[PATCH for-next v3 0/4] iopoll support for io_uring/nvme

[Kanchan Joshi <joshi.k@samsung.com>]

Series enables async polling on io_uring command, and nvme passthrough
(for io-commands) is wired up to leverage that.
This gives nice IOPS hike (even 100% at times) particularly on lower
queue-depths.

Changes since v2:
- rebase against for-next (which now has bio-cache that can operate on
  polled passthrough IO)
- bit of rewording in commit description

Changes since v1:
- corrected variable name (Jens)
- fix for a warning (test-robot)

Kanchan Joshi (4):
  fs: add file_operations->uring_cmd_iopoll
  io_uring: add iopoll infrastructure for io_uring_cmd
  block: export blk_rq_is_poll
  nvme: wire up async polling for io passthrough commands

 block/blk-mq.c                |  3 +-
 drivers/nvme/host/core.c      |  1 +
 drivers/nvme/host/ioctl.c     | 73 ++++++++++++++++++++++++++++++++---
 drivers/nvme/host/multipath.c |  1 +
 drivers/nvme/host/nvme.h      |  2 +
 include/linux/blk-mq.h        |  1 +
 include/linux/fs.h            |  1 +
 include/linux/io_uring.h      |  8 +++-
 io_uring/io_uring.c           |  6 +++
 io_uring/opdef.c              |  1 +
 io_uring/rw.c                 |  8 +++-
 io_uring/uring_cmd.c          | 11 +++++-
 12 files changed, 105 insertions(+), 11 deletions(-)


base-commit: 15e543410e9ba86d36a0410bdaf0c02f59fb8936
-- 
2.25.1