Re: [RFC] [PATCH] cache pollution aware __copy_from_user_ll()

Andi Kleen
2005-08-15T15:02:44Z

Arjan van de Ven <arjan@infradead.org> writes:

> On Mon, 2005-08-15 at 08:15 -0400, linux@horizon.com wrote:
> > Actually, is there any place *other* than write() to the page cache that
> > warrants a non-temporal store? Network sockets with scatter/gather and
> > hardware checksum, maybe?
>
> afaik those use zero copy already, eg straight pagecache copy.

Only if you use sendfile(). And the normal write path uses csum_copy_*

-Andi