linux-kernel - Re: [PATCH] block: strip out locking optimization in put_io

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Message-ID: <20120214163955.GO12117@google.com>
Date:	Tue, 14 Feb 2012 08:39:55 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Shaohua Li <shli@...nel.org>
Cc:	Jens Axboe <axboe@...nel.dk>, Vivek Goyal <vgoyal@...hat.com>,
	lkml <linux-kernel@...r.kernel.org>,
	Knut Petersen <Knut_Petersen@...nline.de>, mroos@...ux.ee,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] block: strip out locking optimization in
 put_io_context()

Hello,

On Tue, Feb 14, 2012 at 10:36:36AM +0800, Shaohua Li wrote:
> 2012/2/14 Tejun Heo <tj@...nel.org>:
> > Now that we have proper request draining on queue exit, we can
> > probably move ioc clearing and other operations to blk_cleanup_queue()
> > and then apply RCU, but that's for another merge window.
>
> This fixed the regression. Thanks!

Ah... that's a good news.  I'll split up the patches and post them.

Thank you very much for the bisection and testing all the different
patches!

-- 
tejun
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