[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [RFC] [PATCH] cache pollution aware __copy_from_user_ll()
- From: Arjan van de Ven <arjan@xxxxxxxxxxxxx>
- Date: Mon, 15 Aug 2005 17:09:12 +0200
- References: <20050815121555.29159.qmail@science.horizon.com.suse.lists.linux.kernel> <1124108702.3228.33.camel@laptopd505.fenrus.org.suse.lists.linux.kernel> <p73u0hr1bwc.fsf@verdi.suse.de>
On Mon, 2005-08-15 at 17:02 +0200, Andi Kleen wrote:
> 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_*
but do those use s/g ? and hw csum?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Follow-Ups:
References: