---

yaml --- r: 257377 b: refs/heads/master c: f9b5570 h: refs/heads/master i: 257375: af62bae v: v3
git-mirror · Jul 21, 2011 · 849b4bb · 849b4bb
1 parent 4f01ba9
commit 849b4bb
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Showing 2 changed files with 6 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9ea7df534ed2a18157434a496a12cf073ca00c52
+refs/heads/master: f9b5570d7fdedff32a2e78102bfb54cd1b12b289
diff --git a/trunk/fs/direct-io.c b/trunk/fs/direct-io.c
@@ -1200,6 +1200,10 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
 		}
 	}
 
+	/* watch out for a 0 len io from a tricksy fs */
+	if (rw == READ && end == offset)
+		return 0;
+
 	dio = kmalloc(sizeof(*dio), GFP_KERNEL);
 	retval = -ENOMEM;
 	if (!dio)
@@ -1213,8 +1217,7 @@ __blockdev_direct_IO(int rw, struct kiocb *iocb, struct inode *inode,
 
 	dio->flags = flags;
 	if (dio->flags & DIO_LOCKING) {
-		/* watch out for a 0 len io from a tricksy fs */
-		if (rw == READ && end > offset) {
+		if (rw == READ) {
 			struct address_space *mapping =
 					iocb->ki_filp->f_mapping;