Date: Wed, 25 May 2011 11:31:42 -0500 (CDT)
From: Christoph Lameter <cl@linux.com>
To: Eric Dumazet <eric.dumazet@gmail.com>
cc: Linus Torvalds <torvalds@linux-foundation.org>,
        James Morris <jmorris@namei.org>, Pekka Enberg <penberg@kernel.org>,
        linux-kernel@vger.kernel.org
Subject: Re: SLUB regression in current Linus
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On Wed, 25 May 2011, Eric Dumazet wrote:

> > We always fall back to the slow path in the debug case. So the tid update
> > is useless.
>
> tid change is updated anyway at the end of deactivate_slab()

That too is useless in the debug case since we already disable
interrupts and do not need tid based synchronization.

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