tree c39abe49adf4ef52fd94342b459c7c011cbd6da2
parent 414d3b07496604a4372466a6b474ca24291a143c
author Martin Schwidefsky <schwidefsky@de.ibm.com> 1457434454 +0100
committer Christian Borntraeger <borntraeger@de.ibm.com> 1466408809 +0200

s390/mm: use RCU for gmap notifier list and the per-mm gmap list

The gmap notifier list and the gmap list in the mm_struct change rarely.
Use RCU to optimize the reader of these lists.

Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>