linux-kernel - Re: [PATCH] fuse: add fast path for fuse_range_is

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Message-ID: <CAJfpegvpHb1s4eByjwKT6tEy+E8ToNXyke12=5zz3WdV_PDcrQ@mail.gmail.com>
Date: Thu, 22 Aug 2024 15:42:24 +0200
From: Miklos Szeredi <miklos@...redi.hu>
To: yangyun <yangyun50@...wei.com>
Cc: linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	lixiaokeng@...wei.com
Subject: Re: [PATCH] fuse: add fast path for fuse_range_is_writeback

On Wed, 14 Aug 2024 at 11:36, yangyun <yangyun50@...wei.com> wrote:
>
> In some cases, the fi->writepages may be empty. And there is no need
> to check fi->writepages with spin_lock, which may have an impact on
> performance due to lock contention. For example, in scenarios where
> multiple readers read the same file without any writers, or where
> the page cache is not enabled.
>
> Also remove the outdated comment since commit 6b2fb79963fb ("fuse:
> optimize writepages search") has optimize the situation by replacing
> list with rb-tree.

Thanks, applied.

Miklos