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authorDavid Miller <davem@davemloft.net>2012-10-09 03:34:25 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-10-09 11:23:05 +0400
commitb113da65785d5f3f9ff1451ec0fe43d6d76da25b (patch)
tree826a1e6c00faa177299d484a517c4724d87fda14 /arch/s390
parentdbc9fdf063dc4f12af71d7858bd216170129822e (diff)
downloadlinux-b113da65785d5f3f9ff1451ec0fe43d6d76da25b.tar.xz
mm: Add and use update_mmu_cache_pmd() in transparent huge page code.
The transparent huge page code passes a PMD pointer in as the third argument of update_mmu_cache(), which expects a PTE pointer. This never got noticed because X86 implements update_mmu_cache() as a macro and thus we don't get any type checking, and X86 is the only architecture which supports transparent huge pages currently. Before other architectures can support transparent huge pages properly we need to add a new interface which will take a PMD pointer as the third argument rather than a PTE pointer. [akpm@linux-foundation.org: implement update_mm_cache_pmd() for s390] Signed-off-by: David S. Miller <davem@davemloft.net> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Gerald Schaefer <gerald.schaefer@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/pgtable.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index ed14fc2db6e0..979fe3dc0788 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -42,6 +42,7 @@ extern void fault_init(void);
* tables contain all the necessary information.
*/
#define update_mmu_cache(vma, address, ptep) do { } while (0)
+#define update_mmu_cache_pmd(vma, address, ptep) do { } while (0)
/*
* ZERO_PAGE is a global shared page that is always zero; used