udp: keep the sk_receive_queue held when splicing

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On packet reception, when we are forced to splice the
sk_receive_queue, we can keep the related lock held, so
that we can avoid re-acquiring it, if fwd memory
scheduling is required.

v1 -> v2:
  the rx_queue_lock_held param in udp_rmem_release() is
  now a bool

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Paolo Abeni 2017-05-16 11:20:15 +02:00 • committed by David S. Miller

parent 2276f58ac5

commit 6dfb4367cd

1 changed files with 26 additions and 10 deletions

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net/ipv4/udp.c

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