diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-02 16:07:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-07-02 16:07:52 -0700 |
| commit | 3e42dee676e8cf5adca817b1518b2e99d1c138ff (patch) | |
| tree | 23580fe97d1e452667b507c2aadb99877d0b574c /include | |
| parent | 42daabf62bfa3c00974b43f030dadcf704c0db59 (diff) | |
| parent | 88c8004fd3a5fdd2378069de86b90b21110d33a4 (diff) | |
Merge branch 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking changes from Ingo Molnar:
"Four miscellanous standalone fixes for futexes, rtmutexes and
Kconfig.locks."
* 'core-locking-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Use freezable blocking call
futex: Take hugepages into account when generating futex_key
rtmutex: Document rt_mutex_adjust_prio_chain()
locking: Fix copy/paste errors of "ARCH_INLINE_*_UNLOCK_BH"
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/hugetlb.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 6b4890fa57e7..feaf0c7fb7d8 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -358,6 +358,17 @@ static inline int hstate_index(struct hstate *h) return h - hstates; } +pgoff_t __basepage_index(struct page *page); + +/* Return page->index in PAGE_SIZE units */ +static inline pgoff_t basepage_index(struct page *page) +{ + if (!PageCompound(page)) + return page->index; + + return __basepage_index(page); +} + #else /* CONFIG_HUGETLB_PAGE */ struct hstate {}; #define alloc_huge_page_node(h, nid) NULL @@ -378,6 +389,11 @@ static inline unsigned int pages_per_huge_page(struct hstate *h) } #define hstate_index_to_shift(index) 0 #define hstate_index(h) 0 + +static inline pgoff_t basepage_index(struct page *page) +{ + return page->index; +} #endif /* CONFIG_HUGETLB_PAGE */ #endif /* _LINUX_HUGETLB_H */ |