Re: [PATCH] Introduce freeze_super and thaw_super for the fsfreezeioctl

[Al Viro]

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)
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