linux-kernel - Re: [PATCH][v2] virtio_fs: Remove redundant spinlock in virtio_fs_request

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Message-ID: <CAJSP0QV8bq_zbxAQD35c_D_3uYO8jnXoVHgp_c2h=FOjPxBgrw@mail.gmail.com>
Date: Sun, 15 Jun 2025 09:29:09 -0400
From: Stefan Hajnoczi <stefanha@...il.com>
To: lirongqing <lirongqing@...du.com>
Cc: vgoyal@...hat.com, stefanha@...hat.com, miklos@...redi.hu, 
	eperezma@...hat.com, virtualization@...ts.linux.dev, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][v2] virtio_fs: Remove redundant spinlock in virtio_fs_request_complete()

On Sun, Jun 15, 2025 at 9:21 AM lirongqing <lirongqing@...du.com> wrote:
>
> From: Li RongQing <lirongqing@...du.com>
>
> Since clear_bit is an atomic operation, the spinlock is redundant and
> can be removed, reducing lock contention is good for performance.
>
> Signed-off-by: Li RongQing <lirongqing@...du.com>
> ---
> Diff with v1: remove unused variable "fpq"
>
>  fs/fuse/virtio_fs.c | 3 ---
>  1 file changed, 3 deletions(-)

Reviewed-by: Stefan Hajnoczi <stefanha@...hat.com>