From: Bart Van Assche <Bart.VanAssche@wdc.com>
To: "ming.lei@redhat.com" <ming.lei@redhat.com>
Cc: "linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
"hch@infradead.org" <hch@infradead.org>,
"snitzer@redhat.com" <snitzer@redhat.com>,
"martin.petersen@oracle.com" <martin.petersen@oracle.com>,
"axboe@kernel.dk" <axboe@kernel.dk>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"jejb@linux.vnet.ibm.com" <jejb@linux.vnet.ibm.com>,
"loberman@redhat.com" <loberman@redhat.com>,
"dm-devel@redhat.com" <dm-devel@redhat.com>
Subject: Re: [PATCH V3] blk-mq: introduce BLK_STS_DEV_RESOURCE
Date: Tue, 30 Jan 2018 01:11:22 +0000 [thread overview]
Message-ID: <1517274681.2687.68.camel@wdc.com> (raw)
In-Reply-To: <20180130010701.GC17176@ming.t460p>
On Tue, 2018-01-30 at 09:07 +0800, Ming Lei wrote:
> On Mon, Jan 29, 2018 at 04:48:31PM +0000, Bart Van Assche wrote:
> > - It is easy to fix this race inside the block layer, namely by using
> > call_rcu() inside the blk_mq_delay_run_hw_queue() implementation to
> > postpone the queue rerunning until after the request has been added back to
> > the dispatch list.
>
> It is just easy to say, can you cook a patch and fix all drivers first?
Please reread what I wrote. I proposed to change the blk_mq_delay_run_hw_queue()
IMPLEMENTATION such that the callers do not have to be modified.
> [ ... ] Later, you admitted you understood the patch wrong. [ ... ]
That's nonsense. I never wrote that.
Bart.
next prev parent reply other threads:[~2018-01-30 1:11 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-23 16:16 [PATCH V3] blk-mq: introduce BLK_STS_DEV_RESOURCE Ming Lei
2018-01-23 16:20 ` Mike Snitzer
2018-01-23 16:24 ` Bart Van Assche
2018-01-23 16:37 ` Ming Lei
2018-01-23 16:57 ` Bart Van Assche
2018-01-24 3:31 ` Ming Lei
2018-01-27 19:09 ` Mike Snitzer
2018-01-27 22:12 ` Bart Van Assche
2018-01-27 23:41 ` Ming Lei
2018-01-29 16:48 ` Bart Van Assche
2018-01-30 1:07 ` Ming Lei
2018-01-30 1:11 ` Bart Van Assche [this message]
2018-01-30 3:31 ` Ming Lei
2018-01-30 3:37 ` Bart Van Assche
2018-01-30 3:42 ` Ming Lei
2018-01-28 0:23 ` Mike Snitzer
2018-01-28 0:54 ` Bart Van Assche
2018-01-28 2:03 ` Mike Snitzer
2018-01-28 3:00 ` Bart Van Assche
2018-01-28 4:58 ` Mike Snitzer
2018-01-28 16:57 ` Bart Van Assche
2018-01-28 17:26 ` Laurence Oberman
2018-01-28 11:39 ` Ming Lei
2018-01-28 17:03 ` Bart Van Assche
2018-01-29 2:14 ` Ming Lei
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