Commit 88058417 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-linus-20181201' of git://git.kernel.dk/linux-block 

Pull block layer fixes from Jens Axboe:

 - Single range elevator discard merge fix, that caused crashes (Ming)

 - Fix for a regression in O_DIRECT, where we could potentially lose the
   error value (Maximilian Heyne)

 - NVMe pull request from Christoph, with little fixes all over the map
   for NVMe.

* tag 'for-linus-20181201' of git://git.kernel.dk/linux-block:
  block: fix single range discard merge
  nvme-rdma: fix double freeing of async event data
  nvme: flush namespace scanning work just before removing namespaces
  nvme: warn when finding multi-port subsystems without multipathing enabled
  fs: fix lost error code in dio_complete
  nvme-pci: fix surprise removal
  nvme-fc: initialize nvme_req(rq)->ctrl after calling __nvme_fc_init_request()
  nvme: Free ctrl device name on init failure
parents c734b425 1c9b357c

block/blk-merge.c

+1 −1
Original line number Diff line number Diff line
@@ -820,7 +820,7 @@ static struct request *attempt_merge(struct request_queue *q, 


	req->__data_len += blk_rq_bytes(next);



	if (req_op(req) != REQ_OP_DISCARD)

	if (!blk_discard_mergable(req))

		elv_merge_requests(q, req, next);



	/*

drivers/nvme/host/core.c

+5 −3
Original line number Diff line number Diff line
@@ -3314,6 +3314,9 @@ void nvme_remove_namespaces(struct nvme_ctrl *ctrl) 
	struct nvme_ns *ns, *next;

	LIST_HEAD(ns_list);



	/* prevent racing with ns scanning */

	flush_work(&ctrl->scan_work);



	/*

	 * The dead states indicates the controller was not gracefully

	 * disconnected. In that case, we won't be able to flush any data while
@@ -3476,7 +3479,6 @@ void nvme_stop_ctrl(struct nvme_ctrl *ctrl) 
	nvme_mpath_stop(ctrl);

	nvme_stop_keep_alive(ctrl);

	flush_work(&ctrl->async_event_work);

	flush_work(&ctrl->scan_work);

	cancel_work_sync(&ctrl->fw_act_work);

	if (ctrl->ops->stop_ctrl)

		ctrl->ops->stop_ctrl(ctrl);
@@ -3585,7 +3587,7 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev, 


	return 0;

out_free_name:

	kfree_const(dev->kobj.name);

	kfree_const(ctrl->device->kobj.name);

out_release_instance:

	ida_simple_remove(&nvme_instance_ida, ctrl->instance);

out:
@@ -3607,7 +3609,7 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl) 
	down_read(&ctrl->namespaces_rwsem);



	/* Forcibly unquiesce queues to avoid blocking dispatch */

	if (ctrl->admin_q)

	if (ctrl->admin_q && !blk_queue_dying(ctrl->admin_q))

		blk_mq_unquiesce_queue(ctrl->admin_q);



	list_for_each_entry(ns, &ctrl->namespaces, list)

drivers/nvme/host/fc.c

+1 −1
Original line number Diff line number Diff line
@@ -1752,12 +1752,12 @@ nvme_fc_init_request(struct blk_mq_tag_set *set, struct request *rq, 
	struct nvme_fc_queue *queue = &ctrl->queues[queue_idx];

	int res;



	nvme_req(rq)->ctrl = &ctrl->ctrl;

	res = __nvme_fc_init_request(ctrl, queue, &op->op, rq, queue->rqcnt++);

	if (res)

		return res;

	op->op.fcp_req.first_sgl = &op->sgl[0];

	op->op.fcp_req.private = &op->priv[0];

	nvme_req(rq)->ctrl = &ctrl->ctrl;

	return res;

}

drivers/nvme/host/nvme.h

+3 −0
Original line number Diff line number Diff line
@@ -531,6 +531,9 @@ static inline void nvme_mpath_check_last_path(struct nvme_ns *ns) 
static inline int nvme_mpath_init(struct nvme_ctrl *ctrl,

		struct nvme_id_ctrl *id)

{

	if (ctrl->subsys->cmic & (1 << 3))

		dev_warn(ctrl->device,

"Please enable CONFIG_NVME_MULTIPATH for full support of multi-port devices.\n");

	return 0;

}

static inline void nvme_mpath_uninit(struct nvme_ctrl *ctrl)

drivers/nvme/host/rdma.c

+2 −0
Original line number Diff line number Diff line
@@ -184,6 +184,7 @@ static int nvme_rdma_alloc_qe(struct ib_device *ibdev, struct nvme_rdma_qe *qe, 
	qe->dma = ib_dma_map_single(ibdev, qe->data, capsule_size, dir);

	if (ib_dma_mapping_error(ibdev, qe->dma)) {

		kfree(qe->data);

		qe->data = NULL;

		return -ENOMEM;

	}
@@ -823,6 +824,7 @@ out_free_tagset: 
out_free_async_qe:

	nvme_rdma_free_qe(ctrl->device->dev, &ctrl->async_event_sqe,

		sizeof(struct nvme_command), DMA_TO_DEVICE);

	ctrl->async_event_sqe.data = NULL;

out_free_queue:

	nvme_rdma_free_queue(&ctrl->queues[0]);

	return error;

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