tree a58ad5bb76d65cc8e04f5c7dd1e55460a9cb052b
parent 0887309589824fb1c3744c69a330c99c369124a0
author Christoph Hellwig <hch@lst.de> 1177355287 +0200
committer Arnd Bergmann <arnd@klappe.arndb.de> 1177355933 +0200

[POWERPC] spufs: clear mapping pointers after last close

Make sure the pointers to various mappings are cleared once the last
user stopped using them.  This avoids accessing freed memory when
tearing down the gang directory aswell as optimizing away
pte invalidations if no one uses these.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>