On Thu, Aug 05, 2010 at 05:11:56PM +0400, Vladislav Bolkhovitin wrote: > Chris Mason, on 08/02/2010 09:39 PM wrote: > >I regret putting the ordering into the original barrier code...it > >definitely did help reiserfs back in the day but it stinks of magic and > >voodoo. > > But if the ordering isn't in the common (block) code, how to implement > the "hardware offload" for ordering, i.e. ORDERED commands, in an > acceptable way? Right now we have no working implementation of actually using ordered tags for a storage device in Linux. There's very little need for common code in that implementation - basically we just need flag in the bio / request to make this one an ordered tag in addition to the existing reordering preventing in the block queue. -- 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
