[PATCH v2] erofs(shrinker): return SHRINK_EMPTY if no objects to free

[Gao Xiang]

On 2025/1/16 16:33, Chen Linxuan wrote:
> Comments in file include/linux/shrinker.h says that
> `count_objects` of `struct shrinker` should return SHRINK_EMPTY
> when there are no objects to free.
> 
>> 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: Chen Linxuan <chenlinxuan at uniontech.com>

Reviewed-by: Gao Xiang <hsiangkao at linux.alibaba.com>

Thanks,
Gao Xiang