diff options
Diffstat (limited to 'ipc/msg.c')
| -rw-r--r-- | ipc/msg.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/ipc/msg.c b/ipc/msg.c index 9f545826bcf..b7274dbf091 100644 --- a/ipc/msg.c +++ b/ipc/msg.c @@ -156,6 +156,13 @@ static inline void msg_rmid(struct ipc_namespace *ns, struct msg_queue *s) ipc_rmid(&msg_ids(ns), &s->q_perm); } +/** + * newque - Create a new msg queue + * @ns: namespace + * @params: ptr to the structure that contains the key and msgflg + * + * Called with msg_ids.mutex held + */ static int newque(struct ipc_namespace *ns, struct ipc_params *params) { struct msg_queue *msq; @@ -250,8 +257,8 @@ static void expunge_all(struct msg_queue *msq, int res) /* * freeque() wakes up waiters on the sender and receiver waiting queue, - * removes the message queue from message queue ID - * IDR, and cleans up all the messages associated with this queue. + * removes the message queue from message queue ID IDR, and cleans up all the + * messages associated with this queue. * * msg_ids.mutex and the spinlock for this message queue are held * before freeque() is called. msg_ids.mutex remains locked on exit. @@ -278,6 +285,9 @@ static void freeque(struct ipc_namespace *ns, struct msg_queue *msq) ipc_rcu_putref(msq); } +/* + * Called with msg_ids.mutex and ipcp locked. + */ static inline int msg_security(struct kern_ipc_perm *ipcp, int msgflg) { struct msg_queue *msq = container_of(ipcp, struct msg_queue, q_perm); |