[PATCH v2 02/47] mm: shrinker: remove redundant shrinker_rwsem in debugfs operations

Muchun Song muchun.song at linux.dev
Tue Jul 25 03:17:24 UTC 2023



> On Jul 24, 2023, at 17:43, Qi Zheng <zhengqi.arch at bytedance.com> wrote:
> 
> The debugfs_remove_recursive() will wait for debugfs_file_put() to return,
> so the shrinker will not be freed when doing debugfs operations (such as
> shrinker_debugfs_count_show() and shrinker_debugfs_scan_write()), so there
> is no need to hold shrinker_rwsem during debugfs operations.
> 
> Signed-off-by: Qi Zheng <zhengqi.arch at bytedance.com>

Reviewed-by: Muchun Song <songmuchun at bytedance.com>

Thanks.




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