From: Bart Van Assche <bart.vanassche@sandisk.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: <linux-block@vger.kernel.org>,
"Martin K . Petersen" <martin.petersen@oracle.com>,
James Bottomley <James.Bottomley@HansenPartnership.com>,
Bart Van Assche <bart.vanassche@sandisk.com>
Subject: [PATCH v2 0/5] Avoid that scsi-mq queue processing stalls
Date: Mon, 3 Apr 2017 16:22:23 -0700 [thread overview]
Message-ID: <20170403232228.11208-1-bart.vanassche@sandisk.com> (raw)
Hello Jens,
The five patches in this patch series fix the queue lockup I reported
last week on the linux-block mailing list. Please consider these patches
for kernel v4.11.
Thanks,
Bart.
Changes compared to v1 of this patch:
- Reworked scsi_restart_queues() such that it no longer takes the SCSI
host lock.
- Added two patches - one for exporting blk_mq_sched_restart_hctx() and
another one to make iterating with RCU over blk_mq_tag_set.tag_list safe.
Bart Van Assche (5):
block: Export blk_mq_sched_restart_hctx()
block: Make it safe to use RCU to iterate over blk_mq_tag_set.tag_list
blk-mq: Introduce blk_mq_ops.restart_hctx
scsi: Add scsi_restart_queues()
scsi: Ensure that scsi_run_queue() runs all hardware queues
block/blk-mq-sched.c | 22 ++++++++--------------
block/blk-mq-sched.h | 14 --------------
block/blk-mq.c | 6 ++++++
drivers/scsi/scsi_lib.c | 20 +++++++++++++++++---
include/linux/blk-mq.h | 8 ++++++++
include/linux/blkdev.h | 1 -
6 files changed, 39 insertions(+), 32 deletions(-)
--
2.12.0
next reply other threads:[~2017-04-03 23:22 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-03 23:22 Bart Van Assche [this message]
2017-04-03 23:22 ` [PATCH v2 1/5] blk-mq: Export blk_mq_sched_restart_hctx() Bart Van Assche
2017-04-04 6:40 ` Christoph Hellwig
2017-04-03 23:22 ` [PATCH v2 2/5] blk-mq: Make it safe to use RCU to iterate over blk_mq_tag_set.tag_list Bart Van Assche
2017-04-04 6:40 ` Christoph Hellwig
2017-04-04 15:55 ` Bart Van Assche
2017-04-03 23:22 ` [PATCH v2 3/5] blk-mq: Introduce blk_mq_ops.restart_hctx Bart Van Assche
2017-04-04 6:42 ` Christoph Hellwig
2017-04-05 20:41 ` Omar Sandoval
2017-04-05 20:51 ` Bart Van Assche
2017-04-05 20:54 ` Omar Sandoval
2017-04-03 23:22 ` [PATCH v2 4/5] scsi: Add scsi_restart_hctx() Bart Van Assche
2017-04-04 6:42 ` Christoph Hellwig
2017-04-04 15:56 ` Bart Van Assche
2017-04-05 6:20 ` Christoph Hellwig
2017-04-05 17:36 ` Bart Van Assche
2017-04-03 23:22 ` [PATCH v2 5/5] scsi: Ensure that scsi_run_queue() runs all hardware queues Bart Van Assche
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