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| author | Andrea Arcangeli <aarcange@redhat.com> | 2011-01-13 15:46:48 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 17:32:41 -0800 |
| commit | 936a5fe6e6148c0b3ea0d792b903847d9b9931a1 (patch) | |
| tree | f0326a5877a89251ff2cb727d5e832e911ed1d18 /include/linux/page-flags.h | |
| parent | 47ad8475c000141eacb3ecda5e5ce4b43a9cd04d (diff) | |
| download | blackbird-op-linux-936a5fe6e6148c0b3ea0d792b903847d9b9931a1.tar.gz blackbird-op-linux-936a5fe6e6148c0b3ea0d792b903847d9b9931a1.zip | |
thp: kvm mmu transparent hugepage support
This should work for both hugetlbfs and transparent hugepages.
[akpm@linux-foundation.org: bring forward PageTransCompound() addition for bisectability]
Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: Avi Kivity <avi@redhat.com>
Cc: Marcelo Tosatti <mtosatti@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/page-flags.h')
| -rw-r--r-- | include/linux/page-flags.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 4835cae71047..907f1605926b 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -409,6 +409,18 @@ static inline void ClearPageCompound(struct page *page) #endif /* !PAGEFLAGS_EXTENDED */ +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +static inline int PageTransCompound(struct page *page) +{ + return PageCompound(page); +} +#else +static inline int PageTransCompound(struct page *page) +{ + return 0; +} +#endif + #ifdef CONFIG_MMU #define __PG_MLOCKED (1 << PG_mlocked) #else |
