commit e0c9c0afd2fc958ffa34b697972721d81df8a56f
author Eric W. Biederman <ebiederm@xmission.com> Wed Apr 01 18:30:06 2015 -0500
committer Eric W. Biederman <ebiederm@xmission.com> Thu Apr 09 11:39:57 2015 -0500
tree d90b2370714bb9bcbcf482039eaf97d0bd79f6b0
parent f53e57975151f54ad8caa1b0ac8a78091cd5700a

mnt: Update detach_mounts to leave mounts connected

Now that it is possible to lazily unmount an entire mount tree and
leave the individual mounts connected to each other add a new flag
UMOUNT_CONNECTED to umount_tree to force this behavior and use
this flag in detach_mounts.

This closes a bug where the deletion of a file or directory could
trigger an unmount and reveal data under a mount point.

Cc: stable@vger.kernel.org
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>