On Mon, Sep 26, 2016 at 11:26:50AM -0700, Bart Van Assche wrote: > Ensure that all ongoing dm_mq_queue_rq() and dm_mq_requeue_request() > calls have stopped before setting the "queue stopped" flag. This > allows to remove the "queue stopped" test from dm_mq_queue_rq() and > dm_mq_requeue_request(). This patch fixes a race condition because > dm_mq_queue_rq() is called without holding the queue lock and hence > BLK_MQ_S_STOPPED can be set at any time while dm_mq_queue_rq() is > in progress. > > Signed-off-by: Bart Van Assche <bart.vanassche@xxxxxxxxxxx> > Cc: Mike Snitzer <snitzer@xxxxxxxxxx> > --- Looks good, Reviewed-by: Johannes Thumshirn <jthumshirn@xxxxxxx> -- Johannes Thumshirn Storage jthumshirn@xxxxxxx +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850 -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
