Commit 25479069 authored by Chao Leng's avatar Chao Leng Committed by Christoph Hellwig
Browse files

nvme-core: add cancel tagset helpers 



Add nvme_cancel_tagset and nvme_cancel_admin_tagset for tear down and
reconnection error handling.

Signed-off-by: default avatarChao Leng <lengchao@huawei.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 8f8ea928

drivers/nvme/host/core.c

+20 −0
Original line number Diff line number Diff line
@@ -370,6 +370,26 @@ bool nvme_cancel_request(struct request *req, void *data, bool reserved) 
}

EXPORT_SYMBOL_GPL(nvme_cancel_request);



void nvme_cancel_tagset(struct nvme_ctrl *ctrl)

{

	if (ctrl->tagset) {

		blk_mq_tagset_busy_iter(ctrl->tagset,

				nvme_cancel_request, ctrl);

		blk_mq_tagset_wait_completed_request(ctrl->tagset);

	}

}

EXPORT_SYMBOL_GPL(nvme_cancel_tagset);



void nvme_cancel_admin_tagset(struct nvme_ctrl *ctrl)

{

	if (ctrl->admin_tagset) {

		blk_mq_tagset_busy_iter(ctrl->admin_tagset,

				nvme_cancel_request, ctrl);

		blk_mq_tagset_wait_completed_request(ctrl->admin_tagset);

	}

}

EXPORT_SYMBOL_GPL(nvme_cancel_admin_tagset);



bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,

		enum nvme_ctrl_state new_state)

{

drivers/nvme/host/nvme.h

+2 −0
Original line number Diff line number Diff line
@@ -576,6 +576,8 @@ static inline bool nvme_is_aen_req(u16 qid, __u16 command_id) 


void nvme_complete_rq(struct request *req);

bool nvme_cancel_request(struct request *req, void *data, bool reserved);

void nvme_cancel_tagset(struct nvme_ctrl *ctrl);

void nvme_cancel_admin_tagset(struct nvme_ctrl *ctrl);

bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,

		enum nvme_ctrl_state new_state);

bool nvme_wait_reset(struct nvme_ctrl *ctrl);