Re: How to map high memory for block io

Russell King
2006-01-27T20:16:09Z

On Fri, Jan 27, 2006 at 09:12:16PM +0100, Pierre Ossman wrote:
> Russell King wrote:
> > > I don't see what the problem is. A sg entry is a list of struct page
> > > pointers, an offset, and a size. As such, it can't describe a transfer
> > > which crosses a page because such a structure does not imply that one
> > > struct page follows another struct page.
>
> If the pages do not strictly follow each other then there is a lot of
> broken code in the kernel. drivers/mmc/mmci.c and drivers/block/ub.c
> being two occurences since both assume they can access the entire entry
> through a single mapping.

Why am I getting duplicates of this message? Please don't forcefully
send me duplicates - it's a waste of my bandwidth. Thanks.

--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core