linux-kernel - Re: [PATCH] zsmalloc: drop unused member 'mapping

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Message-ID: <20160217153759.GA30705@bbox>
Date:	Thu, 18 Feb 2016 00:37:59 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	YiPing Xu <xuyiping@...wei.com>
CC:	ngupta@...are.org, sergey.senozhatsky.work@...il.com,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	suzhuangluan@...ilicon.com, puck.chen@...ilicon.com,
	dan.zhao@...ilicon.com
Subject: Re: [PATCH] zsmalloc: drop unused member 'mapping_area->huge'

On Wed, Feb 17, 2016 at 09:56:39AM +0800, YiPing Xu wrote:
> When unmapping a huge class page in zs_unmap_object, the page will
> be unmapped by kmap_atomic. the "!area->huge" branch in
> __zs_unmap_object is alway true, and no code set "area->huge" now,
> so we can drop it.
> 
> Signed-off-by: YiPing Xu <xuyiping@...wei.com>
Acked-by: Minchan Kim <minchan@...nel.org>

Thanks.