From 1f7771132bd4d75f692f20c2162ca7b5786d3710 Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@suse.cz>
Date: Wed, 24 Mar 2010 20:18:37 -0400
Subject: [PATCH] --- yaml --- r: 189057 b: refs/heads/master c:
 ba69f9ab7df844125898104e854e063b47c26637 h: refs/heads/master i:   189055:
 a85d903278214b149205900f159dacc2534fa1f6 v: v3

---
 [refs]                |  2 +-
 trunk/fs/ext4/super.c | 25 ++++++++++++++++---------
 2 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/[refs] b/[refs]
index 85c00203dedf..7c215b9c3c0e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 37f328eb60a94779dd020084209fc4db2d6444a0
+refs/heads/master: ba69f9ab7df844125898104e854e063b47c26637
diff --git a/trunk/fs/ext4/super.c b/trunk/fs/ext4/super.c
index f4b038f51f31..29c6875d9b4d 100644
--- a/trunk/fs/ext4/super.c
+++ b/trunk/fs/ext4/super.c
@@ -68,7 +68,21 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf);
 static int ext4_unfreeze(struct super_block *sb);
 static void ext4_write_super(struct super_block *sb);
 static int ext4_freeze(struct super_block *sb);
+static int ext4_get_sb(struct file_system_type *fs_type, int flags,
+		       const char *dev_name, void *data, struct vfsmount *mnt);
 
+#if !defined(CONFIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23)
+static struct file_system_type ext3_fs_type = {
+	.owner		= THIS_MODULE,
+	.name		= "ext3",
+	.get_sb		= ext4_get_sb,
+	.kill_sb	= kill_block_super,
+	.fs_flags	= FS_REQUIRES_DEV,
+};
+#define IS_EXT3_SB(sb) ((sb)->s_bdev->bd_holder == &ext3_fs_type)
+#else
+#define IS_EXT3_SB(sb) (0)
+#endif
 
 ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
 			       struct ext4_group_desc *bg)
@@ -2539,7 +2553,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	 * enable delayed allocation by default
 	 * Use -o nodelalloc to turn it off
 	 */
-	set_opt(sbi->s_mount_opt, DELALLOC);
+	if (!IS_EXT3_SB(sb))
+		set_opt(sbi->s_mount_opt, DELALLOC);
 
 	if (!parse_options((char *) data, sb, &journal_devnum,
 			   &journal_ioprio, NULL, 0))
@@ -4096,14 +4111,6 @@ static inline void unregister_as_ext2(void) { }
 #endif
 
 #if !defined(CONFIG_EXT3_FS) && !defined(CONFIG_EXT3_FS_MODULE) && defined(CONFIG_EXT4_USE_FOR_EXT23)
-static struct file_system_type ext3_fs_type = {
-	.owner		= THIS_MODULE,
-	.name		= "ext3",
-	.get_sb		= ext4_get_sb,
-	.kill_sb	= kill_block_super,
-	.fs_flags	= FS_REQUIRES_DEV,
-};
-
 static inline void register_as_ext3(void)
 {
 	int err = register_filesystem(&ext3_fs_type);