linux-kernel - Re: [RFC][PATCH] spinlock: Kill spin_unlock

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Message-ID: <20110107210152.GG7355@mtj.dyndns.org>
Date:	Fri, 7 Jan 2011 16:01:52 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc:	Nick Piggin <npiggin@...nel.dk>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Chris Mason <chris.mason@...cle.com>,
	Frank Rowand <frank.rowand@...sony.com>,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mike Galbraith <efault@....de>,
	Oleg Nesterov <oleg@...hat.com>, Paul Turner <pjt@...gle.com>,
	Jens Axboe <axboe@...nel.dk>,
	Yong Zhang <yong.zhang0@...il.com>,
	linux-kernel@...r.kernel.org,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	Linux-Arch <linux-arch@...r.kernel.org>,
	Jeff Garzik <jeff@...zik.org>
Subject: Re: [RFC][PATCH] spinlock: Kill spin_unlock_wait()

Hello,

On Thu, Jan 06, 2011 at 07:26:35PM +0100, Peter Zijlstra wrote:
> Jeff, Tejun, could you look at the ata-eh thing, then I'll put sorting
> through the futex thing on my todo list.

Hmm... I think the ->eng_timeout path is already dead.  We no longer
have any in-kernel implementation, so killing spin_unlock_wait()
should be fine.  I'll follow up with removal of the unused callback.

Thanks.

-- 
tejun
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