s390/mm: allow to check if a gmap shadow is valid
authorDavid Hildenbrand <dahi@linux.vnet.ibm.com>
Fri, 27 May 2016 16:57:33 +0000 (18:57 +0200)
committerChristian Borntraeger <borntraeger@de.ibm.com>
Mon, 20 Jun 2016 07:55:16 +0000 (09:55 +0200)
commit5b6c963bcef5c3a857e3f8ba84aa9380069fc95f
treeea98bc0e529c3e1b7c305e1710f9ae24d1657752
parent4a49443924731823da2e9b3ae9311b74a34e7ed8
s390/mm: allow to check if a gmap shadow is valid

It will be very helpful to have a mechanism to check without any locks
if a given gmap shadow is still valid and matches the given properties.

Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
arch/s390/include/asm/gmap.h
arch/s390/mm/gmap.c