---

yaml --- r: 264370 b: refs/heads/master c: 486cf46 h: refs/heads/master v: v3
git-mirror · Oct 20, 2011 · 5cea1d7 · 5cea1d7
1 parent 721c172
commit 5cea1d7
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Showing 2 changed files with 5 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: e4fcd69c9e4e273352e0f87cabd9648606da0c3e
+refs/heads/master: 486cf46f3f9be5f2a966016c1a8fe01e32cde09e
diff --git a/trunk/mm/migrate.c b/trunk/mm/migrate.c
@@ -120,10 +120,10 @@ static int remove_migration_pte(struct page *new, struct vm_area_struct *vma,
 
 		ptep = pte_offset_map(pmd, addr);
 
-		if (!is_swap_pte(*ptep)) {
-			pte_unmap(ptep);
-			goto out;
-		}
+		/*
+		 * Peek to check is_swap_pte() before taking ptlock?  No, we
+		 * can race mremap's move_ptes(), which skips anon_vma lock.
+		 */
 
 		ptl = pte_lockptr(mm, pmd);
 	}