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f2fs: introduce sysfs atomic write statistics

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introduce the below 4 new sysfs node for atomic write statistics.
- current_atomic_write: the total current atomic write block count,
                        which is not committed yet.
- peak_atomic_write: the peak value of total current atomic write block
                     count after boot.
- committed_atomic_block: the accumulated total committed atomic write
                          block count after boot.
- revoked_atomic_block: the accumulated total revoked atomic write block
                        count after boot.

Signed-off-by: Daeho Jeong <daehojeong@google.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Daeho Jeong
2022-07-18 16:02:48 -07:00
committed by Jaegeuk Kim
parent dc10ba6c18
commit affb55ba78
7 changed files with 121 additions and 3 deletions
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fs/f2fs/super.c
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@@ -3575,6 +3575,7 @@ static void init_sb_info(struct f2fs_sb_info *sbi)
sbi->max_fragment_chunk = DEF_FRAGMENT_SIZE;
sbi->max_fragment_hole = DEF_FRAGMENT_SIZE;
spin_lock_init(&sbi->gc_urgent_high_lock);
atomic64_set(&sbi->current_atomic_write, 0);
sbi->dir_level = DEF_DIR_LEVEL;
sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;