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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-01-06 16:43:09 -0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2020-01-17 16:48:43 -0800 |
| commit | 0e7f41974e9c6ceac3ac9b5d0377c5f74b1bc4fc (patch) | |
| tree | f0ac5c4242560a103d231f744a458355bc5d219d /fs/f2fs/segment.h | |
| parent | bf2cbd3c57159c2b639ee8797b52ab5af180bf83 (diff) | |
| download | linux-0e7f41974e9c6ceac3ac9b5d0377c5f74b1bc4fc.tar.bz2 | |
f2fs: add a way to turn off ipu bio cache
Setting 0x40 in /sys/fs/f2fs/dev/ipu_policy gives a way to turn off
bio cache, which is useufl to check whether block layer using hardware
encryption engine merges IOs correctly.
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/segment.h')
| -rw-r--r-- | fs/f2fs/segment.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/segment.h b/fs/f2fs/segment.h index a1b3951367cd..5e6cd8d8411d 100644 --- a/fs/f2fs/segment.h +++ b/fs/f2fs/segment.h @@ -608,6 +608,7 @@ static inline int utilization(struct f2fs_sb_info *sbi) * F2FS_IPU_FSYNC - activated in fsync path only for high performance flash * storages. IPU will be triggered only if the # of dirty * pages over min_fsync_blocks. + * F2FS_IPU_NOCACHE - disable IPU bio cache. * F2FS_IPUT_DISABLE - disable IPU. (=default option) */ #define DEF_MIN_IPU_UTIL 70 @@ -623,6 +624,7 @@ enum { F2FS_IPU_SSR_UTIL, F2FS_IPU_FSYNC, F2FS_IPU_ASYNC, + F2FS_IPU_NOCACHE, }; static inline unsigned int curseg_segno(struct f2fs_sb_info *sbi, |