sysvipc: duplicate lock comments wrt ipc_addid()

[mirror_ubuntu-bionic-kernel.git] / ipc / sem.c

diff --git a/ipc/sem.c b/ipc/sem.c
index b2698ebdcb31e65ea2f3e94f64cc567607b8ca2a..28a5c9f0be876bd6614cd9a6e6a04214b5b68747 100644 (file)
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -515,6 +515,7 @@ static int newary(struct ipc_namespace *ns, struct ipc_params *params)
        sma->sem_nsems = nsems;
        sma->sem_ctime = ktime_get_real_seconds();
 
+       /* ipc_addid() locks sma upon success. */
        retval = ipc_addid(&sem_ids(ns), &sma->sem_perm, ns->sc_semmni);
        if (retval < 0) {
                call_rcu(&sma->sem_perm.rcu, sem_rcu_free);