From: Christoph Hellwig <hch@lst.de>
To: Ming Lei <ming.lei@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>, Keith Busch <keith.busch@intel.com>,
Christoph Hellwig <hch@lst.de>, Sagi Grimberg <sagi@grimberg.me>,
linux-nvme@lists.infradead.org, Zhang Yi <yizhan@redhat.com>,
linux-block@vger.kernel.org,
Johannes Thumshirn <jthumshirn@suse.de>,
stable@vger.kernel.org
Subject: Re: [PATCH v2 1/3] nvme: use blk_mq_start_hw_queues() in nvme_kill_queues()
Date: Sun, 21 May 2017 08:20:02 +0200 [thread overview]
Message-ID: <20170521062002.GB12287@lst.de> (raw)
In-Reply-To: <20170520035605.21785-2-ming.lei@redhat.com>
> index d5e0906262ea..ce0d96913ee6 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2437,7 +2437,13 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl)
> revalidate_disk(ns->disk);
> blk_set_queue_dying(ns->queue);
> blk_mq_abort_requeue_list(ns->queue);
> - blk_mq_start_stopped_hw_queues(ns->queue, true);
> +
> + /*
> + * We have to force to start queues for avoiding hang
> + * forever, and we have to make sure that queues won't
> + * be stopped forever from now on.
> + */
/*
* Forcibly start all queues to avoid having stuck requests.
* Note: We must make sure to not stop the queues from
* now until the final removal.
*/
Otherwise this looks good to me:
Reviewed-by: Christoph Hellwig <hch@lst.de>
WARNING: multiple messages have this Message-ID (diff)
From: hch@lst.de (Christoph Hellwig)
Subject: [PATCH v2 1/3] nvme: use blk_mq_start_hw_queues() in nvme_kill_queues()
Date: Sun, 21 May 2017 08:20:02 +0200 [thread overview]
Message-ID: <20170521062002.GB12287@lst.de> (raw)
In-Reply-To: <20170520035605.21785-2-ming.lei@redhat.com>
> index d5e0906262ea..ce0d96913ee6 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -2437,7 +2437,13 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl)
> revalidate_disk(ns->disk);
> blk_set_queue_dying(ns->queue);
> blk_mq_abort_requeue_list(ns->queue);
> - blk_mq_start_stopped_hw_queues(ns->queue, true);
> +
> + /*
> + * We have to force to start queues for avoiding hang
> + * forever, and we have to make sure that queues won't
> + * be stopped forever from now on.
> + */
/*
* Forcibly start all queues to avoid having stuck requests.
* Note: We must make sure to not stop the queues from
* now until the final removal.
*/
Otherwise this looks good to me:
Reviewed-by: Christoph Hellwig <hch at lst.de>
next prev parent reply other threads:[~2017-05-21 6:20 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-20 3:56 [PATCH v2 0/3] nvme: fix hang in path of removing disk Ming Lei
2017-05-20 3:56 ` Ming Lei
2017-05-20 3:56 ` [PATCH v2 1/3] nvme: use blk_mq_start_hw_queues() in nvme_kill_queues() Ming Lei
2017-05-20 3:56 ` Ming Lei
2017-05-21 6:20 ` Christoph Hellwig [this message]
2017-05-21 6:20 ` Christoph Hellwig
2017-05-22 1:35 ` Ming Lei
2017-05-22 1:35 ` Ming Lei
2017-05-22 12:51 ` Christoph Hellwig
2017-05-22 12:51 ` Christoph Hellwig
2017-05-22 14:49 ` Ming Lei
2017-05-22 14:49 ` Ming Lei
2017-05-22 5:35 ` Keith Busch
2017-05-22 5:35 ` Keith Busch
2017-05-22 7:41 ` Johannes Thumshirn
2017-05-22 7:41 ` Johannes Thumshirn
2017-05-20 3:56 ` [PATCH v2 2/3] nvme: avoid to use blk_mq_abort_requeue_list() Ming Lei
2017-05-20 3:56 ` Ming Lei
2017-05-20 5:34 ` Ming Lei
2017-05-20 5:34 ` Ming Lei
2017-05-21 6:22 ` Christoph Hellwig
2017-05-21 6:22 ` Christoph Hellwig
2017-05-22 7:42 ` Johannes Thumshirn
2017-05-22 7:42 ` Johannes Thumshirn
2017-05-22 5:35 ` Keith Busch
2017-05-22 5:35 ` Keith Busch
2017-05-20 3:56 ` [PATCH v2 3/3] blk-mq: remove blk_mq_abort_requeue_list() Ming Lei
2017-05-20 3:56 ` Ming Lei
2017-05-21 6:22 ` Christoph Hellwig
2017-05-21 6:22 ` Christoph Hellwig
2017-05-22 5:36 ` Keith Busch
2017-05-22 5:36 ` Keith Busch
2017-05-22 7:43 ` Johannes Thumshirn
2017-05-22 7:43 ` Johannes Thumshirn
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170521062002.GB12287@lst.de \
--to=hch@lst.de \
--cc=axboe@kernel.dk \
--cc=jthumshirn@suse.de \
--cc=keith.busch@intel.com \
--cc=linux-block@vger.kernel.org \
--cc=linux-nvme@lists.infradead.org \
--cc=ming.lei@redhat.com \
--cc=sagi@grimberg.me \
--cc=stable@vger.kernel.org \
--cc=yizhan@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.