> > Oh yes, and also some controllers will corrupt their data stream if you > > do this during a PIO transfer of a block of ATA data. > > I also believe that to be true, but don't know exactly which hardware > has that issue. Some stuff which needs to block local irqs during the transfer anyway (eg ancient VIA) which therefore doesn't raise that problem much if our locking is careful (right now we block local irq but we can spin_lock happily in these as they are almost always uniprocessor anyway) There is also some intel stuff with this problem (PIIX4 errata 15, 440MX errata 13. - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
