[PATCH 0/4] preparation for zcrx with huge pages

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

Add barebone support for huge pages for zcrx, with the only real
effect is shrinking the page array. However, it's a prerequisite
for other huge page optimisations, like improved dma mappings and
large page pool allocation sizes.

There is no new uapi, but there is a basic example:

https://github.com/isilence/liburing/tree/zcrx-huge-page

Pavel Begunkov (4):
  io_uring/zcrx: add helper for importing user memory
  io_uring/zcrx: add initial infra for large pages
  io_uring: export io_coalesce_buffer()
  io_uring/zcrx: coalesce areas with huge pages

 io_uring/rsrc.c |  2 +-
 io_uring/rsrc.h |  2 ++
 io_uring/zcrx.c | 88 +++++++++++++++++++++++++++++++++++++------------
 io_uring/zcrx.h |  3 ++
 4 files changed, 73 insertions(+), 22 deletions(-)

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2.48.1