From: Chao Leng <lengchao@huawei.com>
To: <linux-nvme@lists.infradead.org>
Cc: kbusch@kernel.org, axboe@fb.com, hch@lst.de, lengchao@huawei.com,
sagi@grimberg.me
Subject: [PATCH v2 1/5] nvme-core: introduce sync io queues
Date: Thu, 22 Oct 2020 10:15:00 +0800 [thread overview]
Message-ID: <20201022021500.11022-1-lengchao@huawei.com> (raw)
Introduce sync io queues for some scenarios which just only need sync
io queues not sync all queues.
Signed-off-by: Chao Leng <lengchao@huawei.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
---
drivers/nvme/host/core.c | 8 ++++++--
drivers/nvme/host/nvme.h | 1 +
2 files changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index e85f6304efd7..2211cf155e89 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4573,8 +4573,7 @@ void nvme_start_queues(struct nvme_ctrl *ctrl)
}
EXPORT_SYMBOL_GPL(nvme_start_queues);
-
-void nvme_sync_queues(struct nvme_ctrl *ctrl)
+void nvme_sync_io_queues(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
@@ -4582,7 +4581,12 @@ void nvme_sync_queues(struct nvme_ctrl *ctrl)
list_for_each_entry(ns, &ctrl->namespaces, list)
blk_sync_queue(ns->queue);
up_read(&ctrl->namespaces_rwsem);
+}
+EXPORT_SYMBOL_GPL(nvme_sync_io_queues);
+void nvme_sync_queues(struct nvme_ctrl *ctrl)
+{
+ nvme_sync_io_queues(ctrl);
if (ctrl->admin_q)
blk_sync_queue(ctrl->admin_q);
}
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 566776100126..49d7f43511d4 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -602,6 +602,7 @@ void nvme_stop_queues(struct nvme_ctrl *ctrl);
void nvme_start_queues(struct nvme_ctrl *ctrl);
void nvme_kill_queues(struct nvme_ctrl *ctrl);
void nvme_sync_queues(struct nvme_ctrl *ctrl);
+void nvme_sync_io_queues(struct nvme_ctrl *ctrl);
void nvme_unfreeze(struct nvme_ctrl *ctrl);
void nvme_wait_freeze(struct nvme_ctrl *ctrl);
int nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout);
--
2.16.4
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next reply other threads:[~2020-10-22 2:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-22 2:15 Chao Leng [this message]
2020-11-03 9:26 ` [PATCH v2 1/5] nvme-core: introduce sync io queues Christoph Hellwig
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