Hmmm... | /** | * clone_union_tree - Clone all union-able mounts at this mountpoint | * @topmost: vfsmount of topmost layer | * @mntpnt: target of union mount | * | * Given the target mountpoint of a union mount, clone all the mounts at that | * mountpoint (well, pathname) that qualify as a union lower layer. ... Is this so that the unionmount can survive MS_BIND and MS_MOVE? | * Returns error if any of the mounts or submounts mounted on or below this | * pathname are unsuitable for union mounting. This means you can't construct | * a union mount at the root of an existing mount without unioning it. If I understand this correctly, I'd rephrase this to be: * Returns an error if any of the stack of mounts or submounts currently * mounted on @mntpnt are unsuitable for union mounting. This means you cannot * construct a union mount over the root of an existing mount without including * it in the union or having it prevent the union. David -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
