Merge upstream-f2fs-stable-linux-4.4.y into android-4.4

* origin/upstream-f2fs-stable-linux-4.4.y:
  f2fs: set pin_file under CAP_SYS_ADMIN
  f2fs: fix to avoid deadlock in f2fs_read_inline_dir()
  f2fs: fix to adapt small inline xattr space in __find_inline_xattr()
  f2fs: fix to do sanity check with inode.i_inline_xattr_size
  f2fs: give some messages for inline_xattr_size
  f2fs: don't trigger read IO for beyond EOF page
  f2fs: fix to add refcount once page is tagged PG_private
  f2fs: remove wrong comment in f2fs_invalidate_page()
  f2fs: fix to use kvfree instead of kzfree
  f2fs: print more parameters in trace_f2fs_map_blocks
  f2fs: trace f2fs_ioc_shutdown
  f2fs: fix to avoid deadlock of atomic file operations
  f2fs: fix to dirty inode for i_mode recovery
  f2fs: give random value to i_generation
  f2fs: no need to take page lock in readdir
  f2fs: fix to update iostat correctly in IPU path
  f2fs: fix encrypted page memory leak
  f2fs: make fault injection covering __submit_flush_wait()
  f2fs: fix to retry fill_super only if recovery failed
  f2fs: silence VM_WARN_ON_ONCE in mempool_alloc
  f2fs: correct spelling mistake
  f2fs: fix wrong #endif
  f2fs: don't clear CP_QUOTA_NEED_FSCK_FLAG
  f2fs: don't allow negative ->write_io_size_bits
  f2fs: fix to check inline_xattr_size boundary correctly
  Revert "f2fs: fix to avoid deadlock of atomic file operations"
  Revert "f2fs: fix to check inline_xattr_size boundary correctly"
  f2fs: do not use mutex lock in atomic context
  f2fs: fix potential data inconsistence of checkpoint
  f2fs: fix to avoid deadlock of atomic file operations
  f2fs: fix to check inline_xattr_size boundary correctly
  f2fs: jump to label 'free_node_inode' when failing from d_make_root()
  f2fs: fix to document inline_xattr_size option
  f2fs: fix to data block override node segment by mistake
  f2fs: fix typos in code comments
  f2fs: sync filesystem after roll-forward recovery
  fs: export evict_inodes
  f2fs: flush quota blocks after turnning it off
  f2fs: avoid null pointer exception in dcc_info
  f2fs: don't wake up too frequently, if there is lots of IOs
  f2fs: try to keep CP_TRIMMED_FLAG after successful umount
  f2fs: add quick mode of checkpoint=disable for QA
  f2fs: run discard jobs when put_super
  f2fs: fix to set sbi dirty correctly
  f2fs: UBSAN: set boolean value iostat_enable correctly
  f2fs: add brackets for macros
  f2fs: check if file namelen exceeds max value
  f2fs: fix to trigger fsck if dirent.name_len is zero
  f2fs: no need to check return value of debugfs_create functions
  f2fs: export FS_NOCOW_FL flag to user
  f2fs: check inject_rate validity during configuring
  f2fs: remove set but not used variable 'err'
  f2fs: fix compile warnings: 'struct *' declared inside parameter list
  f2fs: change error code to -ENOMEM from -EINVAL

Change-Id: Ie1d5c18c7df01ffbe084ec5f4f63951ae8dc3aa0
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>

3 files changed, 58 insertions, 10 deletions

diff --git a/include/linux/f2fs_fs.h b/include/linux/f2fs_fs.h
index 162f83358abb..b19433738690 100644
--- a/include/linux/f2fs_fs.h
+++ b/include/linux/f2fs_fs.h
@@ -116,6 +116,7 @@ struct f2fs_super_block {
 /*
  * For checkpoint
  */
+#define CP_DISABLED_QUICK_FLAG		0x00002000
 #define CP_DISABLED_FLAG		0x00001000
 #define CP_QUOTA_NEED_FSCK_FLAG		0x00000800
 #define CP_LARGE_NAT_BITMAP_FLAG	0x00000400
@@ -186,7 +187,7 @@ struct f2fs_orphan_block {
 struct f2fs_extent {
 	__le32 fofs;		/* start file offset of the extent */
 	__le32 blk;		/* start block address of the extent */
-	__le32 len;		/* lengh of the extent */
+	__le32 len;		/* length of the extent */
 } __packed;
 
 #define F2FS_NAME_LEN		255
@@ -284,7 +285,7 @@ enum {
 
 struct node_footer {
 	__le32 nid;		/* node id */
-	__le32 ino;		/* inode nunmber */
+	__le32 ino;		/* inode number */
 	__le32 flag;		/* include cold/fsync/dentry marks and offset */
 	__le64 cp_ver;		/* checkpoint version */
 	__le32 next_blkaddr;	/* next node page block address */
@@ -489,12 +490,12 @@ typedef __le32	f2fs_hash_t;
 
 /*
  * space utilization of regular dentry and inline dentry (w/o extra reservation)
- *		regular dentry			inline dentry
- * bitmap	1 * 27 = 27			1 * 23 = 23
- * reserved	1 * 3 = 3			1 * 7 = 7
- * dentry	11 * 214 = 2354			11 * 182 = 2002
- * filename	8 * 214 = 1712			8 * 182 = 1456
- * total	4096				3488
+ *		regular dentry		inline dentry (def)	inline dentry (min)
+ * bitmap	1 * 27 = 27		1 * 23 = 23		1 * 1 = 1
+ * reserved	1 * 3 = 3		1 * 7 = 7		1 * 1 = 1
+ * dentry	11 * 214 = 2354		11 * 182 = 2002		11 * 2 = 22
+ * filename	8 * 214 = 1712		8 * 182 = 1456		8 * 2 = 16
+ * total	4096			3488			40
  *
  * Note: there are more reserved space in inline dentry than in regular
  * dentry, when converting inline dentry we should handle this carefully.
@@ -506,12 +507,13 @@ typedef __le32	f2fs_hash_t;
 #define SIZE_OF_RESERVED	(PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \
 				F2FS_SLOT_LEN) * \
 				NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP))
+#define MIN_INLINE_DENTRY_SIZE		40	/* just include '.' and '..' entries */
 
 /* One directory entry slot representing F2FS_SLOT_LEN-sized file name */
 struct f2fs_dir_entry {
 	__le32 hash_code;	/* hash code of file name */
 	__le32 ino;		/* inode number */
-	__le16 name_len;	/* lengh of file name */
+	__le16 name_len;	/* length of file name */
 	__u8 file_type;		/* file type */
 } __packed;
 
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 8544edd381a4..d3e971c185e4 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -2671,6 +2671,7 @@ static inline void lockdep_annotate_inode_mutex_key(struct inode *inode) { };
 #endif
 extern void unlock_new_inode(struct inode *);
 extern unsigned int get_next_ino(void);
+extern void evict_inodes(struct super_block *sb);
 
 extern void __iget(struct inode * inode);
 extern void iget_failed(struct inode *);
diff --git a/include/trace/events/f2fs.h b/include/trace/events/f2fs.h
index 0cdf6cc5c557..fe009522f4e1 100644
--- a/include/trace/events/f2fs.h
+++ b/include/trace/events/f2fs.h
@@ -141,6 +141,17 @@ TRACE_DEFINE_ENUM(CP_TRIMMED);
 		{ CP_SPEC_LOG_NUM,	"log type is 2" },		\
 		{ CP_RECOVER_DIR,	"dir needs recovery" })
 
+#define show_shutdown_mode(type)					\
+	__print_symbolic(type,						\
+		{ F2FS_GOING_DOWN_FULLSYNC,	"full sync" },		\
+		{ F2FS_GOING_DOWN_METASYNC,	"meta sync" },		\
+		{ F2FS_GOING_DOWN_NOSYNC,	"no sync" },		\
+		{ F2FS_GOING_DOWN_METAFLUSH,	"meta flush" },		\
+		{ F2FS_GOING_DOWN_NEED_FSCK,	"need fsck" })
+
+struct f2fs_sb_info;
+struct f2fs_io_info;
+struct extent_info;
 struct victim_sel_policy;
 struct f2fs_map_blocks;
 
@@ -525,6 +536,9 @@ TRACE_EVENT(f2fs_map_blocks,
 		__field(block_t,	m_lblk)
 		__field(block_t,	m_pblk)
 		__field(unsigned int,	m_len)
+		__field(unsigned int,	m_flags)
+		__field(int,	m_seg_type)
+		__field(bool,	m_may_create)
 		__field(int,	ret)
 	),
 
@@ -534,15 +548,22 @@ TRACE_EVENT(f2fs_map_blocks,
 		__entry->m_lblk		= map->m_lblk;
 		__entry->m_pblk		= map->m_pblk;
 		__entry->m_len		= map->m_len;
+		__entry->m_flags	= map->m_flags;
+		__entry->m_seg_type	= map->m_seg_type;
+		__entry->m_may_create	= map->m_may_create;
 		__entry->ret		= ret;
 	),
 
 	TP_printk("dev = (%d,%d), ino = %lu, file offset = %llu, "
-		"start blkaddr = 0x%llx, len = 0x%llx, err = %d",
+		"start blkaddr = 0x%llx, len = 0x%llx, flags = %u,"
+		"seg_type = %d, may_create = %d, err = %d",
 		show_dev_ino(__entry),
 		(unsigned long long)__entry->m_lblk,
 		(unsigned long long)__entry->m_pblk,
 		(unsigned long long)__entry->m_len,
+		__entry->m_flags,
+		__entry->m_seg_type,
+		__entry->m_may_create,
 		__entry->ret)
 );
 
@@ -1604,6 +1625,30 @@ DEFINE_EVENT(f2fs_sync_dirty_inodes, f2fs_sync_dirty_inodes_exit,
 	TP_ARGS(sb, type, count)
 );
 
+TRACE_EVENT(f2fs_shutdown,
+
+	TP_PROTO(struct f2fs_sb_info *sbi, unsigned int mode, int ret),
+
+	TP_ARGS(sbi, mode, ret),
+
+	TP_STRUCT__entry(
+		__field(dev_t,	dev)
+		__field(unsigned int, mode)
+		__field(int, ret)
+	),
+
+	TP_fast_assign(
+		__entry->dev = sbi->sb->s_dev;
+		__entry->mode = mode;
+		__entry->ret = ret;
+	),
+
+	TP_printk("dev = (%d,%d), mode: %s, ret:%d",
+		show_dev(__entry->dev),
+		show_shutdown_mode(__entry->mode),
+		__entry->ret)
+);
+
 #endif /* _TRACE_F2FS_H */
 
  /* This part must be outside protection */