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

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Message-ID: <20110718232114.GK11013@ZenIV.linux.org.uk>
Date:	Tue, 19 Jul 2011 00:21:14 +0100
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Hugh Dickins <hughd@...gle.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Nick Piggin <npiggin@...nel.dk>, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH] vfs: fix race in rcu lookup of pruned dentry

On Tue, Jul 19, 2011 at 12:17:38AM +0100, Al Viro wrote:
> On Mon, Jul 18, 2011 at 03:43:29PM -0700, Hugh Dickins wrote:
> > Yes, that looks like THE right fix to me, making others irrelevant.
> > But I haven't tested it either, won't begin to do so until tonight.
> > And I fear I won't notice if there's any silly little bug in there,
> > which forces every fast RCU lookup to go the slow way instead!
> > 
> > Inlined for the benefit of wider scrutiny:
> 
> Looks sane.  Applied.  I'll wait with pull request until you test it,
> but that looks right.

Linus, are you OK with me slapping your s-o-b on it?
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