ext4: fix a wrong comment in __mb_check_buddy()

The comment says the bit should be 0, but the after code assert the
bit to be 1.  This makes people confused, so fix it.

Signed-off-by: Robin Dong <sanbai@taobao.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 2bb1ddc5c30b33a3c7d64462abfc6ff80dd9fd5f..e2d8be8f28bfb8555644bef5100b2f9b8c2cbe9a 100644 (file)
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -581,7 +581,7 @@ static int __mb_check_buddy(struct ext4_buddy *e4b, char *file,
                                continue;
                        }
 
-                       /* both bits in buddy2 must be 0 */
+                       /* both bits in buddy2 must be 1 */
                        MB_CHECK_ASSERT(mb_test_bit(i << 1, buddy2));
                        MB_CHECK_ASSERT(mb_test_bit((i << 1) + 1, buddy2));