cgroups.7: Document the use of 'cgroup_no_v1=named' to disable v1 named hierarchies

This feature was added in Linux 5.0.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man7/cgroups.7 b/man7/cgroups.7
index 1a8fa25eceebbe631a477031ec7299ca9a4d10a3..7004e3f9f5c12eee360a4b3c19b3df0b5b8f0e4f 100644 (file)
--- a/man7/cgroups.7
+++ b/man7/cgroups.7
@@ -516,6 +516,13 @@ An example of this is the
 cgroup hierarchy that is used by
 .BR systemd (1)
 to track services and user sessions.
+.PP
+Since Linux 5.0, the
+.I cgroup_no_v1
+kernel boot option (described below) can be used to disable cgroup v1
+named hierarchies, by specifying
+.IR cgroup_no_v1=named .
+
 .\"
 .SH CGROUPS VERSION 2
 In cgroups v2,