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alistair23-linux/fs/f2fs
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Chao Yu 8648de2c58 f2fs: add bio cache for IPU 
SQLite in Wal mode may trigger sequential IPU write in db-wal file, after
commit d1b3e72d54 ("f2fs: submit bio of in-place-update pages"), we
lost the chance of merging page in inner managed bio cache, result in
submitting more small-sized IO.

So let's add temporary bio in writepages() to cache mergeable write IO as
much as possible.

Test case:
1. xfs_io -f /mnt/f2fs/file -c "pwrite 0 65536" -c "fsync"
2. xfs_io -f /mnt/f2fs/file -c "pwrite 0 65536" -c "fsync"

Before:
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65544, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65552, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65560, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65568, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65576, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65584, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65592, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65600, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65608, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65616, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65624, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65632, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65640, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65648, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65656, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65664, size = 4096
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), NODE, sector = 57352, size = 4096

After:
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), DATA, sector = 65544, size = 65536
f2fs_submit_write_bio: dev = (251,0)/(251,0), rw = WRITE(S), NODE, sector = 57368, size = 4096

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
 		2019-05-23 07:03:19 -07:00
..
Kconfig fscrypt: remove filesystem specific build config option 2019-01-23 23:56:43 -05:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
acl.c f2fs: Replace spaces with tab 2019-05-08 21:23:11 -07:00
acl.h f2fs: add SPDX license identifiers 2018-09-12 13:07:10 -07:00
checkpoint.c f2fs: fix to check layout on last valid checkpoint park 2019-05-23 07:03:18 -07:00
data.c f2fs: add bio cache for IPU 2019-05-23 07:03:19 -07:00
debug.c f2fs: no need to check return value of debugfs_create functions 2019-01-22 14:25:25 +01:00
dir.c f2fs-for-5.1-rc1 2019-03-15 13:42:53 -07:00
extent_cache.c f2fs: fix to initialize variable to avoid UBSAN/smatch warning 2019-01-22 15:31:26 -08:00
f2fs.h f2fs: add bio cache for IPU 2019-05-23 07:03:19 -07:00
file.c f2fs: add tracepoint for f2fs_filemap_fault() 2019-05-08 21:23:13 -07:00
gc.c f2fs: allow ssr block allocation during checkpoint=disable period 2019-05-23 07:03:18 -07:00
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: fix to retrieve inline xattr space 2019-05-08 21:23:06 -07:00
inode.c f2fs: introduce DATA_GENERIC_ENHANCE 2019-05-08 21:23:13 -07:00
namei.c f2fs-for-5.2-rc1 2019-05-14 08:55:43 -07:00
node.c f2fs-for-5.2-rc1 2019-05-14 08:55:43 -07:00
node.h f2fs: check PageWriteback flag for ordered case 2018-12-26 15:16:56 -08:00
recovery.c f2fs: introduce DATA_GENERIC_ENHANCE 2019-05-08 21:23:13 -07:00
segment.c f2fs: add bio cache for IPU 2019-05-23 07:03:19 -07:00
segment.h f2fs: introduce DATA_GENERIC_ENHANCE 2019-05-08 21:23:13 -07:00
shrinker.c f2fs: fix sbi->extent_list corruption issue 2018-12-26 15:16:54 -08:00
super.c f2fs: fix to check layout on last valid checkpoint park 2019-05-23 07:03:18 -07:00
sysfs.c f2fs-for-5.1-rc1 2019-03-15 13:42:53 -07:00
trace.c f2fs: do not use mutex lock in atomic context 2019-03-05 19:58:06 -08:00
trace.h f2fs: add SPDX license identifiers 2018-09-12 13:07:10 -07:00
xattr.c f2fs: fix to avoid accessing xattr across the boundary 2019-05-09 09:43:29 -07:00
xattr.h f2fs: fix to avoid accessing xattr across the boundary 2019-05-09 09:43:29 -07:00