Re: [PATCH] vfs: fix race in rcu lookup of pruned dentry

From: Al Viro
Date: Tue Jul 19 2011 - 21:40:25 EST

On Wed, Jul 20, 2011 at 10:47:21AM +1000, NeilBrown wrote:
> > >
> > > Kudos to neilb for spotting the pointless check, BTW; and no, his theory
> > > that it might be needed since we could race with umount() is wrong - due to
> > > vfsmount_lock being held.
> Thanks.. but that patch seems to introduce an unused variable "seq".
> NeilBrown

Grr... I can amend and push again, of course, but I've no idea if Linus
has already pulled into his tree ;-/ Still not there in tree on hera,
but that's not saying much. Linus?
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