On Mon, 2006-11-27 at 13:13 -0600, Mike Christie wrote: > I thought they were continguous. I think James has said before that > they > can be disjoint. When we converted sg it did not look like sg or st > supported disjoint. The main non dio path used a buffer from > get_free_pages so I thought that would always be contiguous. The dio > path then always set the first sg offset, but the rest it set to zero. For ordinary mappings, they're contiguous ... there's an edge case where you go through the deprecated buffer cache you can end up with multiple sg elements that are 512 bytes in length, but this probably isn't worth worrying about any more. James - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
