s390/pgtable: make pgste lock an explicit barrier
authorChristian Borntraeger <borntraeger@de.ibm.com>
Wed, 5 Jun 2013 07:25:34 +0000 (09:25 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Wed, 5 Jun 2013 15:36:21 +0000 (17:36 +0200)
commita8f6e7f7953d1baa05a346bf7cee44f1d022c63d
treef2e13e105946dac24116a7eb34a93f26f48652c0
parent3a82603be4f5523ce21dd468a323aa36ff845f6d
s390/pgtable: make pgste lock an explicit barrier

Getting and Releasing the pgste lock has lock semantics. Make the
code an explicit barrier.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
arch/s390/include/asm/pgtable.h