Re: OOPS: 2.5.1-pre8 - cdrecord + ide_scsi

From: Carl Ritson (
Date: Wed Dec 12 2001 - 03:02:05 EST

On Tue, 11 Dec 2001, Jens Axboe wrote:

> On Sun, Dec 09 2001, Jens Axboe wrote:
> > > Ok works with DMA off, so I expect that this new error is due to my resent
> > > memory upgrade (36 Hours ago) and the switch to using HIGHMEM(4GB)..
> > > So am I to believe that DMA is a problem with HIGHMEM(4GB) enabled ?
> >
> > No it's probably still an ide-scsi bug, I'm not suspecting your
> > hardware. The reason I ask is because until -pre8 (since bio merge in
> > -pre2), ide-scsi never used DMA even though it was set for the drive.
> Ok finally had a chance to look some more at this -- it was a bit more
> hairy than I had hoped. Please try this ide-scsi one liner, it should
> cure it. (the bug fix is the bio->bi_vcnt = 1 change only)
This Patch appears to work fine. Tested with DMA on and DMA off, no
Errors.. :)

Carl Ritson

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