From: Ming Lei <ming.lei@redhat.com>
To: Oleksandr Natalenko <oleksandr@natalenko.name>
Cc: Jens Axboe <axboe@fb.com>,
linux-block@vger.kernel.org,
Christoph Hellwig <hch@infradead.org>,
Bart Van Assche <bart.vanassche@sandisk.com>,
linux-scsi@vger.kernel.org,
"Martin K . Petersen" <martin.petersen@oracle.com>,
"James E . J . Bottomley" <jejb@linux.vnet.ibm.com>
Subject: Re: [PATCH 0/9] block/scsi: safe SCSI quiescing
Date: Fri, 1 Sep 2017 01:38:34 +0800 [thread overview]
Message-ID: <20170831173833.GC5928@ming.t460p> (raw)
In-Reply-To: <1576539.niWZoWEnd8@natalenko.name>
On Thu, Aug 31, 2017 at 07:34:06PM +0200, Oleksandr Natalenko wrote:
> Since I'm in CC, does this series aim to replace 2 patches I've tested before:
>
> blk-mq: add requests in the tail of hctx->dispatch
> blk-mq: align to legacy's implementation of blk_execute_rq
>
> ?
Yeah, this solution is more generic, and the old one in above
two patches may run into the same deadlock inevitably.
Oleksandr, could you test this patchset and provide the feedback?
BTW, it fixes the I/O hang in my raid10 test, but I just write
'devices' to pm_test.
Thanks!
--
Ming
next prev parent reply other threads:[~2017-08-31 17:38 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-31 17:27 [PATCH 0/9] block/scsi: safe SCSI quiescing Ming Lei
2017-08-31 17:27 ` [PATCH 1/9] percpu-refcount: introduce percpu_ref_is_dead() Ming Lei
2017-08-31 23:07 ` Bart Van Assche
2017-08-31 23:07 ` Bart Van Assche
2017-09-01 3:49 ` Ming Lei
2017-09-01 13:59 ` Tejun Heo
2017-09-01 15:44 ` Bart Van Assche
2017-09-01 15:44 ` Bart Van Assche
2017-09-01 16:05 ` Ming Lei
2017-08-31 17:27 ` [PATCH 2/9] blk-mq: rename blk_mq_unfreeze_queue as blk_unfreeze_queue Ming Lei
2017-08-31 17:27 ` [PATCH 3/9] blk-mq: rename blk_mq_freeze_queue as blk_freeze_queue Ming Lei
2017-08-31 22:35 ` Bart Van Assche
2017-08-31 22:35 ` Bart Van Assche
2017-09-01 3:51 ` Ming Lei
2017-08-31 17:27 ` [PATCH 4/9] blk-mq: only run hw queues for blk-mq Ming Lei
2017-09-01 8:16 ` Johannes Thumshirn
2017-09-01 8:16 ` Johannes Thumshirn
2017-09-01 12:33 ` Ming Lei
2017-09-01 12:44 ` Johannes Thumshirn
2017-09-01 12:44 ` Johannes Thumshirn
2017-08-31 17:27 ` [PATCH 5/9] block: introduce blk_drain_queue() Ming Lei
2017-08-31 22:34 ` Bart Van Assche
2017-08-31 22:34 ` Bart Van Assche
2017-09-01 3:52 ` Ming Lei
2017-08-31 17:27 ` [PATCH 6/9] blk-mq: rename blk_mq_freeze_queue_wait as blk_freeze_queue_wait Ming Lei
2017-08-31 22:37 ` Bart Van Assche
2017-08-31 22:37 ` Bart Van Assche
2017-09-01 3:53 ` Ming Lei
2017-08-31 17:27 ` [PATCH 7/9] block: tracking request allocation with q_usage_counter Ming Lei
2017-08-31 17:27 ` [PATCH 8/9] block: allow to allocate req with REQF_PREEMPT when queue is frozen Ming Lei
2017-08-31 22:50 ` Bart Van Assche
2017-08-31 22:50 ` Bart Van Assche
2017-09-01 3:55 ` Ming Lei
2017-09-01 15:43 ` Bart Van Assche
2017-09-01 15:43 ` Bart Van Assche
2017-09-01 16:56 ` Ming Lei
2017-08-31 17:27 ` [PATCH 9/9] SCSI: freeze block queue when SCSI device is put into quiesce Ming Lei
2017-08-31 17:34 ` [PATCH 0/9] block/scsi: safe SCSI quiescing Oleksandr Natalenko
2017-08-31 17:34 ` Oleksandr Natalenko
2017-08-31 17:38 ` Ming Lei [this message]
2017-08-31 18:31 ` Oleksandr Natalenko
2017-08-31 18:31 ` Oleksandr Natalenko
2017-09-01 3:45 ` Ming Lei
2017-09-01 6:24 ` oleksandr
2017-09-01 6:30 ` Ming Lei
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