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Date:   Mon, 30 Jul 2018 15:38:54 +0000
From:   Christopher Lameter <cl@linux.com>
To:     Vlastimil Babka <vbabka@suse.cz>
cc:     Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, linux-api@vger.kernel.org,
        Roman Gushchin <guro@fb.com>, Michal Hocko <mhocko@kernel.org>,
        Johannes Weiner <hannes@cmpxchg.org>,
        David Rientjes <rientjes@google.com>,
        Joonsoo Kim <iamjoonsoo.kim@lge.com>,
        Mel Gorman <mgorman@techsingularity.net>,
        Matthew Wilcox <willy@infradead.org>
Subject: Re: [PATCH v3 1/7] mm, slab: combine kmalloc_caches and
 kmalloc_dma_caches
In-Reply-To: <20180718133620.6205-2-vbabka@suse.cz>
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References: <20180718133620.6205-1-vbabka@suse.cz> <20180718133620.6205-2-vbabka@suse.cz>
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On Wed, 18 Jul 2018, Vlastimil Babka wrote:

> --- a/include/linux/slab.h
> +++ b/include/linux/slab.h
> @@ -295,12 +295,28 @@ static inline void __check_heap_object(const void *ptr, unsigned long n,
>  #define SLAB_OBJ_MIN_SIZE      (KMALLOC_MIN_SIZE < 16 ? \
>                                 (KMALLOC_MIN_SIZE) : 16)
>
> +#define KMALLOC_NORMAL	0
> +#ifdef CONFIG_ZONE_DMA
> +#define KMALLOC_DMA	1
> +#define KMALLOC_TYPES	2
> +#else
> +#define KMALLOC_TYPES	1
> +#endif

An emum would be better here I think.

But the patch is ok

Acked-by: Christoph Lameter <cl@linux.com>