linux-kernel - Re: [PATCH] blk-exec-assign-endio-before-queue-dead-check

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Message-ID: <CAOS58YNgatwyCApNg=sSNAzOSPR-QSqQwnYy562QcaUTcz8aOg@mail.gmail.com>
Date:	Thu, 7 Jun 2012 15:16:20 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Muthu Kumar <muthu.lkml@...il.com>
Cc:	Jens Axboe <axboe@...nel.dk>,
	James.Bottomley@...senpartnership.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] blk-exec-assign-endio-before-queue-dead-check

Hello, again.

On Thu, Jun 7, 2012 at 3:13 PM, Muthu Kumar <muthu.lkml@...il.com> wrote:
> blk-exec.c: In blk_execute_rq_nowait(), if the queue is dead, call to
> done() routine is not made. That will result in blk_execute_rq() stuck
> in wait_for_completion(). Avoid this by initializing rq->end_io to
> done() routine before we check for dead queue.

Sorry to be nit-picky but Jens would appreciate proper subject and it
would also be nice to mention the locking change (or even separate
that into a separate patch).

Thanks.

-- 
tejun
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