[GIT PULL] Final io_uring updates/fixes for 6.15-rc1

[Jens Axboe <axboe@kernel.dk>]

Hi Linus,

Final separate pull request for io_uring. Started out as a series of
cleanups improvements and improvements for registered buffers, but as
the last series of the io_uring changes for 6.15, it also collected a
few fixes for the other branches on top. Sits on top of the previously
sent out zc-rx and epoll-wait pull requests. This pull request contains:

- Add support for vectored fixed/registered buffers. Previously only
  single segments have been supported for commands, now vectored
  variants are supported as well. This series includes networking
  and file read/write support.

- Small series unifying return codes across multi and single shot.

- Small series cleaning up registerd buffer importing.

- Adding support for vectored registered buffers for uring_cmd.

- Fix for io-wq handling of command reissue.

- Various little fixes and tweaks.

Please pull!


The following changes since commit 0d83b8a9f180436a84fbdeb575696b0c3ae0ac0c:

  io_uring: introduce io_cache_free() helper (2025-03-05 07:38:55 -0700)

are available in the Git repository at:

  git://git.kernel.dk/linux.git tags/for-6.15/io_uring-reg-vec-20250327

for you to fetch changes up to 6889ae1b4df1579bcdffef023e2ea9a982565dff:

  io_uring/net: fix io_req_post_cqe abuse by send bundle (2025-03-27 05:48:32 -0600)

----------------------------------------------------------------
Caleb Sander Mateos (2):
      io_uring/net: only import send_zc buffer once
      io_uring/net: use REQ_F_IMPORT_BUFFER for send_zc

Jens Axboe (3):
      Merge branch 'for-6.15/io_uring' into for-6.15/io_uring-reg-vec
      Merge branch 'for-6.15/io_uring-rx-zc' into for-6.15/io_uring-reg-vec
      Merge branch 'for-6.15/io_uring-epoll-wait' into for-6.15/io_uring-reg-vec

Pavel Begunkov (23):
      io_uring: introduce struct iou_vec
      io_uring: add infra for importing vectored reg buffers
      io_uring/rw: implement vectored registered rw
      io_uring/rw: defer reg buf vec import
      io_uring/net: combine msghdr copy
      io_uring/net: pull vec alloc out of msghdr import
      io_uring/net: convert to struct iou_vec
      io_uring/net: implement vectored reg bufs for zctx
      io_uring: cap cached iovec/bvec size
      io_uring: return -EAGAIN to continue multishot
      io_uring: unify STOP_MULTISHOT with IOU_OK
      io_uring: introduce io_prep_reg_iovec()
      io_uring: rely on io_prep_reg_vec for iovec placement
      io_uring: rename the data cmd cache
      io_uring/cmd: don't expose entire cmd async data
      io_uring/cmd: add iovec cache for commands
      io_uring/cmd: introduce io_uring_cmd_import_fixed_vec
      io_uring: fix retry handling off iowq
      io_uring: defer iowq cqe overflow via task_work
      io_uring: open code __io_post_aux_cqe()
      io_uring: rename "min" arg in io_iopoll_check()
      io_uring: move min_events sanitisation
      io_uring/net: fix io_req_post_cqe abuse by send bundle

 include/linux/io_uring/cmd.h   |  13 ++
 include/linux/io_uring_types.h |  19 ++-
 include/uapi/linux/io_uring.h  |   2 +
 io_uring/alloc_cache.h         |   9 --
 io_uring/io_uring.c            |  65 ++++-----
 io_uring/io_uring.h            |  19 +--
 io_uring/net.c                 | 235 +++++++++++++++++----------------
 io_uring/net.h                 |   6 +-
 io_uring/opdef.c               |  42 +++++-
 io_uring/poll.c                |   5 +-
 io_uring/rsrc.c                | 163 +++++++++++++++++++++++
 io_uring/rsrc.h                |  24 ++++
 io_uring/rw.c                  |  94 ++++++++++---
 io_uring/rw.h                  |   6 +-
 io_uring/uring_cmd.c           |  59 +++++++--
 io_uring/uring_cmd.h           |  17 +++
 16 files changed, 567 insertions(+), 211 deletions(-)

-- 
Jens Axboe