[git pull] epoll fixes

[Al Viro]

	Several race fixes in epoll.

The following changes since commit 77f4689de17c0887775bb77896f4cc11a39bf848:

  fix regression in "epoll: Keep a reference on files added to the check list" (2020-09-02 11:30:48 -0400)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git work.epoll

for you to fetch changes up to 3701cb59d892b88d569427586f01491552f377b1:

  ep_create_wakeup_source(): dentry name can change under you... (2020-09-24 19:41:58 -0400)

----------------------------------------------------------------
Al Viro (4):
      epoll: do not insert into poll queues until all sanity checks are done
      epoll: replace ->visited/visited_list with generation count
      epoll: EPOLL_CTL_ADD: close the race in decision to take fast path
      ep_create_wakeup_source(): dentry name can change under you...

 fs/eventpoll.c | 72 +++++++++++++++++++++++++---------------------------------
 1 file changed, 31 insertions(+), 41 deletions(-)