expunge_all

Name:expunge_all

Proto:static void expunge_all(struct msg_queue *msq, int res, struct wake_q_head *wake_q)

Type:void

Parameter:

Type	Parameter	Name
struct msg_queue *	msq
int	res
struct wake_q_head *	wake_q

240

wake_q_add() - queue a wakeup for 'later' waking

241

WRITE_ONCE(r_msg, ERR_PTR(res))

**Caller**
Name	Describe
freeque	que() 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.* msg_ids.rwsem (writer) and the spinlock for this message queue are held
msgctl_down	This function handles some msgctl commands which require the rwsem* to be held in write mode.* NOTE: no locks must be held, the rwsem is taken inside this function.

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