block-6.5-2023-07-03

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Merge tag 'block-6.5-2023-07-03' of git://git.kernel.dk/linux

Pull more block updates from Jens Axboe:
 "Mostly items that came in a bit late for the initial pull request,
  wanted to make sure they had the appropriate amount of linux-next soak
  before going upstream.

  Outside of stragglers, just generic fixes for either merge window
  items, or longer standing bugs"

* tag 'block-6.5-2023-07-03' of git://git.kernel.dk/linux: (25 commits)
  md/raid0: add discard support for the 'original' layout
  nvme: disable controller on reset state failure
  nvme: sync timeout work on failed reset
  nvme: ensure unquiesce on teardown
  cdrom/gdrom: Fix build error
  nvme: improved uring polling
  block: add request polling helper
  nvme-mpath: fix I/O failure with EAGAIN when failing over I/O
  nvme: host: fix command name spelling
  blk-sysfs: add a new attr_group for blk_mq
  blk-iocost: move wbt_enable/disable_default() out of spinlock
  blk-wbt: cleanup rwb_enabled() and wbt_disabled()
  blk-wbt: remove dead code to handle wbt enable/disable with io inflight
  blk-wbt: don't create wbt sysfs entry if CONFIG_BLK_WBT is disabled
  blk-mq: fix two misuses on RQF_USE_SCHED
  blk-throttle: Fix io statistics for cgroup v1
  bcache: Fix bcache device claiming
  bcache: Alloc holder object before async registration
  raid10: avoid spin_lock from fastpath from raid10_unplug()
  md: fix 'delete_mutex' deadlock
  ...

include/uapi/linux/io_uring.h

@@ -244,8 +244,10 @@ enum io_uring_op {
  * sqe->uring_cmd_flags
  * IORING_URING_CMD_FIXED	use registered buffer; pass this flag
  *				along with setting sqe->buf_index.
+ * IORING_URING_CMD_POLLED	driver use only
  */
 #define IORING_URING_CMD_FIXED	(1U << 0)
+#define IORING_URING_CMD_POLLED	(1U << 31)
 
 
 /*