Commit 04800fbf authored by Chao Leng's avatar Chao Leng Committed by Christoph Hellwig
Browse files

nvme: introduce nvme_sync_io_queues 



Introduce sync io queues for some scenarios which just only need sync
io queues not sync all queues.

Signed-off-by: default avatarChao Leng <lengchao@huawei.com>
Reviewed-by: default avatarSagi Grimberg <sagi@grimberg.me>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 38210800

drivers/nvme/host/core.c

+6 −2
Original line number Diff line number Diff line
@@ -4582,8 +4582,7 @@ 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;
@@ -4591,7 +4590,12 @@ 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);

}

drivers/nvme/host/nvme.h

+1 −0
Original line number Diff line number Diff line
@@ -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);