Commit f1771ffa authored by Al Viro's avatar Al Viro
Browse files

Simplify failure exits in s390/hypfs fill_super() 



->kill_sb() will be called after any failure exit, so no need
to duplicate what it can do.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent fc7bed8c

arch/s390/hypfs/inode.c

+13 −29
Original line number Diff line number Diff line
@@ -288,46 +288,30 @@ static int hypfs_fill_super(struct super_block *sb, void *data, int silent) 
	sb->s_blocksize_bits = PAGE_CACHE_SHIFT;

	sb->s_magic = HYPFS_MAGIC;

	sb->s_op = &hypfs_s_ops;

	if (hypfs_parse_options(data, sb)) {

		rc = -EINVAL;

		goto err_alloc;

	}

	if (hypfs_parse_options(data, sb))

		return -EINVAL;

	root_inode = hypfs_make_inode(sb, S_IFDIR | 0755);

	if (!root_inode) {

		rc = -ENOMEM;

		goto err_alloc;

	}

	if (!root_inode)

		return -ENOMEM;

	root_inode->i_op = &simple_dir_inode_operations;

	root_inode->i_fop = &simple_dir_operations;

	root_dentry = d_alloc_root(root_inode);

	sb->s_root = root_dentry = d_alloc_root(root_inode);

	if (!root_dentry) {

		iput(root_inode);

		rc = -ENOMEM;

		goto err_alloc;

		return -ENOMEM;

	}

	if (MACHINE_IS_VM)

		rc = hypfs_vm_create_files(sb, root_dentry);

	else

		rc = hypfs_diag_create_files(sb, root_dentry);

	if (rc)

		goto err_tree;

		return rc;

	sbi->update_file = hypfs_create_update_file(sb, root_dentry);

	if (IS_ERR(sbi->update_file)) {

		rc = PTR_ERR(sbi->update_file);

		goto err_tree;

	}

	if (IS_ERR(sbi->update_file))

		return PTR_ERR(sbi->update_file);

	hypfs_update_update(sb);

	sb->s_root = root_dentry;

	pr_info("Hypervisor filesystem mounted\n");

	return 0;



err_tree:

	hypfs_delete_tree(root_dentry);

	d_genocide(root_dentry);

	dput(root_dentry);

err_alloc:

	kfree(sbi);

	return rc;

}



static int hypfs_get_super(struct file_system_type *fst, int flags,
@@ -340,12 +324,12 @@ static void hypfs_kill_super(struct super_block *sb) 
{

	struct hypfs_sb_info *sb_info = sb->s_fs_info;



	if (sb->s_root) {

	if (sb->s_root)

		hypfs_delete_tree(sb->s_root);

	if (sb_info->update_file)

		hypfs_remove(sb_info->update_file);

	kfree(sb->s_fs_info);

	sb->s_fs_info = NULL;

	}

	kill_litter_super(sb);

}