On Mon, Aug 15, 2005 at 05:09:12PM +0200, Arjan van de Ven wrote: > On Mon, 2005-08-15 at 17:02 +0200, Andi Kleen wrote: > > Arjan van de Ven <[EMAIL PROTECTED]> writes: > > > > > On Mon, 2005-08-15 at 08:15 -0400, [EMAIL PROTECTED] 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 ?
sendfile yes. sendmsg also when the MTU of the device is larger than a page. > and hw csum? sendmsg normally not. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
