linux-kernel - Re: [PATCH 1/3] zsmalloc: promote to lib/

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Message-ID: <5062CE1E.3010203@cn.fujitsu.com>
Date:	Wed, 26 Sep 2012 17:42:54 +0800
From:	Wanlong Gao <gaowanlong@...fujitsu.com>
To:	Minchan Kim <minchan@...nel.org>
CC:	Jens Axboe <axboe@...nel.dk>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Nitin Gupta <ngupta@...are.org>,
	Konrad Rzeszutek Wilk <konrad@...nok.org>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] zsmalloc: promote to lib/

On 09/26/2012 04:50 PM, Minchan Kim wrote:
> This patch promotes the slab-based zsmalloc memory allocator
> from the staging tree to lib/
> 
> zcache/zram depends on this allocator for storing compressed RAM pages
> in an efficient way under system wide memory pressure where
> high-order (greater than 0) page allocation are very likely to
> fail.
> 
> For more information on zsmalloc and its internals, read the
> documentation at the top of the zsmalloc.c file.
> 
> Signed-off-by: Minchan Kim <minchan@...nel.org>
> ---
>  drivers/staging/Kconfig                  |    2 -
>  drivers/staging/Makefile                 |    1 -
>  drivers/staging/zcache/zcache-main.c     |    4 +-
>  drivers/staging/zram/zram_drv.h          |    3 +-
>  drivers/staging/zsmalloc/Kconfig         |   10 -
>  drivers/staging/zsmalloc/Makefile        |    3 -
>  drivers/staging/zsmalloc/zsmalloc-main.c | 1064 ------------------------------
>  drivers/staging/zsmalloc/zsmalloc.h      |   43 --
>  include/linux/zsmalloc.h                 |   43 ++
>  lib/Kconfig                              |    2 +
>  lib/Makefile                             |    1 +
>  lib/zsmalloc/Kconfig                     |   18 +
>  lib/zsmalloc/Makefile                    |    1 +
>  lib/zsmalloc/zsmalloc.c                  | 1064 ++++++++++++++++++++++++++++++
>  14 files changed, 1132 insertions(+), 1127 deletions(-)
>  delete mode 100644 drivers/staging/zsmalloc/Kconfig
>  delete mode 100644 drivers/staging/zsmalloc/Makefile
>  delete mode 100644 drivers/staging/zsmalloc/zsmalloc-main.c
>  delete mode 100644 drivers/staging/zsmalloc/zsmalloc.h
>  create mode 100644 include/linux/zsmalloc.h
>  create mode 100644 lib/zsmalloc/Kconfig
>  create mode 100644 lib/zsmalloc/Makefile
>  create mode 100644 lib/zsmalloc/zsmalloc.c

Since there's just one file here, why not just move to lib flatly without creating a new directory?

Thanks,
Wanlong Gao

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