linux-kernel - Re: [RFC PATCH] fuse: support cache revalidation in writeback

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Message-ID: <CAJfpeguESQm1KsQLyoMRTevLttV8N8NTGsb2tRbNS1AQ_pNAww@mail.gmail.com>
Date:   Mon, 25 Apr 2022 14:41:16 +0200
From:   Miklos Szeredi <miklos@...redi.hu>
To:     Jiachen Zhang <zhangjiachen.jaycee@...edance.com>
Cc:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xie Yongji <xieyongji@...edance.com>
Subject: Re: [RFC PATCH] fuse: support cache revalidation in writeback_cache mode

On Fri, 25 Mar 2022 at 14:23, Jiachen Zhang
<zhangjiachen.jaycee@...edance.com> wrote:
>
> Hi all,
>
> This RFC patch implements attr cache and data cache revalidation for
> fuse writeback_cache mode in kernel. Looking forward to any suggestions
> or comments on this feature.

Quick question before going into the details:  could the cache
revalidation be done in the userspace filesystem instead, which would
set/clear FOPEN_KEEP_CACHE based on the result of the revalidation?

Thanks,
Miklos