diff --git a/man7/cgroups.7 b/man7/cgroups.7
index a57652d2e..a03951a08 100644
--- a/man7/cgroups.7
+++ b/man7/cgroups.7
@@ -532,6 +532,9 @@ file.
 For more changes, see the
 .I Documentation/cgroup-v2.txt
 file in the kernel source.
+.PP
+Some of the new behaviors listed above saw subsequent modification with
+the addition in Linux 4.14 of "thread mode" (described below).
 .\"
 .SS Cgroups v2 unified hierarchy
 In cgroups v1, the ability to mount different controllers
@@ -724,6 +727,9 @@ possible for a cgroup to have both member processes and child cgroups,
 but before controllers can be enabled for that cgroup,
 the member processes must be moved out of the cgroup
 (e.g., perhaps into the child cgroups).
+.PP
+With the Linux 4.14 addition of "thread mode" (described below),
+the "no internal processes" rule has been relaxed in some cases.
 .\"
 .SS Cgroups v2 cgroup.events file
 With cgroups v2, a new mechanism is provided to obtain notification