From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 28 Nov 2008 18:02:52 +0900 From: Daisuke Nishimura Subject: [RFC][PATCH -mmotm 0/2] misc patches for memory cgroup hierarchy Message-Id: <20081128180252.b7a73c86.nishimura@mxp.nes.nec.co.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: LKML , linux-mm Cc: Balbir Singh , KAMEZAWA Hiroyuki , Pavel Emelyanov , Li Zefan , Paul Menage List-ID: Hi. I'm writing some patches for memory cgroup hierarchy. I think KAMEZAWA-san's cgroup-id patches are the most important pathes now, but I post these patches as RFC before going further. Patch descriptions: - [1/2] take account of memsw mem_cgroup_hierarchical_reclaim checks only mem->res now. It should also check mem->memsw when do_swap_account. - [2/2] avoid oom In previous implementation, mem_cgroup_try_charge checked the return value of mem_cgroup_try_to_free_pages, and just retried if some pages had been reclaimed. But now, try_charge(and mem_cgroup_hierarchical_reclaim called from it) only checks whether the usage is less than the limit. I see oom easily in some tests which didn't cause oom before. Both patches are for memory-cgroup-hierarchical-reclaim-v4 patch series. My current plan for memory cgroup hierarchy: - If hierarchy is enabled, limit of child should not exceed that of parent. - Change other calls for mem_cgroup_try_to_free_page() to mem_cgroup_hierarchical_reclaim() if possible. Thanks, Daisuke Nishimura. -- 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