Messages in this thread | | | Date | Fri, 2 Aug 2002 13:53:21 +0200 | From | Jens Axboe <> | Subject | Re: A new ide warning message |
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On Fri, Aug 02 2002, Marcin Dalecki wrote: > U?ytkownik Stephen Lord napisa?: > >In 2.5.30 I started getting these warning messages out ide during > >the mount of an XFS filesystem: > > > >ide-dma: received 1 phys segments, build 2 > > > >Can anyone translate that into English please. > > It can be found in pcidma.c. > It is repoting that we have one physical segment needed by > the request in question but the sctter gather list allocation > needed to break it up for mapping in two.
You don't seem to realise that this is a BUG (somewhere, could even be in the generic mapping functions)! blk_rq_map_sg() must never map a request to more entries that rq->nr_segments, that's just very wrong.
That's why I'm suspecting the recent pcidma changes. Just a feeling, I have not looked at them.
-- Jens Axboe
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