On Mon, Feb 27 2006, Linus Torvalds wrote: > > > On Tue, 28 Feb 2006, Tejun Heo wrote: > > > Hello, Mark. > > > > Mark Lord wrote: > > > > > > .. hold off on 2.6.16 because of this or not? > > > > > > > It certainly is dangerous. I guess we should turn off FUA for the > > time being. Barrier auto-fallback was once implemented but it > > didn't seem like a good idea as it was too complex and hides low > > level bug from higher level. The concensus seems to be developing > > blacklist of drives which lie about FUA support (currently only one > > drive). Official kernel doesn't seem to be the correct place to grow > > the blacklist, Maybe we should do it from -mm? > > For 2.6.16, the only sane solution for now is to just turn it off. > > Somebody want to send me a patch that does that, along with an ack from > Mark (and whoever else sees this) that it fixes his/their problems? That's the best solution right now. I guess there's no way around a blacklist for FUA support and we need time to grow that :-( And proper fallback to non-FUA writes with disabling FUA based barriers as well. Mark, what drive model+firmware are you using? -- Jens Axboe - : 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
