks in disable_dmar_iommu() path
iommu/amd: Free domain id when free a domain of struct dma_ops_domain
tty/serial: at91: fix hardware handshake on Atmel platforms
dmaengine: at_xdmac: fix spurious flag status for mem2mem transfers
drm/i915: Respect alternate_ddc_pin for all DDI ports
KVM: MIPS: Precalculate MMIO load resume PC
scsi: mpt3sas: Fix for block device of raid exists even after deleting raid disk
scsi: qla2xxx: Fix scsi scan hang triggered if adapter fails during init
iio: orientation: hid-sensor-rotation: Add PM function (fix non working driver)
iio: hid-sensors: Increase the precision of scale to fix wrong reading interpretation.
clk: qoriq: Don't allow CPU clocks higher than starting value
toshiba-wmi: Fix loading the driver on non Toshiba laptops
drbd: Fix kernel_sendmsg() usage - potential NULL deref
usb: gadget: u_ether: remove interrupt throttling
USB: cdc-acm: fix TIOCMIWAIT
staging: nvec: remove managed resource from PS2 driver
Revert "staging: nvec: ps2: change serio type to passthrough"
drivers: staging: nvec: remove bogus reset command for PS/2 interface
staging: iio: ad5933: avoid uninitialized variable in error case
pinctrl: cherryview: Prevent possible interrupt storm on resume
pinctrl: cherryview: Serialize register access in suspend/resume
ARC: timer: rtc: implement read loop in "C" vs. inline asm
s390/hypfs: Use get_free_page() instead of kmalloc to ensure page alignment
coredump: fix unfreezable coredumping task
swapfile: fix memory corruption via malformed swapfile
dib0700: fix nec repeat handling
ASoC: cs4270: fix DAPM stream name mismatch
ALSA: info: Limit the proc text input size
ALSA: info: Return error for invalid read/write
arm64: Enable KPROBES/HIBERNATION/CORESIGHT in defconfig
arm64: kvm: allows kvm cpu hotplug
arm64: KVM: Register CPU notifiers when the kernel runs at HYP
arm64: KVM: Skip HYP setup when already running in HYP
arm64: hyp/kvm: Make hyp-stub reject kvm_call_hyp()
arm64: hyp/kvm: Make hyp-stub extensible
arm64: kvm: Move lr save/restore from do_el2_call into EL1
arm64: kvm: deal with kernel symbols outside of linear mapping
arm64: introduce KIMAGE_VADDR as the virtual base of the kernel region
ANDROID: video: adf: Avoid directly referencing user pointers
ANDROID: usb: gadget: audio_source: fix comparison of distinct pointer types
android: binder: support for file-descriptor arrays.
android: binder: support for scatter-gather.
android: binder: add extra size to allocator.
android: binder: refactor binder_transact()
android: binder: support multiple /dev instances.
android: binder: deal with contexts in debugfs.
android: binder: support multiple context managers.
android: binder: split flat_binder_object.
disable aio support in recommended configuration
Linux 4.4.32
scsi: megaraid_sas: fix macro MEGASAS_IS_LOGICAL to avoid regression
drm/radeon: fix DP mode validation
drm/radeon/dp: add back special handling for NUTMEG
drm/amdgpu: fix DP mode validation
drm/amdgpu/dp: add back special handling for NUTMEG
KVM: MIPS: Drop other CPU ASIDs on guest MMU changes
Revert KVM: MIPS: Drop other CPU ASIDs on guest MMU changes
of: silence warnings due to max() usage
packet: on direct_xmit, limit tso and csum to supported devices
sctp: validate chunk len before actually using it
net sched filters: fix notification of filter delete with proper handle
udp: fix IP_CHECKSUM handling
net: sctp, forbid negative length
ipv4: use the right lock for ping_group_range
ipv4: disable BH in set_ping_group_range()
net: add recursion limit to GRO
rtnetlink: Add rtnexthop offload flag to compare mask
bridge: multicast: restore perm router ports on multicast enable
net: pktgen: remove rcu locking in pktgen_change_name()
ipv6: correctly add local routes when lo goes up
ip6_tunnel: fix ip6_tnl_lookup
ipv6: tcp: restore IP6CB for pktoptions skbs
netlink: do not enter direct reclaim from netlink_dump()
packet: call fanout_release, while UNREGISTERING a netdev
net: Add netdev all_adj_list refcnt propagation to fix panic
net/sched: act_vlan: Push skb->data to mac_header prior calling skb_vlan_*() functions
net: pktgen: fix pkt_size
net: fec: set mac address unconditionally
tg3: Avoid NULL pointer dereference in tg3_io_error_detected()
ipmr, ip6mr: fix scheduling while atomic and a deadlock with ipmr_get_route
ip6_gre: fix flowi6_proto value in ip6gre_xmit_other()
tcp: fix a compile error in DBGUNDO()
tcp: fix wrong checksum calculation on MTU probing
net: avoid sk_forward_alloc overflows
tcp: fix overflow in __tcp_retransmit_skb()
arm64/kvm: fix build issue on kvm debug
arm64: ptdump: Indicate whether memory should be faulting
arm64: Add support for ARCH_SUPPORTS_DEBUG_PAGEALLOC
arm64: Drop alloc function from create_mapping
arm64: allow vmalloc regions to be set with set_memory_*
arm64: kernel: implement ACPI parking protocol
arm64: mm: create new fine-grained mappings at boot
arm64: ensure _stext and _etext are page-aligned
arm64: mm: allow passing a pgdir to alloc_init_*
arm64: mm: allocate pagetables anywhere
arm64: mm: use fixmap when creating page tables
arm64: mm: add functions to walk tables in fixmap
arm64: mm: add __{pud,pgd}_populate
arm64: mm: avoid redundant __pa(__va(x))
Linux 4.4.31
HID: usbhid: add ATEN CS962 to list of quirky devices
ubi: fastmap: Fix add_vol() return value test in ubi_attach_fastmap()
kvm: x86: Check memopp before dereference (CVE-2016-8630)
tty: vt, fix bogus division in csi_J
usb: dwc3: Fix size used in dma_free_coherent()
pwm: Unexport children before chip removal
UBI: fastmap: scrub PEB when bitflips are detected in a free PEB EC header
Disable "frame-address" warning
smc91x: avoid self-comparison warning
cgroup: avoid false positive gcc-6 warning
drm/exynos: fix error handling in exynos_drm_subdrv_open
mm/cma: silence warnings due to max() usage
ARM: 8584/1: floppy: avoid gcc-6 warning
powerpc/ptrace: Fix out of bounds array access warning
x86/xen: fix upper bound of pmd loop in xen_cleanhighmap()
perf build: Fix traceevent plugins build race
drm/dp/mst: Check peer device type before attempting EDID read
drm/radeon: drop register readback in cayman_cp_int_cntl_setup
drm/radeon/si_dpm: workaround for SI kickers
drm/radeon/si_dpm: Limit clocks on HD86xx part
Revert "drm/radeon: fix DP link training issue with second 4K monitor"
mmc: dw_mmc-pltfm: fix the potential NULL pointer dereference
scsi: arcmsr: Send SYNCHRONIZE_CACHE command to firmware
scsi: scsi_debug: Fix memory leak if LBP enabled and module is unloaded
scsi: megaraid_sas: Fix data integrity failure for JBOD (passthrough) devices
mac80211: discard multicast and 4-addr A-MSDUs
firewire: net: fix fragmented datagram_size off-by-one
firewire: net: guard against rx buffer overflows
Input: i8042 - add XMG C504 to keyboard reset table
dm mirror: fix read error on recovery after default leg failure
virtio: console: Unlock vqs while freeing buffers
virtio_ring: Make interrupt suppression spec compliant
parisc: Ensure consistent state when switching to kernel stack at syscall entry
ovl: fsync after copy-up
KVM: MIPS: Make ERET handle ERL before EXL
KVM: x86: fix wbinvd_dirty_mask use-after-free
dm: free io_barrier after blk_cleanup_queue call
USB: serial: cp210x: fix tiocmget error handling
tty: limit terminal size to 4M chars
xhci: add restart quirk for Intel Wildcatpoint PCH
hv: do not lose pending heartbeat vmbus packets
vt: clear selection before resizing
Fix potential infoleak in older kernels
GenWQE: Fix bad page access during abort of resource allocation
usb: increase ohci watchdog delay to 275 msec
xhci: use default USB_RESUME_TIMEOUT when resuming ports.
USB: serial: ftdi_sio: add support for Infineon TriBoard TC2X7
USB: serial: fix potential NULL-dereference at probe
usb: gadget: function: u_ether: don't starve tx request queue
mei: txe: don't clean an unprocessed interrupt cause.
ubifs: Fix regression in ubifs_readdir()
ubifs: Abort readdir upon error
btrfs: fix races on root_log_ctx lists
ANDROID: binder: Clear binder and cookie when setting handle in flat binder struct
ANDROID: binder: Add strong ref checks
ALSA: hda - Fix headset mic detection problem for two Dell laptops
ALSA: hda - Adding a new group of pin cfg into ALC295 pin quirk table
ALSA: hda - allow 40 bit DMA mask for NVidia devices
ALSA: hda - Raise AZX_DCAPS_RIRB_DELAY handling into top drivers
ALSA: hda - Merge RIRB_PRE_DELAY into CTX_WORKAROUND caps
ALSA: usb-audio: Add quirk for Syntek STK1160
KEYS: Fix short sprintf buffer in /proc/keys show function
mm: memcontrol: do not recurse in direct reclaim
mm/list_lru.c: avoid error-path NULL pointer deref
libxfs: clean up _calc_dquots_per_chunk
h8300: fix syscall restarting
drm/dp/mst: Clear port->pdt when tearing down the i2c adapter
i2c: core: fix NULL pointer dereference under race condition
i2c: xgene: Avoid dma_buffer overrun
arm64:cpufeature ARM64_NCAPS is the indicator of last feature
arm64: hibernate: Refuse to hibernate if the boot cpu is offline
PM / sleep: Add support for read-only sysfs attributes
arm64: kernel: Add support for hibernate/suspend-to-disk
arm64: mm: add functions to walk page tables by PA
arm64: mm: move pte_* macros
PM / Hibernate: Call flush_icache_range() on pages restored in-place
arm64: Add new asm macro copy_page
arm64: Promote KERNEL_START/KERNEL_END definitions to a header file
arm64: kernel: Include _AC definition in page.h
arm64: Change cpu_resume() to enable mmu early then access sleep_sp by va
arm64: kernel: Rework finisher callback out of __cpu_suspend_enter()
arm64: Cleanup SCTLR flags
arm64: Fold proc-macros.S into assembler.h
arm/arm64: KVM: Add hook for C-based stage2 init
arm/arm64: KVM: Detect vGIC presence at runtime
arm64: KVM: Add support for 16-bit VMID
arm: KVM: Make kvm_arm.h friendly to assembly code
arm/arm64: KVM: Remove unreferenced S2_PGD_ORDER
arm64: KVM: debug: Remove spurious inline attributes
ARM: KVM: Cleanup exception injection
arm64: KVM: Remove weak attributes
arm64: KVM: Cleanup asm-offset.c
arm64: KVM: Turn system register numbers to an enum
arm64: KVM: VHE: Patch out use of HVC
arm64: Add ARM64_HAS_VIRT_HOST_EXTN feature
arm/arm64: Add new is_kernel_in_hyp_mode predicate
arm64: KVM: Move away from the assembly version of the world switch
arm64: KVM: Map the kernel RO section into HYP
arm64: KVM: Add compatibility aliases
arm64: KVM: Implement vgic-v3 save/restore
arm64: KVM: Add panic handling
arm64: KVM: HYP mode entry points
arm64: KVM: Implement TLB handling
arm64: KVM: Implement fpsimd save/restore
arm64: KVM: Implement the core world switch
arm64: KVM: Add patchable function selector
arm64: KVM: Implement guest entry
arm64: KVM: Implement debug save/restore
arm64: KVM: Implement 32bit system register save/restore
arm64: KVM: Implement system register save/restore
arm64: KVM: Implement timer save/restore
arm64: KVM: Implement vgic-v2 save/restore
arm64: KVM: Add a HYP-specific header file
KVM: arm/arm64: vgic-v3: Make the LR indexing macro public
arm64: Add macros to read/write system registers
Linux 4.4.30
Revert "fix minor infoleak in get_user_ex()"
Revert "x86/mm: Expand the exception table logic to allow new handling options"
Linux 4.4.29
ARM: pxa: pxa_cplds: fix interrupt handling
powerpc/nvram: Fix an incorrect partition merge
mpt3sas: Don't spam logs if logging level is 0
perf symbols: Fixup symbol sizes before picking best ones
perf symbols: Check symbol_conf.allow_aliases for kallsyms loading too
perf hists browser: Fix event group display
clk: divider: Fix clk_divider_round_rate() to use clk_readl()
clk: qoriq: fix a register offset error
s390/con3270: fix insufficient space padding
s390/con3270: fix use of uninitialised data
s390/cio: fix accidental interrupt enabling during resume
x86/mm: Expand the exception table logic to allow new handling options
dmaengine: ipu: remove bogus NO_IRQ reference
power: bq24257: Fix use of uninitialized pointer bq->charger
staging: r8188eu: Fix scheduling while atomic splat
ASoC: dapm: Fix kcontrol creation for output driver widget
ASoC: dapm: Fix value setting for _ENUM_DOUBLE MUX's second channel
ASoC: dapm: Fix possible uninitialized variable in snd_soc_dapm_get_volsw()
ASoC: topology: Fix error return code in soc_tplg_dapm_widget_create()
hwrng: omap - Only fail if pm_runtime_get_sync returns < 0
crypto: arm/ghash-ce - add missing async import/export
crypto: gcm - Fix IV buffer size in crypto_gcm_setkey
mwifiex: correct aid value during tdls setup
spi: spi-fsl-dspi: Drop extra spi_master_put in device remove function
ARM: clk-imx35: fix name for ckil clk
uio: fix dmem_region_start computation
genirq/generic_chip: Add irq_unmap callback
perf stat: Fix interval output values
powerpc/eeh: Null check uses of eeh_pe_bus_get
tunnels: Remove encapsulation offloads on decap.
tunnels: Don't apply GRO to multiple layers of encapsulation.
ipip: Properly mark ipip GRO packets as encapsulated.
posix_acl: Clear SGID bit when setting file permissions
brcmfmac: avoid potential stack overflow in brcmf_cfg80211_start_ap()
mm/hugetlb: fix memory offline with hugepage size > memory block size
drm/i915: Unalias obj->phys_handle and obj->userptr
drm/i915: Account for TSEG size when determining 865G stolen base
Revert "drm/i915: Check live status before reading edid"
drm/i915/gen9: fix the WaWmMemoryReadLatency implementation
xenbus: don't look up transaction IDs for ordinary writes
drm/vmwgfx: Limit the user-space command buffer size
drm/radeon: change vblank_time's calculation method to reduce computational error.
drm/radeon/si/dpm: fix phase shedding setup
drm/radeon: narrow asic_init for virtualization
drm/amdgpu: change vblank_time's calculation method to reduce computational error.
drm/amdgpu/dce11: add missing drm_mode_config_cleanup call
drm/amdgpu/dce11: disable hpd on local panels
drm/amdgpu/dce8: disable hpd on local panels
drm/amdgpu/dce10: disable hpd on local panels
drm/amdgpu: fix IB alignment for UVD
drm/prime: Pass the right module owner through to dma_buf_export()
Linux 4.4.28
target: Don't override EXTENDED_COPY xcopy_pt_cmd SCSI status code
target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE
target: Re-add missing SCF_ACK_KREF assignment in v4.1.y
ubifs: Fix xattr_names length in exit paths
jbd2: fix incorrect unlock on j_list_lock
ext4: do not advertise encryption support when disabled
mmc: rtsx_usb_sdmmc: Handle runtime PM while changing the led
mmc: rtsx_usb_sdmmc: Avoid keeping the device runtime resumed when unused
mmc: core: Annotate cmd_hdr as __le32
powerpc/mm: Prevent unlikely crash in copro_calculate_slb()
ceph: fix error handling in ceph_read_iter
arm64: kernel: Init MDCR_EL2 even in the absence of a PMU
arm64: percpu: rewrite ll/sc loops in assembly
memstick: rtsx_usb_ms: Manage runtime PM when accessing the device
memstick: rtsx_usb_ms: Runtime resume the device when polling for cards
isofs: Do not return EACCES for unknown filesystems
irqchip/gic-v3-its: Fix entry size mask for GITS_BASER
s390/mm: fix gmap tlb flush issues
Using BUG_ON() as an assert() is _never_ acceptable
mm: filemap: fix mapping->nrpages double accounting in fuse
mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()
acpi, nfit: check for the correct event code in notifications
net/mlx4_core: Allow resetting VF admin mac to zero
bnx2x: Prevent false warning for lack of FC NPIV
PKCS#7: Don't require SpcSpOpusInfo in Authenticode pkcs7 signatures
hpsa: correct skipping masked peripherals
sd: Fix rw_max for devices that report an optimal xfer size
irqchip/gicv3: Handle loop timeout proper
kvm: x86: memset whole irq_eoi
x86/e820: Don't merge consecutive E820_PRAM ranges
blkcg: Unlock blkcg_pol_mutex only once when cpd == NULL
Fix regression which breaks DFS mounting
Cleanup missing frees on some ioctls
Do not send SMB3 SET_INFO request if nothing is changing
SMB3: GUIDs should be constructed as random but valid uuids
Set previous session id correctly on SMB3 reconnect
Display number of credits available
Clarify locking of cifs file and tcon structures and make more granular
fs/cifs: keep guid when assigning fid to fileinfo
cifs: Limit the overall credit acquired
fs/super.c: fix race between freeze_super() and thaw_super()
arc: don't leak bits of kernel stack into coredump
lightnvm: ensure that nvm_dev_ops can be used without CONFIG_NVM
ipc/sem.c: fix complex_count vs. simple op race
mm: filemap: don't plant shadow entries without radix tree node
metag: Only define atomic_dec_if_positive conditionally
scsi: Fix use-after-free
NFSv4.2: Fix a reference leak in nfs42_proc_layoutstats_generic
NFSv4: Open state recovery must account for file permission changes
NFSv4: nfs4_copy_delegation_stateid() must fail if the delegation is invalid
NFSv4: Don't report revoked delegations as valid in nfs_have_delegation()
sunrpc: fix write space race causing stalls
Input: elantech - add Fujitsu Lifebook E556 to force crc_enabled
Input: elantech - force needed quirks on Fujitsu H760
Input: i8042 - skip selftest on ASUS laptops
lib: add "on"/"off" support to kstrtobool
lib: update single-char callers of strtobool()
lib: move strtobool() to kstrtobool()
MIPS: ptrace: Fix regs_return_value for kernel context
MIPS: Fix -mabi=64 build of vdso.lds
ALSA: hda - Fix a failure of micmute led when having multi adcs
cx231xx: fix GPIOs for Pixelview SBTVD hybrid
cx231xx: don't return error on success
mb86a20s: fix demod settings
mb86a20s: fix the locking logic
ovl: copy_up_xattr(): use strnlen
ovl: Fix info leak in ovl_lookup_temp()
fbdev/efifb: Fix 16 color palette entry calculation
scsi: zfcp: spin_lock_irqsave() is not nestable
zfcp: trace full payload of all SAN records (req,resp,iels)
zfcp: fix payload trace length for SAN request&response
zfcp: fix D_ID field with actual value on tracing SAN responses
zfcp: restore tracing of handle for port and LUN with HBA records
zfcp: trace on request for open and close of WKA port
zfcp: restore: Dont use 0 to indicate invalid LUN in rec trace
zfcp: retain trace level for SCSI and HBA FSF response records
zfcp: close window with unblocked rport during rport gone
zfcp: fix ELS/GS request&response length for hardware data router
zfcp: fix fc_host port_type with NPIV
ubi: Deal with interrupted erasures in WL
powerpc/pseries: Fix stack corruption in htpe code
powerpc/64: Fix incorrect return value from __copy_tofrom_user
powerpc/powernv: Use CPU-endian PEST in pnv_pci_dump_p7ioc_diag_data()
powerpc/powernv: Use CPU-endian hub diag-data type in pnv_eeh_get_and_dump_hub_diag()
powerpc/powernv: Pass CPU-endian PE number to opal_pci_eeh_freeze_clear()
powerpc/vdso64: Use double word compare on pointers
dm crypt: fix crash on exit
dm mpath: check if path's request_queue is dying in activate_path()
dm: return correct error code in dm_resume()'s retry loop
dm: mark request_queue dead before destroying the DM device
perf intel-pt: Fix MTC timestamp calculation for large MTC periods
perf intel-pt: Fix estimated timestamps for cycle-accurate mode
perf intel-pt: Fix snapshot overlap detection decoder errors
pstore/ram: Use memcpy_fromio() to save old buffer
pstore/ram: Use memcpy_toio instead of memcpy
pstore/core: drop cmpxchg based updates
pstore/ramoops: fixup driver removal
parisc: Increase initial kernel mapping size
parisc: Fix kernel memory layout regarding position of __gp
parisc: Increase KERNEL_INITIAL_SIZE for 32-bit SMP kernels
cpufreq: intel_pstate: Fix unsafe HWP MSR access
platform: don't return 0 from platform_get_irq[_byname]() on error
PCI: Mark Atheros AR9580 to avoid bus reset
mmc: sdhci: cast unsigned int to unsigned long long to avoid unexpeted error
mmc: block: don't use CMD23 with very old MMC cards
rtlwifi: Fix missing country code for Great Britain
PM / devfreq: event: remove duplicate devfreq_event_get_drvdata()
clk: imx6: initialize GPU clocks
regulator: tps65910: Work around silicon erratum SWCZ010
mei: me: add kaby point device ids
gpio: mpc8xxx: Correct irq handler function
cgroup: Change from CAP_SYS_NICE to CAP_SYS_RESOURCE for cgroup migration permissions
UPSTREAM: cpu/hotplug: Handle unbalanced hotplug enable/disable
UPSTREAM: arm64: kaslr: fix breakage with CONFIG_MODVERSIONS=y
UPSTREAM: arm64: kaslr: keep modules close to the kernel when DYNAMIC_FTRACE=y
cgroup: Remove leftover instances of allow_attach
BACKPORT: lib: harden strncpy_from_user
CHROMIUM: cgroups: relax permissions on moving tasks between cgroups
CHROMIUM: remove Android's cgroup generic permissions checks
Linux 4.4.27
cfq: fix starvation of asynchronous writes
vfs: move permission checking into notify_change() for utimes(NULL)
dlm: free workqueues after the connections
crypto: vmx - Fix memory corruption caused by p8_ghash
crypto: ghash-generic - move common definitions to a new header file
ext4: release bh in make_indexed_dir
ext4: allow DAX writeback for hole punch
ext4: fix memory leak in ext4_insert_range()
ext4: reinforce check of i_dtime when clearing high fields of uid and gid
ext4: enforce online defrag restriction for encrypted files
scsi: ibmvfc: Fix I/O hang when port is not mapped
scsi: arcmsr: Simplify user_len checking
scsi: arcmsr: Buffer overflow in arcmsr_iop_message_xfer()
async_pq_val: fix DMA memory leak
reiserfs: switch to generic_{get,set,remove}xattr()
reiserfs: Unlock superblock before calling reiserfs_quota_on_mount()
ASoC: Intel: Atom: add a missing star in a memcpy call
brcmfmac: fix memory leak in brcmf_fill_bss_param
i40e: avoid NULL pointer dereference and recursive errors on early PCI error
fuse: fix killing s[ug]id in setattr
fuse: invalidate dir dentry after chmod
fuse: listxattr: verify xattr list
drivers: base: dma-mapping: page align the size when unmap_kernel_range
btrfs: assign error values to the correct bio structs
serial: 8250_dw: Check the data->pclk when get apb_pclk
arm64: Use PoU cache instr for I/D coherency
arm64: mm: add code to safely replace TTBR1_EL1
arm64: mm: place __cpu_setup in .text
arm64: add function to install the idmap
arm64: unmap idmap earlier
arm64: unify idmap removal
arm64: mm: place empty_zero_page in bss
arm64: head.S: use memset to clear BSS
arm64: mm: specialise pagetable allocators
arm64: mm: remove pointless PAGE_MASKing
asm-generic: Fix local variable shadow in __set_fixmap_offset
arm64: mm: fold alternatives into .init
ARM: 8511/1: ARM64: kernel: PSCI: move PSCI idle management code to drivers/firmware
ARM: 8481/2: drivers: psci: replace psci firmware calls
ARM: 8480/2: arm64: add implementation for arm-smccc
ARM: 8479/2: add implementation for arm-smccc
ARM: 8478/2: arm/arm64: add arm-smccc
ARM: 8510/1: rework ARM_CPU_SUSPEND dependencies
ARM: 8458/1: bL_switcher: add GIC dependency
Linux 4.4.26
mm: remove gup_flags FOLL_WRITE games from __get_user_pages()
x86/build: Build compressed x86 kernels as PIE
arm64: Remove stack duplicating code from jprobes
arm64: kprobes: Add KASAN instrumentation around stack accesses
arm64: kprobes: Cleanup jprobe_return
arm64: kprobes: Fix overflow when saving stack
arm64: kprobes: WARN if attempting to step with PSTATE.D=1
kprobes: Add arm64 case in kprobe example module
arm64: Add kernel return probes support (kretprobes)
arm64: Add trampoline code for kretprobes
arm64: kprobes instruction simulation support
arm64: Treat all entry code as non-kprobe-able
arm64: Blacklist non-kprobe-able symbol
arm64: Kprobes with single stepping support
arm64: add conditional instruction simulation support
arm64: Add more test functions to insn.c
arm64: Add HAVE_REGS_AND_STACK_ACCESS_API feature
Linux 4.4.25
tpm_crb: fix crb_req_canceled behavior
tpm: fix a race condition in tpm2_unseal_trusted()
ima: use file_dentry()
ARM: cpuidle: Fix error return code
ARM: dts: MSM8064 remove flags from SPMI/MPP IRQs
ARM: dts: mvebu: armada-390: add missing compatibility string and bracket
x86/dumpstack: Fix x86_32 kernel_stack_pointer() previous stack access
x86/irq: Prevent force migration of irqs which are not in the vector domain
x86/boot: Fix kdump, cleanup aborted E820_PRAM max_pfn manipulation
KVM: PPC: BookE: Fix a sanity check
KVM: MIPS: Drop other CPU ASIDs on guest MMU changes
KVM: PPC: Book3s PR: Allow access to unprivileged MMCR2 register
mfd: wm8350-i2c: Make sure the i2c regmap functions are compiled
mfd: 88pm80x: Double shifting bug in suspend/resume
mfd: atmel-hlcdc: Do not sleep in atomic context
mfd: rtsx_usb: Avoid setting ucr->current_sg.status
ALSA: usb-line6: use the same declaration as definition in header for MIDI manufacturer ID
ALSA: usb-audio: Extend DragonFly dB scale quirk to cover other variants
ALSA: ali5451: Fix out-of-bound position reporting
timekeeping: Fix __ktime_get_fast_ns() regression
time: Add cycles to nanoseconds translation
mm: Fix build for hardened usercopy
ANDROID: binder: Clear binder and cookie when setting handle in flat binder struct
ANDROID: binder: Add strong ref checks
UPSTREAM: staging/android/ion : fix a race condition in the ion driver
ANDROID: android-base: CONFIG_HARDENED_USERCOPY=y
UPSTREAM: fs/proc/kcore.c: Add bounce buffer for ktext data
UPSTREAM: fs/proc/kcore.c: Make bounce buffer global for read
BACKPORT: arm64: Correctly bounds check virt_addr_valid
Fix a build breakage in IO latency hist code.
UPSTREAM: efi: include asm/early_ioremap.h not asm/efi.h to get early_memremap
UPSTREAM: ia64: split off early_ioremap() declarations into asm/early_ioremap.h
FROMLIST: arm64: Enable CONFIG_ARM64_SW_TTBR0_PAN
FROMLIST: arm64: xen: Enable user access before a privcmd hvc call
FROMLIST: arm64: Handle faults caused by inadvertent user access with PAN enabled
FROMLIST: arm64: Disable TTBR0_EL1 during normal kernel execution
FROMLIST: arm64: Introduce uaccess_{disable,enable} functionality based on TTBR0_EL1
FROMLIST: arm64: Factor out TTBR0_EL1 post-update workaround into a specific asm macro
FROMLIST: arm64: Factor out PAN enabling/disabling into separate uaccess_* macros
UPSTREAM: arm64: Handle el1 synchronous instruction aborts cleanly
UPSTREAM: arm64: include alternative handling in dcache_by_line_op
UPSTREAM: arm64: fix "dc cvau" cache operation on errata-affected core
UPSTREAM: Revert "arm64: alternatives: add enable parameter to conditional asm macros"
UPSTREAM: arm64: Add new asm macro copy_page
UPSTREAM: arm64: kill ESR_LNX_EXEC
UPSTREAM: arm64: add macro to extract ESR_ELx.EC
UPSTREAM: arm64: mm: mark fault_info table const
UPSTREAM: arm64: fix dump_instr when PAN and UAO are in use
BACKPORT: arm64: Fold proc-macros.S into assembler.h
UPSTREAM: arm64: choose memstart_addr based on minimum sparsemem section alignment
UPSTREAM: arm64/mm: ensure memstart_addr remains sufficiently aligned
UPSTREAM: arm64/kernel: fix incorrect EL0 check in inv_entry macro
UPSTREAM: arm64: Add macros to read/write system registers
UPSTREAM: arm64/efi: refactor EFI init and runtime code for reuse by 32-bit ARM
UPSTREAM: arm64/efi: split off EFI init and runtime code for reuse by 32-bit ARM
UPSTREAM: arm64/efi: mark UEFI reserved regions as MEMBLOCK_NOMAP
BACKPORT: arm64: only consider memblocks with NOMAP cleared for linear mapping
UPSTREAM: mm/memblock: add MEMBLOCK_NOMAP attribute to memblock memory table
ANDROID: dm: android-verity: Remove fec_header location constraint
BACKPORT: audit: consistently record PIDs with task_tgid_nr()
android-base.cfg: Enable kernel ASLR
UPSTREAM: vmlinux.lds.h: allow arch specific handling of ro_after_init data section
UPSTREAM: arm64: spinlock: fix spin_unlock_wait for LSE atomics
UPSTREAM: arm64: avoid TLB conflict with CONFIG_RANDOMIZE_BASE
UPSTREAM: arm64: Only select ARM64_MODULE_PLTS if MODULES=y
sched: Add Kconfig option DEFAULT_USE_ENERGY_AWARE to set ENERGY_AWARE feature flag
sched/fair: remove printk while schedule is in progress
ANDROID: fs: FS tracepoints to track IO.
sched/walt: Drop arch-specific timer access
ANDROID: fiq_debugger: Pass task parameter to unwind_frame()
eas/sched/fair: Fixing comments in find_best_target.
input: keyreset: switch to orderly_reboot
UPSTREAM: tun: fix transmit timestamp support
UPSTREAM: arch/arm/include/asm/pgtable-3level.h: add pmd_mkclean for THP
net: inet: diag: expose the socket mark to privileged processes.
net: diag: make udp_diag_destroy work for mapped addresses.
net: diag: support SOCK_DESTROY for UDP sockets
net: diag: allow socket bytecode filters to match socket marks
net: diag: slightly refactor the inet_diag_bc_audit error checks.
net: diag: Add support to filter on device index
UPSTREAM: brcmfmac: avoid potential stack overflow in brcmf_cfg80211_start_ap()
Linux 4.4.24
ALSA: hda - Add the top speaker pin config for HP Spectre x360
ALSA: hda - Fix headset mic detection problem for several Dell laptops
ACPICA: acpi_get_sleep_type_data: Reduce warnings
ALSA: hda - Adding one more ALC255 pin definition for headset problem
Revert "usbtmc: convert to devm_kzalloc"
USB: serial: cp210x: Add ID for a Juniper console
Staging: fbtft: Fix bug in fbtft-core
usb: misc: legousbtower: Fix NULL pointer deference
USB: serial: cp210x: fix hardware flow-control disable
dm log writes: fix bug with too large bios
clk: xgene: Add missing parenthesis when clearing divider value
aio: mark AIO pseudo-fs noexec
batman-adv: remove unused callback from batadv_algo_ops struct
IB/mlx4: Use correct subnet-prefix in QP1 mads under SR-IOV
IB/mlx4: Fix code indentation in QP1 MAD flow
IB/mlx4: Fix incorrect MC join state bit-masking on SR-IOV
IB/ipoib: Don't allow MC joins during light MC flush
IB/core: Fix use after free in send_leave function
IB/ipoib: Fix memory corruption in ipoib cm mode connect flow
KVM: nVMX: postpone VMCS changes on MSR_IA32_APICBASE write
dmaengine: at_xdmac: fix to pass correct device identity to free_irq()
kernel/fork: fix CLONE_CHILD_CLEARTID regression in nscd
ASoC: omap-mcpdm: Fix irq resource handling
sysctl: handle error writing UINT_MAX to u32 fields
powerpc/prom: Fix sub-processor option passed to ibm, client-architecture-support
brcmsmac: Initialize power in brcms_c_stf_ss_algo_channel_get()
brcmsmac: Free packet if dma_mapping_error() fails in dma_rxfill
brcmfmac: Fix glob_skb leak in brcmf_sdiod_recv_chain
ASoC: Intel: Skylake: Fix error return code in skl_probe()
pNFS/flexfiles: Fix layoutcommit after a commit to DS
pNFS/files: Fix layoutcommit after a commit to DS
NFS: Don't drop CB requests with invalid principals
svc: Avoid garbage replies when pc_func() returns rpc_drop_reply
dmaengine: at_xdmac: fix debug string
fnic: pci_dma_mapping_error() doesn't return an error code
avr32: off by one in at32_init_pio()
ath9k: Fix programming of minCCA power threshold
gspca: avoid unused variable warnings
em28xx-i2c: rt_mutex_trylock() returns zero on failure
NFC: fdp: Detect errors from fdp_nci_create_conn()
iwlmvm: mvm: set correct state in smart-fifo configuration
tile: Define AT_VECTOR_SIZE_ARCH for ARCH_DLINFO
pstore: drop file opened reference count
blk-mq: actually hook up defer list when running requests
hwrng: omap - Fix assumption that runtime_get_sync will always succeed
ARM: sa1111: fix pcmcia suspend/resume
ARM: shmobile: fix regulator quirk for Gen2
ARM: sa1100: clear reset status prior to reboot
ARM: sa1100: fix 3.6864MHz clock
ARM: sa1100: register clocks early
ARM: sun5i: Fix typo in trip point temperature
regulator: qcom_smd: Fix voltage ranges for pm8x41
regulator: qcom_spmi: Update mvs1/mvs2 switches on pm8941
regulator: qcom_spmi: Add support for get_mode/set_mode on switches
regulator: qcom_spmi: Add support for S4 supply on pm8941
tpm: fix byte-order for the value read by tpm2_get_tpm_pt
printk: fix parsing of "brl=" option
MIPS: uprobes: fix use of uninitialised variable
MIPS: Malta: Fix IOCU disable switch read for MIPS64
MIPS: fix uretprobe implementation
MIPS: uprobes: remove incorrect set_orig_insn
arm64: debug: avoid resetting stepping state machine when TIF_SINGLESTEP
ARM: 8618/1: decompressor: reset ttbcr fields to use TTBR0 on ARMv7
irqchip/gicv3: Silence noisy DEBUG_PER_CPU_MAPS warning
gpio: sa1100: fix irq probing for ucb1x00
usb: gadget: fsl_qe_udc: signedness bug in qe_get_frame()
ceph: fix race during filling readdir cache
iwlwifi: mvm: don't use ret when not initialised
iwlwifi: pcie: fix access to scratch buffer
spi: sh-msiof: Avoid invalid clock generator parameters
hwmon: (adt7411) set bit 3 in CFG1 register
nvmem: Declare nvmem_cell_read() consistently
ipvs: fix bind to link-local mcast IPv6 address in backup
tools/vm/slabinfo: fix an unintentional printf
mmc: pxamci: fix potential oops
drivers/perf: arm_pmu: Fix leak in error path
pinctrl: Flag strict is a field in struct pinmux_ops
pinctrl: uniphier: fix .pin_dbg_show() callback
i40e: avoid null pointer dereference
perf/core: Fix pmu::filter_match for SW-led groups
iwlwifi: mvm: fix a few firmware capability checks
usb: musb: fix DMA for host mode
usb: musb: Fix DMA desired mode for Mentor DMA engine
ARM: 8617/1: dma: fix dma_max_pfn()
ARM: 8616/1: dt: Respect property size when parsing CPUs
drm/radeon/si/dpm: add workaround for for Jet parts
drm/nouveau/fifo/nv04: avoid ramht race against cookie insertion
x86/boot: Initialize FPU and X86_FEATURE_ALWAYS even if we don't have CPUID
x86/init: Fix cr4_init_shadow() on CR4-less machines
can: dev: fix deadlock reported after bus-off
mm,ksm: fix endless looping in allocating memory when ksm enable
mtd: nand: davinci: Reinitialize the HW ECC engine in 4bit hwctl
cpuset: handle race between CPU hotplug and cpuset_hotplug_work
usercopy: fold builtin_const check into inline function
Linux 4.4.23
hostfs: Freeing an ERR_PTR in hostfs_fill_sb_common()
qxl: check for kmap failures
power: supply: max17042_battery: fix model download bug.
power_supply: tps65217-charger: fix missing platform_set_drvdata()
PM / hibernate: Fix rtree_next_node() to avoid walking off list ends
PM / hibernate: Restore processor state before using per-CPU variables
MIPS: paravirt: Fix undefined reference to smp_bootstrap
MIPS: Add a missing ".set pop" in an early commit
MIPS: Avoid a BUG warning during prctl(PR_SET_FP_MODE, ...)
MIPS: Remove compact branch policy Kconfig entries
MIPS: vDSO: Fix Malta EVA mapping to vDSO page structs
MIPS: SMP: Fix possibility of deadlock when bringing CPUs online
MIPS: Fix pre-r6 emulation FPU initialisation
i2c: qup: skip qup_i2c_suspend if the device is already runtime suspended
i2c-eg20t: fix race between i2c init and interrupt enable
btrfs: ensure that file descriptor used with subvol ioctls is a dir
nl80211: validate number of probe response CSA counters
can: flexcan: fix resume function
mm: delete unnecessary and unsafe init_tlb_ubc()
tracing: Move mutex to protect against resetting of seq data
fix memory leaks in tracing_buffers_splice_read()
power: reset: hisi-reboot: Unmap region obtained by of_iomap
mtd: pmcmsp-flash: Allocating too much in init_msp_flash()
mtd: maps: sa1100-flash: potential NULL dereference
fix fault_in_multipages_...() on architectures with no-op access_ok()
fanotify: fix list corruption in fanotify_get_response()
fsnotify: add a way to stop queueing events on group shutdown
xfs: prevent dropping ioend completions during buftarg wait
autofs: use dentry flags to block walks during expire
autofs races
pwm: Mark all devices as "might sleep"
bridge: re-introduce 'fix parsing of MLDv2 reports'
net: smc91x: fix SMC accesses
Revert "phy: IRQ cannot be shared"
net: dsa: bcm_sf2: Fix race condition while unmasking interrupts
net/mlx5: Added missing check of msg length in verifying its signature
tipc: fix NULL pointer dereference in shutdown()
net/irda: handle iriap_register_lsap() allocation failure
vti: flush x-netns xfrm cache when vti interface is removed
af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock'
Revert "af_unix: Fix splice-bind deadlock"
bonding: Fix bonding crash
megaraid: fix null pointer check in megasas_detach_one().
nouveau: fix nv40_perfctr_next() cleanup regression
Staging: iio: adc: fix indent on break statement
iwlegacy: avoid warning about missing braces
ath9k: fix misleading indentation
am437x-vfpe: fix typo in vpfe_get_app_input_index
Add braces to avoid "ambiguous ‘else’" compiler warnings
net: caif: fix misleading indentation
Makefile: Mute warning for __builtin_return_address(>0) for tracing only
Disable "frame-address" warning
Disable "maybe-uninitialized" warning globally
gcov: disable -Wmaybe-uninitialized warning
Kbuild: disable 'maybe-uninitialized' warning for CONFIG_PROFILE_ALL_BRANCHES
kbuild: forbid kernel directory to contain spaces and colons
tools: Support relative directory path for 'O='
Makefile: revert "Makefile: Document ability to make file.lst and file.S" partially
kbuild: Do not run modules_install and install in paralel
ocfs2: fix start offset to ocfs2_zero_range_for_truncate()
ocfs2/dlm: fix race between convert and migration
crypto: echainiv - Replace chaining with multiplication
crypto: skcipher - Fix blkcipher walk OOM crash
crypto: arm/aes-ctr - fix NULL dereference in tail processing
crypto: arm64/aes-ctr - fix NULL dereference in tail processing
tcp: properly scale window in tcp_v[46]_reqsk_send_ack()
tcp: fix use after free in tcp_xmit_retransmit_queue()
tcp: cwnd does not increase in TCP YeAH
ipv6: release dst in ping_v6_sendmsg
ipv4: panic in leaf_walk_rcu due to stale node pointer
reiserfs: fix "new_insert_key may be used uninitialized ..."
Fix build warning in kernel/cpuset.c
include/linux/kernel.h: change abs() macro so it uses consistent return type
Linux 4.4.22
openrisc: fix the fix of copy_from_user()
avr32: fix 'undefined reference to `___copy_from_user'
ia64: copy_from_user() should zero the destination on access_ok() failure
genirq/msi: Fix broken debug output
ppc32: fix copy_from_user()
sparc32: fix copy_from_user()
mn10300: copy_from_user() should zero on access_ok() failure...
nios2: copy_from_user() should zero the tail of destination
openrisc: fix copy_from_user()
parisc: fix copy_from_user()
metag: copy_from_user() should zero the destination on access_ok() failure
alpha: fix copy_from_user()
asm-generic: make copy_from_user() zero the destination properly
mips: copy_from_user() must zero the destination on access_ok() failure
hexagon: fix strncpy_from_user() error return
sh: fix copy_from_user()
score: fix copy_from_user() and friends
blackfin: fix copy_from_user()
cris: buggered copy_from_user/copy_to_user/clear_user
frv: fix clear_user()
asm-generic: make get_user() clear the destination on errors
ARC: uaccess: get_user to zero out dest in cause of fault
s390: get_user() should zero on failure
score: fix __get_user/get_user
nios2: fix __get_user()
sh64: failing __get_user() should zero
m32r: fix __get_user()
mn10300: failing __get_user() and get_user() should zero
fix minor infoleak in get_user_ex()
microblaze: fix copy_from_user()
avr32: fix copy_from_user()
microblaze: fix __get_user()
fix iov_iter_fault_in_readable()
irqchip/atmel-aic: Fix potential deadlock in ->xlate()
genirq: Provide irq_gc_{lock_irqsave,unlock_irqrestore}() helpers
drm: Only use compat ioctl for addfb2 on X86/IA64
drm: atmel-hlcdc: Fix vertical scaling
net: simplify napi_synchronize() to avoid warnings
kconfig: tinyconfig: provide whole choice blocks to avoid warnings
soc: qcom/spm: shut up uninitialized variable warning
pinctrl: at91-pio4: use %pr format string for resource
mmc: dw_mmc: use resource_size_t to store physical address
drm/i915: Avoid pointer arithmetic in calculating plane surface offset
mpssd: fix buffer overflow warning
gma500: remove annoying deprecation warning
ipv6: addrconf: fix dev refcont leak when DAD failed
sched/core: Fix a race between try_to_wake_up() and a woken up task
Revert "wext: Fix 32 bit iwpriv compatibility issue with 64 bit Kernel"
ath9k: fix using sta->drv_priv before initializing it
md-cluster: make md-cluster also can work when compiled into kernel
xhci: fix null pointer dereference in stop command timeout function
fuse: direct-io: don't dirty ITER_BVEC pages
Btrfs: remove root_log_ctx from ctx list before btrfs_sync_log returns
crypto: cryptd - initialize child shash_desc on import
arm64: spinlocks: implement smp_mb__before_spinlock() as smp_mb()
pinctrl: sunxi: fix uart1 CTS/RTS pins at PG on A23/A33
pinctrl: pistachio: fix mfio pll_lock pinmux
dm crypt: fix error with too large bios
dm log writes: move IO accounting earlier to fix error path
dm log writes: fix check of kthread_run() return value
bus: arm-ccn: Fix XP watchpoint settings bitmask
bus: arm-ccn: Do not attempt to configure XPs for cycle counter
bus: arm-ccn: Fix PMU handling of MN
ARM: dts: STiH407-family: Provide interconnect clock for consumption in ST SDHCI
ARM: dts: overo: fix gpmc nand on boards with ethernet
ARM: dts: overo: fix gpmc nand cs0 range
ARM: dts: imx6qdl: Fix SPDIF regression
ARM: OMAP3: hwmod data: Add sysc information for DSI
ARM: kirkwood: ib62x0: fix size of u-boot environment partition
ARM: imx6: add missing BM_CLPCR_BYPASS_PMIC_READY setting for imx6sx
ARM: imx6: add missing BM_CLPCR_BYP_MMDC_CH0_LPM_HS setting for imx6ul
ARM: AM43XX: hwmod: Fix RSTST register offset for pruss
cpuset: make sure new tasks conform to the current config of the cpuset
net: thunderx: Fix OOPs with ethtool --register-dump
USB: change bInterval default to 10 ms
ARM: dts: STiH410: Handle interconnect clock required by EHCI/OHCI (USB)
usb: chipidea: udc: fix NULL ptr dereference in isr_setup_status_phase
usb: renesas_usbhs: fix clearing the {BRDY,BEMP}STS condition
USB: serial: simple: add support for another Infineon flashloader
serial: 8250: added acces i/o products quad and octal serial cards
serial: 8250_mid: fix divide error bug if baud rate is 0
iio: ensure ret is initialized to zero before entering do loop
iio:core: fix IIO_VAL_FRACTIONAL sign handling
iio: accel: kxsd9: Fix scaling bug
iio: fix pressure data output unit in hid-sensor-attributes
iio: accel: bmc150: reset chip at init time
iio: adc: at91: unbreak channel adc channel 3
iio: ad799x: Fix buffered capture for ad7991/ad7995/ad7999
iio: adc: ti_am335x_adc: Increase timeout value waiting for ADC sample
iio: adc: ti_am335x_adc: Protect FIFO1 from concurrent access
iio: adc: rockchip_saradc: reset saradc controller before programming it
iio: proximity: as3935: set up buffer timestamps for non-zero values
iio: accel: kxsd9: Fix raw read return
kvm-arm: Unmap shadow pagetables properly
x86/AMD: Apply erratum 665 on machines without a BIOS fix
x86/paravirt: Do not trace _paravirt_ident_*() functions
ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS
IB/uverbs: Fix race between uverbs_close and remove_one
dm flakey: fix reads to be issued if drop_writes configured
audit: fix exe_file access in audit_exe_compare
mm: introduce get_task_exe_file
kexec: fix double-free when failing to relocate the purgatory
NFSv4.1: Fix the CREATE_SESSION slot number accounting
pNFS: Ensure LAYOUTGET and LAYOUTRETURN are properly serialised
nfsd: Close race between nfsd4_release_lockowner and nfsd4_lock
NFSv4.x: Fix a refcount leak in nfs_callback_up_net
pNFS: The client must not do I/O to the DS if it's lease has expired
kernfs: don't depend on d_find_any_alias() when generating notifications
powerpc/mm: Don't alias user region to other regions below PAGE_OFFSET
powerpc/powernv : Drop reference added by kset_find_obj()
powerpc/tm: do not use r13 for tabort_syscall
tipc: move linearization of buffers to generic code
lightnvm: put bio before return
fscrypto: require write access to mount to set encryption policy
Revert "KVM: x86: fix missed hardware breakpoints"
MIPS: KVM: Check for pfn noslot case
clocksource/drivers/sun4i: Clear interrupts after stopping timer in probe function
fscrypto: add authorization check for setting encryption policy
ext4: use __GFP_NOFAIL in ext4_free_blocks()
Conflicts:
arch/arm/kernel/devtree.c
arch/arm64/Kconfig
arch/arm64/kernel/arm64ksyms.c
arch/arm64/kernel/psci.c
arch/arm64/mm/fault.c
drivers/android/binder.c
drivers/usb/host/xhci-hub.c
fs/ext4/readpage.c
include/linux/mmc/core.h
include/linux/mmzone.h
mm/memcontrol.c
net/core/filter.c
net/netlink/af_netlink.c
net/netlink/af_netlink.h
Change-Id: I99fe7a0914e83e284b11b33185b71448a8999d1f
Signed-off-by: Runmin Wang <runminw@codeaurora.org>
Signed-off-by: Blagovest Kolenichev <bkolenichev@codeaurora.org>
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commit 3ddf40e8c31964b744ff10abb48c8e36a83ec6e7 upstream.
Commit 22f2ac51b6d6 ("mm: workingset: fix crash in shadow node shrinker
caused by replace_page_cache_page()") switched replace_page_cache() from
raw radix tree operations to page_cache_tree_insert() but didn't take
into account that the latter function, unlike the raw radix tree op,
handles mapping->nrpages. As a result, that counter is bumped for each
page replacement rather than balanced out even.
The mapping->nrpages counter is used to skip needless radix tree walks
when invalidating, truncating, syncing inodes without pages, as well as
statistics for userspace. Since the error is positive, we'll do more
page cache tree walks than necessary; we won't miss a necessary one.
And we'll report more buffer pages to userspace than there are. The
error is limited to fuse inodes.
Fixes: 22f2ac51b6d6 ("mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Miklos Szeredi <miklos@szeredi.hu>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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replace_page_cache_page()
commit 22f2ac51b6d643666f4db093f13144f773ff3f3a upstream.
Antonio reports the following crash when using fuse under memory pressure:
kernel BUG at /build/linux-a2WvEb/linux-4.4.0/mm/workingset.c:346!
invalid opcode: 0000 [#1] SMP
Modules linked in: all of them
CPU: 2 PID: 63 Comm: kswapd0 Not tainted 4.4.0-36-generic #55-Ubuntu
Hardware name: System manufacturer System Product Name/P8H67-M PRO, BIOS 3904 04/27/2013
task: ffff88040cae6040 ti: ffff880407488000 task.ti: ffff880407488000
RIP: shadow_lru_isolate+0x181/0x190
Call Trace:
__list_lru_walk_one.isra.3+0x8f/0x130
list_lru_walk_one+0x23/0x30
scan_shadow_nodes+0x34/0x50
shrink_slab.part.40+0x1ed/0x3d0
shrink_zone+0x2ca/0x2e0
kswapd+0x51e/0x990
kthread+0xd8/0xf0
ret_from_fork+0x3f/0x70
which corresponds to the following sanity check in the shadow node
tracking:
BUG_ON(node->count & RADIX_TREE_COUNT_MASK);
The workingset code tracks radix tree nodes that exclusively contain
shadow entries of evicted pages in them, and this (somewhat obscure)
line checks whether there are real pages left that would interfere with
reclaim of the radix tree node under memory pressure.
While discussing ways how fuse might sneak pages into the radix tree
past the workingset code, Miklos pointed to replace_page_cache_page(),
and indeed there is a problem there: it properly accounts for the old
page being removed - __delete_from_page_cache() does that - but then
does a raw raw radix_tree_insert(), not accounting for the replacement
page. Eventually the page count bits in node->count underflow while
leaving the node incorrectly linked to the shadow node LRU.
To address this, make sure replace_page_cache_page() uses the tracked
page insertion code, page_cache_tree_insert(). This fixes the page
accounting and makes sure page-containing nodes are properly unlinked
from the shadow node LRU again.
Also, make the sanity checks a bit less obscure by using the helpers for
checking the number of pages and shadows in a radix tree node.
[mhocko@suse.com: backport for 4.4]
Fixes: 449dd6984d0e ("mm: keep page cache radix tree nodes in check")
Link: http://lkml.kernel.org/r/20160919155822.29498-1-hannes@cmpxchg.org
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Antonio SJ Musumeci <trapexit@spawn.link>
Debugged-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit d3798ae8c6f3767c726403c2ca6ecc317752c9dd upstream.
When the underflow checks were added to workingset_node_shadow_dec(),
they triggered immediately:
kernel BUG at ./include/linux/swap.h:276!
invalid opcode: 0000 [#1] SMP
Modules linked in: isofs usb_storage fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_REJECT nf_reject_ipv6
soundcore wmi acpi_als pinctrl_sunrisepoint kfifo_buf tpm_tis industrialio acpi_pad pinctrl_intel tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_crypt
CPU: 0 PID: 20929 Comm: blkid Not tainted 4.8.0-rc8-00087-gbe67d60ba944 #1
Hardware name: System manufacturer System Product Name/Z170-K, BIOS 1803 05/06/2016
task: ffff8faa93ecd940 task.stack: ffff8faa7f478000
RIP: page_cache_tree_insert+0xf1/0x100
Call Trace:
__add_to_page_cache_locked+0x12e/0x270
add_to_page_cache_lru+0x4e/0xe0
mpage_readpages+0x112/0x1d0
blkdev_readpages+0x1d/0x20
__do_page_cache_readahead+0x1ad/0x290
force_page_cache_readahead+0xaa/0x100
page_cache_sync_readahead+0x3f/0x50
generic_file_read_iter+0x5af/0x740
blkdev_read_iter+0x35/0x40
__vfs_read+0xe1/0x130
vfs_read+0x96/0x130
SyS_read+0x55/0xc0
entry_SYSCALL_64_fastpath+0x13/0x8f
Code: 03 00 48 8b 5d d8 65 48 33 1c 25 28 00 00 00 44 89 e8 75 19 48 83 c4 18 5b 41 5c 41 5d 41 5e 5d c3 0f 0b 41 bd ef ff ff ff eb d7 <0f> 0b e8 88 68 ef ff 0f 1f 84 00
RIP page_cache_tree_insert+0xf1/0x100
This is a long-standing bug in the way shadow entries are accounted in
the radix tree nodes. The shrinker needs to know when radix tree nodes
contain only shadow entries, no pages, so node->count is split in half
to count shadows in the upper bits and pages in the lower bits.
Unfortunately, the radix tree implementation doesn't know of this and
assumes all entries are in node->count. When there is a shadow entry
directly in root->rnode and the tree is later extended, the radix tree
implementation will copy that entry into the new node and and bump its
node->count, i.e. increases the page count bits. Once the shadow gets
removed and we subtract from the upper counter, node->count underflows
and triggers the warning. Afterwards, without node->count reaching 0
again, the radix tree node is leaked.
Limit shadow entries to when we have actual radix tree nodes and can
count them properly. That means we lose the ability to detect refaults
from files that had only the first page faulted in at eviction time.
Fixes: 449dd6984d0e ("mm: keep page cache radix tree nodes in check")
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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vmstat events currently count pgpgout, but that includes
only the writebacks, and not the reclaim of clean
pages. Add an event to count clean page evictions. This is
helpful to evaluate page thrashing cases.
Change-Id: Icfb797877a544a58c289074bdc290dfbc1384514
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
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There are many places which use mapping_gfp_mask to restrict a more
generic gfp mask which would be used for allocations which are not
directly related to the page cache but they are performed in the same
context.
Let's introduce a helper function which makes the restriction explicit and
easier to track. This patch doesn't introduce any functional changes.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Michal Hocko <mhocko@suse.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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__GFP_WAIT was used to signal that the caller was in atomic context and
could not sleep. Now it is possible to distinguish between true atomic
context and callers that are not willing to sleep. The latter should
clear __GFP_DIRECT_RECLAIM so kswapd will still wake. As clearing
__GFP_WAIT behaves differently, there is a risk that people will clear the
wrong flags. This patch renames __GFP_WAIT to __GFP_RECLAIM to clearly
indicate what it does -- setting it allows all reclaim activity, clearing
them prevents it.
[akpm@linux-foundation.org: fix build]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Christoph Lameter <cl@linux.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Vitaly Wool <vitalywool@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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After v4.3's commit 0610c25daa3e ("memcg: fix dirty page migration")
mem_cgroup_migrate() doesn't have much to offer in page migration: convert
migrate_misplaced_transhuge_page() to set_page_memcg() instead.
Then rename mem_cgroup_migrate() to mem_cgroup_replace_page(), since its
remaining callers are replace_page_cache_page() and shmem_replace_page():
both of whom passed lrucare true, so just eliminate that argument.
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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filemap_fdatawait() is a function to wait for on-going writeback to
complete but also consume and clear error status of the mapping set during
writeback.
The latter functionality is critical for applications to detect writeback
error with system calls like fsync(2)/fdatasync(2).
However filemap_fdatawait() is also used by sync(2) or FIFREEZE ioctl,
which don't check error status of individual mappings.
As a result, fsync() may not be able to detect writeback error if events
happen in the following order:
Application System admin
----------------------------------------------------------
write data on page cache
Run sync command
writeback completes with error
filemap_fdatawait() clears error
fsync returns success
(but the data is not on disk)
This patch adds filemap_fdatawait_keep_errors() for call sites where
writeback error is not handled so that they don't clear error status.
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Cc: Fengguang Wu <fengguang.wu@gmail.com>
Cc: Dave Chinner <david@fromorbit.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Maximal readahead size is limited now by two values:
1) by global 2Mb constant (MAX_READAHEAD in max_sane_readahead())
2) by configurable per-device value* (bdi->ra_pages)
There are devices, which require custom readahead limit.
For instance, for RAIDs it's calculated as number of devices
multiplied by chunk size times 2.
Readahead size can never be larger than bdi->ra_pages * 2 value
(POSIX_FADV_SEQUNTIAL doubles readahead size).
If so, why do we need two limits?
I suggest to completely remove this max_sane_readahead() stuff and
use per-device readahead limit everywhere.
Also, using right readahead size for RAID disks can significantly
increase i/o performance:
before:
dd if=/dev/md2 of=/dev/null bs=100M count=100
100+0 records in
100+0 records out
10485760000 bytes (10 GB) copied, 12.9741 s, 808 MB/s
after:
$ dd if=/dev/md2 of=/dev/null bs=100M count=100
100+0 records in
100+0 records out
10485760000 bytes (10 GB) copied, 8.91317 s, 1.2 GB/s
(It's an 8-disks RAID5 storage).
This patch doesn't change sys_readahead and madvise(MADV_WILLNEED)
behavior introduced by 6d2be915e589b58 ("mm/readahead.c: fix readahead
failure for memoryless NUMA nodes and limit readahead pages").
Signed-off-by: Roman Gushchin <klamm@yandex-team.ru>
Cc: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: onstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Currently a simple program below issues a sendfile(2) system call which
takes about 62 days to complete in my test KVM instance.
int fd;
off_t off = 0;
fd = open("file", O_RDWR | O_TRUNC | O_SYNC | O_CREAT, 0644);
ftruncate(fd, 2);
lseek(fd, 0, SEEK_END);
sendfile(fd, fd, &off, 0xfffffff);
Now you should not ask kernel to do a stupid stuff like copying 256MB in
2-byte chunks and call fsync(2) after each chunk but if you do, sysadmin
should have a way to stop you.
We actually do have a check for fatal_signal_pending() in
generic_perform_write() which triggers in this path however because we
always succeed in writing something before the check is done, we return
value > 0 from generic_perform_write() and thus the information about
signal gets lost.
Fix the problem by doing the signal check before writing anything. That
way generic_perform_write() returns -EINTR, the error gets propagated up
and the sendfile loop terminates early.
Signed-off-by: Jan Kara <jack@suse.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This reverts commit 998ef75ddb5709bbea0bf1506cd2717348a3c647.
The commit itself does not appear to be buggy per se, but it is exposing
a bug in ext4 (and Ted thinks ext3 too, but we solved that by getting
rid of it). It's too late in the release cycle to really worry about
this, even if Dave Hansen has a patch that may actually fix the
underlying ext4 problem. We can (and should) revisit this for the next
release.
The problem is that moving the prefaulting later now exposes a special
case with partially successful writes that isn't handled correctly. And
the prefaulting likely isn't normally even that much of a performance
issue - it looks like at least one reason Dave saw this in his
performance tests is that he also ran them on Skylake that now supports
the new SMAP code, which makes the normally very cheap user space
prefaulting noticeably more expensive.
Bisected-and-acked-by: Ted Ts'o <tytso@mit.edu>
Analyzed-and-acked-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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alloc_pages_exact_node() was introduced in commit 6484eb3e2a81 ("page
allocator: do not check NUMA node ID when the caller knows the node is
valid") as an optimized variant of alloc_pages_node(), that doesn't
fallback to current node for nid == NUMA_NO_NODE. Unfortunately the
name of the function can easily suggest that the allocation is
restricted to the given node and fails otherwise. In truth, the node is
only preferred, unless __GFP_THISNODE is passed among the gfp flags.
The misleading name has lead to mistakes in the past, see for example
commits 5265047ac301 ("mm, thp: really limit transparent hugepage
allocation to local node") and b360edb43f8e ("mm, mempolicy:
migrate_to_node should only migrate to node").
Another issue with the name is that there's a family of
alloc_pages_exact*() functions where 'exact' means exact size (instead
of page order), which leads to more confusion.
To prevent further mistakes, this patch effectively renames
alloc_pages_exact_node() to __alloc_pages_node() to better convey that
it's an optimized variant of alloc_pages_node() not intended for general
usage. Both functions get described in comments.
It has been also considered to really provide a convenience function for
allocations restricted to a node, but the major opinion seems to be that
__GFP_THISNODE already provides that functionality and we shouldn't
duplicate the API needlessly. The number of users would be small
anyway.
Existing callers of alloc_pages_exact_node() are simply converted to
call __alloc_pages_node(), with the exception of sba_alloc_coherent()
which open-codes the check for NUMA_NO_NODE, so it is converted to use
alloc_pages_node() instead. This means it no longer performs some
VM_BUG_ON checks, and since the current check for nid in
alloc_pages_node() uses a 'nid < 0' comparison (which includes
NUMA_NO_NODE), it may hide wrong values which would be previously
exposed.
Both differences will be rectified by the next patch.
To sum up, this patch makes no functional changes, except temporarily
hiding potentially buggy callers. Restricting the checks in
alloc_pages_node() is left for the next patch which can in turn expose
more existing buggy callers.
Signed-off-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Robin Holt <robinmholt@gmail.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Christoph Lameter <cl@linux.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mel Gorman <mgorman@suse.de>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Cliff Whickman <cpw@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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=== Short summary ====
iov_iter_fault_in_readable() works around a really rare case and we can
avoid the deadlock it addresses in another way: disable page faults and
work around copy failures by faulting after the copy in a slow path
instead of before in a hot one.
I have a little microbenchmark that does repeated, small writes to tmpfs.
This patch speeds that micro up by 6.2%.
=== Long version ===
When doing a sys_write() we have a source buffer in userspace and then a
target file page.
If both of those are the same physical page, there is a potential deadlock
that we avoid. It would happen something like this:
1. We start the write to the file
2. Allocate page cache page and set it !Uptodate
3. Touch the userspace buffer to copy in the user data
4. Page fault (since source of the write not yet mapped)
5. Page fault code tries to lock the page and deadlocks
(more details on this below)
To avoid this, we prefault the page to guarantee that this fault does not
occur. But, this prefault comes at a cost. It is one of the most
expensive things that we do in a hot write() path (especially if we
compare it to the read path). It is working around a pretty rare case.
To fix this, it's pretty simple. We move the "prefault" code to run after
we attempt the copy. We explicitly disable page faults _during_ the copy,
detect the copy failure, then execute the "prefault" ouside of where the
page lock needs to be held.
iov_iter_copy_from_user_atomic() actually already has an implicit
pagefault_disable() inside of it (at least on x86), but we add an explicit
one. I don't think we can depend on every kmap_atomic() implementation to
pagefault_disable() for eternity.
===================================================
The stack trace when this happens looks like this:
wait_on_page_bit_killable+0xc0/0xd0
__lock_page_or_retry+0x84/0xa0
filemap_fault+0x1ed/0x3d0
__do_fault+0x41/0xc0
handle_mm_fault+0x9bb/0x1210
__do_page_fault+0x17f/0x3d0
do_page_fault+0xc/0x10
page_fault+0x22/0x30
generic_perform_write+0xca/0x1a0
__generic_file_write_iter+0x190/0x1f0
ext4_file_write_iter+0xe9/0x460
__vfs_write+0xaa/0xe0
vfs_write+0xa6/0x1a0
SyS_write+0x46/0xa0
entry_SYSCALL_64_fastpath+0x12/0x6a
0xffffffffffffffff
(Note, this does *NOT* happen in practice today because
the kmap_atomic() does a pagefault_disable(). The trace
above was obtained by taking out the pagefault_disable().)
You can trigger the deadlock with this little code snippet:
fd = open("foo", O_RDWR);
fdmap = mmap(NULL, len, PROT_WRITE|PROT_READ, MAP_SHARED, fd, 0);
write(fd, &fdmap[0], 1);
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Jens Axboe <axboe@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: NeilBrown <neilb@suse.de>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Paul Cassella <cassella@cray.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull more vfs updates from Al Viro:
"Assorted VFS fixes and related cleanups (IMO the most interesting in
that part are f_path-related things and Eric's descriptor-related
stuff). UFS regression fixes (it got broken last cycle). 9P fixes.
fs-cache series, DAX patches, Jan's file_remove_suid() work"
[ I'd say this is much more than "fixes and related cleanups". The
file_table locking rule change by Eric Dumazet is a rather big and
fundamental update even if the patch isn't huge. - Linus ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (49 commits)
9p: cope with bogus responses from server in p9_client_{read,write}
p9_client_write(): avoid double p9_free_req()
9p: forgetting to cancel request on interrupted zero-copy RPC
dax: bdev_direct_access() may sleep
block: Add support for DAX reads/writes to block devices
dax: Use copy_from_iter_nocache
dax: Add block size note to documentation
fs/file.c: __fget() and dup2() atomicity rules
fs/file.c: don't acquire files->file_lock in fd_install()
fs:super:get_anon_bdev: fix race condition could cause dev exceed its upper limitation
vfs: avoid creation of inode number 0 in get_next_ino
namei: make set_root_rcu() return void
make simple_positive() public
ufs: use dir_pages instead of ufs_dir_pages()
pagemap.h: move dir_pages() over there
remove the pointless include of lglock.h
fs: cleanup slight list_entry abuse
xfs: Correctly lock inode when removing suid and file capabilities
fs: Call security_ops->inode_killpriv on truncate
fs: Provide function telling whether file_remove_privs() will do anything
...
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file_remove_suid() is a misnomer since it removes also file capabilities
stored in xattrs and sets S_NOSEC flag. Also should_remove_suid() tells
something else than whether file_remove_suid() call is necessary which
leads to bugs.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Pull cgroup writeback support from Jens Axboe:
"This is the big pull request for adding cgroup writeback support.
This code has been in development for a long time, and it has been
simmering in for-next for a good chunk of this cycle too. This is one
of those problems that has been talked about for at least half a
decade, finally there's a solution and code to go with it.
Also see last weeks writeup on LWN:
http://lwn.net/Articles/648292/"
* 'for-4.2/writeback' of git://git.kernel.dk/linux-block: (85 commits)
writeback, blkio: add documentation for cgroup writeback support
vfs, writeback: replace FS_CGROUP_WRITEBACK with SB_I_CGROUPWB
writeback: do foreign inode detection iff cgroup writeback is enabled
v9fs: fix error handling in v9fs_session_init()
bdi: fix wrong error return value in cgwb_create()
buffer: remove unusued 'ret' variable
writeback: disassociate inodes from dying bdi_writebacks
writeback: implement foreign cgroup inode bdi_writeback switching
writeback: add lockdep annotation to inode_to_wb()
writeback: use unlocked_inode_to_wb transaction in inode_congested()
writeback: implement unlocked_inode_to_wb transaction and use it for stat updates
writeback: implement [locked_]inode_to_wb_and_lock_list()
writeback: implement foreign cgroup inode detection
writeback: make writeback_control track the inode being written back
writeback: relocate wb[_try]_get(), wb_put(), inode_{attach|detach}_wb()
mm: vmscan: disable memcg direct reclaim stalling if cgroup writeback support is in use
writeback: implement memcg writeback domain based throttling
writeback: reset wb_domain->dirty_limit[_tstmp] when memcg domain size changes
writeback: implement memcg wb_domain
writeback: update wb_over_bg_thresh() to use wb_domain aware operations
...
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updates
The mechanism for detecting whether an inode should switch its wb
(bdi_writeback) association is now in place. This patch build the
framework for the actual switching.
This patch adds a new inode flag I_WB_SWITCHING, which has two
functions. First, the easy one, it ensures that there's only one
switching in progress for a give inode. Second, it's used as a
mechanism to synchronize wb stat updates.
The two stats, WB_RECLAIMABLE and WB_WRITEBACK, aren't event counters
but track the current number of dirty pages and pages under writeback
respectively. As such, when an inode is moved from one wb to another,
the inode's portion of those stats have to be transferred together;
unfortunately, this is a bit tricky as those stat updates are percpu
operations which are performed without holding any lock in some
places.
This patch solves the problem in a similar way as memcg. Each such
lockless stat updates are wrapped in transaction surrounded by
unlocked_inode_to_wb_begin/end(). During normal operation, they map
to rcu_read_lock/unlock(); however, if I_WB_SWITCHING is asserted,
mapping->tree_lock is grabbed across the transaction.
In turn, the switching path sets I_WB_SWITCHING and waits for a RCU
grace period to pass before actually starting to switch, which
guarantees that all stat update paths are synchronizing against
mapping->tree_lock.
This patch still doesn't implement the actual switching.
v3: Updated on top of the recent cancel_dirty_page() updates.
unlocked_inode_to_wb_begin() now nests inside
mem_cgroup_begin_page_stat() to match the locking order.
v2: The i_wb access transaction will be used for !stat accesses too.
Function names and comments updated accordingly.
s/inode_wb_stat_unlocked_{begin|end}/unlocked_inode_to_wb_{begin|end}/
s/switch_wb/switch_wbs/
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Greg Thelen <gthelen@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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Currently, for cgroup writeback, the IO submission paths directly
associate the bio's with the blkcg from inode_to_wb_blkcg_css();
however, it'd be necessary to keep more writeback context to implement
foreign inode writeback detection. wbc (writeback_control) is the
natural fit for the extra context - it persists throughout the
writeback of each inode and is passed all the way down to IO
submission paths.
This patch adds wbc_attach_and_unlock_inode(), wbc_detach_inode(), and
wbc_attach_fdatawrite_inode() which are used to associate wbc with the
inode being written back. IO submission paths now use wbc_init_bio()
instead of directly associating bio's with blkcg themselves. This
leaves inode_to_wb_blkcg_css() w/o any user. The function is removed.
wbc currently only tracks the associated wb (bdi_writeback). Future
patches will add more for foreign inode detection. The association is
established under i_lock which will be depended upon when migrating
foreign inodes to other wb's.
As currently, once established, inode to wb association never changes,
going through wbc when initializing bio's doesn't cause any behavior
changes.
v2: submit_blk_blkcg() now checks whether the wbc is associated with a
wb before dereferencing it. This can happen when pageout() is
writing pages directly without going through the usual writeback
path. As pageout() path is single-threaded, we don't want it to
be blocked behind a slow cgroup and ultimately want it to delegate
actual writing to the usual writeback path.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Jan Kara <jack@suse.cz>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Greg Thelen <gthelen@google.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
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When modifying PG_Dirty on cached file pages, update the new
MEM_CGROUP_STAT_DIRTY counter. This is done in the same places where
global NR_FILE_DIRTY is managed. The new memcg stat is visible in the
per memcg memory.stat cgroupfs file. The most recent past attempt at
this was http://thread.gmane.org/gmane.linux.kernel.cgroups/8632
The new accounting supports future efforts to add per cgroup dirty
page throttling and writeback. It also helps an administrator break
down a container's memory usage and provides evidence to understand
memcg oom kills (the new dirty count is included in memcg oom kill
messages).
The ability to move page accounting between memcg
(memory.move_charge_at_immigrate) makes this accounting more
complicated than the global counter. The existing
mem_cgroup_{begin,end}_page_stat() lock is used to serialize move
accounting with stat updates.
Typical update operation:
memcg = mem_cgroup_begin_page_stat(page)
if (TestSetPageDirty()) {
[...]
mem_cgroup_update_page_stat(memcg)
}
mem_cgroup_end_page_stat(memcg)
Summary of mem_cgroup_end_page_stat() overhead:
- Without CONFIG_MEMCG it's a no-op
- With CONFIG_MEMCG and no inter memcg task movement, it's just
rcu_read_lock()
- With CONFIG_MEMCG and inter memcg task movement, it's
rcu_read_lock() + spin_lock_irqsave()
A memcg parameter is added to several routines because their callers
now grab mem_cgroup_begin_page_stat() which returns the memcg later
needed by for mem_cgroup_update_page_stat().
Because mem_cgroup_begin_page_stat() may disable interrupts, some
adjustments are needed:
- move __mark_inode_dirty() from __set_page_dirty() to its caller.
__mark_inode_dirty() locking does not want interrupts disabled.
- use spin_lock_irqsave(tree_lock) rather than spin_lock_irq() in
__delete_from_page_cache(), replace_page_cache_page(),
invalidate_complete_page2(), and __remove_mapping().
text data bss dec hex filename
8925147 1774832 1785856 12485835 be84cb vmlinux-!CONFIG_MEMCG-before
8925339 1774832 1785856 12486027 be858b vmlinux-!CONFIG_MEMCG-after
+192 text bytes
8965977 1784992 1785856 12536825 bf4bf9 vmlinux-CONFIG_MEMCG-before
8966750 1784992 1785856 12537598 bf4efe vmlinux-CONFIG_MEMCG-after
+773 text bytes
Performance tests run on v4.0-rc1-36-g4f671fe2f952. Lower is better for
all metrics, they're all wall clock or cycle counts. The read and write
fault benchmarks just measure fault time, they do not include I/O time.
* CONFIG_MEMCG not set:
baseline patched
kbuild 1m25.030000(+-0.088% 3 samples) 1m25.426667(+-0.120% 3 samples)
dd write 100 MiB 0.859211561 +-15.10% 0.874162885 +-15.03%
dd write 200 MiB 1.670653105 +-17.87% 1.669384764 +-11.99%
dd write 1000 MiB 8.434691190 +-14.15% 8.474733215 +-14.77%
read fault cycles 254.0(+-0.000% 10 samples) 253.0(+-0.000% 10 samples)
write fault cycles 2021.2(+-3.070% 10 samples) 1984.5(+-1.036% 10 samples)
* CONFIG_MEMCG=y root_memcg:
baseline patched
kbuild 1m25.716667(+-0.105% 3 samples) 1m25.686667(+-0.153% 3 samples)
dd write 100 MiB 0.855650830 +-14.90% 0.887557919 +-14.90%
dd write 200 MiB 1.688322953 +-12.72% 1.667682724 +-13.33%
dd write 1000 MiB 8.418601605 +-14.30% 8.673532299 +-15.00%
read fault cycles 266.0(+-0.000% 10 samples) 266.0(+-0.000% 10 samples)
write fault cycles 2051.7(+-1.349% 10 samples) 2049.6(+-1.686% 10 samples)
* CONFIG_MEMCG=y non-root_memcg:
baseline patched
kbuild 1m26.120000(+-0.273% 3 samples) 1m25.763333(+-0.127% 3 samples)
dd write 100 MiB 0.861723964 +-15.25% 0.818129350 +-14.82%
dd write 200 MiB 1.669887569 +-13.30% 1.698645885 +-13.27%
dd write 1000 MiB 8.383191730 +-14.65% 8.351742280 +-14.52%
read fault cycles 265.7(+-0.172% 10 samples) 267.0(+-0.000% 10 samples)
write fault cycles 2070.6(+-1.512% 10 samples) 2084.4(+-2.148% 10 samples)
As expected anon page faults are not affected by this patch.
tj: Updated to apply on top of the recent cancel_dirty_page() changes.
Signed-off-by: Sha Zhengju <handai.szj@gmail.com>
Signed-off-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
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page_cache_read, do_generic_file_read, __generic_file_splice_read and
__ntfs_grab_cache_pages currently ignore mapping_gfp_mask when calling
add_to_page_cache_lru which might cause recursion into fs down in the
direct reclaim path if the mapping really relies on GFP_NOFS semantic.
This doesn't seem to be the case now because page_cache_read (page fault
path) doesn't seem to suffer from the reclaim recursion issues and
do_generic_file_read and __generic_file_splice_read also shouldn't be
called under fs locks which would deadlock in the reclaim path. Anyway it
is better to obey mapping gfp mask and prevent from later breakage.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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hugetlb pages uses add_to_page_cache to track shared mappings. This is
OK from the data structure point of view but it is less so from the
NR_FILE_PAGES accounting:
- huge pages are accounted as 4k which is clearly wrong
- this counter is used as the amount of the reclaimable page
cache which is incorrect as well because hugetlb pages are
special and not reclaimable
- the counter is then exported to userspace via /proc/meminfo
(in Cached:), /proc/vmstat and /proc/zoneinfo as
nr_file_pages which is confusing at least:
Cached: 8883504 kB
HugePages_Free: 8348
...
Cached: 8916048 kB
HugePages_Free: 156
...
thats 8192 huge pages allocated which is ~16G accounted as 32M
There are usually not that many huge pages in the system for this to
make any visible difference e.g. by fooling __vm_enough_memory or
zone_pagecache_reclaimable.
Fix this by special casing huge pages in both __delete_from_page_cache
and __add_to_page_cache_locked. replace_page_cache_page is currently
only used by fuse and that shouldn't touch hugetlb pages AFAICS but it
is more robust to check for special casing there as well.
Hugetlb pages shouldn't get to any other paths where we do accounting:
- migration - we have a special handling via
hugetlbfs_migrate_page
- shmem - doesn't handle hugetlb pages directly even for
SHM_HUGETLB resp. MAP_HUGETLB
- swapcache - hugetlb is not swapable
This has a user visible effect but I believe it is reasonable because the
previously exported number is simply bogus.
An alternative would be to account hugetlb pages with their real size and
treat them similar to shmem. But this has some drawbacks.
First we would have to special case in kernel users of NR_FILE_PAGES and
considering how hugetlb is special we would have to do it everywhere. We
do not want Cached exported by /proc/meminfo to include it because the
value would be even more misleading.
__vm_enough_memory and zone_pagecache_reclaimable would have to do the
same thing because those pages are simply not reclaimable. The correction
is even not trivial because we would have to consider all active hugetlb
page sizes properly. Users of the counter outside of the kernel would
have to do the same.
So the question is why to account something that needs to be basically
excluded for each reasonable usage. This doesn't make much sense to me.
It seems that this has been broken since hugetlb was introduced but I
haven't checked the whole history.
[akpm@linux-foundation.org: tweak comments]
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Acked-by: Mel Gorman <mgorman@suse.de>
Tested-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull third hunk of vfs changes from Al Viro:
"This contains the ->direct_IO() changes from Omar + saner
generic_write_checks() + dealing with fcntl()/{read,write}() races
(mirroring O_APPEND/O_DIRECT into iocb->ki_flags and instead of
repeatedly looking at ->f_flags, which can be changed by fcntl(2),
check ->ki_flags - which cannot) + infrastructure bits for dhowells'
d_inode annotations + Christophs switch of /dev/loop to
vfs_iter_write()"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (30 commits)
block: loop: switch to VFS ITER_BVEC
configfs: Fix inconsistent use of file_inode() vs file->f_path.dentry->d_inode
VFS: Make pathwalk use d_is_reg() rather than S_ISREG()
VFS: Fix up debugfs to use d_is_dir() in place of S_ISDIR()
VFS: Combine inode checks with d_is_negative() and d_is_positive() in pathwalk
NFS: Don't use d_inode as a variable name
VFS: Impose ordering on accesses of d_inode and d_flags
VFS: Add owner-filesystem positive/negative dentry checks
nfs: generic_write_checks() shouldn't be done on swapout...
ocfs2: use __generic_file_write_iter()
mirror O_APPEND and O_DIRECT into iocb->ki_flags
switch generic_write_checks() to iocb and iter
ocfs2: move generic_write_checks() before the alignment checks
ocfs2_file_write_iter: stop messing with ppos
udf_file_write_iter: reorder and simplify
fuse: ->direct_IO() doesn't need generic_write_checks()
ext4_file_write_iter: move generic_write_checks() up
xfs_file_aio_write_checks: switch to iocb/iov_iter
generic_write_checks(): drop isblk argument
blkdev_write_iter: expand generic_file_checks() call in there
...
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... avoiding write_iter/fcntl races.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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... returning -E... upon error and amount of data left in iter after
(possible) truncation upon success. Note, that normal case gives
a non-zero (positive) return value, so any tests for != 0 _must_ be
updated.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Conflicts:
fs/ext4/file.c
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all remaining callers are passing 0; some just obscure that fact.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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A side effect worth noting: in O_APPEND case we set ->ki_pos early,
so if it turns out to be an error or a zero-length write, we'll
end up with ->ki_pos modified. Safe, since all callers never
look at the ->ki_pos after the call of __generic_file_write_iter()
returning non-positive, all the way to caller of ->write_iter() and
those discard ->ki_pos when getting that.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Now that no one is using rw, remove it completely.
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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