diff options
| author |   Johannes Weiner <hannes@cmpxchg.org> | 2011-01-13 15:47:01 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 17:32:44 -0800 |
| commit | f2d6bfe9ff0acec30b713614260e78b03d20e909 (patch) | |
| tree | 835dd9f4167513d94ae542cf92347ea98bff5ddc /include/linux/mm.h | |
| parent | thp: remove PG_buddy (diff) | |
| download | linux-dev-f2d6bfe9ff0acec30b713614260e78b03d20e909.tar.xz linux-dev-f2d6bfe9ff0acec30b713614260e78b03d20e909.zip | |
thp: add x86 32bit support
Add support for transparent hugepages to x86 32bit.
Share the same VM_ bitflag for VM_MAPPED_COPY. mm/nommu.c will never
support transparent hugepages.
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 7ab7d2b60041..9c2695beab86 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -102,7 +102,11 @@ extern unsigned int kobjsize(const void *objp); #define VM_NORESERVE 0x00200000 /* should the VM suppress accounting */ #define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */ #define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */ +#ifndef CONFIG_TRANSPARENT_HUGEPAGE #define VM_MAPPED_COPY 0x01000000 /* T if mapped copy of data (nommu mmap) */ +#else +#define VM_HUGEPAGE 0x01000000 /* MADV_HUGEPAGE marked this vma */ +#endif #define VM_INSERTPAGE 0x02000000 /* The vma has had "vm_insert_page()" done on it */ #define VM_ALWAYSDUMP 0x04000000 /* Always include in core dumps */ @@ -111,9 +115,6 @@ extern unsigned int kobjsize(const void *objp); #define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */ #define VM_PFN_AT_MMAP 0x40000000 /* PFNMAP vma that is fully mapped at mmap time */ #define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ -#if BITS_PER_LONG > 32 -#define VM_HUGEPAGE 0x100000000UL /* MADV_HUGEPAGE marked this vma */ -#endif /* Bits set in the VMA until the stack is in its final location */ #define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ) |