Merge tag 'for-5.14/block-2021-06-29' of git://git.kernel.dk/linux-block

Pull core block updates from Jens Axboe:

 - disk events cleanup (Christoph)

 - gendisk and request queue allocation simplifications (Christoph)

 - bdev_disk_changed cleanups (Christoph)

 - IO priority improvements (Bart)

 - Chained bio completion trace fix (Edward)

 - blk-wbt fixes (Jan)

 - blk-wbt enable/disable fix (Zhang)

 - Scheduler dispatch improvements (Jan, Ming)

 - Shared tagset scheduler improvements (John)

 - BFQ updates (Paolo, Luca, Pietro)

 - BFQ lock inversion fix (Jan)

 - Documentation improvements (Kir)

 - CLONE_IO block cgroup fix (Tejun)

 - Remove of ancient and deprecated block dump feature (zhangyi)

 - Discard merge fix (Ming)

 - Misc fixes or followup fixes (Colin, Damien, Dan, Long, Max, Thomas,
   Yang)

* tag 'for-5.14/block-2021-06-29' of git://git.kernel.dk/linux-block: (129 commits)
  block: fix discard request merge
  block/mq-deadline: Remove a WARN_ON_ONCE() call
  blk-mq: update hctx->dispatch_busy in case of real scheduler
  blk: Fix lock inversion between ioc lock and bfqd lock
  bfq: Remove merged request already in bfq_requests_merged()
  block: pass a gendisk to bdev_disk_changed
  block: move bdev_disk_changed
  block: add the events* attributes to disk_attrs
  block: move the disk events code to a separate file
  block: fix trace completion for chained bio
  block/partitions/msdos: Fix typo inidicator -> indicator
  block, bfq: reset waker pointer with shared queues
  block, bfq: check waker only for queues with no in-flight I/O
  block, bfq: avoid delayed merge of async queues
  block, bfq: boost throughput by extending queue-merging times
  block, bfq: consider also creation time in delayed stable merge
  block, bfq: fix delayed stable merge check
  block, bfq: let also stably merged queues enjoy weight raising
  blk-wbt: make sure throttle is enabled properly
  blk-wbt: introduce a new disable state to prevent false positive by rwb_enabled()
  ...

3 files changed, 13 insertions, 25 deletions

diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index c34e71b0c4a9..06b360f7123a 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -338,14 +338,13 @@ static const struct blk_mq_ops aoeblk_mq_ops = {
 	.queue_rq	= aoeblk_queue_rq,
 };
 
-/* alloc_disk and add_disk can sleep */
+/* blk_mq_alloc_disk and add_disk can sleep */
 void
 aoeblk_gdalloc(void *vp)
 {
 	struct aoedev *d = vp;
 	struct gendisk *gd;
 	mempool_t *mp;
-	struct request_queue *q;
 	struct blk_mq_tag_set *set;
 	ulong flags;
 	int late = 0;
@@ -362,19 +361,12 @@ aoeblk_gdalloc(void *vp)
 	if (late)
 		return;
 
-	gd = alloc_disk(AOE_PARTITIONS);
-	if (gd == NULL) {
-		pr_err("aoe: cannot allocate disk structure for %ld.%d\n",
-			d->aoemajor, d->aoeminor);
-		goto err;
-	}
-
 	mp = mempool_create(MIN_BUFS, mempool_alloc_slab, mempool_free_slab,
 		buf_pool_cache);
 	if (mp == NULL) {
 		printk(KERN_ERR "aoe: cannot allocate bufpool for %ld.%d\n",
 			d->aoemajor, d->aoeminor);
-		goto err_disk;
+		goto err;
 	}
 
 	set = &d->tag_set;
@@ -391,12 +383,11 @@ aoeblk_gdalloc(void *vp)
 		goto err_mempool;
 	}
 
-	q = blk_mq_init_queue(set);
-	if (IS_ERR(q)) {
+	gd = blk_mq_alloc_disk(set, d);
+	if (IS_ERR(gd)) {
 		pr_err("aoe: cannot allocate block queue for %ld.%d\n",
 			d->aoemajor, d->aoeminor);
-		blk_mq_free_tag_set(set);
-		goto err_mempool;
+		goto err_tagset;
 	}
 
 	spin_lock_irqsave(&d->lock, flags);
@@ -405,16 +396,16 @@ aoeblk_gdalloc(void *vp)
 	WARN_ON(d->flags & DEVFL_TKILL);
 	WARN_ON(d->gd);
 	WARN_ON(d->flags & DEVFL_UP);
-	blk_queue_max_hw_sectors(q, BLK_DEF_MAX_SECTORS);
-	blk_queue_io_opt(q, SZ_2M);
+	blk_queue_max_hw_sectors(gd->queue, BLK_DEF_MAX_SECTORS);
+	blk_queue_io_opt(gd->queue, SZ_2M);
 	d->bufpool = mp;
-	d->blkq = gd->queue = q;
-	q->queuedata = d;
+	d->blkq = gd->queue;
 	d->gd = gd;
 	if (aoe_maxsectors)
-		blk_queue_max_hw_sectors(q, aoe_maxsectors);
+		blk_queue_max_hw_sectors(gd->queue, aoe_maxsectors);
 	gd->major = AOE_MAJOR;
 	gd->first_minor = d->sysminor;
+	gd->minors = AOE_PARTITIONS;
 	gd->fops = &aoe_bdops;
 	gd->private_data = d;
 	set_capacity(gd, d->ssize);
@@ -435,10 +426,10 @@ aoeblk_gdalloc(void *vp)
 	spin_unlock_irqrestore(&d->lock, flags);
 	return;
 
+err_tagset:
+	blk_mq_free_tag_set(set);
 err_mempool:
 	mempool_destroy(mp);
-err_disk:
-	put_disk(gd);
 err:
 	spin_lock_irqsave(&d->lock, flags);
 	d->flags &= ~DEVFL_GD_NOW;
diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c
index ecd77897a761..588889bea7c3 100644
--- a/drivers/block/aoe/aoecmd.c
+++ b/drivers/block/aoe/aoecmd.c
@@ -1701,8 +1701,6 @@ aoecmd_init(void)
 		goto ktiowq_fail;
 	}
 
-	mutex_init(&ktio_spawn_lock);
-
 	for (i = 0; i < ncpus; i++) {
 		INIT_LIST_HEAD(&iocq[i].head);
 		spin_lock_init(&iocq[i].lock);
diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index e2ea2356da06..c5753c6bfe80 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -277,9 +277,8 @@ freedev(struct aoedev *d)
 	if (d->gd) {
 		aoedisk_rm_debugfs(d);
 		del_gendisk(d->gd);
-		put_disk(d->gd);
+		blk_cleanup_disk(d->gd);
 		blk_mq_free_tag_set(&d->tag_set);
-		blk_cleanup_queue(d->blkq);
 	}
 	t = d->targets;
 	e = t + d->ntargets;