linux-kernel - Re: [PATCH 2/2] __down_common: use signal_pending

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Message-ID: <20080604173633.GI3549@parisc-linux.org>
Date:	Wed, 4 Jun 2008 11:36:34 -0600
From:	Matthew Wilcox <matthew@....cx>
To:	Oleg Nesterov <oleg@...sign.ru>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Dmitry Adamushko <dmitry.adamushko@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Roland McGrath <roland@...hat.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] __down_common: use signal_pending_state()

On Wed, Jun 04, 2008 at 09:09:06PM +0400, Oleg Nesterov wrote:
> Cleanup. __down_common() can use the new signal_pending_state() helper.

This is a bad optimisation.  __down_common gets inlined and the constant
'state' versions are optimised away for the versions which don't apply.

NAK this patch.

-- 
Intel are signing my paycheques ... these opinions are still mine
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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