From: Daniel Wagner <dwagner@suse.de> To: linux-nvme@lists.infradead.org Cc: linux-kernel@vger.kernel.org, James Smart <james.smart@broadcom.com>, Keith Busch <kbusch@kernel.org>, Ming Lei <ming.lei@redhat.com>, Sagi Grimberg <sagi@grimberg.me>, Hannes Reinecke <hare@suse.de>, Wen Xiong <wenxiong@us.ibm.com>, Himanshu Madhani <himanshu.madhani@oracle.com>, James Smart <jsmart2021@gmail.com>, Daniel Wagner <dwagner@suse.de> Subject: [PATCH v6 3/3] nvme-fc: Remove freeze/unfreeze around update_nr_hw_queues Date: Mon, 23 Aug 2021 13:23:51 +0200 [thread overview] Message-ID: <20210823112351.82899-4-dwagner@suse.de> (raw) In-Reply-To: <20210823112351.82899-1-dwagner@suse.de> From: James Smart <jsmart2021@gmail.com> Remove the freeze/unfreeze around changes to the number of hardware queues. Study and retest has indicated there are no ios that can be active at this point so there is nothing to freeze. This patch primarily reverts 883837ed0f1f "nvme-fc: wait for queues to freeze before calling update_hr_hw_queues". It's not an exact revert as it leaves the adjusting of hw queues only if the count changes. Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Daniel Wagner <dwagner@suse.de> --- drivers/nvme/host/fc.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 48aaa753be44..b71d0c2d4d31 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -2957,9 +2957,7 @@ nvme_fc_recreate_io_queues(struct nvme_fc_ctrl *ctrl) dev_info(ctrl->ctrl.device, "reconnect: revising io queue count from %d to %d\n", prior_ioq_cnt, nr_io_queues); - nvme_wait_freeze(&ctrl->ctrl); blk_mq_update_nr_hw_queues(&ctrl->tag_set, nr_io_queues); - nvme_unfreeze(&ctrl->ctrl); } ret = nvme_fc_create_hw_io_queues(ctrl, ctrl->ctrl.sqsize + 1); -- 2.29.2
WARNING: multiple messages have this Message-ID (diff)
From: Daniel Wagner <dwagner@suse.de> To: linux-nvme@lists.infradead.org Cc: linux-kernel@vger.kernel.org, James Smart <james.smart@broadcom.com>, Keith Busch <kbusch@kernel.org>, Ming Lei <ming.lei@redhat.com>, Sagi Grimberg <sagi@grimberg.me>, Hannes Reinecke <hare@suse.de>, Wen Xiong <wenxiong@us.ibm.com>, Himanshu Madhani <himanshu.madhani@oracle.com>, James Smart <jsmart2021@gmail.com>, Daniel Wagner <dwagner@suse.de> Subject: [PATCH v6 3/3] nvme-fc: Remove freeze/unfreeze around update_nr_hw_queues Date: Mon, 23 Aug 2021 13:23:51 +0200 [thread overview] Message-ID: <20210823112351.82899-4-dwagner@suse.de> (raw) In-Reply-To: <20210823112351.82899-1-dwagner@suse.de> From: James Smart <jsmart2021@gmail.com> Remove the freeze/unfreeze around changes to the number of hardware queues. Study and retest has indicated there are no ios that can be active at this point so there is nothing to freeze. This patch primarily reverts 883837ed0f1f "nvme-fc: wait for queues to freeze before calling update_hr_hw_queues". It's not an exact revert as it leaves the adjusting of hw queues only if the count changes. Signed-off-by: James Smart <jsmart2021@gmail.com> Signed-off-by: Daniel Wagner <dwagner@suse.de> --- drivers/nvme/host/fc.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 48aaa753be44..b71d0c2d4d31 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -2957,9 +2957,7 @@ nvme_fc_recreate_io_queues(struct nvme_fc_ctrl *ctrl) dev_info(ctrl->ctrl.device, "reconnect: revising io queue count from %d to %d\n", prior_ioq_cnt, nr_io_queues); - nvme_wait_freeze(&ctrl->ctrl); blk_mq_update_nr_hw_queues(&ctrl->tag_set, nr_io_queues); - nvme_unfreeze(&ctrl->ctrl); } ret = nvme_fc_create_hw_io_queues(ctrl, ctrl->ctrl.sqsize + 1); -- 2.29.2 _______________________________________________ Linux-nvme mailing list Linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2021-08-23 11:24 UTC|newest] Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-23 11:23 [PATCH v6 0/3] Handle update hardware queues and queue freeze more carefully Daniel Wagner 2021-08-23 11:23 ` Daniel Wagner 2021-08-23 11:23 ` [PATCH v6 1/3] nvme-fc: Update hardware queues before using them Daniel Wagner 2021-08-23 11:23 ` Daniel Wagner 2021-08-23 11:23 ` [PATCH v6 2/3] nvme-fc: avoid race between time out and tear down Daniel Wagner 2021-08-23 11:23 ` Daniel Wagner 2021-08-23 11:23 ` Daniel Wagner [this message] 2021-08-23 11:23 ` [PATCH v6 3/3] nvme-fc: Remove freeze/unfreeze around update_nr_hw_queues Daniel Wagner 2021-08-24 20:38 ` Sagi Grimberg 2021-08-24 20:38 ` Sagi Grimberg 2021-08-25 13:04 ` Daniel Wagner 2021-08-25 13:04 ` Daniel Wagner 2021-08-25 16:03 ` James Smart 2021-08-25 16:03 ` James Smart
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=20210823112351.82899-4-dwagner@suse.de \ --to=dwagner@suse.de \ --cc=hare@suse.de \ --cc=himanshu.madhani@oracle.com \ --cc=james.smart@broadcom.com \ --cc=jsmart2021@gmail.com \ --cc=kbusch@kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-nvme@lists.infradead.org \ --cc=ming.lei@redhat.com \ --cc=sagi@grimberg.me \ --cc=wenxiong@us.ibm.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: linkBe 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.