1 files changed, 31 insertions, 9 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 710fed2..f3c6670 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -59,6 +59,7 @@ static struct kset *ext4_kset;
 static struct ext4_lazy_init *ext4_li_info;
 static struct mutex ext4_li_mtx;
 static struct ext4_features *ext4_feat;
+static int ext4_mballoc_ready;
 
 static int ext4_load_journal(struct super_block *, struct ext4_super_block *,
 			     unsigned long journal_devnum);
@@ -845,6 +846,10 @@ static void ext4_put_super(struct super_block *sb)
 		invalidate_bdev(sbi->journal_bdev);
 		ext4_blkdev_remove(sbi);
 	}
+	if (sbi->s_mb_cache) {
+		ext4_xattr_destroy_cache(sbi->s_mb_cache);
+		sbi->s_mb_cache = NULL;
+	}
 	if (sbi->s_mmp_tsk)
 		kthread_stop(sbi->s_mmp_tsk);
 	sb->s_fs_info = NULL;
@@ -940,7 +945,7 @@ static void init_once(void *foo)
 	inode_init_once(&ei->vfs_inode);
 }
 
-static int init_inodecache(void)
+static int __init init_inodecache(void)
 {
 	ext4_inode_cachep = kmem_cache_create("ext4_inode_cache",
 					     sizeof(struct ext4_inode_info),
@@ -3575,6 +3580,16 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 		       "feature flags set on rev 0 fs, "
 		       "running e2fsck is recommended");
 
+	if (es->s_creator_os == cpu_to_le32(EXT4_OS_HURD)) {
+		set_opt2(sb, HURD_COMPAT);
+		if (EXT4_HAS_INCOMPAT_FEATURE(sb,
+					      EXT4_FEATURE_INCOMPAT_64BIT)) {
+			ext4_msg(sb, KERN_ERR,
+				 "The Hurd can't support 64-bit file systems");
+			goto failed_mount;
+		}
+	}
+
 	if (IS_EXT2_SB(sb)) {
 		if (ext2_feature_set_ok(sb))
 			ext4_msg(sb, KERN_INFO, "mounting ext2 file system "
@@ -4010,6 +4025,14 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
 	percpu_counter_set(&sbi->s_dirtyclusters_counter, 0);
 
 no_journal:
+	if (ext4_mballoc_ready) {
+		sbi->s_mb_cache = ext4_xattr_create_cache(sb->s_id);
+		if (!sbi->s_mb_cache) {
+			ext4_msg(sb, KERN_ERR, "Failed to create an mb_cache");
+			goto failed_mount_wq;
+		}
+	}
+
 	/*
 	 * Get the # of file system overhead blocks from the
 	 * superblock if present.
@@ -4835,6 +4858,9 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
 		}
 
 		if (*flags & MS_RDONLY) {
+			err = sync_filesystem(sb);
+			if (err < 0)
+				goto restore_opts;
 			err = dquot_suspend(sb, -1);
 			if (err < 0)
 				goto restore_opts;
@@ -5516,11 +5542,9 @@ static int __init ext4_init_fs(void)
 
 	err = ext4_init_mballoc();
 	if (err)
-		goto out3;
-
-	err = ext4_init_xattr();
-	if (err)
 		goto out2;
+	else
+		ext4_mballoc_ready = 1;
 	err = init_inodecache();
 	if (err)
 		goto out1;
@@ -5536,10 +5560,9 @@ out:
 	unregister_as_ext3();
 	destroy_inodecache();
 out1:
-	ext4_exit_xattr();
-out2:
+	ext4_mballoc_ready = 0;
 	ext4_exit_mballoc();
-out3:
+out2:
 	ext4_exit_feat_adverts();
 out4:
 	if (ext4_proc_root)
@@ -5562,7 +5585,6 @@ static void __exit ext4_exit_fs(void)
 	unregister_as_ext3();
 	unregister_filesystem(&ext4_fs_type);
 	destroy_inodecache();
-	ext4_exit_xattr();
 	ext4_exit_mballoc();
 	ext4_exit_feat_adverts();
 	remove_proc_entry("fs/ext4", NULL);