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31867b23d7
linux/fs/f2fs
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Jaegeuk Kim 31867b23d7 f2fs: wait on atomic writes to count F2FS_CP_WB_DATA 
Otherwise, we can get wrong counts incurring checkpoint hang.

IO_W (CP:  -24, Data:   24, Flush: (   0    0    1), Discard: (   0    0))

Thread A                        Thread B
- f2fs_write_data_pages
 -  __write_data_page
  - f2fs_submit_page_write
   - inc_page_count(F2FS_WB_DATA)
     type is F2FS_WB_DATA due to file is non-atomic one
- f2fs_ioc_start_atomic_write
 - set_inode_flag(FI_ATOMIC_FILE)
                                - f2fs_write_end_io
                                 - dec_page_count(F2FS_WB_CP_DATA)
                                   type is F2FS_WB_DATA due to file becomes
                                   atomic one

Cc: <stable@vger.kernel.org>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2019-01-08 09:34:27 -08:00
..
acl.c f2fs: use kvmalloc, if kmalloc is failed 2018-12-26 15:16:53 -08:00
acl.h f2fs: add SPDX license identifiers 2018-09-12 13:07:10 -07:00
checkpoint.c f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
data.c f2fs-for-4.21-rc1 2018-12-31 09:41:37 -08:00
debug.c f2fs: correct wrong spelling, issing_* 2018-12-26 15:16:54 -08:00
dir.c f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
extent_cache.c f2fs: use rb_*_cached friends 2018-10-16 09:36:59 -07:00
f2fs.h f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
file.c f2fs: wait on atomic writes to count F2FS_CP_WB_DATA 2019-01-08 09:34:27 -08:00
gc.c f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
gc.h f2fs: add SPDX license identifiers 2018-09-12 13:07:10 -07:00
hash.c f2fs: add SPDX license identifiers 2018-09-12 13:07:10 -07:00
inline.c f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
inode.c f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
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: use kvmalloc, if kmalloc is failed 2018-12-26 15:16:53 -08:00
node.c f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
node.h f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
recovery.c f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
segment.c f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
segment.h f2fs: introduce __is_large_section() for cleanup 2018-11-26 15:53:55 -08:00
shrinker.c f2fs: fix sbi->extent_list corruption issue 2018-12-26 15:16:54 -08:00
super.c f2fs: fix use-after-free issue when accessing sbi->stat_info 2018-12-26 15:18:10 -08:00
sysfs.c f2fs: export migration_granularity sysfs entry 2018-11-26 15:53:56 -08:00
trace.c f2fs: add SPDX license identifiers 2018-09-12 13:07:10 -07:00
trace.h f2fs: add SPDX license identifiers 2018-09-12 13:07:10 -07:00
xattr.c f2fs: sanity check of xattr entry size 2018-12-26 19:56:23 -08:00
xattr.h f2fs: add SPDX license identifiers 2018-09-12 13:07:10 -07:00