On 02/03/2010 12:46 PM, Alan Cox wrote:
And indeed there was a patch I proposed in 2008 for this bounce buffer latency: See the archive Date: Fri, 29 Feb 2008 13:51:06 +0000 From: Alan Cox<alan@xxxxxxxxxxxxxxxxxxx> To: linux-ide@xxxxxxxxxxxxxxx, jeff@xxxxxxxxxx Subject: [RFC PATCH] libata: PIO via bounce buffer although it doesn't deal with the dcache coherency issue and seems to need a little tweaking to apply due to other changes
Yeah, I definitely liked the idea. I wonder if we could do the allocation during port_start rather than at the time of bounce? One maximally-sized buffer per device should not be too punishing on the system, IMO.
In any case, it is a nice approach to pursue. Jeff -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
