From: Eric Dumazet <edumazet@google.com>
Date: Sat, 11 Oct 2014 01:06:35 +0000 (-0700)
Subject: tcp: fix ooo_okay setting vs Small Queues
X-Git-Tag: fixes-against-v3.18-rc2~61^2~53
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b2532eb9abd88384aa586169b54a3e53574f29f8;p=pandora-kernel.git

tcp: fix ooo_okay setting vs Small Queues

TCP Small Queues (tcp_tsq_handler()) can hold one reference on
sk->sk_wmem_alloc, preventing skb->ooo_okay being set.

We should relax test done to set skb->ooo_okay to take care
of this extra reference.

Minimal truesize of skb containing one byte of payload is
SKB_TRUESIZE(1)

Without this fix, we have more chance locking flows into the wrong
transmit queue.

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

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