[RFC 0/6] io_uring simplify zerocopy send API

[Pavel Begunkov <asml.silence@gmail.com>]

We're changing zerocopy send API making it a bit less flexible but
much simpler based on the feedback we've got from people trying it
out. We replace slots and flushing with a per request notifications.
The API change is described in 5/6 in more details.
more in 5/6.

The only real functional change is in 5/6, 2-4 are reverts, and patches
1 and 6 are fixing selftests.

Pavel Begunkov (6):
  selftests/net: temporarily disable io_uring zc test
  Revert "io_uring: add zc notification flush requests"
  Revert "io_uring: rename IORING_OP_FILES_UPDATE"
  io_uring/notif: remove notif registration
  io_uring/net: simplify zerocopy send user API
  selftests/net: return back io_uring zc send tests

 include/uapi/linux/io_uring.h                 |  28 ++---
 io_uring/io_uring.c                           |  14 +--
 io_uring/net.c                                |  57 ++++++----
 io_uring/net.h                                |   1 +
 io_uring/notif.c                              |  83 +-------------
 io_uring/notif.h                              |  54 +---------
 io_uring/opdef.c                              |  12 +--
 io_uring/rsrc.c                               |  55 +---------
 io_uring/rsrc.h                               |   4 +-
 .../selftests/net/io_uring_zerocopy_tx.c      | 101 +++++++-----------
 .../selftests/net/io_uring_zerocopy_tx.sh     |  10 +-
 11 files changed, 98 insertions(+), 321 deletions(-)

-- 
2.37.2