NEWS: announce cgroup v1 deprecation

diff --git a/NEWS b/NEWS
index 1cac8d4ad79c2f1cfa52165f61145cdeb686c093..e7b673d650037da4d49593a3ef0e557b40f9d6a2 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -7,6 +7,13 @@ CHANGES WITH 256 in spe:
         * Support for flushing of the nscd user/group database caches will be
           dropped in a future release.
 
+        * Support for cgroup v1 ('legacy' and 'hybrid' hierarchies) is now
+          considered obsolete and systemd by default will refuse to boot under it.
+          To forcibly reenable cgroup v1 support, SYSTEMD_CGROUP_ENABLE_LEGACY_FORCE=1
+          must be set on kernel command line. The meson option 'default-hierarchy='
+          is also deprecated, i.e. only cgroup v2 ('unified' hierarchy) can be
+          selected as build-time default.
+
         * Previously, systemd-networkd did not explicitly remove any bridge VLAN
           IDs assigned on bridge master and ports. Since v256, if a .network
           file for an interface has at least one valid settings in [BridgeVLAN]