ipc_seq_pid_ns 1290 ipc/msg.c struct pid_namespace *pid_ns = ipc_seq_pid_ns(s); ipc_seq_pid_ns 1741 ipc/shm.c struct pid_namespace *pid_ns = ipc_seq_pid_ns(s); ipc_seq_pid_ns 119 ipc/util.h struct pid_namespace *ipc_seq_pid_ns(struct seq_file *);