linux-kernel - Re: [PATCH] mm: slab.h: wrap the whole file with guarding macro

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Message-id: <53A29158.2050809@samsung.com>
Date:	Thu, 19 Jun 2014 11:29:28 +0400
From:	Andrey Ryabinin <a.ryabinin@...sung.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Vladimir Davydov <vdavydov@...allels.com>,
	Pekka Enberg <penberg@...nel.org>,
	Christoph Lameter <cl@...ux.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: slab.h: wrap the whole file with guarding macro

On 06/19/14 00:22, David Rientjes wrote:
> On Wed, 18 Jun 2014, Andrey Ryabinin wrote:
> 
>> Guarding section:
>> 	#ifndef MM_SLAB_H
>> 	#define MM_SLAB_H
>> 	...
>> 	#endif
>> currently doesn't cover the whole mm/slab.h. It seems like it was
>> done unintentionally.
>>
>> Wrap the whole file by moving closing #endif to the end of it.
>>
>> Signed-off-by: Andrey Ryabinin <a.ryabinin@...sung.com>
> 
> Acked-by: David Rientjes <rientjes@...gle.com>
> 
> Looks like
> 
> ca34956b804b ("slab: Common definition for kmem_cache_node")
> e25839f67948 ("mm/slab: Sharing s_next and s_stop between slab and slub
> 276a2439ce79 ("mm/slab: Give s_next and s_stop slab-specific names")
> 
> added onto the header without the guard and it has been this way since 
> Jan 10 2013.  Andrey, how did you notice that this was an issue?  Simply 
> by visual inspection?
> 

I had to do some modifications in this file for some reasons, and for me it was hard to not
notice lack of endif in the end.
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