diff options
| -rw-r--r-- | mm/page_vma_mapped.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c index 95601561439532..ae3c2a35d61b7c 100644 --- a/mm/page_vma_mapped.c +++ b/mm/page_vma_mapped.c @@ -30,6 +30,14 @@ static bool map_pte(struct page_vma_mapped_walk *pvmw) return true; } +static inline bool pfn_in_hpage(struct page *hpage, unsigned long pfn) +{ + unsigned long hpage_pfn = page_to_pfn(hpage); + + /* THP can be referenced by any subpage */ + return pfn >= hpage_pfn && pfn - hpage_pfn < hpage_nr_pages(hpage); +} + /** * check_pte - check if @pvmw->page is mapped at the @pvmw->pte * @@ -78,14 +86,7 @@ static bool check_pte(struct page_vma_mapped_walk *pvmw) pfn = pte_pfn(*pvmw->pte); } - if (pfn < page_to_pfn(pvmw->page)) - return false; - - /* THP can be referenced by any subpage */ - if (pfn - page_to_pfn(pvmw->page) >= hpage_nr_pages(pvmw->page)) - return false; - - return true; + return pfn_in_hpage(pvmw->page, pfn); } /** |