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Subject: Re: [PATCH v2 02/47] mm: shrinker: remove redundant shrinker_rwsem in
 debugfs operations
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From:   Muchun Song <muchun.song@linux.dev>
In-Reply-To: <20230724094354.90817-3-zhengqi.arch@bytedance.com>
Date:   Tue, 25 Jul 2023 11:17:24 +0800
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To:     Qi Zheng <zhengqi.arch@bytedance.com>
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> On Jul 24, 2023, at 17:43, Qi Zheng <zhengqi.arch@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@bytedance.com>

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

Thanks.