From: Jens Axboe <axboe@kernel.dk>
To: Christoph Hellwig <hch@lst.de>, Ming Lei <tom.leiming@gmail.com>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
stable <stable@vger.kernel.org>
Subject: Re: [PATCH] block: mq flush: fix race between IPI handler and mq flush worker
Date: Tue, 27 May 2014 12:38:15 -0600 [thread overview]
Message-ID: <5384DB97.70606@kernel.dk> (raw)
In-Reply-To: <20140527181305.GA7975@lst.de>
On 2014-05-27 12:13, Christoph Hellwig wrote:
> Here is my counter proposal that requeues via two lists and a work struct
> in the request_queue. I've also tested it with scsi-mq.
>
I like this, moves the state out of the request. But how about we
consolidate the two requeue requests lists, and just mark the request as
needing head insertion instead? Just add a cmd_flags flag,
REQ_REQUEUE_HEAD or something.
--
Jens Axboe
next prev parent reply other threads:[~2014-05-27 18:38 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-19 15:05 [PATCH] block: mq flush: fix race between IPI handler and mq flush worker Ming Lei
2014-05-19 15:18 ` Christoph Hellwig
2014-05-19 15:34 ` Ming Lei
2014-05-20 3:20 ` Ming Lei
2014-05-20 15:23 ` Christoph Hellwig
2014-05-21 5:16 ` Ming Lei
2014-05-21 5:36 ` Christoph Hellwig
2014-05-21 6:48 ` Ming Lei
2014-05-27 18:13 ` Christoph Hellwig
2014-05-27 18:38 ` Jens Axboe [this message]
2014-05-27 18:53 ` Christoph Hellwig
2014-05-27 18:54 ` Jens Axboe
2014-05-27 19:15 ` Christoph Hellwig
2014-05-27 19:17 ` Jens Axboe
2014-05-27 19:21 ` Christoph Hellwig
2014-05-27 19:35 ` Jens Axboe
2014-05-28 1:34 ` Ming Lei
2014-05-28 2:26 ` Jens Axboe
2014-05-28 2:31 ` Jens Axboe
2014-05-28 5:22 ` Christoph Hellwig
2014-05-28 14:08 ` Jens Axboe
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