![]() | ||||||||||
Messages in this thread |
On Mon, Jan 21 2002, Andre Hedrick wrote: > > On Mon, Jan 21, 2002 at 03:53:20PM -0800, Andre Hedrick wrote: > > > On Mon, 21 Jan 2002, Vojtech Pavlik wrote: > > > Okay if the execution of the command block is ATOMIC, and we want to stop > > > an ATOMIC operation to go alter buffers? > > > > YES! I think you got it! Because atomic here doesn't mean 'do it all as > > soon as possible with no delay', but 'do nothing else on the ATA bus > > inbetween'. > > In order to do this you can not issue a sector request larger than an > addressable buffer, since the request walking of the rq->buffer is not > allowed. It's not that it's not allowed, it's that it doesn't work the way you want it. ->buffer is just the first segment, which is 8 sectors max, that much is correct. But nothing prevents your from ending the front of the request and continuing and the drive will never know. Just see task_mulin_intr. -- Jens Axboe - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ | |||||||||
| Last update: 2005-03-22 11:15 [W:0.243 / U:0.040 seconds] ©2003-2008 Jasper Spaans | ||||||||||