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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2016-01-15 16:54:37 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-01-15 17:56:32 -0800
commitb20ce5e03b936be077463015661dcf52be274e5b (patch)
tree1004a054c0263a471ef79a7cd84fea904a71b655 /include/linux/huge_mm.h
parente90309c9f7722db4ff5bce3b9e6e04d1460f2553 (diff)
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op-kernel-dev-b20ce5e03b936be077463015661dcf52be274e5b.tar.gz
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 <kirill.shutemov@linux.intel.com> Cc: Vladimir Davydov <vdavydov@parallels.com> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Sasha Levin <sasha.levin@oracle.com> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/huge_mm.h')
-rw-r--r--include/linux/huge_mm.h5
1 files changed, 0 insertions, 5 deletions
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<<HPAGE_PMD_ORDER)
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