linux-kernel - Re: [PATCH 4/4] staging: zsmalloc: make CLASS_DELTA relative to PAGE

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Message-ID: <20130128034404.GD3321@blaptop>
Date:	Mon, 28 Jan 2013 12:44:04 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Nitin Gupta <ngupta@...are.org>,
	Robert Jennings <rcj@...ux.vnet.ibm.com>, linux-mm@...ck.org,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] staging: zsmalloc: make CLASS_DELTA relative to
 PAGE_SIZE

On Fri, Jan 25, 2013 at 11:46:18AM -0600, Seth Jennings wrote:
> Right now ZS_SIZE_CLASS_DELTA is hardcoded to be 16.  This
> creates 254 classes for systems with 4k pages. However, on
> PPC64 with 64k pages, it creates 4095 classes which is far
> too many.
> 
> This patch makes ZS_SIZE_CLASS_DELTA relative to PAGE_SIZE
> so that regardless of the page size, there will be the same
> number of classes.
> 
> Acked-by: Nitin Gupta <ngupta@...are.org>
> Signed-off-by: Seth Jennings <sjenning@...ux.vnet.ibm.com>
Acked-by: Minchan Kim <minchan@...nel.org>

-- 
Kind regards,
Minchan Kim
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