Re: [PATCH] blk-mq: Use helpers to access rq->state

[Nikolay Borisov <nborisov@suse.com>]

On 30.08.21 г. 20:29, Bart Van Assche wrote:
<snip>

> Is the above patch complete? I think even with the above patch applied
> there are still two functions in the block layer that use WRITE_ONCE() to
> modify rq->state directly:
> 
> $ git grep -nH 'WRITE_ONCE(rq->state,'
> block/blk-mq.c:532:    WRITE_ONCE(rq->state, MQ_RQ_IDLE);
> block/blk-mq.c:648:    WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);
> block/blk-mq.c:728:    WRITE_ONCE(rq->state, MQ_RQ_IN_FLIGHT);
> block/blk-mq.c:747:        WRITE_ONCE(rq->state, MQ_RQ_IDLE);
> block/blk-mq.c:2416:    WRITE_ONCE(rq->state, MQ_RQ_IDLE);
> include/linux/blk-mq.h:521:    WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);

On just-updated master I get:

$ git grep 'WRITE_ONCE(rq->state,'
block/blk-mq.c: WRITE_ONCE(rq->state, MQ_RQ_IDLE);
block/blk-mq.c: WRITE_ONCE(rq->state, MQ_RQ_IN_FLIGHT);
block/blk-mq.c:         WRITE_ONCE(rq->state, MQ_RQ_IDLE);
block/blk-mq.c: WRITE_ONCE(rq->state, MQ_RQ_IDLE);
include/linux/blk-mq.h: WRITE_ONCE(rq->state, MQ_RQ_COMPLETE);


> 
> Thanks,
> 
> Bart.
>