Say Evgeniy, something I was curious about but forgot to ask you earlier... On Wednesday 08 August 2007 03:17, Evgeniy Polyakov wrote: > ...All oerations are not atomic, since we do not care about precise > number of bios, but a fact, that we are close or close enough to the > limit. > ... in bio->endio > + q->bio_queued--; In your proposed patch, what prevents the race: cpu1 cpu2 read q->bio_queued q->bio_queued-- write q->bio_queued - 1 Whoops! We leaked a throttle count. Regards, Daniel - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html