linux-kernel - Re: [PATCH 1/3] mm: sl[aou]b: introduce kmem_cache_zalloc

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Date:	Thu, 20 Nov 2014 11:47:21 +0300
From:	Andrey Ryabinin <a.ryabinin@...sung.com>
To:	David Rientjes <rientjes@...gle.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
	Christoph Lameter <cl@...ux.com>,
	Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
	Pekka Enberg <penberg@...nel.org>
Subject: Re: [PATCH 1/3] mm: sl[aou]b: introduce kmem_cache_zalloc_node()

On 11/20/2014 02:46 AM, David Rientjes wrote:
> On Mon, 10 Nov 2014, Andrey Ryabinin wrote:
> 
>> kmem_cache_zalloc_node() allocates zeroed memory for a particular
>> cache from a specified memory node. To be used for struct irq_desc.
>>
> 
> Is there a reason to add this for such a specialized purpose to the slab 
> allocator?  I think it can just be handled for struct irq_desc explicitly.
> 

It could be used not only for irq_desc. Grepping sources gave me 7 possible users.

We already have zeroing variants of kmalloc/kmalloc_node/kmem_cache_alloc,
so why kmem_cache_alloc_node is special?


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