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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-07-31 21:14:26 -0400
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2016-07-31 21:15:17 -0400
commit0d5299ef5a5bedb8921275741d6cbdcc04d69286 (patch)
treebef886d47028c081abdd7bcee09229463c4da276 /man/systemd.resource-control.xml
parent0fbd465f4138dd2c3c7428c23cae117a7b56568d (diff)
parentc23b2c70bf65d3fdf869c60eee4072b1d4e5905b (diff)
Merge pull request #3843 from maxime1986/minor-systemd.resource-control
Diffstat (limited to 'man/systemd.resource-control.xml')
-rw-r--r--man/systemd.resource-control.xml14
1 files changed, 11 insertions, 3 deletions
diff --git a/man/systemd.resource-control.xml b/man/systemd.resource-control.xml
index bf44a68345..0e98ca78b8 100644
--- a/man/systemd.resource-control.xml
+++ b/man/systemd.resource-control.xml
@@ -99,9 +99,10 @@
<refsect1>
<title>Unified and Legacy Control Group Hierarchies</title>
- <para>The unified control group hierarchy is the new version of kernel control group interface. Depending on the
- resource type, there are differences in resource control capabilities. Also, because of interface changes, some
- resource types have a separate set of options on the unified hierarchy.</para>
+ <para>The unified control group hierarchy is the new version of kernel control group interface, see <ulink
+ url="https://www.kernel.org/doc/Documentation/cgroup-v2.txt">cgroup-v2.txt</ulink>. Depending on the resource type,
+ there are differences in resource control capabilities. Also, because of interface changes, some resource types
+ have separate set of options on the unified hierarchy.</para>
<para>
<variablelist>
@@ -126,6 +127,13 @@
settings of a unit for a given resource type are for the other hierarchy type, the settings are translated and
applied. If there are any valid settings for the hierarchy in use, all translations are disabled for the resource
type. Mixing the two types of settings on a unit can lead to confusing results.</para>
+
+ <para>Legacy control group hierarchy (see <ulink
+ url="https://www.kernel.org/doc/Documentation/cgroup-v1/cgroups.txt">cgroups.txt</ulink>), also called cgroup-v1,
+ doesn't allow safe delegation of controllers to unprivileged processes. If the system uses the legacy control group
+ hierarchy, resource control is disabled for systemd user instance, see
+ <citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>.
+ </para>
</refsect1>
<refsect1>