quota: add dqi_dirty_list description to comment of Dquot List Management

Actually there are four lists for dquot management, so add
the description of dqui_dirty_list to comment.

Signed-off-by: Chengguang Xu <cgxu519@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Chengguang Xu 2019-05-06 09:39:03 +08:00 • committed by Jan Kara
commit f44840ad1f