Messages in this thread | | | Date | Wed, 17 Oct 2007 21:14:35 -0400 | From | Jeff Garzik <> | Subject | Re: [bug] ata subsystem related crash with latest -git |
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On a related hardware note:
FWIW, most ATA controllers have scatter/gather tables that terminate themselves by a bit in the final s/g entry. The 90% case needs to know the last scatterlist entry, at the end of the s/g walk.
So however this all gets worked out, please make sure not to unduly punish libata controllers with an expensive sg_last() inside a loop, or something like that. :)
Jeff
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