From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <483BBD8C.3040803@cn.fujitsu.com> Date: Tue, 27 May 2008 15:51:40 +0800 From: Li Zefan MIME-Version: 1.0 Subject: Re: [RFC 2/4] memcg: high-low watermark References: <20080527140116.fb04b06b.kamezawa.hiroyu@jp.fujitsu.com> <20080527140703.97b69ed3.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20080527140703.97b69ed3.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: KAMEZAWA Hiroyuki Cc: "linux-mm@kvack.org" , "balbir@linux.vnet.ibm.com" , "yamamoto@valinux.co.jp" , "xemul@openvz.org" , "containers@lists.osdl.org" List-ID: KAMEZAWA Hiroyuki wrote: > Add high/low watermarks to res_counter. > *This patch itself has no behavior changes to memory resource controller. > > Changelog: very old one -> this one (v1) > - watarmark_state is removed and all state check is done under lock. > - changed res_counter_charge() interface. The only user is memory > resource controller. Anyway, returning -ENOMEM here is a bit starnge. > - Added watermark enable/disable flag for someone don't want watermarks. > - Restarted against 2.6.25-mm1. > - some subsystem which doesn't want high-low watermark can work withou it. > > Signed-off-by: KAMEZAWA Hiroyuki > From: YAMAMOTO Takashi > > --- > include/linux/res_counter.h | 41 ++++++++++++++++++++++++--- > kernel/res_counter.c | 66 ++++++++++++++++++++++++++++++++++++++++---- > mm/memcontrol.c | 2 - > 3 files changed, 99 insertions(+), 10 deletions(-) > > Index: mm-2.6.26-rc2-mm1/include/linux/res_counter.h > =================================================================== > --- mm-2.6.26-rc2-mm1.orig/include/linux/res_counter.h > +++ mm-2.6.26-rc2-mm1/include/linux/res_counter.h > @@ -16,6 +16,16 @@ > #include > > /* > + * status of resource coutner's usage. > + */ > +enum res_state { > + RES_BELOW_LOW, /* usage < lwmark */ It seems it's 'usage <= lwmark' > + RES_BELOW_HIGH, /* lwmark < usage < hwmark */ and 'lwmark < usage <= hwmark' > + RES_BELOW_LIMIT, /* hwmark < usage < limit. */ and 'hwmark < usage <= limit' -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org