diff options
Diffstat (limited to 'ipc/sem.c')
| -rw-r--r-- | ipc/sem.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/ipc/sem.c b/ipc/sem.c index 19af028a3e38..cb5bb2a5df96 100644 --- a/ipc/sem.c +++ b/ipc/sem.c @@ -381,6 +381,7 @@ static void update_queue (struct sem_array * sma) /* hands-off: q will disappear immediately after * writing q->status. */ + smp_wmb(); q->status = error; q = n; } else { @@ -461,6 +462,7 @@ static void freeary (struct sem_array *sma, int id) n = q->next; q->status = IN_WAKEUP; wake_up_process(q->sleeper); /* doesn't sleep */ + smp_wmb(); q->status = -EIDRM; /* hands-off q */ q = n; } |