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Message-ID: <CANn89i+2idhm3wpGO79RHdCYMfYuKURvBaWmoXmYxBwj5z59yg@mail.gmail.com>
Date:   Fri, 11 Feb 2022 09:24:30 -0800
From:   Eric Dumazet <edumazet@...gle.com>
To:     Ricardo Ribalda <ribalda@...omium.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>,
        David Ahern <dsahern@...nel.org>,
        netdev <netdev@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: Fix build when CONFIG_INET is not enabled

On Fri, Feb 11, 2022 at 8:40 AM Ricardo Ribalda <ribalda@...omium.org> wrote:
>
> If the kernel is configured with CONFIG_NET, but without CONFIG_INET we
> get the following error when building:
>
> sock.c:(.text+0x4c17): undefined reference to `__sk_defer_free_flush'
>
> Lets move __sk_defer_free_flush to sock.c
>

deja vu ?

commit 48cec899e357cfb92d022a9c0df6bbe72a7f6951
Author: Gal Pressman <gal@...dia.com>
Date:   Thu Jan 20 14:34:40 2022 +0200

    tcp: Add a stub for sk_defer_free_flush()

    When compiling the kernel with CONFIG_INET disabled, the
    sk_defer_free_flush() should be defined as a nop.

    This resolves the following compilation error:
      ld: net/core/sock.o: in function `sk_defer_free_flush':
      ./include/net/tcp.h:1378: undefined reference to `__sk_defer_free_flush'

    Fixes: 79074a72d335 ("net: Flush deferred skb free on socket destroy")
    Reported-by: kernel test robot <lkp@...el.com>
    Reviewed-by: Tariq Toukan <tariqt@...dia.com>
    Signed-off-by: Gal Pressman <gal@...dia.com>
    Reviewed-by: Eric Dumazet <edumazet@...gle.com>
    Link: https://lore.kernel.org/r/20220120123440.9088-1-gal@nvidia.com
    Signed-off-by: Jakub Kicinski <kuba@...nel.org>

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