On Tue, Feb 27 2007, Xiaoning Ding wrote: > Hi, > > I am reading the source code AS scheduler in 2.6.18(as-ioscheduler.c). > In function as_close_req, variable delay is in millisecond, while > ad->antic_expire is in jiffies. Doesn't the comparison of delay and > ad->antic_expire make any problem? > The related source code is quoted blow: > > if (ad->antic_status == ANTIC_OFF || !ad->ioc_finished) > delay = 0; > else > delay = ((jiffies - ad->antic_start) * 1000) / HZ;
antic_start is in jiffies, the difference is here multiplied by 1000 and divided by HZ to turn it into msecs. so delay is in msecs. -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
