Messages in this thread | | | From | Jason Wang <> | Date | Thu, 10 Aug 2023 11:37:35 +0800 | Subject | Re: [PATCH v4] tun: avoid high-order page allocation for packet header |
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On Thu, Aug 10, 2023 at 12:48 AM Tahsin Erdogan <trdgn@amazon.com> wrote: > > When gso.hdr_len is zero and a packet is transmitted via write() or > writev(), all payload is treated as header which requires a contiguous > memory allocation. This allocation request is harder to satisfy, and may > even fail if there is enough fragmentation. > > Note that sendmsg() code path limits the linear copy length, so this change > makes write()/writev() and sendmsg() paths more consistent. > > Signed-off-by: Tahsin Erdogan <trdgn@amazon.com> > --- > v4: updated commit message address comments from Willem > v3: rebase to latest net-next > v2: replace linear == 0 with !linear > v1: https://lore.kernel.org/all/20230726030936.1587269-1-trdgn@amazon.com/
Acked-by: Jason Wang <jasowang@redhat.com>
Thanks
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