[GIT PULL] io_uring fixes for 5.15-rc3

[Jens Axboe <axboe@kernel.dk>]

Hi Linus,

This one looks a bit bigger than it is, but that's mainly because 2/3 of
it is enabling IORING_OP_CLOSE to close direct file descriptors. We've
had a few folks using them and finding it confusing that the way to
close them is through using -1 for file update, this just brings API
symmetry for direct descriptors. Hence I think we should just do this
now and have a better API for 5.15 release. There's some room for
de-duplicating the close code, but we're leaving that for the next merge
window.

Outside of that, just small fixes:

- Poll race fixes (Hao)

- io-wq core dump exit fix (me)

- Reschedule around potentially intensive tctx and buffer iterators on
  teardown (me)

- Fix for always ending up punting files update to io-wq (me)

- Put the provided buffer meta data under memcg accounting (me)

- Tweak for io_write(), removing dead code that was added with the
  iterator changes in this release (Pavel)

Please pull!


The following changes since commit e4e737bb5c170df6135a127739a9e6148ee3da82:

  Linux 5.15-rc2 (2021-09-19 17:28:22 -0700)

are available in the Git repository at:

  git://git.kernel.dk/linux-block.git tags/io_uring-5.15-2021-09-25

for you to fetch changes up to 7df778be2f61e1a23002d1f2f5d6aaf702771eb8:

  io_uring: make OP_CLOSE consistent with direct open (2021-09-24 14:07:54 -0600)

----------------------------------------------------------------
io_uring-5.15-2021-09-25

----------------------------------------------------------------
Hao Xu (3):
      io_uring: fix race between poll completion and cancel_hash insertion
      io_uring: fix missing set of EPOLLONESHOT for CQ ring overflow
      io_uring: fix potential req refcount underflow

Jens Axboe (4):
      io-wq: ensure we exit if thread group is exiting
      io_uring: allow conditional reschedule for intensive iterators
      io_uring: put provided buffer meta data under memcg accounting
      io_uring: don't punt files update to io-wq unconditionally

Pavel Begunkov (2):
      io_uring: kill extra checks in io_write()
      io_uring: make OP_CLOSE consistent with direct open

 fs/io-wq.c    |  3 ++-
 fs/io_uring.c | 85 ++++++++++++++++++++++++++++++++++++++++++++++++-----------
 2 files changed, 72 insertions(+), 16 deletions(-)

-- 
Jens Axboe