int exfat_get_dentry_set(struct exfat_entry_set_cache *es,
		struct super_block *sb, struct exfat_chain *p_dir, int entry,
		unsigned int type)
int exfat_get_dentry_set(struct exfat_entry_set_cache *es,
		struct super_block *sb, struct exfat_chain *p_dir, int entry,
		unsigned int num_entries)