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Message-Id: <1319074449-10892-1-git-send-email-gaofeng@cn.fujitsu.com> Date: Thu, 20 Oct 2011 09:34:09 +0800 From: Gao feng <gaofeng@...fujitsu.com> To: davem@...emloft.net, eric.dumazet@...il.com Cc: netdev@...r.kernel.org, Gao feng <gaofeng@...fujitsu.com> Subject: [PATCH] ipv4: avoid useless call of the function check_peer_pmtu In func ipv4_dst_check,check_peer_pmtu should be called only when peer is updated. So,if the peer is not updated in ip_rt_frag_needed,we can not inc __rt_peer_genid. Signed-off-by: Gao feng <gaofeng@...fujitsu.com> --- net/ipv4/route.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/net/ipv4/route.c b/net/ipv4/route.c index 075212e..04a14db 100644 --- a/net/ipv4/route.c +++ b/net/ipv4/route.c @@ -1568,11 +1568,10 @@ unsigned short ip_rt_frag_needed(struct net *net, const struct iphdr *iph, est_mtu = mtu; peer->pmtu_learned = mtu; peer->pmtu_expires = pmtu_expires; + atomic_inc(&__rt_peer_genid); } inet_putpeer(peer); - - atomic_inc(&__rt_peer_genid); } return est_mtu ? : new_mtu; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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