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f2fs: introduce F2FS_IPU_HONOR_OPU_WRITE ipu policy

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Once F2FS_IPU_FORCE policy is enabled in some cases:
a) f2fs forces to use F2FS_IPU_FORCE in a small-sized volume
b) user sets F2FS_IPU_FORCE policy via sysfs

Then we may fail to defragment file due to IPU policy check, it doesn't
make sense, let's introduce a new IPU policy to allow OPU during file
defragmentation.

In small-sized volume, let's enable F2FS_IPU_HONOR_OPU_WRITE policy
by default.

Signed-off-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu
2022-02-04 15:19:46 +08:00
committed by Jaegeuk Kim
parent 03dd04e8c8
commit f4ac10b500
6 changed files with 44 additions and 19 deletions
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5
fs/f2fs/segment.h
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@@ -651,7 +651,9 @@ static inline int utilization(struct f2fs_sb_info *sbi)
* pages over min_fsync_blocks. (=default option)
* F2FS_IPU_ASYNC - do IPU given by asynchronous write requests.
* F2FS_IPU_NOCACHE - disable IPU bio cache.
* F2FS_IPUT_DISABLE - disable IPU. (=default option in LFS mode)
* F2FS_IPU_HONOR_OPU_WRITE - use OPU write prior to IPU write if inode has
* FI_OPU_WRITE flag.
* F2FS_IPU_DISABLE - disable IPU. (=default option in LFS mode)
*/
#define DEF_MIN_IPU_UTIL 70
#define DEF_MIN_FSYNC_BLOCKS 8
@@ -667,6 +669,7 @@ enum {
F2FS_IPU_FSYNC,
F2FS_IPU_ASYNC,
F2FS_IPU_NOCACHE,
F2FS_IPU_HONOR_OPU_WRITE,
};
static inline unsigned int curseg_segno(struct f2fs_sb_info *sbi,