[PATCH] (4/8) ->get_sb() switchover

convert procfs to ->get_sb().  Similar to ext2, except that we use
get_sb_single() instead of get_sb_bdev().  Notice the we _don't_ keep
FS_SINGLE in flags - as the matter of fact, with ->get_sb() FS_SINGLE is
useless. 

fs/proc/inode.c

@@ -213,8 +213,7 @@ printk("proc_iget: using deleted entry %s, count=%d\n", de->name, atomic_read(&d
 	goto out;
 }			
 
-struct super_block *proc_read_super(struct super_block *s,void *data, 
-				    int silent)
+int proc_fill_super(struct super_block *s, void *data, int silent)
 {
 	struct inode * root_inode;
 	struct task_struct *p;
@@ -237,11 +236,11 @@ struct super_block *proc_read_super(struct super_block *s,void *data,
 	if (!s->s_root)
 		goto out_no_root;
 	parse_options(data, &root_inode->i_uid, &root_inode->i_gid);
-	return s;
+	return 0;
 
 out_no_root:
 	printk("proc_read_super: get root inode failed\n");
 	iput(root_inode);
-	return NULL;
+	return -ENOMEM;
 }
 MODULE_LICENSE("GPL");

fs/proc/root.c

@@ -23,7 +23,16 @@ struct proc_dir_entry *proc_net, *proc_bus, *proc_root_fs, *proc_root_driver;
 struct proc_dir_entry *proc_sys_root;
 #endif
 
-static DECLARE_FSTYPE(proc_fs_type, "proc", proc_read_super, FS_SINGLE);
+static struct super_block *proc_get_sb(struct file_system_type *fs_type,
+	int flags, char *dev_name, void *data)
+{
+	return get_sb_single(fs_type, flags, data, proc_fill_super);
+}
+
+static struct file_system_type proc_fs_type = {
+	name:		"proc",
+	get_sb:		proc_get_sb,
+};
 
 extern int __init proc_init_inodecache(void);
 void __init proc_root_init(void)

include/linux/proc_fs.h

@@ -97,7 +97,7 @@ extern struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
 extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);
 
 extern struct vfsmount *proc_mnt;
-extern struct super_block *proc_read_super(struct super_block *,void *,int);
+extern int proc_fill_super(struct super_block *,void *,int);
 extern struct inode * proc_get_inode(struct super_block *, int, struct proc_dir_entry *);
 
 extern int proc_match(int, const char *,struct proc_dir_entry *);