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

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Message-ID: <CAFR8uecF0LwbV8FvYob5m34sVbKqafrNoYOrcRUQCEOymGnYRA@mail.gmail.com>
Date:	Mon, 11 Jun 2012 10:33:45 -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 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.


> Bart.
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