• Eric W. Biederman's avatar
    mnt: Honor MNT_LOCKED when detaching mounts · ce07d891
    Eric W. Biederman authored
    Modify umount(MNT_DETACH) to keep mounts in the hash table that are
    locked to their parent mounts, when the parent is lazily unmounted.
    In mntput_no_expire detach the children from the hash table, depending
    on mnt_pin_kill in cleanup_mnt to decrement the mnt_count of the children.
    In __detach_mounts if there are any mounts that have been unmounted
    but still are on the list of mounts of a mountpoint, remove their
    children from the mount hash table and those children to the unmounted
    list so they won't linger potentially indefinitely waiting for their
    final mntput, now that the mounts serve no purpose.
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
pnode.h 1.89 KB