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nvme: introduce nvme_sync_io_queues

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[ 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>
This commit is contained in:
Chao Leng 2020-10-22 10:15:00 +08:00 committed by Greg Kroah-Hartman
parent c473b3e56c
commit 0ca279c859
2 changed files with 7 additions and 2 deletions
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8
drivers/nvme/host/core.c
View File

@ -4226,8 +4226,7 @@ void nvme_start_queues(struct nvme_ctrl *ctrl)
} }
EXPORT_SYMBOL_GPL(nvme_start_queues); EXPORT_SYMBOL_GPL(nvme_start_queues);
void nvme_sync_io_queues(struct nvme_ctrl *ctrl)
void nvme_sync_queues(struct nvme_ctrl *ctrl)
{ {
struct nvme_ns *ns; struct nvme_ns *ns;
@ -4235,7 +4234,12 @@ void nvme_sync_queues(struct nvme_ctrl *ctrl)
list_for_each_entry(ns, &ctrl->namespaces, list) list_for_each_entry(ns, &ctrl->namespaces, list)
blk_sync_queue(ns->queue); blk_sync_queue(ns->queue);
up_read(&ctrl->namespaces_rwsem); 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) if (ctrl->admin_q)
blk_sync_queue(ctrl->admin_q); blk_sync_queue(ctrl->admin_q);
} }

1
drivers/nvme/host/nvme.h
View File

@ -494,6 +494,7 @@ void nvme_stop_queues(struct nvme_ctrl *ctrl);
void nvme_start_queues(struct nvme_ctrl *ctrl); void nvme_start_queues(struct nvme_ctrl *ctrl);
void nvme_kill_queues(struct nvme_ctrl *ctrl); void nvme_kill_queues(struct nvme_ctrl *ctrl);
void nvme_sync_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_unfreeze(struct nvme_ctrl *ctrl);
void nvme_wait_freeze(struct nvme_ctrl *ctrl); void nvme_wait_freeze(struct nvme_ctrl *ctrl);
int nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout); int nvme_wait_freeze_timeout(struct nvme_ctrl *ctrl, long timeout);