/* Invoke writeback_inodes_sb if no writeback is currently underway. Returns 1 if writeback was started, 0 if not.  */
int writeback_inodes_sb_if_idle(struct super_block *sb)
/* Invoke writeback_inodes_sb if no writeback is currently underway. Returns 1 if writeback was started, 0 if not.  */
int writeback_inodes_sb_if_idle(struct super_block *sb)
{
	if (!writeback_in_progress(sb->s_bdi)) {
		writeback_inodes_sb(sb);
		return 1;
	} else
		return 0;
}