linux-kernel - Re: [PATCH] block: add timer on blkdev_dequeue_request() not elv_next

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Message-ID: <20081030075855.GO31673@kernel.dk>
Date:	Thu, 30 Oct 2008 08:58:56 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	James Bottomley <James.Bottomley@...senPartnership.com>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	IDE/ATA development list <linux-ide@...r.kernel.org>
Subject: Re: [PATCH] block: add timer on blkdev_dequeue_request() not elv_next_request()

On Thu, Oct 30 2008, Tejun Heo wrote:
> Jens Axboe wrote:
> > That's actually a pretty dumb error, I'm surprised it hasn't reared its
> > ugly face in more ways. Presumably because the timeout is usually so
> > long, that we'll get to actually issuing and completing it within the
> > normal timeout anyway.
> 
> Heh... it showed its ugly face in many different ways while I was
> playing with PMP connected via a very long eSATA cable.

Ah :-)

If we had it wired up for eg the old IDE drivers, it would have shown up
quite quickly as well I think.

-- 
Jens Axboe

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