* Memory protection directives can now take a value of zero, allowing
explicit opting out of a default value propagated by an ancestor.
+ * systemd now defaults to the "unified" cgroup hierarchy setup during
+ build-time, i.e. -Ddefault-hierarchy=unified is now the build-time
+ default. Previously, -Ddefault-hierarchy=hybrid was the default. This
+ change reflects the fact that cgroupsv2 support has matured
+ substantially in both systemd and in the kernel, and is clearly the
+ way forward. Downstream production distributions might want to
+ continue to use -Ddefault-hierarchy=hybrid (or even =legacy) for
+ their builds as unfortunately the popular container managers have not
+ caught up with the kernel API changes.
+
…
CHANGES WITH 242:
option('compat-gateway-hostname', type : 'boolean', value : 'false',
description : 'allow "gateway" as the symbolic name for default gateway')
option('default-hierarchy', type : 'combo',
- choices : ['legacy', 'hybrid', 'unified'], value : 'hybrid',
+ choices : ['legacy', 'hybrid', 'unified'], value : 'unified',
description : 'default cgroup hierarchy')
option('default-net-naming-scheme', type : 'combo',
choices : ['latest', 'v238', 'v239', 'v240'],