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Re: [PATCH net 3/9] virtio-net: fix page miscount during XDP linearizing

From John Fastabend <john.fastabend@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH net 3/9] virtio-net: fix page miscount during XDP linearizing
Date 2016-12-23 17:00 +0100
Message-ID <sRAqe-kn-37@gated-at.bofh.it> (permalink)
References <sRzaN-833-3@gated-at.bofh.it> <sRzaO-833-19@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On 16-12-23 06:37 AM, Jason Wang wrote:
> We don't put page during linearizing, the would cause leaking when
> xmit through XDP_TX or the packet exceeds PAGE_SIZE. Fix them by
> put page accordingly. Also decrease the number of buffers during
> linearizing to make sure caller can free buffers correctly when packet
> exceeds PAGE_SIZE. With this patch, we won't get OOM after linearize
> huge number of packets.
> 
> Cc: John Fastabend <john.r.fastabend@intel.com>
> Signed-off-by: Jason Wang <jasowang@redhat.com>
> ---

Thanks! looks good. By the way do you happen to have any actual
configuration where this path is hit? I obviously didn't test this
very long other than a quick test with my hacked vhost driver.

Acked-by: John Fastabend <john.r.fastabend@intel.com>

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Thread

[PATCH net 3/9] virtio-net: fix page miscount during XDP linearizing Jason Wang <jasowang@redhat.com> - 2016-12-23 15:40 +0100
  Re: [PATCH net 3/9] virtio-net: fix page miscount during XDP  linearizing John Fastabend <john.fastabend@gmail.com> - 2016-12-23 17:00 +0100
    Re: [PATCH net 3/9] virtio-net: fix page miscount during XDP  linearizing Jason Wang <jasowang@redhat.com> - 2016-12-26 03:40 +0100

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