This is a note to let you know that I've just added the patch titled
nvme: introduce nvme_sync_io_queues
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nvme-introduce-nvme_sync_io_queues.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 1f1eced0132dbd4ab374b8c9c8155bb8281b4c49
Author: Chao Leng <lengchao@xxxxxxxxxx>
Date: Thu Oct 22 10:15:00 2020 +0800
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@xxxxxxxxxx>
Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index ce69aaea581a5..7a964271959d8 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4226,8 +4226,7 @@ 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;
@@ -4235,7 +4234,12 @@ 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 d7132d8cb7c5d..e392d6cd92ced 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -494,6 +494,7 @@ 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);
