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Date: Wed, 16 Feb 2011 17:51:23 -0800 From: Greg Thelen <gthelen@...gle.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: Randy Dunlap <rdunlap@...otime.net>, KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>, Daisuke Nishimura <nishimura@....nes.nec.co.jp>, Jiri Kosina <jkosina@...e.cz>, linux-mm@...r.kernel.org, linux-kernel@...r.kernel.org, Greg Thelen <gthelen@...gle.com> Subject: [PATCH] memcg: clarify use_hierarchy documentation The memcg code does not allow changing memory.use_hierarchy if the parent cgroup has enabled use_hierarchy. Update documentation to match the code. Signed-off-by: Greg Thelen <gthelen@...gle.com> --- Documentation/cgroups/memory.txt | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt index 7781857..b6ed61c 100644 --- a/Documentation/cgroups/memory.txt +++ b/Documentation/cgroups/memory.txt @@ -485,8 +485,9 @@ The feature can be disabled by # echo 0 > memory.use_hierarchy -NOTE1: Enabling/disabling will fail if the cgroup already has other - cgroups created below it. +NOTE1: Enabling/disabling will fail if either the cgroup already has other + cgroups created below it, or if the parent cgroup has use_hierarchy + enabled. NOTE2: When panic_on_oom is set to "2", the whole system will panic in case of an OOM event in any cgroup. -- 1.7.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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