1 files changed, 31 insertions, 9 deletions

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 710fed2377d4..f3c667091618 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);