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f2fs: fix to return SHRINK_EMPTY if no objects to free

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Quoted from include/linux/shrinker.h
"count_objects should return the number of freeable items in the cache. If
 there are no objects to free, it should return SHRINK_EMPTY, while 0 is
 returned in cases of the number of freeable items cannot be determined
 or shrinker should skip this cache for this time (e.g., their number
 is below shrinkable limit)."

Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Zhiguo Niu 2025-02-10 09:24:09 +08:00 committed by Jaegeuk Kim
parent eb85c2410d
commit bd409934c0
1 changed files with 1 additions and 1 deletions
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2
fs/f2fs/shrinker.c
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@ -73,7 +73,7 @@ unsigned long f2fs_shrink_count(struct shrinker *shrink,
mutex_unlock(&sbi->umount_mutex);
}
spin_unlock(&f2fs_list_lock);
return count;
return count ?: SHRINK_EMPTY;
}
unsigned long f2fs_shrink_scan(struct shrinker *shrink,