Re: [PATCH 1/1] blk-mq: reinit q->tag_set_list entry only after grace period

[Bart Van Assche]

On Sun, 2018-06-10 at 22:38 +0200, Roman Pen wrote:
> It is not allowed to reinit q->tag_set_list list entry while RCU grace
> period has not completed yet, otherwise the following soft lockup in
> blk_mq_sched_restart() happens:

Please add the following:

Fixes: 705cda97ee3a ("blk-mq: Make it safe to use RCU to iterate over 
blk_mq_tag_set.tag_list")
Cc: sta...@vger.kernel.org

Anyway:

Reviewed-by: Bart Van Assche <bart.vanass...@wdc.com>