commit d3ed1ceeace311af9973d17a07a114bfaf0ca1b1
author Martin Schwidefsky <schwidefsky@de.ibm.com> Tue Mar 08 11:53:35 2016 +0100
committer Christian Borntraeger <borntraeger@de.ibm.com> Fri Jun 10 12:07:27 2016 +0200
tree 1e9a353c769d89bf8eee9489f931869dcaf0651a
parent c427c42cd612719e8fb8b5891cc9761e7770024e

s390/mm: set and get guest storage key mmap locking

Move the mmap semaphore locking out of set_guest_storage_key
and get_guest_storage_key. This makes the two functions more
like the other ptep_xxx operations and allows to avoid repeated
semaphore operations if multiple keys are read or written.

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