nvme: introduce nvme_sync_io_queues

[ Upstream commit 04800fbff4764ab7b32c49d19628605a5d4cb85c ]

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>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 893e29624c16be9c8e67c80d109d9e9cc3aa3915..59040bab5d6fa82b8400b28fc7e94c55eeb2187b 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4641,8 +4641,7 @@ 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;
 
@@ -4650,7 +4649,12 @@ 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 2aaedfa43ed86c45886c2748576423bfd6720467..97fbd61191b336108d42c8aff94dcbceebf68e0e 100644 (file)
--- 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);