On 09/17/2014 01:09 PM, David Hildenbrand wrote: >>> 0. That should already be sufficient to hinder blk_mq_tag_to_rq and the calling >>> method to do the wrong thing. >> >> Yes, clearing rq->cmd_flags should be enough. >> >> And looks better to move rq initialization to __blk_mq_free_request() >> too, otherwise timeout still may see old cmd_flags and rq->q before >> rq's new initialization. > > Yes, __blk_mq_free_request() should also reset at least rq->cmd_flags, and I > think we can remove the initialization from __blk_mq_alloc_request(). And then we come full circle, that's how the code originally started out (and it is the saner way to do things). So yes, I'd greatly applaud that. -- Jens Axboe -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
