From: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Date: Sat, 28 Feb 2009 04:44:27 +0000 (+0000)
Subject: tcp: don't backtrack to sacked skbs
X-Git-Tag: v2.6.30-rc1~662^2~446
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac11ba753f3aa839292c1a3b6c971c637ad2e839;p=pandora-kernel.git

tcp: don't backtrack to sacked skbs

Backtracking to sacked skbs is a horrible performance killer
since the hint cannot be advanced successfully past them...
...And it's totally unnecessary too.

In theory this is 2.6.27..28 regression but I doubt anybody
can make .28 to have worse performance because of other TCP
improvements.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
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