---

yaml --- r: 356550 b: refs/heads/master c: 4db0e95 h: refs/heads/master v: v3
git-mirror · Feb 24, 2013 · 4a5d19a · 4a5d19a
1 parent 41825ef
commit 4a5d19a
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Showing 2 changed files with 12 additions and 2 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: af8fae7c08862bb85c5cf445bf9b36314b82111f
+refs/heads/master: 4db0e950c5b78586bea9e1b027be849631f89a17
diff --git a/trunk/mm/memory-failure.c b/trunk/mm/memory-failure.c
@@ -1039,7 +1039,17 @@ int memory_failure(unsigned long pfn, int trapno, int flags)
 		return 0;
 	}
 
-	nr_pages = 1 << compound_trans_order(hpage);
+	/*
+	 * Currently errors on hugetlbfs pages are measured in hugepage units,
+	 * so nr_pages should be 1 << compound_order.  OTOH when errors are on
+	 * transparent hugepages, they are supposed to be split and error
+	 * measurement is done in normal page units.  So nr_pages should be one
+	 * in this case.
+	 */
+	if (PageHuge(p))
+		nr_pages = 1 << compound_order(hpage);
+	else /* normal page or thp */
+		nr_pages = 1;
 	atomic_long_add(nr_pages, &num_poisoned_pages);
 
 	/*