linux-stable/fs/f2fs
Chao Yu 1dc0f8991d f2fs: fix to avoid race in between atomic write and background GC
Sqlite user			Background GC
				- move_data_block
				  : move page #1
				 - f2fs_is_atomic_file
- f2fs_ioc_start_atomic_write
- f2fs_ioc_commit_atomic_write
 - commit_inmem_pages
   : commit page #1 & set node #2 dirty
				 - f2fs_submit_page_write
				  - f2fs_update_data_blkaddr
				   - set_page_dirty
				     : set node #2 dirty
 - f2fs_do_sync_file
  - fsync_node_pages
   : commit node #1 & node #2, then sudden power-cut

In a race case, we may check FI_ATOMIC_FILE flag before starting atomic
write flow, then we will commit meta data before data with reversed
order, after a sudden pow-cut, database transaction will be inconsistent.

So we'd better to exclude gc/atomic_write to each other by using lock
instead of flag checking.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-03-13 08:05:55 +09:00
..
acl.c posix_acl: convert posix_acl.a_refcount from atomic_t to refcount_t 2018-01-02 19:27:28 -08:00
acl.h
checkpoint.c f2fs: flush cp pack except cp pack 2 page at first 2018-03-13 08:05:43 +09:00
data.c f2fs: clean up f2fs_sb_has_xxx functions 2018-03-13 08:05:42 +09:00
debug.c f2fs: inject fault to kzalloc 2018-01-02 19:27:29 -08:00
dir.c f2fs: don't put dentry page in pagecache into highmem 2018-03-13 08:05:03 +09:00
extent_cache.c f2fs: remove redundant initialization of pointer 'p' 2018-03-13 08:05:45 +09:00
f2fs.h f2fs: add mount option for segment allocation policy 2018-03-13 08:05:50 +09:00
file.c f2fs: fix to avoid race in between atomic write and background GC 2018-03-13 08:05:55 +09:00
gc.c f2fs: do gc in greedy mode for whole range if gc_urgent mode is set 2018-03-13 08:05:54 +09:00
gc.h f2fs: add an ioctl to disable GC for specific file 2018-01-22 14:56:35 -08:00
hash.c f2fs: check entire encrypted bigname when finding a dentry 2017-05-04 11:44:35 -04:00
inline.c f2fs: don't put dentry page in pagecache into highmem 2018-03-13 08:05:03 +09:00
inode.c f2fs: don't put dentry page in pagecache into highmem 2018-03-13 08:05:03 +09:00
Kconfig fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at 2018-01-01 12:45:37 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namei.c f2fs: expose extension_list sysfs entry 2018-03-13 08:05:48 +09:00
node.c f2fs: use GFP_F2FS_ZERO for cleanup 2018-01-25 10:39:49 -08:00
node.h f2fs: allow to recover node blocks given updated checkpoint 2018-01-22 14:56:59 -08:00
recovery.c f2fs: fix to handle looped node chain during recovery 2018-03-13 08:05:40 +09:00
segment.c f2fs: issue discard aggressively in the gc_urgent mode 2018-03-13 08:05:53 +09:00
segment.h f2fs: add auto tuning for small devices 2018-03-13 08:05:51 +09:00
shrinker.c f2fs: obsolete ALLOC_NID_LIST list 2017-10-10 12:49:53 -07:00
super.c f2fs: set readdir_ra by default 2018-03-13 08:05:52 +09:00
sysfs.c f2fs: expose extension_list sysfs entry 2018-03-13 08:05:48 +09:00
trace.c f2fs: fix potential hangtask in f2fs_trace_pid 2018-01-02 19:27:30 -08:00
trace.h
xattr.c f2fs: correct removexattr behavior for null valued extended attribute 2018-01-22 14:56:57 -08:00
xattr.h