Merge tag 'for-5.20/block-2022-07-29' of git://git.kernel.dk/linux-block

Pull block updates from Jens Axboe:

 - Improve the type checking of request flags (Bart)

 - Ensure queue mapping for a single queues always picks the right queue
   (Bart)

 - Sanitize the io priority handling (Jan)

 - rq-qos race fix (Jinke)

 - Reserved tags handling improvements (John)

 - Separate memory alignment from file/disk offset aligment for O_DIRECT
   (Keith)

 - Add new ublk driver, userspace block driver using io_uring for
   communication with the userspace backend (Ming)

 - Use try_cmpxchg() to cleanup the code in various spots (Uros)

 - Finally remove bdevname() (Christoph)

 - Clean up the zoned device handling (Christoph)

 - Clean up independent access range support (Christoph)

 - Clean up and improve block sysfs handling (Christoph)

 - Clean up and improve teardown of block devices.

   This turns the usual two step process into something that is simpler
   to implement and handle in block drivers (Christoph)

 - Clean up chunk size handling (Christoph)

 - Misc cleanups and fixes (Bart, Bo, Dan, GuoYong, Jason, Keith, Liu,
   Ming, Sebastian, Yang, Ying)

* tag 'for-5.20/block-2022-07-29' of git://git.kernel.dk/linux-block: (178 commits)
  ublk_drv: fix double shift bug
  ublk_drv: make sure that correct flags(features) returned to userspace
  ublk_drv: fix error handling of ublk_add_dev
  ublk_drv: fix lockdep warning
  block: remove __blk_get_queue
  block: call blk_mq_exit_queue from disk_release for never added disks
  blk-mq: fix error handling in __blk_mq_alloc_disk
  ublk: defer disk allocation
  ublk: rewrite ublk_ctrl_get_queue_affinity to not rely on hctx->cpumask
  ublk: fold __ublk_create_dev into ublk_ctrl_add_dev
  ublk: cleanup ublk_ctrl_uring_cmd
  ublk: simplify ublk_ch_open and ublk_ch_release
  ublk: remove the empty open and release block device operations
  ublk: remove UBLK_IO_F_PREFLUSH
  ublk: add a MAINTAINERS entry
  block: don't allow the same type rq_qos add more than once
  mmc: fix disk/queue leak in case of adding disk failure
  ublk_drv: fix an IS_ERR() vs NULL check
  ublk: remove UBLK_IO_F_INTEGRITY
  ublk_drv: remove unneeded semicolon
  ...

1 files changed, 12 insertions, 19 deletions

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index 2dcd738c6952..8e3b36d1cb57 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -37,29 +37,25 @@ static void blk_mq_update_wake_batch(struct blk_mq_tags *tags,
  * to get tag when first time, the other shared-tag users could reserve
  * budget for it.
  */
-bool __blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
+void __blk_mq_tag_busy(struct blk_mq_hw_ctx *hctx)
 {
 	unsigned int users;
 
 	if (blk_mq_is_shared_tags(hctx->flags)) {
 		struct request_queue *q = hctx->queue;
 
-		if (test_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags) ||
-		    test_and_set_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags)) {
-			return true;
-		}
+		if (test_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags))
+			return;
+		set_bit(QUEUE_FLAG_HCTX_ACTIVE, &q->queue_flags);
 	} else {
-		if (test_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state) ||
-		    test_and_set_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state)) {
-			return true;
-		}
+		if (test_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state))
+			return;
+		set_bit(BLK_MQ_S_TAG_ACTIVE, &hctx->state);
 	}
 
 	users = atomic_inc_return(&hctx->tags->active_queues);
 
 	blk_mq_update_wake_batch(hctx->tags, users);
-
-	return true;
 }
 
 /*
@@ -266,7 +262,6 @@ static bool bt_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
 	struct blk_mq_hw_ctx *hctx = iter_data->hctx;
 	struct request_queue *q = iter_data->q;
 	struct blk_mq_tag_set *set = q->tag_set;
-	bool reserved = iter_data->reserved;
 	struct blk_mq_tags *tags;
 	struct request *rq;
 	bool ret = true;
@@ -276,7 +271,7 @@ static bool bt_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
 	else
 		tags = hctx->tags;
 
-	if (!reserved)
+	if (!iter_data->reserved)
 		bitnr += tags->nr_reserved_tags;
 	/*
 	 * We can hit rq == NULL here, because the tagging functions
@@ -287,7 +282,7 @@ static bool bt_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
 		return true;
 
 	if (rq->q == q && (!hctx || rq->mq_hctx == hctx))
-		ret = iter_data->fn(rq, iter_data->data, reserved);
+		ret = iter_data->fn(rq, iter_data->data);
 	blk_mq_put_rq_ref(rq);
 	return ret;
 }
@@ -337,12 +332,11 @@ static bool bt_tags_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
 {
 	struct bt_tags_iter_data *iter_data = data;
 	struct blk_mq_tags *tags = iter_data->tags;
-	bool reserved = iter_data->flags & BT_TAG_ITER_RESERVED;
 	struct request *rq;
 	bool ret = true;
 	bool iter_static_rqs = !!(iter_data->flags & BT_TAG_ITER_STATIC_RQS);
 
-	if (!reserved)
+	if (!(iter_data->flags & BT_TAG_ITER_RESERVED))
 		bitnr += tags->nr_reserved_tags;
 
 	/*
@@ -358,7 +352,7 @@ static bool bt_tags_iter(struct sbitmap *bitmap, unsigned int bitnr, void *data)
 
 	if (!(iter_data->flags & BT_TAG_ITER_STARTED) ||
 	    blk_mq_request_started(rq))
-		ret = iter_data->fn(rq, iter_data->data, reserved);
+		ret = iter_data->fn(rq, iter_data->data);
 	if (!iter_static_rqs)
 		blk_mq_put_rq_ref(rq);
 	return ret;
@@ -448,8 +442,7 @@ void blk_mq_tagset_busy_iter(struct blk_mq_tag_set *tagset,
 }
 EXPORT_SYMBOL(blk_mq_tagset_busy_iter);
 
-static bool blk_mq_tagset_count_completed_rqs(struct request *rq,
-		void *data, bool reserved)
+static bool blk_mq_tagset_count_completed_rqs(struct request *rq, void *data)
 {
 	unsigned *count = data;