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UPSTREAM: 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)."

Change-Id: I2b864f85d56c781508fb24ac0b5bf259360aadb9
Signed-off-by: Zhiguo Niu <zhiguo.niu@unisoc.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
(cherry picked from commit bd409934c0619a6c3507891844aeb0c0dca69e18)
This commit is contained in:
Zhiguo Niu
2025-02-10 09:24:09 +08:00
committed by Carlos Llamas
parent 85e0019c03
commit 5f937a44f2
1 changed files with 1 additions and 1 deletions
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fs/f2fs/shrinker.c
+1 -1
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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,