diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/hugetlb.h | 2 | ||||
| -rw-r--r-- | include/linux/mm.h | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index edfca4278319..53fc34f930d0 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -454,7 +454,7 @@ static inline pte_t arch_make_huge_pte(pte_t entry, struct vm_area_struct *vma, static inline struct hstate *page_hstate(struct page *page) { VM_BUG_ON_PAGE(!PageHuge(page), page); - return size_to_hstate(PAGE_SIZE << compound_order(page)); + return size_to_hstate(page_size(page)); } static inline unsigned hstate_index_to_shift(unsigned index) diff --git a/include/linux/mm.h b/include/linux/mm.h index 6e79b3df1582..d46d5585e2a2 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -805,6 +805,12 @@ static inline void set_compound_order(struct page *page, unsigned int order) page[1].compound_order = order; } +/* Returns the number of bytes in this potentially compound page. */ +static inline unsigned long page_size(struct page *page) +{ + return PAGE_SIZE << compound_order(page); +} + void free_compound_page(struct page *page); #ifdef CONFIG_MMU |