tree 62c2fd45dcb202318efe4b7dc3616b8e867a3aba
parent 878b8fd86ddc7d5099413bd194ce467dcc585e1b
author Eric W. Biederman <ebiederm@xmission.com> 1358490259 -0800
committer Eric W. Biederman <ebiederm@xmission.com> 1362996795 -0700

Break fs/namespace.c so I remember the mount propogation bug that can introduce mount namespace loops.

Currently younger mount namespaces mounted into older mount namespaces are allowed.

Ugh.

unsharing a mount namespace as well as propogating a mount can cause
trouble.

Mount propogation is royal pain to think about and deal with.  I
create mount namespaces so my mounts are different not so my set of
mounts is the same.