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authorJohannes Weiner <hannes@cmpxchg.org>2011-01-14 02:47:02 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-14 04:32:44 +0300
commit0ca1634d4143c3579273ca53b993df19f5c98e92 (patch)
treed566a582357a9e1528d1783566bfda4375c7e566 /include
parentf2d6bfe9ff0acec30b713614260e78b03d20e909 (diff)
downloadlinux-0ca1634d4143c3579273ca53b993df19f5c98e92.tar.xz
thp: mincore transparent hugepage support
Handle transparent huge page pmd entries natively instead of splitting them into subpages. 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')
-rw-r--r--include/linux/huge_mm.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 43a694ef8904..25125fb6acf7 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -19,6 +19,9 @@ extern struct page *follow_trans_huge_pmd(struct mm_struct *mm,
extern int zap_huge_pmd(struct mmu_gather *tlb,
struct vm_area_struct *vma,
pmd_t *pmd);
+extern int mincore_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd,
+ unsigned long addr, unsigned long end,
+ unsigned char *vec);
enum transparent_hugepage_flag {
TRANSPARENT_HUGEPAGE_FLAG,