On Thu, Jun 18, 2015 at 12:54:44PM +0200, Christian Borntraeger wrote:
> Am 18.06.2015 um 12:20 schrieb Michael S. Tsirkin:
> > Needs more testing. Anyone see anything wrong with this?
> Can you explain the motivation? 
> FWIW, basic networking between two guest over macvtap still
> seems to work on s390 so I dont see any obvious regression.
> 
> Christian

Shorter fragment list often makes processing in the net stack more
efficient.

> > 
> > Signed-off-by: Michael S. Tsirkin <m...@redhat.com>
> > ---
> >  drivers/net/macvtap.c | 2 +-
> >  drivers/net/tun.c     | 2 +-
> >  2 files changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c
> > index 928f3f4..80e87e4 100644
> > --- a/drivers/net/macvtap.c
> > +++ b/drivers/net/macvtap.c
> > @@ -610,7 +610,7 @@ static inline struct sk_buff *macvtap_alloc_skb(struct 
> > sock *sk, size_t prepad,
> >             linear = len;
> > 
> >     skb = sock_alloc_send_pskb(sk, prepad + linear, len - linear, noblock,
> > -                              err, 0);
> > +                              err, 1);
> >     if (!skb)
> >             return NULL;
> > 
> > diff --git a/drivers/net/tun.c b/drivers/net/tun.c
> > index cb376b2d..8f2f1e5 100644
> > --- a/drivers/net/tun.c
> > +++ b/drivers/net/tun.c
> > @@ -1069,7 +1069,7 @@ static struct sk_buff *tun_alloc_skb(struct tun_file 
> > *tfile,
> >             linear = len;
> > 
> >     skb = sock_alloc_send_pskb(sk, prepad + linear, len - linear, noblock,
> > -                              &err, 0);
> > +                              &err, 1);
> >     if (!skb)
> >             return ERR_PTR(err);
> > 
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