linux-kernel - Re: [PATCH] remove <asm/scatterlist.h>

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Date:	Tue, 5 May 2015 23:29:51 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Christoph Hellwig <hch@....de>
Cc:	Jens Axboe <axboe@...nel.dk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] remove <asm/scatterlist.h>

On Tue, May 5, 2015 at 10:41 PM, Christoph Hellwig <hch@....de> wrote:
> On Tue, May 05, 2015 at 10:34:21PM +0200, Geert Uytterhoeven wrote:
>> If you remove include/asm-generic/scatterlist.h, you have to update the
>> various Kbuild files referring to it:
>
> Oh, I missed that and will fix it.  But where does the missing removal
> actually show up?  During a normal build on a few architectures nothing
> seemed to care.

There are indeed no errors or warnings from Kbuild if you remove a
file from include/asm-generic. Only if you try to #include it, it will fail.

Ah, it just creates a file that includes the generic version, whether it
exists or not:

$ cat arch/arm/include/generated/asm/scatterlist.h
#include <asm-generic/scatterlist.h>
$

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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