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cgroup: Polish hierarchically aware protection docs a bit

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I missed adding a section in `systemd.resource-control` about
DefaultMemoryMin in #12332.

Also, add a NEWS entry going over the general concept.
This commit is contained in:
Chris Down 2019-04-30 14:22:04 -04:00
parent fd0a16d8a5
commit acdb4b5236
3 changed files with 12 additions and 2 deletions
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5
NEWS
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@ -19,6 +19,11 @@ CHANGES WITH 243 in spe:
are harder to type, but we believe the change from 5 digit PIDs to 7
digit PIDs is not too hampering for usability.
* MemoryLow and MemoryMin gained hierarchy-aware counterparts,
DefaultMemoryLow and DefaultMemoryMin, which can be used to
hierarchically set default memory protection values for a particular
subtree of the unit hierarchy.
…
CHANGES WITH 242:

1
docs/TRANSIENT-SETTINGS.md
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@ -227,6 +227,7 @@ All cgroup/resource control settings are available for transient units
✓ CPUQuota=
✓ CPUQuotaPeriodSec=
✓ MemoryAccounting=
✓ DefaultMemoryMin=
✓ MemoryMin=
✓ DefaultMemoryLow=
✓ MemoryLow=

8
man/systemd.resource-control.xml
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@ -245,6 +245,10 @@
<para>This setting is supported only if the unified control group hierarchy is used and disables
<varname>MemoryLimit=</varname>.</para>
<para>Units may have their children use a default <literal>memory.min</literal> value by specifying
<varname>DefaultMemoryMin=</varname>, which has the same semantics as <varname>MemoryMin=</varname>. This setting
does not affect <literal>memory.min</literal> in the unit itself.</para>
</listitem>
</varlistentry>
@ -266,8 +270,8 @@
<para>This setting is supported only if the unified control group hierarchy is used and disables
<varname>MemoryLimit=</varname>.</para>
<para>Units may can have their children use a default <literal>memory.low</literal> value by specifying
<varname>DefaultMemoryLow=</varname>, which has the same usage as <varname>MemoryLow=</varname>. This setting
<para>Units may have their children use a default <literal>memory.low</literal> value by specifying
<varname>DefaultMemoryLow=</varname>, which has the same semantics as <varname>MemoryLow=</varname>. This setting
does not affect <literal>memory.low</literal> in the unit itself.</para>
</listitem>
</varlistentry>