SLUB: minimum alignment fixes

[linux-drm-fsl-dcu.git] / mm / backing-dev.c

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index f50a2811f9dc86b876d24e75333558583c075f1d..e5de3781d3feed5b6f156b064b4af8bb79871fed 100644 (file)
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -55,6 +55,22 @@ long congestion_wait(int rw, long timeout)
 }
 EXPORT_SYMBOL(congestion_wait);
 
+long congestion_wait_interruptible(int rw, long timeout)
+{
+       long ret;
+       DEFINE_WAIT(wait);
+       wait_queue_head_t *wqh = &congestion_wqh[rw];
+
+       prepare_to_wait(wqh, &wait, TASK_INTERRUPTIBLE);
+       if (signal_pending(current))
+               ret = -ERESTARTSYS;
+       else
+               ret = io_schedule_timeout(timeout);
+       finish_wait(wqh, &wait);
+       return ret;
+}
+EXPORT_SYMBOL(congestion_wait_interruptible);
+
 /**
  * congestion_end - wake up sleepers on a congested backing_dev_info
  * @rw: READ or WRITE