mm: actually clear pmd_numa before invalidating

Commit 67f87463d3a3 ("mm: clear pmd_numa before invalidating") cleared
the NUMA bit in a copy of the PMD entry, but then wrote back the
original

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index a8b9199..dfb79e0 100644 (file)
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -195,7 +195,7 @@ void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
        pmd_t entry = *pmdp;
        if (pmd_numa(entry))
                entry = pmd_mknonnuma(entry);
-       set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(*pmdp));
+       set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(entry));
        flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */