linux-kernel - Re: [PATCH UPDATED] block: In blk_execute_rq_nowait, init rq->end

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Date:	Mon, 11 Jun 2012 14:23:23 -0700
From:	Muthu Kumar <muthu.lkml@...il.com>
To:	Bart Van Assche <bvanassche@....org>
Cc:	Jens Axboe <axboe@...nel.dk>, Tejun Heo <tj@...nel.org>,
	Jej B <James.Bottomley@...senpartnership.com>,
	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [PATCH UPDATED] block: In blk_execute_rq_nowait, init rq->end_io
 before checking for dead queue.

On Mon, Jun 11, 2012 at 10:33 AM, Muthu Kumar <muthu.lkml@...il.com> wrote:
> On Sun, Jun 10, 2012 at 10:40 AM, Bart Van Assche <bvanassche@....org> wrote:
>> On 06/09/12 23:57, Muthu Kumar wrote:
>>
>>> Locking change is the one you posted already (the link above). Anyway,
>>> I have the attached patch *including* the locking change. Original
>>> mail has attachment without locking change. Please use whatever you
>>> need.
>>
>>
>> While we are at it ... the rq->rq_disk and rq->end_io assignments can be
>> performed safely before the spinlock is taken, isn't it ?
>>
>
> Yes.. that spinlock is to protect the q.
>

Attached patch with assignment performed before taking the spinlock.




>
>> Bart.

Download attachment "blk-exec-assign-endio-to-bart-v2.patch" of type "application/octet-stream" (705 bytes)