[GIT PULL] io_uring fixes for 6.15-rc3

[Jens Axboe <axboe@kernel.dk>]

Hi Linus,

Set of fixes for io_uring that should go into the 6.15 kernel release.
This pull request contains:

- Set of patches correctly capping iov_iter->nr_segs for imports of
  registered buffers, both kbuf and normal ones. 3 cleanups to make it
  saner first, then two fixes for each of the buffer types. Fixes a
  performance regression where partial buffer usage doesn't trim the
  tail number of segments, leading the block layer to iterate the IOs to
  check if it needs splitting.

- Two patches tweaking the newly introduced zero-copy rx API, mostly to
  keep the API consistent once we add multiple interface queues per ring
  support in the 6.16 release.

- zc rx unmapping fix for a dead device

Please pull!


The following changes since commit cf960726eb65e8d0bfecbcce6cf95f47b1ffa6cc:

  io_uring/kbuf: reject zero sized provided buffers (2025-04-07 07:51:23 -0600)

are available in the Git repository at:

  git://git.kernel.dk/linux.git tags/io_uring-6.15-20250418

for you to fetch changes up to f12ecf5e1c5eca48b8652e893afcdb730384a6aa:

  io_uring/zcrx: fix late dma unmap for a dead dev (2025-04-18 06:12:10 -0600)

----------------------------------------------------------------
io_uring-6.15-20250418

----------------------------------------------------------------
Jens Axboe (1):
      io_uring/rsrc: ensure segments counts are correct on kbuf buffers

Nitesh Shetty (1):
      io_uring/rsrc: send exact nr_segs for fixed buffer

Pavel Begunkov (6):
      io_uring/zcrx: return ifq id to the user
      io_uring/zcrx: add pp to ifq conversion helper
      io_uring/rsrc: don't skip offset calculation
      io_uring/rsrc: separate kbuf offset adjustments
      io_uring/rsrc: refactor io_import_fixed
      io_uring/zcrx: fix late dma unmap for a dead dev

 include/uapi/linux/io_uring.h |  4 +-
 io_uring/rsrc.c               | 92 ++++++++++++++++++++++---------------------
 io_uring/zcrx.c               | 37 ++++++++++++-----
 io_uring/zcrx.h               |  1 +
 4 files changed, 79 insertions(+), 55 deletions(-)

-- 
Jens Axboe