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(parent: 9cbabbc) | patch
powerpc/thp: Use ACCESS_ONCE when loading pmdp
authorAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Wed, 13 Aug 2014 07:02:02 +0000 (12:32 +0530)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 13 Aug 2014 08:20:41 +0000 (18:20 +1000)
commitd4cf9fe6ce01acc85bb6daa5596e8e0d49b0b064
tree943f6aa4fe6c82e64372cbac2f5e2f94dc015419tree | snapshot
parent9cbabbc311644303228fd3a4d23d6af4e61e4a6dcommit | diff
powerpc/thp: Use ACCESS_ONCE when loading pmdp

We would get wrong results in compiler recomputed old_pmd. Avoid
that by using ACCESS_ONCE

CC: <stable@vger.kernel.org>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/mm/hugepage-hash64.c diff | blob | history
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