1 files changed, 18 insertions, 0 deletions

diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c
index 0ffa20ae657b..a104879e88f2 100644
--- a/kernel/sched/wait.c
+++ b/kernel/sched/wait.c
@@ -502,3 +502,21 @@ void wake_up_atomic_t(atomic_t *p)
         __wake_up_bit(atomic_t_waitqueue(p), p, WAIT_ATOMIC_T_BIT_NR);
 }
 EXPORT_SYMBOL(wake_up_atomic_t);
+
+__sched int bit_wait(void *word)
+{
+        if (signal_pending_state(current->state, current))
+                return 1;
+        schedule();
+        return 0;
+}
+EXPORT_SYMBOL(bit_wait);
+
+__sched int bit_wait_io(void *word)
+{
+        if (signal_pending_state(current->state, current))
+                return 1;
+        io_schedule();
+        return 0;
+}
+EXPORT_SYMBOL(bit_wait_io);