From: Sagi Grimberg <sagi@grimberg.me>
To: Jens Axboe <axboe@kernel.dk>,
linux-block@vger.kernel.org, linux-nvme@lists.infradead.org
Cc: Christoph Hellwig <hch@lst.de>, Keith Busch <keith.busch@intel.com>
Subject: [PATCH 6/8] mtip32xx: quiesce request queues to make sure no submissions are inflight
Date: Tue, 4 Jul 2017 10:55:10 +0300 [thread overview]
Message-ID: <1499154912-10420-7-git-send-email-sagi@grimberg.me> (raw)
In-Reply-To: <1499154912-10420-1-git-send-email-sagi@grimberg.me>
Unlike blk_mq_stop_hw_queues, blk_mq_quiesce_queue respects the
submission path rcu grace. quiesce the queue before iterating
on live tags, or performing device io quiescing.
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
---
drivers/block/mtip32xx/mtip32xx.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/block/mtip32xx/mtip32xx.c b/drivers/block/mtip32xx/mtip32xx.c
index 61b046f256ca..69a62aeace2a 100644
--- a/drivers/block/mtip32xx/mtip32xx.c
+++ b/drivers/block/mtip32xx/mtip32xx.c
@@ -950,7 +950,7 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)
unsigned long to;
bool active = true;
- blk_mq_stop_hw_queues(port->dd->queue);
+ blk_mq_quiesce_queue(port->dd->queue);
to = jiffies + msecs_to_jiffies(timeout);
do {
@@ -970,10 +970,10 @@ static int mtip_quiesce_io(struct mtip_port *port, unsigned long timeout)
break;
} while (time_before(jiffies, to));
- blk_mq_start_stopped_hw_queues(port->dd->queue, true);
+ blk_mq_unquiesce_queue(port->dd->queue);
return active ? -EBUSY : 0;
err_fault:
- blk_mq_start_stopped_hw_queues(port->dd->queue, true);
+ blk_mq_unquiesce_queue(port->dd->queue);
return -EFAULT;
}
@@ -3995,7 +3995,7 @@ static int mtip_block_remove(struct driver_data *dd)
dd->disk->disk_name);
blk_freeze_queue_start(dd->queue);
- blk_mq_stop_hw_queues(dd->queue);
+ blk_mq_quiesce_queue(dd->queue);
blk_mq_tagset_busy_iter(&dd->tags, mtip_no_dev_cleanup, dd);
/*
--
2.7.4
next prev parent reply other threads:[~2017-07-04 7:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-04 7:55 [PATCH 0/8] correct quiescing in several block drivers Sagi Grimberg
2017-07-04 7:55 ` [PATCH 1/8] nvme-rdma: quiesce/unquiesce admin_q instead of start/stop its hw queues Sagi Grimberg
2017-07-04 8:15 ` Ming Lei
2017-07-04 8:59 ` Sagi Grimberg
2017-07-04 9:07 ` Sagi Grimberg
2017-07-04 12:41 ` Ming Lei
2017-07-04 15:35 ` Sagi Grimberg
2017-07-04 7:55 ` [PATCH 2/8] nvme-fc: " Sagi Grimberg
2017-07-04 8:18 ` Ming Lei
2017-07-04 7:55 ` [PATCH 3/8] nvme-loop: quiesce admin_q instead of stopping " Sagi Grimberg
2017-07-04 8:23 ` Ming Lei
2017-07-04 9:24 ` Sagi Grimberg
2017-07-04 10:38 ` Ming Lei
2017-07-04 7:55 ` [PATCH 4/8] nvme-pci: quiesce/unquiesce admin_q instead of start/stop its " Sagi Grimberg
2017-07-04 8:26 ` Ming Lei
2017-07-04 7:55 ` [PATCH 5/8] nbd: quiesce request queues to make sure no submissions are inflight Sagi Grimberg
2017-07-04 8:28 ` Ming Lei
2017-07-04 7:55 ` Sagi Grimberg [this message]
2017-07-04 22:32 ` [PATCH 6/8] mtip32xx: " Ming Lei
2017-07-05 6:34 ` Sagi Grimberg
2017-07-04 7:55 ` [PATCH 7/8] virtio_blk: quiesce/unquiesce live IO when entering PM states Sagi Grimberg
2017-07-04 8:41 ` Ming Lei
2017-07-04 21:39 ` Michael S. Tsirkin
2017-07-04 7:55 ` [PATCH 8/8] xen-blockfront: quiesce IO before device removal Sagi Grimberg
2017-07-04 22:19 ` Ming Lei
2017-07-05 6:29 ` Sagi Grimberg
2017-07-05 22:56 ` Christoph Hellwig
2017-07-06 6:52 ` Sagi Grimberg
2017-07-04 8:12 ` [PATCH 0/8] correct quiescing in several block drivers Ming Lei
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