fs/adfs: dir: add common directory sync method

adfs_fplus_sync() can be used for both directory formats since we now
have a common way to access the buffer heads, so move it into dir.c
and appropriately rename it.  Remove the directory-format specific
implementations.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/adfs/adfs.h

@@ -125,7 +125,6 @@ struct adfs_dir_ops {
 	int	(*update)(struct adfs_dir *dir, struct object_info *obj);
 	int	(*create)(struct adfs_dir *dir, struct object_info *obj);
 	int	(*remove)(struct adfs_dir *dir, struct object_info *obj);
-	int	(*sync)(struct adfs_dir *dir);
 };
 
 struct adfs_discmap {

fs/adfs/dir.c

@@ -38,6 +38,21 @@ static int adfs_dir_read(struct super_block *sb, u32 indaddr,
 	return ADFS_SB(sb)->s_dir->read(sb, indaddr, size, dir);
 }
 
+static int adfs_dir_sync(struct adfs_dir *dir)
+{
+	int err = 0;
+	int i;
+
+	for (i = dir->nr_buffers - 1; i >= 0; i--) {
+		struct buffer_head *bh = dir->bhs[i];
+		sync_dirty_buffer(bh);
+		if (buffer_req(bh) && !buffer_uptodate(bh))
+			err = -EIO;
+	}
+
+	return err;
+}
+
 void adfs_object_fixup(struct adfs_dir *dir, struct object_info *obj)
 {
 	unsigned int dots, i;
@@ -135,10 +150,8 @@ adfs_dir_update(struct super_block *sb, struct object_info *obj, int wait)
 	printk(KERN_INFO "adfs_dir_update: object %06x in dir %06x\n",
 		 obj->indaddr, obj->parent_id);
 
-	if (!ops->update) {
-		ret = -EINVAL;
-		goto out;
-	}
+	if (!ops->update)
+		return -EINVAL;
 
 	ret = adfs_dir_read(sb, obj->parent_id, 0, &dir);
 	if (ret)
@@ -149,7 +162,7 @@ adfs_dir_update(struct super_block *sb, struct object_info *obj, int wait)
 	write_unlock(&adfs_dir_lock);
 
 	if (wait) {
-		int err = ops->sync(&dir);
+		int err = adfs_dir_sync(&dir);
 		if (!ret)
 			ret = err;
 	}

fs/adfs/dir_f.c

@@ -414,26 +414,9 @@ adfs_f_update(struct adfs_dir *dir, struct object_info *obj)
 #endif
 }
 
-static int
-adfs_f_sync(struct adfs_dir *dir)
-{
-	int err = 0;
-	int i;
-
-	for (i = dir->nr_buffers - 1; i >= 0; i--) {
-		struct buffer_head *bh = dir->bh[i];
-		sync_dirty_buffer(bh);
-		if (buffer_req(bh) && !buffer_uptodate(bh))
-			err = -EIO;
-	}
-
-	return err;
-}
-
 const struct adfs_dir_ops adfs_f_dir_ops = {
 	.read		= adfs_f_read,
 	.setpos		= adfs_f_setpos,
 	.getnext	= adfs_f_getnext,
 	.update		= adfs_f_update,
-	.sync		= adfs_f_sync,
 };

fs/adfs/dir_fplus.c

@@ -179,25 +179,8 @@ adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj)
 	return ret;
 }
 
-static int
-adfs_fplus_sync(struct adfs_dir *dir)
-{
-	int err = 0;
-	int i;
-
-	for (i = dir->nr_buffers - 1; i >= 0; i--) {
-		struct buffer_head *bh = dir->bhs[i];
-		sync_dirty_buffer(bh);
-		if (buffer_req(bh) && !buffer_uptodate(bh))
-			err = -EIO;
-	}
-
-	return err;
-}
-
 const struct adfs_dir_ops adfs_fplus_dir_ops = {
 	.read		= adfs_fplus_read,
 	.setpos		= adfs_fplus_setpos,
 	.getnext	= adfs_fplus_getnext,
-	.sync		= adfs_fplus_sync,
 };