From 021740dc30d184e3b0fa7679936e65a56090c425 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Tue, 19 Apr 2005 13:29:18 -0700 Subject: [PATCH] freepgt: hugetlb area is clean Once we're strict about clearing away page tables, hugetlb_prefault can assume there are no page tables left within its range. Since the other arches continue if !pte_none here, let i386 do the same. Signed-off-by: Hugh Dickins Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/i386/mm/hugetlbpage.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) (limited to 'arch/i386') diff --git a/arch/i386/mm/hugetlbpage.c b/arch/i386/mm/hugetlbpage.c index a8c4514..171fc92 100644 --- a/arch/i386/mm/hugetlbpage.c +++ b/arch/i386/mm/hugetlbpage.c @@ -249,15 +249,8 @@ int hugetlb_prefault(struct address_space *mapping, struct vm_area_struct *vma) goto out; } - if (!pte_none(*pte)) { - pmd_t *pmd = (pmd_t *) pte; - - page = pmd_page(*pmd); - pmd_clear(pmd); - mm->nr_ptes--; - dec_page_state(nr_page_table_pages); - page_cache_release(page); - } + if (!pte_none(*pte)) + continue; idx = ((addr - vma->vm_start) >> HPAGE_SHIFT) + (vma->vm_pgoff >> (HPAGE_SHIFT - PAGE_SHIFT)); -- cgit v1.1