pid_namespaces.7: Update capability requirements for /proc/sys/kernel/ns_last_pid

Since Linux 5.9, CONFIG_CHECKPOINT_RESTORE also allows writing to
/proc/sys/kernel/ns_last_pid.

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

diff --git a/man7/pid_namespaces.7 b/man7/pid_namespaces.7
index 9d893fcf26c11d1c469cad03982b1f644921c85b..62ecd26a53566c22d844849e86faee7fc5e5468e 100644 (file)
--- a/man7/pid_namespaces.7
+++ b/man7/pid_namespaces.7
@@ -372,6 +372,8 @@ and when this file is subsequently read it will show that PID.
 .IP
 This file is writable by a process that has the
 .B CAP_SYS_ADMIN
+or (since Linux 5.9)
+.B CAP_CHECKPOINT_RESTORE
 capability inside the user namespace that owns the PID namespace.
 .\" This ability is necessary to support checkpoint restore in user-space
 This makes it possible to determine the PID that is allocated