[PATCH io_uring 0/5] Add dmabuf support for io_uring zcrx

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

Currently, io_uring zcrx uses regular user pages to populate the
area for page pools, this series allows the user to pass a dmabuf
instead.

Patches 1-4 are preparatory and do code shuffling. All dmabuf
touching changes are in the last patch. A basic example can be
found at:

https://github.com/isilence/liburing/tree/zcrx-dmabuf
https://github.com/isilence/liburing.git zcrx-dmabuf

Pavel Begunkov (5):
  io_uring/zcrx: improve area validation
  io_uring/zcrx: resolve netdev before area creation
  io_uring/zcrx: split out memory holders from area
  io_uring/zcrx: split common area map/unmap parts
  io_uring/zcrx: dmabuf backed zerocopy receive

 include/uapi/linux/io_uring.h |   6 +-
 io_uring/rsrc.c               |  27 ++--
 io_uring/rsrc.h               |   2 +-
 io_uring/zcrx.c               | 260 +++++++++++++++++++++++++++-------
 io_uring/zcrx.h               |  18 ++-
 5 files changed, 248 insertions(+), 65 deletions(-)

-- 
2.48.1