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Commit b8517e98 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

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

Pull block layer fixes from Jens Axboe:
 "A small collection of fixes that has been gathered over the last few
  weeks.  This contains:

   - A one-liner fix for NVMe, fixing a missing list_head init that
     could makes us oops on hitting recovery at load time.

   - Two small blk-mq fixes:
        - Fixup a bad goto jump on error handling.
        - Fix for oopsing if running out of reserved tags.

   - A memory leak fix for NBD.

   - Two small writeback fixes from Tejun, fixing a missing init to
     INITIAL_JIFFIES, and a possible underflow introduced recently.

   - A core merge fixup in sg gap detection, where rq->biotail was
     indexed with the count of rq->bio"

* 'for-linus' of git://git.kernel.dk/linux-block:
  writeback: fix possible underflow in write bandwidth calculation
  NVMe: Initialize device list head before starting
  Fix bug in blk_rq_merge_ok
  blkmq: Fix NULL pointer deref when all reserved tags in
  blk-mq: fix use of incorrect goto label in blk_mq_init_queue error path
  nbd: fix possible memory leak
  writeback: add missing INITIAL_JIFFIES init in global_update_bandwidth()
parents c875f421 c72efb65

block/blk-merge.c

+1 −1
Original line number Diff line number Diff line
@@ -592,7 +592,7 @@ bool blk_rq_merge_ok(struct request *rq, struct bio *bio) 
	if (q->queue_flags & (1 << QUEUE_FLAG_SG_GAPS)) {

		struct bio_vec *bprev;



		bprev = &rq->biotail->bi_io_vec[bio->bi_vcnt - 1];

		bprev = &rq->biotail->bi_io_vec[rq->biotail->bi_vcnt - 1];

		if (bvec_gap_to_prev(bprev, bio->bi_io_vec[0].bv_offset))

			return false;

	}

block/blk-mq-tag.c

+4 −2
Original line number Diff line number Diff line
@@ -278,8 +278,10 @@ static int bt_get(struct blk_mq_alloc_data *data, 
		/*

		 * We're out of tags on this hardware queue, kick any

		 * pending IO submits before going to sleep waiting for

		 * some to complete.

		 * some to complete. Note that hctx can be NULL here for

		 * reserved tag allocation.

		 */

		if (hctx)

			blk_mq_run_hw_queue(hctx, false);



		/*

block/blk-mq.c

+3 −3
Original line number Diff line number Diff line
@@ -1938,7 +1938,7 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) 
	 */

	if (percpu_ref_init(&q->mq_usage_counter, blk_mq_usage_counter_release,

			    PERCPU_REF_INIT_ATOMIC, GFP_KERNEL))

		goto err_map;

		goto err_mq_usage;



	setup_timer(&q->timeout, blk_mq_rq_timer, (unsigned long) q);

	blk_queue_rq_timeout(q, 30000);
@@ -1981,7 +1981,7 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) 
	blk_mq_init_cpu_queues(q, set->nr_hw_queues);



	if (blk_mq_init_hw_queues(q, set))

		goto err_hw;

		goto err_mq_usage;



	mutex_lock(&all_q_mutex);

	list_add_tail(&q->all_q_node, &all_q_list);
@@ -1993,7 +1993,7 @@ struct request_queue *blk_mq_init_queue(struct blk_mq_tag_set *set) 


	return q;



err_hw:

err_mq_usage:

	blk_cleanup_queue(q);

err_hctxs:

	kfree(map);

drivers/block/nbd.c

+4 −4
Original line number Diff line number Diff line
@@ -803,10 +803,6 @@ static int __init nbd_init(void) 
		return -EINVAL;

	}



	nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);

	if (!nbd_dev)

		return -ENOMEM;



	part_shift = 0;

	if (max_part > 0) {

		part_shift = fls(max_part);
@@ -828,6 +824,10 @@ static int __init nbd_init(void) 
	if (nbds_max > 1UL << (MINORBITS - part_shift))

		return -EINVAL;



	nbd_dev = kcalloc(nbds_max, sizeof(*nbd_dev), GFP_KERNEL);

	if (!nbd_dev)

		return -ENOMEM;



	for (i = 0; i < nbds_max; i++) {

		struct gendisk *disk = alloc_disk(1 << part_shift);

		if (!disk)

drivers/block/nvme-core.c

+1 −0
Original line number Diff line number Diff line
@@ -3003,6 +3003,7 @@ static int nvme_probe(struct pci_dev *pdev, const struct pci_device_id *id) 
	}

	get_device(dev->device);



	INIT_LIST_HEAD(&dev->node);

	INIT_WORK(&dev->probe_work, nvme_async_probe);

	schedule_work(&dev->probe_work);

	return 0;