From: Rusty Russell <rusty@xxxxxxxxxxxxxxx> Date: Fri, 21 Dec 2007 10:13:38 +1100 > But, as demonstrated, there are real benefits of having an explicit header: > > 1) It removes the chain-end/explicit count ambiguity (see > http://lkml.org/lkml/2007/10/25/209 & thread) > 2) It allows others to manipulate sg chains, which couldn't be done before > (eg. the ATA code which wants to append a padding element). > 3) I can now hand you an sg ring for you to fill: sg chains can't do that. > > In short, sg_ring is generally useful primitive. sg chains are a clever hack > for scsi_lib to create, and everyone else to read. I do not refute any of this :-) - 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
