diff --git a/man7/cgroups.7 b/man7/cgroups.7
index 2705df4c0..2f945c3de 100644
--- a/man7/cgroups.7
+++ b/man7/cgroups.7
@@ -774,6 +774,29 @@ of a process for each notification.
 Second, notification can be delegated to a process that lives inside
 a container associated with the newly empty cgroup.
 .\"
+.SS Cgroups v2 cgroup.stat file
+.\" commit ec39225cca42c05ac36853d11d28f877fde5c42e
+Each cgroup in the v2 hierarchy contains a read-only
+.IR cgroup.stat
+file (first introduced in Linux 4.14)
+that consists of lines containing key-value pairs.
+The following keys currently appear in this file:
+.TP
+.I nr_descendants
+This is the total number of visible (i.e., living) descendant cgroups
+underneath this cgroup.
+.TP
+.I nr_dying_descendants
+This is the total number of dying descendant cgroups
+underneath this cgroup.
+A cgroup enters the dying state after being deleted.
+It remains in that state for an undefined period
+(which will depend on system load)
+before being destroyed.
+.IP
+A process can't be made a member of a dying cgroup,
+and a dying cgroup can't be brought back to life.
+.\"
 .SS Cgroups v2 delegation
 In the context of cgroups,
 delegation means passing management of some subtree