diff options
Diffstat (limited to 'ipc/mqueue.c')
| -rw-r--r-- | ipc/mqueue.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c index bb0248f..af0c6bb 100644 --- a/ipc/mqueue.c +++ b/ipc/mqueue.c @@ -923,12 +923,17 @@ static inline void pipelined_send(struct mqueue_inode_info *info, struct msg_msg *message, struct ext_wait_queue *receiver) { + /* + * Keep them in one critical section for PREEMPT_RT: + */ + preempt_disable_rt(); receiver->msg = message; list_del(&receiver->list); receiver->state = STATE_PENDING; wake_up_process(receiver->task); smp_wmb(); receiver->state = STATE_READY; + preempt_enable_rt(); } /* pipelined_receive() - if there is task waiting in sys_mq_timedsend() |