linux-kernel - Re: [PATCH v6 1/7] kernfs: move revalidate to be near lookup

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Message-ID: <CAJfpegvsi7CjdGORphOZTHg_fEdwidszhyKT94CRQJ3bYLogBQ@mail.gmail.com>
Date:   Fri, 11 Jun 2021 14:45:54 +0200
From:   Miklos Szeredi <miklos@...redi.hu>
To:     Ian Kent <raven@...maw.net>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Tejun Heo <tj@...nel.org>, Eric Sandeen <sandeen@...deen.net>,
        Fox Chen <foxhlchen@...il.com>,
        Brice Goglin <brice.goglin@...il.com>,
        Al Viro <viro@...iv.linux.org.uk>,
        Rick Lindsley <ricklind@...ux.vnet.ibm.com>,
        David Howells <dhowells@...hat.com>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Carlos Maiolino <cmaiolino@...hat.com>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 1/7] kernfs: move revalidate to be near lookup

On Wed, 9 Jun 2021 at 10:49, Ian Kent <raven@...maw.net> wrote:
>
> While the dentry operation kernfs_dop_revalidate() is grouped with
> dentry type functions it also has a strong affinity to the inode
> operation ->lookup().
>
> It makes sense to locate this function near to kernfs_iop_lookup()
> because we will be adding VFS negative dentry caching to reduce path
> lookup overhead for non-existent paths.
>
> There's no functional change from this patch.
>
> Signed-off-by: Ian Kent <raven@...maw.net>

Reviewed-by: Miklos Szeredi <mszeredi@...hat.com>