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

[Andi Kleen]

Arjan van de Ven <arjan@xxxxxxxxxxxxx> writes:

> On Mon, 2005-08-15 at 08:15 -0400, linux@xxxxxxxxxxx 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
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