[git pull] struct mount leak fix

[Al Viro]

        Braino introduced in "switch the remnants of releasing the mountpoint
away from fs_pin"; the most visible result is leaking struct mount when
mounting btrfs, making it impossible to shut down.

The following changes since commit 18253e034d2aeee140f82fc9fe89c4bce5c81799:

  Merge branch 'work.dcache2' of 
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs (2019-07-20 09:15:51 
-0700)

are available in the git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git fixes

for you to fetch changes up to 19a1c4092e7ca1ad1a72ac5535f902c483372cd5:

  fix the struct mount leak in umount_tree() (2019-07-26 07:59:06 -0400)

----------------------------------------------------------------
Al Viro (1):
      fix the struct mount leak in umount_tree()

 fs/namespace.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)