From: Al Viro <viro@ZenIV.linux.org.uk>
To: Josef Bacik <josef@redhat.com>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
chris.mason@oracle.com, hch@lst.de
Subject: Re: [PATCH] Introduce freeze_super and thaw_super for the fsfreeze ioctl
Date: Tue, 23 Mar 2010 15:12:46 +0000 [thread overview]
Message-ID: <20100323151246.GJ30031@ZenIV.linux.org.uk> (raw)
In-Reply-To: <20100323150923.GI30031@ZenIV.linux.org.uk>
On Tue, Mar 23, 2010 at 03:09:23PM +0000, Al Viro wrote:
> On Tue, Mar 23, 2010 at 11:03:01AM -0400, Josef Bacik wrote:
> > > sb is an active reference
> > >
> >
> > I don't understand how this is an active reference? We are talking about
> > s_active right?
>
> It's an opened file, for crying out loud! If there is anything that makes
> sure that superblock will stay alive, that is it...
>
> And lose the "locked" argument, please. The sane solution is to make
> get_active_super() return it unlocked and have your freeze_bdev() simply
> grab s_umount. Unconditionally. I'll do the first part in #untested in
> a minute or so (and make it grab s_umount in the current variant of code in
> fs/block_dev.c); then your patch would shift taking s_umount down into
> freeze_super().
Done. See the tree on hera (or wait a few until it propagates to git.k.o)
next prev parent reply other threads:[~2010-03-23 15:12 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-03-23 14:22 [PATCH] Introduce freeze_super and thaw_super for the fsfreeze ioctl Josef Bacik
2010-03-23 14:28 ` Al Viro
2010-03-23 14:34 ` Josef Bacik
2010-03-23 14:48 ` Al Viro
2010-03-23 15:03 ` Josef Bacik
2010-03-23 15:09 ` Al Viro
2010-03-23 15:12 ` Al Viro [this message]
2010-03-23 15:15 ` Al Viro
2010-03-23 22:31 ` Nigel Cunningham
2010-03-23 23:18 ` Al Viro
2010-03-23 23:47 ` Al Viro
2010-03-23 23:52 ` Nigel Cunningham
2010-03-23 23:55 ` Nigel Cunningham
2010-03-24 0:21 ` Al Viro
2010-03-24 0:25 ` Nigel Cunningham
2010-03-24 0:03 ` Nigel Cunningham
2010-03-23 18:19 ` Sunil Mushran
2010-03-23 22:25 ` Nigel Cunningham
2010-03-24 1:17 ` Josef Bacik
2010-03-24 5:16 ` Nigel Cunningham
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