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Date:   Sun, 22 Nov 2020 12:23:50 +0100
From:   Arnd Bergmann <>
To:     Jakub Kicinski <>
Cc:     David Miller <>,
        Networking <>,
        Christoph Hellwig <>, Arnd Bergmann <>
Subject: Re: [PATCH net-next v2] compat: always include linux/compat.h from net/compat.h

On Sat, Nov 21, 2020 at 10:49 PM Jakub Kicinski <> wrote:
> We're about to do reshuffling in networking headers and
> eliminate some implicit includes. This results in:
> In file included from ../net/ipv4/netfilter/arp_tables.c:26:
> include/net/compat.h:60:40: error: unknown type name ‘compat_uptr_t’; did you mean ‘compat_ptr_ioctl’?
>     struct sockaddr __user **save_addr, compat_uptr_t *ptr,
>                                         ^~~~~~~~~~~~~
>                                         compat_ptr_ioctl
> include/net/compat.h:61:4: error: unknown type name ‘compat_size_t’; did you mean ‘compat_sigset_t’?
>     compat_size_t *len);
>     ^~~~~~~~~~~~~
>     compat_sigset_t
> Currently net/compat.h depends on linux/compat.h being included
> first. After the upcoming changes this would break the 32bit build.
> Signed-off-by: Jakub Kicinski <>

Reviewed-by: Arnd Bergmann <>

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