Re: Scsi problems in 2.5.1-pre9

From: David S. Miller (
Date: Tue Dec 11 2001 - 17:04:09 EST

   From: Anton Blanchard <>
   Date: Wed, 12 Dec 2001 08:28:02 +1100
   This seems to be happening because we now allow sg merging through
   the BIOVEC_MERGEABLE macro. On ppc64 (and sparc64) we can coalesce two
   sg entries if the first one ends on a page boundary and the next one
   starts on a page boundary because we have an IO MMU. (I know that you
   know this, Im just explaining it for those who dont :)

In that case you perhaps should be defining DMA_CHUNK_SIZE in
asm/dma.h :-)
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