On Mon, Jun 05, 2006 at 10:24:44AM -0500, James Bottomley wrote: > On Mon, 2006-06-05 at 15:44 +0100, Russell King wrote: > > Hence I find your comment "There are two cases where devices kmap a > > user page into kernel space and then proceed to read from or write to > > it" to be misleading - at the exact point in time that the device > > driver is manipulating the data in that page, it is not a user page. > > zero copy doesn't quite follow that ownership model. What has zero copy (your reply) got to do with faulting pages into userspace (my message). I'm sorry, I don't understand why you've brought this up. -- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - : 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
