[PATCH v2 0/8] allocated requests based drain and fixes

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

Patches 1-7 are fixes and preparations. Patch 8 implements
draining based on the number of allocated requests, which
is simpler and remove cq_extra accounting overhead. 

v2: fix executing still drained reqs on spurious calls to
    io_queue_deferred() (Patch 2)

    Only clear ->drain_active after flushing, if a non drain
    request got flushed.

Pavel Begunkov (8):
  io_uring: account drain memory to cgroup
  io_uring: fix spurious drain flushing
  io_uring: simplify drain ret passing
  io_uring: remove drain prealloc checks
  io_uring: consolidate drain seq checking
  io_uring: open code io_account_cq_overflow()
  io_uring: count allocated requests
  io_uring: drain based on allocates reqs

 include/linux/io_uring_types.h |   3 +-
 io_uring/io_uring.c            | 137 ++++++++++++++-------------------
 io_uring/io_uring.h            |   3 +-
 3 files changed, 62 insertions(+), 81 deletions(-)

-- 
2.49.0