[PATCH 0/4] address some hangs

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

1/4 and 2/4 are for hangs during files unregister.

The other two fix not running task works during cancellation.
Instead of patching task_work it moves io_uring_files_cancel()
before PF_EXITING, should be less intrusive. Was there a
particular reasong for doing that in exit_files()?

Pavel Begunkov (4):
  io_uring: add a helper for setting a ref node
  io_uring: fix io_sqe_files_unregister() hangs
  kernel/io_uring: cancel io_uring before task works
  io_uring: cancel requests enqueued as task_work's

 fs/file.c     |  2 --
 fs/io_uring.c | 54 ++++++++++++++++++++++++++++++++++-----------------
 kernel/exit.c |  2 ++
 3 files changed, 38 insertions(+), 20 deletions(-)

-- 
2.24.0