cgroup: keep zombies associated with their original cgroups

[mirror_ubuntu-zesty-kernel.git] / Documentation / cgroups / unified-hierarchy.txt

diff --git a/Documentation/cgroups/unified-hierarchy.txt b/Documentation/cgroups/unified-hierarchy.txt
index 176b940f8327936c97efa50e96188b26d773041e..6932453d37a2ba0c0ed96c3848e996ecde56273c 100644 (file)
--- a/Documentation/cgroups/unified-hierarchy.txt
+++ b/Documentation/cgroups/unified-hierarchy.txt
@@ -374,6 +374,10 @@ supported and the interface files "release_agent" and
 
 - The "cgroup.clone_children" file is removed.
 
+- /proc/PID/cgroup keeps reporting the cgroup that a zombie belonged
+  to before exiting.  If the cgroup is removed before the zombie is
+  reaped, " (deleted)" is appeneded to the path.
+
 
 5-3. Controller File Conventions