linux-kernel - Re: [GIT PULL] Ceph fixes for 5.1-rc7

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Message-ID: <20190426171115.GA2217@ZenIV.linux.org.uk>
Date:   Fri, 26 Apr 2019 18:11:15 +0100
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Jeff Layton <jlayton@...nel.org>,
        Ilya Dryomov <idryomov@...il.com>, ceph-devel@...r.kernel.org,
        Linux List Kernel Mailing <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] Ceph fixes for 5.1-rc7

On Fri, Apr 26, 2019 at 10:08:48AM -0700, Linus Torvalds wrote:
> On Fri, Apr 26, 2019 at 10:01 AM Al Viro <viro@...iv.linux.org.uk> wrote:
> >
> > What I don't understand is why would anyone want to mess with
> > name snapshots for dentry_path() lookalikes...
> 
> Talking about dentry_path()... Shouldn't the ceph path walking code
> also check the mount_lock sequence to make sure the path is actually
> stable?
> 
> Maybe it doesn't matter.

They want it relative to fs root - after all, server doesn't know or
care what's mounted where on client...