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| author | Hugh Dickins <hugh@veritas.com> | 2005-04-19 13:29:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org.(none)> | 2005-04-19 13:29:18 -0700 |
| commit | 021740dc30d184e3b0fa7679936e65a56090c425 (patch) | |
| tree | c31bd23fe74038b4bab5148e17e07745b75b453d /arch/i386 | |
| parent | 146425a316fb937fbdcac018b34a23c67d12214b (diff) | |
| download | blackbird-op-linux-021740dc30d184e3b0fa7679936e65a56090c425.tar.gz blackbird-op-linux-021740dc30d184e3b0fa7679936e65a56090c425.zip | |
[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 <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/i386')
| -rw-r--r-- | arch/i386/mm/hugetlbpage.c | 11 |
1 files changed, 2 insertions, 9 deletions
diff --git a/arch/i386/mm/hugetlbpage.c b/arch/i386/mm/hugetlbpage.c index a8c45143088b..171fc925e1e4 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)); |
