On Thu, 1 Dec 2005, James Bottomley wrote: > On Thu, 2005-12-01 at 11:38 -0800, Linus Torvalds wrote: > > Ryan, can you test 2.6.15-rc4 and report what it does? > > > > The "Bad page state" messages may (should) remain, but the crashes should > > be gone and the machine should hopefully continue functioning fine. And, > > perhaps more importantly, you should hopefully have a _new_ message about > > incomplete pfn mappings that should help pinpoint which driver causes > > this.. > > On a side note, I have Kai's patch in the scsi-rc-fixes tree which I'm > getting ready to push. Can we get a consensus on whether it should be > removed before I merge upwards? > I think it should be removed because it is based partly on a wrong assumption: asynchronous writes are _not_ done together with direct i/o. (I have also experimentally verified that this does not happen.) The patch includes the patch I sent sent to linux-scsi on Nov 21. Nobody has commented it and I don't know if the user pages have to be explicitly marked dirty after the HBA has read data there. If they have to, then this earlier patch is valid. If not, I will send a patch for 2.6.16 to remove the latent code. -- Kai - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
