tree 3dd0b69084ab6ecc71caa6a110c353597a9df260
parent a6bf2bb03e5bad7e9289d80ecb5faac11630c7ab
author Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> 1370477645 -0700
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1371711308 +1000

mm/THP: don't use HPAGE_SHIFT in transparent hugepage code

For architectures like powerpc that support multiple explicit hugepage
sizes, HPAGE_SHIFT indicate the default explicit hugepage shift.  For THP
to work the hugepage size should be same as PMD_SIZE.  So use PMD_SHIFT
directly.  So move the define outside CONFIG_TRANSPARENT_HUGEPAGE #ifdef
because we want to use these defines in generic code with if
(pmd_trans_huge()) conditional.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>