linux-kernel - Re: [RFC][PATCH 6/7][memcg] generic file status update

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Message-Id: <20100728161422.753029c1.kamezawa.hiroyu@jp.fujitsu.com>
Date:	Wed, 28 Jul 2010 16:14:22 +0900
From:	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
To:	Greg Thelen <gthelen@...gle.com>
Cc:	"linux-mm\@kvack.org" <linux-mm@...ck.org>,
	"nishimura\@mxp.nes.nec.co.jp" <nishimura@....nes.nec.co.jp>,
	"balbir\@linux.vnet.ibm.com" <balbir@...ux.vnet.ibm.com>,
	m-ikeda@...jp.nec.com,
	"akpm\@linux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 6/7][memcg] generic file status update

On Wed, 28 Jul 2010 00:12:13 -0700
Greg Thelen <gthelen@...gle.com> wrote:

> KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> writes:
> 
> > This patch itself is not important. I just feel we need this kind of
> > clean up in future.
> >
> > ==
> > From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> >
> > Preparing for adding new status arounf file caches.(dirty, writeback,etc..)
> > Using a unified macro and more generic names.
> > All counters will have the same rule for updating.
> >
> > Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> > ---
> >  include/linux/memcontrol.h  |   10 +++++++---
> >  include/linux/page_cgroup.h |   21 +++++++++++++++------
> >  mm/memcontrol.c             |   27 +++++++++++++++++----------
> >  mm/rmap.c                   |    4 ++--
> >  4 files changed, 41 insertions(+), 21 deletions(-)
> >
> > Index: mmotm-0719/include/linux/memcontrol.h
> > ===================================================================
> > --- mmotm-0719.orig/include/linux/memcontrol.h
> > +++ mmotm-0719/include/linux/memcontrol.h
> > @@ -121,7 +121,11 @@ static inline bool mem_cgroup_disabled(v
> >  	return false;
> >  }
> >  
> > -void mem_cgroup_update_file_mapped(struct page *page, int val);
> > +enum {
> > +	__MEMCG_FILE_MAPPED,
> > +	NR_MEMCG_FILE_STAT
> > +};
> 
> These two stat values need to be defined outside of "#if
> CONFIG_CGROUP_MEM_RES_CTLR" (above) to allow for rmap.c to allow for the
> following (from rmap.c) when memcg is not compiled in:
> 	mem_cgroup_update_file_stat(page, __MEMCG_FILE_MAPPED, 1);
> 

ok. or I'll not remove mem_cgroup_update_file_mapped().



> > +void mem_cgroup_update_file_stat(struct page *page, int stat, int val);
> >  unsigned long mem_cgroup_soft_limit_reclaim(struct zone *zone, int order,
> >  						gfp_t gfp_mask, int nid,
> >  						int zid);
> > @@ -292,8 +296,8 @@ mem_cgroup_print_oom_info(struct mem_cgr
> >  {
> >  }
> >  
> > -static inline void mem_cgroup_update_file_mapped(struct page *page,
> > -							int val)
> > +static inline void
> > +mem_cgroup_update_file_stat(struct page *page, int stat, int val);
> 
> Trailing ';' needs to be removed.
> 
ok, will do.

Bye.
-Kame

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