linux-kernel - Re: [PATCH 2/2 v2] zram: clean up handle

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Date:	Wed, 23 May 2012 15:09:38 -0500
From:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
To:	Minchan Kim <minchan@...nel.org>
CC:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Nitin Gupta <ngupta@...are.org>
Subject: Re: [PATCH 2/2 v2] zram: clean up handle

On 05/22/2012 08:43 PM, Minchan Kim wrote:

> zram's handle variable can store handle of zsmalloc in case of
> compressing efficiently. Otherwise, it stores point of page descriptor.
> This patch clean up the mess by union struct.
> 
> changelog
>   * from v1
> 	- none(new add in v2)
> 
> Cc: Nitin Gupta <ngupta@...are.org>
> Cc: Seth Jennings <sjenning@...ux.vnet.ibm.com>
> Signed-off-by: Minchan Kim <minchan@...nel.org>


Not sure if the BUILD_BUG is completely needed since it's pretty well
assumed that sizeof(unsigned long) == sizeof(void *) but it does provide
some safety is someone tries to change the type of handle.

Acked-by: <sjenning@...ux.vnet.ibm.com>

Thanks,
Seth

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