• Eric W. Biederman's avatar
    mnt: Don't propagate unmounts to locked mounts · 0c56fe31
    Eric W. Biederman authored
    If the first mount in shared subtree is locked don't unmount the
    shared subtree.
    This is ensured by walking through the mounts parents before children
    and marking a mount as unmountable if it is not locked or it is locked
    but it's parent is marked.
    This allows recursive mount detach to propagate through a set of
    mounts when unmounting them would not reveal what is under any locked
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
pnode.c 11.2 KB