Re: [PATCH V4 0/2] blk-mq: fix race between completion and BLK_EH_RESET_TIMER

[Bart Van Assche <Bart.VanAssche@xxxxxxx>]

On Tue, 2018-04-17 at 00:04 +0800, jianchao.wang wrote:
> diff --git a/block/blk-mq.c b/block/blk-mq.c
> index 16e83e6..be9b435 100644
> --- a/block/blk-mq.c
> +++ b/block/blk-mq.c
> @@ -2077,6 +2077,7 @@ static int blk_mq_init_request(struct blk_mq_tag_set *set, struct request *rq,
>  
>         seqcount_init(&rq->gstate_seq);
>         u64_stats_init(&rq->aborted_gstate_sync);
> +       WRITE_ONCE(rq->gstate, MQ_RQ_GEN_INC);
>         return 0;
>  }

Hello Jianchao,

Your approach looks interesting to me. Can you send an official patch to Jens?

Thanks,

Bart.