linux-kernel - Re: [PATCH v6 3/7] kernfs: use VFS negative dentry caching

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Message-ID: <7c77820b6e8774fbe5e3e99e81e1ec5ad4f41f33.camel@themaw.net>
Date:   Sun, 13 Jun 2021 09:16:53 +0800
From:   Ian Kent <raven@...maw.net>
To:     Al Viro <viro@...iv.linux.org.uk>
Cc:     Miklos Szeredi <miklos@...redi.hu>,
        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>,
        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 3/7] kernfs: use VFS negative dentry caching

On Sat, 2021-06-12 at 01:48 +0000, Al Viro wrote:
> On Sat, Jun 12, 2021 at 08:47:17AM +0800, Ian Kent wrote:
> 
> > > Perhaps add a note about this being dependent on parent of a
> > > negative
> > > dentry never changing.
> > 
> > Which of course it it can change, at any time.
> 
> What?

For some reason I thought Miklos was talking about the revision
of the parent not changing but that's not what he's saying.

Ian