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Date: Mon, 18 Feb 2019 13:22:42 +0100 From: Greg KH <gregkh@...uxfoundation.org> To: Alakesh Haloi <alakeshh@...zon.com> Cc: stable@...r.kernel.org, "David S. Miller" <davem@...emloft.net>, Alexey Kuznetsov <kuznet@....inr.ac.ru>, Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>, Eric Dumazet <edumazet@...gle.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] tcp: Namespace-ify sysctl_tcp_rmem and sysctl_tcp_wmem On Thu, Feb 14, 2019 at 01:12:08AM +0000, Alakesh Haloi wrote: > [ Upstream commit 356d1833b638bd465672aefeb71def3ab93fc17d ] > > Note that when a new netns is created, it inherits its > sysctl_tcp_rmem and sysctl_tcp_wmem from initial netns. > > This change is needed so that we can refine TCP rcvbuf autotuning, > to take RTT into consideration. > > Signed-off-by: Eric Dumazet <edumazet@...gle.com> > Cc: Wei Wang <weiwan@...gle.com> > Signed-off-by: David S. Miller <davem@...emloft.net> > [alakeshh: backport to v4.14: The patch does not apply to v4.14 > directly and hence needed manual backport. Function signature for > the function tcp_select_initial_window had to be changed to be able > to pass pointer to struct sock.] > Signed-off-by: Alakesh Haloi <alakeshh@...zon.com> Like Sasha said, why is this needed in 4.14.y? It looks like a new feature. What is keeping you from just using 4.19.y if you want this feature? thanks, greg k-h
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