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Date:   Thu, 7 May 2020 07:14:36 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     Neal Cardwell <ncardwell@...gle.com>
Cc:     zhang kai <zhangkaiheb@....com>, Yuchung Cheng <ycheng@...gle.com>,
        David Miller <davem@...emloft.net>,
        Alexey Kuznetsov <kuznet@....inr.ac.ru>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH] tcp: tcp_mark_head_lost is only valid for sack-tcp

On Thu, May 7, 2020 at 6:58 AM Neal Cardwell <ncardwell@...gle.com> wrote:
>
> On Wed, May 6, 2020 at 11:09 PM zhang kai <zhangkaiheb@....com> wrote:
> >
> > so tcp_is_sack/reno checks are removed from tcp_mark_head_lost.
> >
> > Signed-off-by: zhang kai <zhangkaiheb@....com>
> > ---
>
> Nice clean-up, thanks.
>
> Acked-by: Neal Cardwell <ncardwell@...gle.com>
>
> As Eric noted in previous threads, this clean-up is now possible after:
>
> 6ac06ecd3a5d1dd1aaea5c2a8f6d6e4c81d5de6a ("tcp: simpler NewReno implementation")
>
> As Yuchung noted, the tcp_mark_head_lost() function is not used today
> when RACK is enabled (which is by
> default).
>
> neal

Yes, I was hoping for a bit more detailed changelog, it always helps
for future reference.

Thank you

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