From b20ce5e03b936be077463015661dcf52be274e5b Mon Sep 17 00:00:00 2001 From: "Kirill A. Shutemov" Date: Fri, 15 Jan 2016 16:54:37 -0800 Subject: mm: prepare page_referenced() and page_idle to new THP refcounting Both page_referenced() and page_idle_clear_pte_refs_one() assume that THP can only be mapped with PMD, so there's no reason to look on PTEs for PageTransHuge() pages. That's no true anymore: THP can be mapped with PTEs too. The patch removes PageTransHuge() test from the functions and opencode page table check. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Kirill A. Shutemov Cc: Vladimir Davydov Cc: Andrea Arcangeli Cc: Hugh Dickins Cc: Naoya Horiguchi Cc: Sasha Levin Cc: Minchan Kim Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/huge_mm.h | 5 ----- 1 file changed, 5 deletions(-) (limited to 'include/linux/huge_mm.h') diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h index 7aec5ee..72cd942 100644 --- a/include/linux/huge_mm.h +++ b/include/linux/huge_mm.h @@ -48,11 +48,6 @@ enum transparent_hugepage_flag { #endif }; -extern pmd_t *page_check_address_pmd(struct page *page, - struct mm_struct *mm, - unsigned long address, - spinlock_t **ptl); - #define HPAGE_PMD_ORDER (HPAGE_PMD_SHIFT-PAGE_SHIFT) #define HPAGE_PMD_NR (1<