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Walking a bio's page mappings has proved problematic, so create a new
bio flag to indicate that a bio's data needs to be snapshotted in order
to guarantee stable pages during writeback. Next, for the one user
(ext3/jbd) of snapshotting, hook all the places where writes can be
initiated without PG_writeback set, and set BIO_SNAP_STABLE there.
We must also flag journal "metadata" bios for stable writeout, since
file data can be written through the journal. Finally, the
MS_SNAP_STABLE mount flag (only used by ext3) is now superfluous, so get
rid of it.
[akpm@linux-foundation.org: rename _submit_bh()'s `flags' to `bio_flags', delobotomize the _submit_bh declaration]
[akpm@linux-foundation.org: teeny cleanup]
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
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/gregkh/usb
Pull USB patches from Greg Kroah-Hartman:
"Here's the big USB pull request for 3.10-rc1.
Lots of USB patches here, the majority being USB gadget changes and
USB-serial driver cleanups, the rest being ARM build fixes / cleanups,
and individual driver updates. We also finally got some chipidea
fixes, which have been delayed for a number of kernel releases, as the
maintainer has now reappeared.
All of these have been in linux-next for a while"
* tag 'usb-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (568 commits)
USB: ehci-msm: USB_MSM_OTG needs USB_PHY
USB: OHCI: avoid conflicting platform drivers
USB: OMAP: ISP1301 needs USB_PHY
USB: lpc32xx: ISP1301 needs USB_PHY
USB: ftdi_sio: enable two UART ports on ST Microconnect Lite
usb: phy: tegra: don't call into tegra-ehci directly
usb: phy: phy core cannot yet be a module
USB: Fix initconst in ehci driver
usb-storage: CY7C68300A chips do not support Cypress ATACB
USB: serial: option: Added support Olivetti Olicard 145
USB: ftdi_sio: correct ST Micro Connect Lite PIDs
ARM: mxs_defconfig: add CONFIG_USB_PHY
ARM: imx_v6_v7_defconfig: add CONFIG_USB_PHY
usb: phy: remove exported function from __init section
usb: gadget: zero: put function instances on unbind
usb: gadget: f_sourcesink.c: correct a copy-paste misnomer
usb: gadget: cdc2: fix error return code in cdc_do_config()
usb: gadget: multi: fix error return code in rndis_do_config()
usb: gadget: f_obex: fix error return code in obex_bind()
USB: storage: convert to use module_usb_driver()
...
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Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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We want the fixes here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Userspace applications need to know the maximum supported message
size.
The cdc-wdm driver translates between a character device stream
and a message based protocol. Each message is transported as a
usb control message with no further encapsulation or syncronization.
Each read or write on the character device should translate to
exactly one usb control message to ensure that message boundaries
are kept intact. That means that the userspace application must
know the maximum message size supported by the device and driver,
making this size a vital part of the cdc-wdm character device API.
CDC WDM and CDC MBIM functions export the maximum supported
message size through CDC functional descriptors. The cdc-wdm and
cdc_mbim drivers will parse these descriptors and use the value
chosen by the device. The only current way for a userspace
application to retrive the value is by duplicating the descriptor
parsing. This is an unnecessary complex task, and application
writers are likely to postpone it, using a fixed value and adding
a "todo" item.
QMI functions have no way to tell the host what message size they
support. The qmi_wwan driver use a fixed value based on protocol
recommendations and observed device behaviour. Userspace
applications must know and hard code the same value. This scheme
will break if we ever encounter a QMI device needing a device
specific message size quirk. We are currently unable to support
such a device because using a non default size would break the
implicit userspace API.
The message size is currently a hidden attribute of the cdc-wdm
userspace API. Retrieving it is unnecessarily complex, increasing
the possibility of drivers and applications using different limits.
The resulting errors are hard to debug, and can only be replicated
on identical hardware.
Exporting the maximum message size from the driver simplifies the
task for the userspace application, and creates a unified
information source independent of device and function class. It also
serves to document that the message size is part of the cdc-wdm
userspace API.
This proposed API extension has been presented for the authors of
userspace applications and libraries using the current API: libmbim,
libqmi, uqmi, oFono and ModemManager. The replies were:
Aleksander Morgado:
"We do really need max message size for MBIM; and as you say, it may be
good to have the max message size info also for QMI, so the new ioctl
seems a good addition. So +1 from my side, for what it's worth."
Dan Williams:
"Yeah, +1 here. I'd prefer the sysfs file, but the fact that that
doesn't work for fd passing pretty much kills it."
No negative replies are so far received.
Cc: Aleksander Morgado <aleksander@lanedo.com>
Cc: Dan Williams <dcbw@redhat.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Acked-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver update from Greg Kroah-Hartman:
"Here's the big char / misc driver update for 3.10-rc1
A number of various driver updates, the majority being new
functionality in the MEI driver subsystem (it's now a subsystem, it
started out just a single driver), extcon updates, memory updates,
hyper-v updates, and a bunch of other small stuff that doesn't fit in
any other tree.
All of these have been in linux-next for a while"
* tag 'char-misc-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (148 commits)
Tools: hv: Fix a checkpatch warning
tools: hv: skip iso9660 mounts in hv_vss_daemon
tools: hv: use FIFREEZE/FITHAW in hv_vss_daemon
tools: hv: use getmntent in hv_vss_daemon
Tools: hv: Fix a checkpatch warning
tools: hv: fix checks for origin of netlink message in hv_vss_daemon
Tools: hv: fix warnings in hv_vss_daemon
misc: mark spear13xx-pcie-gadget as broken
mei: fix krealloc() misuse in in mei_cl_irq_read_msg()
mei: reduce flow control only for completed messages
mei: reseting -> resetting
mei: fix reading large reposnes
mei: revamp mei_irq_read_client_message function
mei: revamp mei_amthif_irq_read_message
mei: revamp hbm state machine
Revert "drivers/scsi: use module_pcmcia_driver() in pcmcia drivers"
Revert "scsi: pcmcia: nsp_cs: remove module init/exit function prototypes"
scsi: pcmcia: nsp_cs: remove module init/exit function prototypes
mei: wd: fix line over 80 characters
misc: tsl2550: Use dev_pm_ops
...
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This picks up the fixes in 3.9-rc5 that we need here.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc into char-misc-next
Mark writes:
ASoC/extcon: arizona: Fix interaction between HPDET and headphone outputs
This patch series covers both ASoC and extcon subsystems and fixes an
interaction between the HPDET function and the headphone outputs - we
really shouldn't run HPDET while the headphone is active. The first
patch is a refactoring to make the extcon side easier.
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This driver supports host initiated backup of the guest. On Windows guests,
the host can generate application consistent backups using the Windows VSS
framework. On Linux, we ensure that the backup will be file system consistent.
This driver allows the host to initiate a "Freeze" operation on all the mounted
file systems in the guest. Once the mounted file systems in the guest are frozen,
the host snapshots the guest's file systems. Once this is done, the guest's file
systems are "thawed".
This driver has a user-level component (daemon) that invokes the appropriate
operation on all the mounted file systems in response to the requests from
the host. The duration for which the guest is frozen is very short - a few seconds.
During this interval, the diff disk is comitted.
In this version of the patch I have addressed the feedback from Olaf Herring.
Also, some of the connector related issues have been fixed.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI updates from Bjorn Helgaas:
"PCI changes for the v3.10 merge window:
PCI device hotplug
- Remove ACPI PCI subdrivers (Jiang Liu, Myron Stowe)
- Make acpiphp builtin only, not modular (Jiang Liu)
- Add acpiphp mutual exclusion (Jiang Liu)
Power management
- Skip "PME enabled/disabled" messages when not supported (Rafael
Wysocki)
- Fix fallback to PCI_D0 (Rafael Wysocki)
Miscellaneous
- Factor quirk_io_region (Yinghai Lu)
- Cache MSI capability offsets & cleanup (Gavin Shan, Bjorn Helgaas)
- Clean up EISA resource initialization and logging (Bjorn Helgaas)
- Fix prototype warnings (Andy Shevchenko, Bjorn Helgaas)
- MIPS: Initialize of_node before scanning bus (Gabor Juhos)
- Fix pcibios_get_phb_of_node() declaration "weak" annotation (Gabor
Juhos)
- Add MSI INTX_DISABLE quirks for AR8161/AR8162/etc (Xiong Huang)
- Fix aer_inject return values (Prarit Bhargava)
- Remove PME/ACPI dependency (Andrew Murray)
- Use shared PCI_BUS_NUM() and PCI_DEVID() (Shuah Khan)"
* tag 'pci-v3.10-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (63 commits)
vfio-pci: Use cached MSI/MSI-X capabilities
vfio-pci: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK
PCI: Remove "extern" from function declarations
PCI: Use PCI_MSIX_TABLE_BIR, not PCI_MSIX_FLAGS_BIRMASK
PCI: Drop msi_mask_reg() and remove drivers/pci/msi.h
PCI: Use msix_table_size() directly, drop multi_msix_capable()
PCI: Drop msix_table_offset_reg() and msix_pba_offset_reg() macros
PCI: Drop is_64bit_address() and is_mask_bit_support() macros
PCI: Drop msi_data_reg() macro
PCI: Drop msi_lower_address_reg() and msi_upper_address_reg() macros
PCI: Drop msi_control_reg() macro and use PCI_MSI_FLAGS directly
PCI: Use cached MSI/MSI-X offsets from dev, not from msi_desc
PCI: Clean up MSI/MSI-X capability #defines
PCI: Use cached MSI-X cap while enabling MSI-X
PCI: Use cached MSI cap while enabling MSI interrupts
PCI: Remove MSI/MSI-X cap check in pci_msi_check_device()
PCI: Cache MSI/MSI-X capability offsets in struct pci_dev
PCI: Use u8, not int, for PM capability offset
[SCSI] megaraid_sas: Use correct #define for MSI-X capability
PCI: Remove "extern" from function declarations
...
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This doesn't change any existing symbols, but it puts them in logical
order and uses explicit masks instead of shifts, like the rest of the
file.
It also adds new symbols for PCI_MSIX_TABLE_BIR,
PCI_MSIX_TABLE_OFFSET, PCI_MSIX_PBA_BIR, and PCI_MSIX_PBA_OFFSET to
replace the mis-named PCI_MSIX_FLAGS_BIRMASK (the BAR index fields
are part of the Table and PBA registers, not the flags register).
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
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Commit 7e98d53086d18c877cb44e9065219335184024de (Synchronize fuse header with
one used in library) added #ifdef __linux__ around defines if it is not set.
The kernel build is self-contained and can be built on non-Linux toolchains.
After the mentioned commit builds on non-Linux toolchains will try to include
stdint.h and fail due to -nostdinc, and then fail with a bunch of undefined type
errors.
Fix by checking for __KERNEL__ instead of __linux__ and using the standard int
types instead of the linux specific ones.
Reported-by: Arve Hjønnevåg <arve@android.com>
Reported-by: Colin Cross <ccross@android.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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Follow the common pattern and define *_DIAG_MAX like:
[...]
__XXX_DIAG_MAX,
};
Because everyone is used to do:
struct nlattr *attrs[XXX_DIAG_MAX+1];
nla_parse([...], XXX_DIAG_MAX, [...]
Reported-by: Thomas Graf <tgraf@suug.ch>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Pavel Emelyanov <xemul@parallels.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge misc fixes from Andrew Morton:
- A bunch of fixes
- Finish off the idr API conversions before someone starts to use the
old interfaces again.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
idr: idr_alloc() shouldn't trigger lowmem warning when preloaded
UAPI: fix endianness conditionals in M32R's asm/stat.h
UAPI: fix endianness conditionals in linux/raid/md_p.h
UAPI: fix endianness conditionals in linux/acct.h
UAPI: fix endianness conditionals in linux/aio_abi.h
decompressors: fix typo "POWERPC"
mm/fremap.c: fix oops on error path
idr: deprecate idr_pre_get() and idr_get_new[_above]()
tidspbridge: convert to idr_alloc()
zcache: convert to idr_alloc()
mlx4: remove leftover idr_pre_get() call
workqueue: convert to idr_alloc()
nfsd: convert to idr_alloc()
nfsd: remove unused get_new_stid()
kernel/signal.c: use __ARCH_HAS_SA_RESTORER instead of SA_RESTORER
signal: always clear sa_restorer on execve
mm: remove_memory(): fix end_pfn setting
include/linux/res_counter.h needs errno.h
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In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be
compared against __BYTE_ORDER in preprocessor conditionals where these are
exposed to userspace (that is they're not inside __KERNEL__ conditionals).
However, in the main kernel the norm is to check for
"defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and
this has incorrectly leaked into the userspace headers.
The definition of struct mdp_superblock_s in linux/raid/md_p.h is wrong in
this way. Note that userspace will likely interpret the ordering of the
fields incorrectly as the big-endian variant on a little-endian machines -
depending on header inclusion order.
[!!!] NOTE [!!!] This patch may adversely change the userspace API. It might
be better to fix the ordering of events_hi, events_lo, cp_events_hi and
cp_events_lo in struct mdp_superblock_s / typedef mdp_super_t.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: NeilBrown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be
compared against __BYTE_ORDER in preprocessor conditionals where these are
exposed to userspace (that is they're not inside __KERNEL__ conditionals).
However, in the main kernel the norm is to check for
"defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and
this has incorrectly leaked into the userspace headers.
The definition of ACCT_BYTEORDER in linux/acct.h is wrong in this way.
Note that userspace will likely interpret this incorrectly as the
big-endian variant on little-endian machines - depending on header
inclusion order.
[!!!] NOTE [!!!] This patch may adversely change the userspace API. It might
be better to fix the value of ACCT_BYTEORDER.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In the UAPI header files, __BIG_ENDIAN and __LITTLE_ENDIAN must be
compared against __BYTE_ORDER in preprocessor conditionals where these are
exposed to userspace (that is they're not inside __KERNEL__ conditionals).
However, in the main kernel the norm is to check for
"defined(__XXX_ENDIAN)" rather than comparing against __BYTE_ORDER and
this has incorrectly leaked into the userspace headers.
The definition of PADDED() in linux/aio_abi.h is wrong in this way. Note
that userspace will likely interpret this and thus the order of fields in
struct iocb incorrectly as the little-endian variant on big-endian
machines - depending on header inclusion order.
[!!!] NOTE [!!!] This patch may adversely change the userspace API. It might
be better to fix the ordering of aio_key and aio_reserved1 in struct iocb.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Benjamin LaHaise <bcrl@kvack.org>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Add support for Altera 8250/16550 compatible serial port.
Signed-off-by: Ley Foon Tan <lftan@altera.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag
Pull new ImgTec Meta architecture from James Hogan:
"This adds core architecture support for Imagination's Meta processor
cores, followed by some later miscellaneous arch/metag cleanups and
fixes which I kept separate to ease review:
- Support for basic Meta 1 (ATP) and Meta 2 (HTP) core architecture
- A few fixes all over, particularly for symbol prefixes
- A few privilege protection fixes
- Several cleanups (setup.c includes, split out a lot of
metag_ksyms.c)
- Fix some missing exports
- Convert hugetlb to use vm_unmapped_area()
- Copy device tree to non-init memory
- Provide dma_get_sgtable()"
* tag 'metag-v3.9-rc1-v4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag: (61 commits)
metag: Provide dma_get_sgtable()
metag: prom.h: remove declaration of metag_dt_memblock_reserve()
metag: copy devicetree to non-init memory
metag: cleanup metag_ksyms.c includes
metag: move mm/init.c exports out of metag_ksyms.c
metag: move usercopy.c exports out of metag_ksyms.c
metag: move setup.c exports out of metag_ksyms.c
metag: move kick.c exports out of metag_ksyms.c
metag: move traps.c exports out of metag_ksyms.c
metag: move irq enable out of irqflags.h on SMP
genksyms: fix metag symbol prefix on crc symbols
metag: hugetlb: convert to vm_unmapped_area()
metag: export clear_page and copy_page
metag: export metag_code_cache_flush_all
metag: protect more non-MMU memory regions
metag: make TXPRIVEXT bits explicit
metag: kernel/setup.c: sort includes
perf: Enable building perf tools for Meta
metag: add boot time LNKGET/LNKSET check
metag: add __init to metag_cache_probe()
...
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The ptrace interface for metag provides access to some core register
sets using the PTRACE_GETREGSET and PTRACE_SETREGSET operations. The
details of the internal context structures is abstracted into user API
structures to both ease use and allow flexibility to change the internal
context layouts. Copyin and copyout functions for these register sets
are exposed to allow signal handling code to use them to copy to and
from the signal context.
struct user_gp_regs (NT_PRSTATUS) provides access to the core general
purpose register context.
struct user_cb_regs (NT_METAG_CBUF) provides access to the TXCATCH*
registers which contains information abuot a memory fault, unaligned
access error or watchpoint. This can be modified to alter the way the
fault is replayed on resume ("catch replay"), or to prevent the replay
taking place.
struct user_rp_state (NT_METAG_RPIPE) provides access to the state of
the Meta read pipeline which can be used to hide memory latencies in
hand optimised data loops.
Extended DSP register state, DSP RAM, and hardware breakpoint registers
aren't yet exposed through ptrace.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Tony Lindgren <tony@atomide.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs update from Chris Mason:
"The biggest feature in the pull is the new (and still experimental)
raid56 code that David Woodhouse started long ago. I'm still working
on the parity logging setup that will avoid inconsistent parity after
a crash, so this is only for testing right now. But, I'd really like
to get it out to a broader audience to hammer out any performance
issues or other problems.
scrub does not yet correct errors on raid5/6 either.
Josef has another pass at fsync performance. The big change here is
to combine waiting for metadata with waiting for data, which is a big
latency win. It is also step one toward using atomics from the
hardware during a commit.
Mark Fasheh has a new way to use btrfs send/receive to send only the
metadata changes. SUSE is using this to make snapper more efficient
at finding changes between snapshosts.
Snapshot-aware defrag is also included.
Otherwise we have a large number of fixes and cleanups. Eric Sandeen
wins the award for removing the most lines, and I'm hoping we steal
this idea from XFS over and over again."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (118 commits)
btrfs: fixup/remove module.h usage as required
Btrfs: delete inline extents when we find them during logging
btrfs: try harder to allocate raid56 stripe cache
Btrfs: cleanup to make the function btrfs_delalloc_reserve_metadata more logic
Btrfs: don't call btrfs_qgroup_free if just btrfs_qgroup_reserve fails
Btrfs: remove reduplicate check about root in the function btrfs_clean_quota_tree
Btrfs: return ENOMEM rather than use BUG_ON when btrfs_alloc_path fails
Btrfs: fix missing deleted items in btrfs_clean_quota_tree
btrfs: use only inline_pages from extent buffer
Btrfs: fix wrong reserved space when deleting a snapshot/subvolume
Btrfs: fix wrong reserved space in qgroup during snap/subv creation
Btrfs: remove unnecessary dget_parent/dput when creating the pending snapshot
btrfs: remove a printk from scan_one_device
Btrfs: fix NULL pointer after aborting a transaction
Btrfs: fix memory leak of log roots
Btrfs: copy everything if we've created an inline extent
btrfs: cleanup for open-coded alignment
Btrfs: do not change inode flags in rename
Btrfs: use reserved space for creating a snapshot
clear chunk_alloc flag on retryable failure
...
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git://git.kernel.org/pub/scm/linux/kernel/git/josef/btrfs-next into for-linus-3.9
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
Conflicts:
fs/btrfs/disk-io.c
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With this new ioctl(2) BTRFS_IOC_SET_FSLABEL, we can set/change the label of a mounted file system.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Reviewed-by: Goffredo Baroncelli <kreijack@inwind.it>
Reviewed-by: David Sterba <dsterba@suse.cz>
Reviewed-by: Goffredo Baroncelli <kreijack@inwind.it>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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Add a new ioctl(2) BTRFS_IOC_GET_FSLABLE, so that we can get the label upon a mounted filesystem.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Signed-off-by: Anand Jain <anand.jain@oracle.com>
Cc: Miao Xie <miaox@cn.fujitsu.com>
Cc: Goffredo Baroncelli <kreijack@inwind.it>
Cc: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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This patch adds the flag, BTRFS_SEND_FLAG_NO_FILE_DATA to the btrfs send
ioctl code. When this flag is set, the btrfs send code will never write file
data into the stream (thus also avoiding expensive reads of that data in the
first place). BTRFS_SEND_C_UPDATE_EXTENT commands will be sent (instead of
BTRFS_SEND_C_WRITE) with an offset, length pair indicating the extent in
question.
This patch does not affect the operation of BTRFS_SEND_C_CLONE commands -
they will continue to be sent when a search finds an appropriate extent to
clone from.
Signed-off-by: Mark Fasheh <mfasheh@suse.de>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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The header file will then be installed under /usr/include/linux so that
userspace applications can refer to Btrfs ioctls by name and use the same
structs used internally in the kernel.
Signed-off-by: Filipe Brandenburger <filbranden@google.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
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This patch introduces enhanced message support that allows the
device-mapper core to recognise messages that are common to all devices,
and for messages to return data to userspace.
Core messages are processed by the function "message_for_md". If the
device mapper doesn't support the message, it is passed to the target
driver.
If the message returns data, the kernel sets the flag
DM_MESSAGE_OUT_FLAG.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Device-mapper ioctls receive and send data in a buffer supplied
by userspace. The buffer has two parts. The first part contains
a 'struct dm_ioctl' and has a fixed size. The second part depends
on the ioctl and has a variable size.
This patch recognises the specific ioctls that do not use the variable
part of the buffer and skips allocating memory for it.
In particular, when a device is suspended and a resume ioctl is sent,
this now avoid memory allocation completely.
The variable "struct dm_ioctl tmp" is moved from the function
copy_params to its caller ctl_ioctl and renamed to param_kernel.
It is used directly when the ioctl function doesn't need any arguments.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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Currently, the NBD device does not accept flush requests from the Linux
block layer. If the NBD server opened the target with neither O_SYNC nor
O_DSYNC, however, the device will be effectively backed by a writeback
cache. Without issuing flushes properly, operation of the NBD device will
not be safe against power losses.
The NBD protocol has support for both a cache flush command and a FUA
command flag; the server will also pass a flag to note its support for
these features. This patch adds support for the cache flush command and
flag. In the kernel, we receive the flags via the NBD_SET_FLAGS ioctl,
and map NBD_FLAG_SEND_FLUSH to the argument of blk_queue_flush. When the
flag is active the block layer will send REQ_FLUSH requests, which we
translate to NBD_CMD_FLUSH commands.
FUA support is not included in this patch because all free software
servers implement it with a full fdatasync; thus it has no advantage over
supporting flush only. Because I [Paolo] cannot really benchmark it in a
realistic scenario, I cannot tell if it is a good idea or not. It is also
not clear if it is valid for an NBD server to support FUA but not flush.
The Linux block layer gives a warning for this combination, the NBD
protocol documentation says nothing about it.
The patch also fixes a small problem in the handling of flags: nbd->flags
must be cleared at the end of NBD_DO_IT, but the driver was not doing
that. The bug manifests itself as follows. Suppose you two different
client/server pairs to start the NBD device. Suppose also that the first
client supports NBD_SET_FLAGS, and the first server sends
NBD_FLAG_SEND_FLUSH; the second pair instead does neither of these two
things. Before this patch, the second invocation of NBD_DO_IT will use a
stale value of nbd->flags, and the second server will issue an error every
time it receives an NBD_CMD_FLUSH command.
This bug is pre-existing, but it becomes much more important after this
patch; flush failures make the device pretty much unusable, unlike
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Bligh <alex@alex.org.uk>
Acked-by: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Given the obvious distinction between kernel and userspace supported
by uapi/, it seems unnecessary to comment on that.
Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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There is no documented methods to mark FAT as dirty. Unofficially MS
started to use reserved Byte in boot sector for this purpose, at least
since Win 2000. With Win 7 user is warned if fs is dirty and asked to
clean it.
Different versions of Win, handle it in different ways, but always have
same meaning:
- Win 2000 and XP, set it on write operations and
remove it after operation was finnished
- Win 7, set dirty flag on first write and remove it on umount.
We will do it as follows:
- set dirty flag on mount. If fs was initially dirty, warn user,
remember it and do not do any changes to boot sector.
- clean it on umount. If fs was initially dirty, leave it dirty.
- do not do any thing if fs mounted read-only.
- TODO: leave fs dirty if we found some error after mount.
Signed-off-by: Oleksij Rempel <bug-track@fisher-privat.net>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Later we will need "state" field to check if volume was cleanly unmounted.
Signed-off-by: Oleksij Rempel <bug-track@fisher-privat.net>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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hfsplus: reworked support of extended attributes.
Current mainline implementation of hfsplus file system driver treats as
extended attributes only two fields (fdType and fdCreator) of user_info
field in file description record (struct hfsplus_cat_file). It is
possible to get or set only these two fields as extended attributes.
But HFS+ treats as com.apple.FinderInfo extended attribute an union of
user_info and finder_info fields as for file (struct hfsplus_cat_file)
as for folder (struct hfsplus_cat_folder). Moreover, current mainline
implementation of hfsplus file system driver doesn't support special
metadata file - attributes tree.
Mac OS X 10.4 and later support extended attributes by making use of the
HFS+ filesystem Attributes file B*-tree feature which allows for named
forks. Mac OS X supports only inline extended attributes, limiting
their size to 3802 bytes. Any regular file may have a list of extended
attributes. HFS+ supports an arbitrary number of named forks. Each
attribute is denoted by a name and the associated data. The name is a
null-terminated Unicode string. It is possible to list, to get, to set,
and to remove extended attributes from files or directories.
It exists some peculiarity during getting of extended attributes list by
means of getfattr utility. The getfattr utility expects prefix "user."
before any extended attribute's name. So, it ignores any names that
don't contained such prefix. Such behavior of getfattr utility results
in unexpected empty output of extended attributes list even in the case
when file (or folder) contains extended attributes. It needs to use
empty string as regular expression pattern for names matching (getfattr
--match="").
For support of extended attributes in HFS+:
1. It was added necessary on-disk layout declarations related to Attributes
tree into hfsplus_raw.h file.
2. It was added attributes.c file with implementation of functionality of
manipulation by records in Attributes tree.
3. It was reworked hfsplus_listxattr, hfsplus_getxattr, hfsplus_setxattr
functions in ioctl.c. Moreover, it was added hfsplus_removexattr method.
This patch:
Add osx.* prefix for handling namespace of Mac OS X extended attributes.
[akpm@linux-foundation.org: checkpatch fixes]
Signed-off-by: Vyacheslav Dubeyko <slava@dubeyko.com>
Reported-by: Hin-Tak Leung <htl10@users.sourceforge.net>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Pull VFIO updates from Alex Williamson:
- Fixes PCIe v1 extended capability support
- Cleans up read/write access functions
- Fix Removal test to properly wait until devices are unused
- Enable pcieport driver usage for non-accessible devices w/in groups
- Extensions for PCI VGA support
* tag 'vfio-v3.9-rc1' of git://github.com/awilliam/linux-vfio:
drivers/vfio: remove depends on CONFIG_EXPERIMENTAL
vfio-pci: Add support for VGA region access
vfio-pci: Manage user power state transitions
vfio: whitelist pcieport
vfio: Protect vfio_dev_present against device_del
vfio-pci: Cleanup BAR access
vfio-pci: Cleanup read/write functions
vfio-pci: Enable PCIe extended capabilities on v1
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PCI defines display class VGA regions at I/O port address 0x3b0, 0x3c0
and MMIO address 0xa0000. As these are non-overlapping, we can ignore
the I/O port vs MMIO difference and expose them both in a single
region. We make use of the VGA arbiter around each access to
configure chipset access as necessary.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab:
- Some cleanups at V4L2 documentation
- new drivers: ts2020 frontend, ov9650 sensor, s5c73m3 sensor,
sh-mobile veu mem2mem driver, radio-ma901, davinci_vpfe staging
driver
- Lots of missing MAINTAINERS entries added
- several em28xx driver improvements, including its conversion to
videobuf2
- several fixups on drivers to make them to better comply with the API
- DVB core: add support for DVBv5 stats, allowing the implementation of
statistics for new standards like ISDB
- mb86a20s: add statistics to the driver
- lots of new board additions, cleanups, and driver improvements.
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (596 commits)
[media] media: Add 0x3009 USB PID to ttusb2 driver (fixed diff)
[media] rtl28xxu: Add USB IDs for Compro VideoMate U620F
[media] em28xx: add usb id for terratec h5 rev. 3
[media] media: rc: gpio-ir-recv: add support for device tree parsing
[media] mceusb: move check earlier to make smatch happy
[media] radio-si470x doc: add info about v4l2-ctl and sox+alsa
[media] staging: media: Remove unnecessary OOM messages
[media] sh_vou: Use vou_dev instead of vou_file wherever possible
[media] sh_vou: Use video_drvdata()
[media] drivers/media/platform/soc_camera/pxa_camera.c: use devm_ functions
[media] mt9t112: mt9t111 format set up differs from mt9t112
[media] sh-mobile-ceu-camera: fix SHARPNESS control default
Revert "[media] fc0011: Return early, if the frequency is already tuned"
[media] cx18/ivtv: fix regression: remove __init from a non-init function
[media] em28xx: fix analog streaming with USB bulk transfers
[media] stv0900: remove unnecessary null pointer check
[media] fc0011: Return early, if the frequency is already tuned
[media] fc0011: Add some sanity checks and cleanups
[media] fc0011: Fix xin value clamping
Revert "[media] [PATH,1/2] mxl5007 move reset to attach"
...
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Convert the meye driver to the control framework. Some private controls
have been replaced with standardized controls (SHARPNESS and JPEGQUAL).
The AGC control looks like it can be replaced by the AUTOGAIN control, but
it isn't a boolean so I do not know how to interpret it.
The FRAMERATE control looks like it can be replaced by S_PARM, but again,
without knowing how to interpret it I decided to leave it alone.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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When the control IDs were split off from videodev2.h to v4l2-controls.h
these new Digital Video controls were forgotten (the two patches may
have crossed one another).
Move these controls to their proper place in v4l2-controls.h.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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This patch adds a helper function that allows to modify range,
i.e. minimum, maximum, step and default value of a v4l2 control,
after the control has been created and initialized. This is helpful
in situations when range of a control depends on user configurable
parameters, e.g. camera sensor absolute exposure time depending on
an output image resolution and frame rate.
v4l2_ctrl_modify_range() function allows to modify range of an
INTEGER, BOOL, MENU, INTEGER_MENU and BITMASK type controls.
Based on a patch from Hans Verkuil http://patchwork.linuxtv.org/patch/8654.
Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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* v4l_for_linus: (464 commits)
[media] uvcvideo: Set error_idx properly for S_EXT_CTRLS failures
[media] uvcvideo: Cleanup leftovers of partial revert
[media] uvcvideo: Return -EACCES when trying to set a read-only control
Linux 3.8-rc3
mm: reinstante dropped pmd_trans_splitting() check
cred: Remove tgcred pointer from struct cred
drm/ttm: fix fence locking in ttm_buffer_object_transfer
ARM: clps711x: Fix bad merge of clockevents setup
ARM: highbank: save and restore L2 cache and GIC on suspend
ARM: highbank: add a power request clear
ARM: highbank: fix secondary boot and hotplug
ARM: highbank: fix typos with hignbank in power request functions
ARM: dts: fix highbank cpu mpidr values
ARM: dts: add device_type prop to cpu nodes on Calxeda platforms
drm/prime: drop reference on imported dma-buf come from gem
xen/netfront: improve truesize tracking
ARM: mx5: Fix MX53 flexcan2 clock
ARM: OMAP2+: am33xx-hwmod: Fix wrongly terminated am33xx_usbss_mpu_irqs array
sctp: fix Kconfig bug in default cookie hmac selection
EDAC: Cleanup device deregistering path
...
Conflicts:
drivers/media/pci/dm1105/dm1105.c
drivers/media/platform/soc_camera/mx2_camera.c
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The DVBv3 statistics parameters are limited on several ways:
- It doesn't provide any way to indicate the used measure,
so userspace need to guess how to calculate/use it;
- Only a limited set of stats are supported;
- Can't be called in a way to require them to be filled
all at once (atomic reads from the hardware), with may
cause troubles on interpreting them on userspace;
- On some OFDM delivery systems, the carriers can be
independently modulated, having different properties.
Currently, there's no way to report per-layer stats.
To address the above issues, adding a new DVBv5-based stats API.
While here, correct inner code nomenclature on a few places.
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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It has been over 3 years since the V4L2_CID_[HV]CENTER were deprecated.
Clean up the DocBook and remove the V4L2_CID_VCENTER_DEPRECATED,
V4L2_CID_VCENTER_DEPRECATED control related paragraphs.
Remove the V4L2_CID_[HV]CENTER controls definitions from v4l2-controls.h,
these controls are not used by any driver in the mainline now.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Linux 3.8-rc1
* tag 'v3.8-rc1': (10696 commits)
Linux 3.8-rc1
Revert "nfsd: warn on odd reply state in nfsd_vfs_read"
ARM: dts: fix duplicated build target and alphabetical sort out for exynos
dm stripe: add WRITE SAME support
dm: remove map_info
dm snapshot: do not use map_context
dm thin: dont use map_context
dm raid1: dont use map_context
dm flakey: dont use map_context
dm raid1: rename read_record to bio_record
dm: move target request nr to dm_target_io
dm snapshot: use per_bio_data
dm verity: use per_bio_data
dm raid1: use per_bio_data
dm: introduce per_bio_data
dm kcopyd: add WRITE SAME support to dm_kcopyd_zero
dm linear: add WRITE SAME support
dm: add WRITE SAME support
dm: prepare to support WRITE SAME
dm ioctl: use kmalloc if possible
...
Conflicts:
MAINTAINERS
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This patch adds definition of media bus code for YUV pixel format
transferred in 30-bit samples where each component has 10 bits width.
[mchehab@redhat.com: fix a merge conflict at v4l2-mediabus.h]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Define video buffer flags for different timestamp types. Everything up to
now have used either realtime clock or monotonic clock, without a way to
tell which clock the timestamp was taken from.
Also document that the clock source of the timestamp in the timestamp field
depends on buffer flags.
[mchehab@redhat.com: fix a few wrong references to Kernel 3.8 - as this patch
is meant for 3.9]
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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add new macro V4L2_PIX_FMT_SGRBG10ALAW8 and associated formats
to represent Bayer format frames compressed by A-LAW algorithm,
add V4L2_PIX_FMT_UV8 to represent storage of CbCr data (UV interleaved)
only.
Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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add new enum entries for supporting the media-bus formats on dm365.
These include some bayer and some non-bayer formats.
V4L2_MBUS_FMT_YDYUYDYV8_1X16 and V4L2_MBUS_FMT_UV8_1X8 are used
internal to the hardware by the resizer.
V4L2_MBUS_FMT_SBGGR10_ALAW8_1X8 represents the bayer ALAW format
that is supported by dm365 hardware.
Signed-off-by: Manjunath Hadli <manjunath.hadli@ti.com>
Signed-off-by: Lad, Prabhakar <prabhakar.lad@ti.com>
Acked-by: Sakari Ailus <sakari.ailus@iki.fi>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Linux 3.7-rc8
* tag 'v3.7-rc8': (112 commits)
Linux 3.7-rc8
[parisc] open(2) compat bug
Revert "sched, autogroup: Stop going ahead if autogroup is disabled"
open*(2) compat fixes (s390, arm64)
8139cp: fix coherent mapping leak in error path.
tcp: fix crashes in do_tcp_sendpages()
workqueue: mod_delayed_work_on() shouldn't queue timer on 0 delay
workqueue: exit rescuer_thread() as TASK_RUNNING
x86, fpu: Avoid FPU lazy restore after suspend
drivers/rtc/rtc-tps65910.c: fix invalid pointer access on _remove()
mm: soft offline: split thp at the beginning of soft_offline_page()
mm: avoid waking kswapd for THP allocations when compaction is deferred or contended
revert "Revert "mm: remove __GFP_NO_KSWAPD""
mm: vmscan: fix endless loop in kswapd balancing
mm/vmemmap: fix wrong use of virt_to_page
mm: compaction: fix return value of capture_free_page()
fix off-by-one in argument passed by iterate_fd() to callbacks
lookup_one_len: don't accept . and ..
cifs: get rid of blind d_drop() in readdir
nfs_lookup_revalidate(): fix a leak
...
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git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
Pull libata updates from Jeff Garzik:
1) apply, and then revert, the sysfs export of ATA host controller
number. Discussion was continuing after patch application, trying to
figure out how to best mesh exported data with the installers,
boot-time agents and other parties that want this info.
2) Merge Zero-Power Optical Device Driver (ZPODD) support, bringing the
wonderfulness of sane power management to your CD/DVD device.
Includes one SCSI-subsystem patch (with appropriate ACKs), adding
runtime PM support to 'sr' driver. That is the ZPODD interaction
bits.
Patchset went through some 13 revisions before it got here; kudos to
Intel for persistence.
3) pata_samsung_cf: use devm_clk_get()
4) more ata_piix, ahci PCI IDs
5) Add SATA driver for R-Car SoC
6) Convert libata to use devm_ioremap_resource (Note: I think Greg sent
this to you, also)
7) Set proper Sense Key (SK) in the SCSI simulator when ATA passthrough
indicates check condition. Google and specification hawks everywhere
shall rejoice.
* tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: (22 commits)
[libata] fix smatch warning for zpodd_wake_dev
[libata] Set proper SK when CK_COND is set.
[libata] Convert to devm_ioremap_resource()
libata: add R-Car SATA driver
ahci: Add Device IDs for Intel Wellsburg PCH
ata_piix: Add Device IDs for Intel Wellsburg PCH
[SCSI] remove can_power_off flag from scsi_device
[libata] scsi: no poll when ODD is powered off
[SCSI] sr: support runtime pm
ahci: AHCI-mode SATA patch for Intel Avoton DeviceIDs
ata_piix: IDE-mode SATA patch for Intel Avoton DeviceIDs
[libata] PM code cleanup for ata port
[libata] pm: differentiate system and runtime pm for ata port
Revert "libata: export host controller number thru /sys"
libata: do not suspend port if normal ODD is attached
libata: expose pm qos flags for ata device
libata: handle power transition of ODD
libata: check zero power ready status for ZPODD
libata: move acpi notification code to zpodd
libata: identify and init ZPODD devices
...
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The ODD can be enabled for ZPODD if the following three conditions are
satisfied:
1 The ODD supports device attention;
2 The platform can runtime power off the ODD through ACPI;
3 The ODD is either slot type or drawer type.
For such ODDs, zpodd_init is called and a new structure is allocated for
it to store ZPODD related stuffs.
And the zpodd_dev_enabled function is used to test if ZPODD is currently
enabled for this ODD.
A new config CONFIG_SATA_ZPODD is added to selectively build ZPODD code.
Signed-off-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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