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authorEric Dumazet <edumazet@google.com>2013-02-03 09:13:05 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-02-14 10:48:35 -0800
commitb80440945d3644f4dcc1d0817e2f07d9c8d1ef8a (patch)
tree1e39618c4a12de06998fada64406e176026b7b7c /fs/jbd/commit.c
parente90bb8480d31f54d1ccc12602e5800f7ff31dcc1 (diff)
tcp: frto should not set snd_cwnd to 0
[ Upstream commit 2e5f421211ff76c17130b4597bc06df4eeead24f ] Commit 9dc274151a548 (tcp: fix ABC in tcp_slow_start()) uncovered a bug in FRTO code : tcp_process_frto() is setting snd_cwnd to 0 if the number of in flight packets is 0. As Neal pointed out, if no packet is in flight we lost our chance to disambiguate whether a loss timeout was spurious. We should assume it was a proper loss. Reported-by: Pasi Kärkkäinen <pasik@iki.fi> Signed-off-by: Neal Cardwell <ncardwell@google.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Cc: Yuchung Cheng <ycheng@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs/jbd/commit.c')
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