On 2016年12月23日 23:54, John Fastabend wrote:

On 16-12-23 06:37 AM, Jason Wang wrote:

quoted

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 <redacted>
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 <redacted>

Yes, I have. Just increase the MTU above 1500 for both virtio and tap 
and produce some traffic with size which will lead underestimated of rxbuf.

Thanks
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