linux-kernel - Re: [PATCH v2] Make frontswap+cleancache and its friend be modularized.

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Date:	Mon, 4 Feb 2013 19:38:59 -0500
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Ric Mason <ric.masonn@...il.com>
Cc:	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Konrad Rzeszutek Wilk <konrad@...nel.org>,
	dan.magenheimer@...cle.com, gregkh@...uxfoundation.org,
	akpm@...ux-foundation.org, ngupta@...are.org,
	rcj@...ux.vnet.ibm.com, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Subject: Re: [PATCH v2] Make frontswap+cleancache and its friend be
 modularized.

On Mon, Feb 04, 2013 at 06:21:12PM -0600, Ric Mason wrote:
> On Mon, 2013-02-04 at 09:14 -0600, Seth Jennings wrote:
> > On 02/03/2013 02:52 AM, Ric Mason wrote:
> > > Hi Konrad,
> > > On Fri, 2013-02-01 at 15:22 -0500, Konrad Rzeszutek Wilk wrote:
> > > 
> > > I have already enable frontswap,cleancache,zcache,
> > >  FRONTSWAP [=y]  
> > >  CLEANCACHE [=y]
> > >  ZCACHE [=y]
> > > But all of knode under /sys/kernel/debug/frontswap and cleancache still
> > > zero, my swap device is enable, where I miss?
> > 
> > Did you pass "zcache" in the kernel boot parameters?
> 
> Thanks Seth, I think it should be add to kernel-parameters.txt.

Actually I think you spotted a bug. It made sense when the zcache was
built-in the kernel. But as a module - it should be enabled when the
system admin loads the module.
> 
> > 
> > Seth
> > 
> 
> 
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