Re: OOPS: 2.5.1-pre8 - cdrecord + ide_scsi

From: Jens Axboe (
Date: Tue Dec 11 2001 - 09:28:31 EST

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)

Jens Axboe

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