netdev - Re: [PATCH] Cleanup include/net/tcp.h include-files and coding-style

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Date:	Mon, 10 Jan 2011 00:30:33 +0200
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	Christoph Paasch <christoph.paasch@...ouvain.be>
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Cleanup include/net/tcp.h include-files and
 coding-style

On Sun, Jan 09, 2011 at 09:55:34PM +0100, Christoph Paasch wrote:
> This patch reviews the include-files of net/tcp.h
> Several #include where redundant. Some where not directly needed by
> net/tcp.h
> 
> Files, including net/tcp.h where also including some the *.h-files that
> net/tcp.h is already including. Thus, in these files the inclusion of
> the *.h file is unnecessary.
> 
> Redundant includes in net/tcp.h:
> 
> linux/list.h --- included by linux/textsearch.h which is included by
>                  linux/skbuff.h
> linux/slab.h --- included by linux/crypto.h
> linux/cache.h --- included by linux/skbuff.h
> linux/skbuff.h --- included by net/sock.h
> linux/kref.h --- included by linux/kobject.h, which is  included by
>                  linux/device.h, which is included by
>                  linux/dmaengine.h, which is included by
>                  linux/skbuff.h
> net/inet_connection_sock.h --- included by net/inet_hashtables.h
> net/checksum.h --- included by net/sock.h
> net/request_sock.h --- included by net/inet_connection_sock.h
> net/sock.h --- included by net/request_sock.h
> net/snmp.h --- included by net/ip.h
> net/dst.h --- included by net/sock.h
> linux/seq_file.h --- included by net/neighbour.h, which is included by
>                      net/dst.h
> 
> Include-files not directly needed by net/tcp.h:
> 
> linux/percpu.h
> linux/dmaengine.h

DMA stuff "dereferenced" in tcp_prequeue_init().

> net/tcp_states.h
> net/inet_ecn.h

NAK

Where is the logic?

include/net/tcp.h _does_ use kref, so it needs kref.h
include/net/tcp.h _does_ use list_head, so it needs list.h

and so on.
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