[PATCH 0/8] legacy provided buffer deprecation / deoptimisation

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

Legacy provided buffers are slow and discouraged, users are encouraged
to use ring provided buffers instead. Clean up the legacy code, remove
caching and optimisations. The goal here it to make it simpler and less
of a burden to maintain.

Pavel Begunkov (8):
  io_uring/kbuf: remove legacy kbuf bulk allocation
  io_uring/kbuf: remove legacy kbuf kmem cache
  io_uring/kbuf: move locking into io_kbuf_drop()
  io_uring/kbuf: simplify __io_put_kbuf
  io_uring/kbuf: remove legacy kbuf caching
  io_uring/kbuf: open code __io_put_kbuf()
  io_uring/kbuf: introduce io_kbuf_drop_legacy()
  io_uring/kbuf: uninline __io_put_kbufs

 include/linux/io_uring_types.h |   3 -
 io_uring/io_uring.c            |  11 +--
 io_uring/io_uring.h            |   1 -
 io_uring/kbuf.c                | 172 +++++++++++++++------------------
 io_uring/kbuf.h                | 100 +++----------------
 5 files changed, 89 insertions(+), 198 deletions(-)

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2.47.1