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-rw-r--r--sd_login/notes.org3
1 files changed, 2 insertions, 1 deletions
diff --git a/sd_login/notes.org b/sd_login/notes.org
index 38e866b..91a237a 100644
--- a/sd_login/notes.org
+++ b/sd_login/notes.org
@@ -38,7 +38,8 @@ tree, where the unit matches either `user@UID.service` or
A container may nest its cgroup tree inside of a unit also. Because
the container will have its own PID namespace, it will have its own
PID 1, and be able to inspect the cgroup of PID 1, just as the host
-system does.
+system does (though it is probably wiser to use cgroup namespaces to
+make it appear that the prefix is the root).
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