[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH v2 02/47] mm: shrinker: remove redundant shrinker_rwsem in debugfs operations
- To: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
- From: Muchun Song <muchun.song@xxxxxxxxx>
- Date: Tue, 25 Jul 2023 11:17:24 +0800
- Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, david@xxxxxxxxxxxxx, tkhai@xxxxx, Vlastimil Babka <vbabka@xxxxxxx>, Roman Gushchin <roman.gushchin@xxxxxxxxx>, djwong@xxxxxxxxxx, Christian Brauner <brauner@xxxxxxxxxx>, "Paul E. McKenney" <paulmck@xxxxxxxxxx>, tytso@xxxxxxx, steven.price@xxxxxxx, cel@xxxxxxxxxx, Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>, yujie.liu@xxxxxxxxx, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Linux Memory Management List <linux-mm@xxxxxxxxx>, x86@xxxxxxxxxx, kvm@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-erofs@xxxxxxxxxxxxxxxx, linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx, cluster-devel@xxxxxxxxxx, linux-nfs@xxxxxxxxxxxxxxx, linux-mtd@xxxxxxxxxxxxxxxxxxx, rcu@xxxxxxxxxxxxxxx, netdev <netdev@xxxxxxxxxxxxxxx>, dri-devel@xxxxxxxxxxxxxxxxxxxxx, linux-arm-msm@xxxxxxxxxxxxxxx, dm-devel@xxxxxxxxxx, linux-raid@xxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, linux-xfs@xxxxxxxxxxxxxxx, linux-btrfs@xxxxxxxxxxxxxxx
- Delivery-date: Tue, 25 Jul 2023 04:24:41 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
> On Jul 24, 2023, at 17:43, Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx> 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@xxxxxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Thanks.
|
