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
  ...

121 files changed, 2130 insertions, 856 deletions

diff --git a/drivers/block/Kconfig b/drivers/block/Kconfig
index fdb81f2794cd..e19fcab016ba 100644
--- a/drivers/block/Kconfig
+++ b/drivers/block/Kconfig
@@ -408,6 +408,15 @@ config BLK_DEV_RBD
 
 	  If unsure, say N.
 
+config BLK_DEV_UBLK
+	tristate "Userspace block driver (Experimental)"
+	select IO_URING
+	help
+	  io_uring based userspace block driver. Together with ublk server, ublk
+	  has been working well, but interface with userspace or command data
+	  definition isn't finalized yet, and might change according to future
+	  requirement, so mark is as experimental now.
+
 source "drivers/block/rnbd/Kconfig"
 
 endif # BLK_DEV
diff --git a/drivers/block/Makefile b/drivers/block/Makefile
index 934a9c7c3a7c..be631352567e 100644
--- a/drivers/block/Makefile
+++ b/drivers/block/Makefile
@@ -39,4 +39,6 @@ obj-$(CONFIG_BLK_DEV_RNBD)	+= rnbd/
 
 obj-$(CONFIG_BLK_DEV_NULL_BLK)	+= null_blk/
 
+obj-$(CONFIG_BLK_DEV_UBLK)			+= ublk_drv.o
+
 swim_mod-y	:= swim.o swim_asm.o
diff --git a/drivers/block/amiflop.c b/drivers/block/amiflop.c
index 5a566f2fd533..4c8b2ba579ee 100644
--- a/drivers/block/amiflop.c
+++ b/drivers/block/amiflop.c
@@ -1802,7 +1802,7 @@ static int fd_alloc_disk(int drive, int system)
 	unit[drive].gendisk[system] = disk;
 	err = add_disk(disk);
 	if (err)
-		blk_cleanup_disk(disk);
+		put_disk(disk);
 	return err;
 }
 
diff --git a/drivers/block/aoe/aoeblk.c b/drivers/block/aoe/aoeblk.c
index 348adf335217..12b3ca8f6f4a 100644
--- a/drivers/block/aoe/aoeblk.c
+++ b/drivers/block/aoe/aoeblk.c
@@ -427,7 +427,7 @@ aoeblk_gdalloc(void *vp)
 	return;
 
 out_disk_cleanup:
-	blk_cleanup_disk(gd);
+	put_disk(gd);
 err_tagset:
 	blk_mq_free_tag_set(set);
 err_mempool:
diff --git a/drivers/block/aoe/aoedev.c b/drivers/block/aoe/aoedev.c
index b381d1c3ef32..3523dd82d7a0 100644
--- a/drivers/block/aoe/aoedev.c
+++ b/drivers/block/aoe/aoedev.c
@@ -277,7 +277,7 @@ freedev(struct aoedev *d)
 	if (d->gd) {
 		aoedisk_rm_debugfs(d);
 		del_gendisk(d->gd);
-		blk_cleanup_disk(d->gd);
+		put_disk(d->gd);
 		blk_mq_free_tag_set(&d->tag_set);
 	}
 	t = d->targets;
diff --git a/drivers/block/ataflop.c b/drivers/block/ataflop.c
index e232cc4fd444..9deb4df6bdb8 100644
--- a/drivers/block/ataflop.c
+++ b/drivers/block/ataflop.c
@@ -2031,7 +2031,7 @@ static void ataflop_probe(dev_t dev)
 	return;
 
 cleanup_disk:
-	blk_cleanup_disk(unit[drive].disk[type]);
+	put_d