---

yaml --- r: 221721 b: refs/heads/master c: 8d056cb h: refs/heads/master i: 221719: 51a2fc3 v: v3
git-mirror · Nov 12, 2010 · 4d45d87 · 4d45d87
1 parent 8206d03
commit 4d45d87
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Showing 2 changed files with 4 additions and 1 deletion.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 834b40380e93e36f1c9b48ec1d280cebe3d7bd8c
+refs/heads/master: 8d056cb965b8fb7c53c564abf28b1962d1061cd3
diff --git a/trunk/mm/filemap.c b/trunk/mm/filemap.c
@@ -1029,6 +1029,9 @@ static void do_generic_file_read(struct file *filp, loff_t *ppos,
 				goto page_not_up_to_date;
 			if (!trylock_page(page))
 				goto page_not_up_to_date;
+			/* Did it get truncated before we got the lock? */
+			if (!page->mapping)
+				goto page_not_up_to_date_locked;
 			if (!mapping->a_ops->is_partially_uptodate(page,
 								desc, offset))
 				goto page_not_up_to_date_locked;