linux-kernel - Re: [PATCH 2/2] mm/slob: Use free_page instead of put

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Message-ID: <5085370F.80204@parallels.com>
Date:	Mon, 22 Oct 2012 16:07:43 +0400
From:	Glauber Costa <glommer@...allels.com>
To:	Ezequiel Garcia <elezegarcia@...il.com>
CC:	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
	Tim Bird <tim.bird@...sony.com>,
	Christoph Lameter <cl@...ux-foundation.org>,
	Pekka Enberg <penberg@...nel.org>,
	Matt Mackall <mpm@...enic.com>
Subject: Re: [PATCH 2/2] mm/slob: Use free_page instead of put_page for page-size
 kmalloc allocations

On 10/22/2012 04:04 PM, Ezequiel Garcia wrote:
> When freeing objects, the slob allocator currently free empty pages
> calling __free_pages(). However, page-size kmallocs are disposed
> using put_page() instead.
> 
> It makes no sense to call put_page() for kernel pages that are provided
> by the object allocator, so we shouldn't be doing this ourselves.
> 
> This is based on:
> commit d9b7f22623b5fa9cc189581dcdfb2ac605933bf4
> Author: Glauber Costa <glommer@...allels.com>
Acked-by: Glauber Costa <glommer@...allels.com>

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