From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> To: "linux-mm@kvack.org" <linux-mm@kvack.org> Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "hannes@cmpxchg.org" <hannes@cmpxchg.org>, "nishimura@mxp.nes.nec.co.jp" <nishimura@mxp.nes.nec.co.jp>, "balbir@linux.vnet.ibm.com" <balbir@linux.vnet.ibm.com> Subject: [BUGFIX][PATCH 0/4] Fixes for memcg with THP Date: Fri, 28 Jan 2011 12:22:29 +0900 [thread overview] Message-ID: <20110128122229.6a4c74a2.kamezawa.hiroyu@jp.fujitsu.com> (raw) On recent -mm, when I run make -j 8 under 200M limit of memcg, as == # mount -t cgroup none /cgroup/memory -o memory # mkdir /cgroup/memory/A # echo 200M > /cgroup/memory/A/memory.limit_in_bytes # echo $$ > /cgroup/memory/A/tasks # make -j 8 kernel == I see hangs with khugepaged. That's because memcg's memory reclaim routine doesn't handle HUGE_PAGE request in proper way. And khugepaged doesn't know about memcg. This patch set is for fixing above hang. Patch 1-3 seems obvious and has the same concept as patches in RHEL. Patch 4 may need discussion. I think this version is much simpler because I dropped almost all cosmetics. Please review. This patch is onto mmotm-0125. Thanks, -Kame
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From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> To: "linux-mm@kvack.org" <linux-mm@kvack.org> Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "hannes@cmpxchg.org" <hannes@cmpxchg.org>, "nishimura@mxp.nes.nec.co.jp" <nishimura@mxp.nes.nec.co.jp>, "balbir@linux.vnet.ibm.com" <balbir@linux.vnet.ibm.com> Subject: [BUGFIX][PATCH 0/4] Fixes for memcg with THP Date: Fri, 28 Jan 2011 12:22:29 +0900 [thread overview] Message-ID: <20110128122229.6a4c74a2.kamezawa.hiroyu@jp.fujitsu.com> (raw) On recent -mm, when I run make -j 8 under 200M limit of memcg, as == # mount -t cgroup none /cgroup/memory -o memory # mkdir /cgroup/memory/A # echo 200M > /cgroup/memory/A/memory.limit_in_bytes # echo $$ > /cgroup/memory/A/tasks # make -j 8 kernel == I see hangs with khugepaged. That's because memcg's memory reclaim routine doesn't handle HUGE_PAGE request in proper way. And khugepaged doesn't know about memcg. This patch set is for fixing above hang. Patch 1-3 seems obvious and has the same concept as patches in RHEL. Patch 4 may need discussion. I think this version is much simpler because I dropped almost all cosmetics. Please review. This patch is onto mmotm-0125. Thanks, -Kame -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next reply other threads:[~2011-01-28 3:29 UTC|newest] Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top 2011-01-28 3:22 KAMEZAWA Hiroyuki [this message] 2011-01-28 3:22 ` [BUGFIX][PATCH 0/4] Fixes for memcg with THP KAMEZAWA Hiroyuki 2011-01-28 3:24 ` [BUGFIX][PATCH 1/4] memcg: fix limit estimation at reclaim for hugepage KAMEZAWA Hiroyuki 2011-01-28 3:24 ` KAMEZAWA Hiroyuki 2011-01-28 4:40 ` Daisuke Nishimura 2011-01-28 4:40 ` Daisuke Nishimura 2011-01-28 4:49 ` KAMEZAWA Hiroyuki 2011-01-28 4:49 ` KAMEZAWA Hiroyuki 2011-01-28 4:58 ` KAMEZAWA Hiroyuki 2011-01-28 4:58 ` KAMEZAWA Hiroyuki 2011-01-28 5:36 ` Daisuke Nishimura 2011-01-28 5:36 ` Daisuke Nishimura 2011-01-28 8:04 ` Minchan Kim 2011-01-28 8:04 ` Minchan Kim 2011-01-28 8:17 ` Johannes Weiner 2011-01-28 8:17 ` Johannes Weiner 2011-01-28 8:25 ` Minchan Kim 2011-01-28 8:25 ` Minchan Kim 2011-01-28 8:36 ` KAMEZAWA Hiroyuki 2011-01-28 8:36 ` KAMEZAWA Hiroyuki 2011-01-30 2:26 ` Minchan Kim 2011-01-30 2:26 ` Minchan Kim 2011-01-28 8:41 ` Johannes Weiner 2011-01-28 8:41 ` Johannes Weiner 2011-01-28 8:24 ` KAMEZAWA Hiroyuki 2011-01-28 8:24 ` KAMEZAWA Hiroyuki 2011-01-28 8:37 ` Minchan Kim 2011-01-28 8:37 ` Minchan Kim 2011-01-28 7:52 ` Johannes Weiner 2011-01-28 7:52 ` Johannes Weiner 2011-01-28 8:06 ` KAMEZAWA Hiroyuki 2011-01-28 8:06 ` KAMEZAWA Hiroyuki 2011-01-28 3:26 ` [BUGFIX][PATCH 2/4] memcg: fix charge path for THP and allow early retirement KAMEZAWA Hiroyuki 2011-01-28 3:26 ` KAMEZAWA Hiroyuki 2011-01-28 5:37 ` Daisuke Nishimura 2011-01-28 5:37 ` Daisuke Nishimura 2011-01-28 7:57 ` Johannes Weiner 2011-01-28 7:57 ` Johannes Weiner 2011-01-28 8:14 ` KAMEZAWA Hiroyuki 2011-01-28 8:14 ` KAMEZAWA Hiroyuki 2011-01-28 9:02 ` Johannes Weiner 2011-01-28 9:02 ` Johannes Weiner 2011-01-28 9:16 ` KAMEZAWA Hiroyuki 2011-01-28 9:16 ` KAMEZAWA Hiroyuki 2011-01-28 3:27 ` [BUGFIX][PATCH 3/4] mecg: fix oom flag at THP charge KAMEZAWA Hiroyuki 2011-01-28 3:27 ` KAMEZAWA Hiroyuki 2011-01-28 5:39 ` Daisuke Nishimura 2011-01-28 5:39 ` Daisuke Nishimura 2011-01-28 5:50 ` KAMEZAWA Hiroyuki 2011-01-28 5:50 ` KAMEZAWA Hiroyuki 2011-01-28 8:02 ` Johannes Weiner 2011-01-28 8:02 ` Johannes Weiner 2011-01-28 8:21 ` KAMEZAWA Hiroyuki 2011-01-28 8:21 ` KAMEZAWA Hiroyuki 2011-01-31 7:41 ` Balbir Singh 2011-01-31 7:41 ` Balbir Singh 2011-01-28 3:28 ` [BUGFIX][PATCH 4/4] memcg: fix khugepaged should skip busy memcg KAMEZAWA Hiroyuki 2011-01-28 3:28 ` KAMEZAWA Hiroyuki 2011-01-28 8:20 ` Daisuke Nishimura 2011-01-28 8:20 ` Daisuke Nishimura 2011-01-28 8:30 ` KAMEZAWA Hiroyuki 2011-01-28 8:30 ` KAMEZAWA Hiroyuki 2011-01-29 12:47 ` [BUGFIX][PATCH 0/4] Fixes for memcg with THP Balbir Singh 2011-01-29 12:47 ` Balbir Singh 2011-01-30 23:55 ` KAMEZAWA Hiroyuki 2011-01-30 23:55 ` KAMEZAWA Hiroyuki
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