[Suspend2][ 07/32] [Suspend2] Wait for bio completion.

[Nigel Cunningham <nigel@suspend2.net>]

Submit any outstanding batched I/O, kick kblockd, io_schedule() and see
what we can cleanup.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 kernel/power/suspend_block_io.c |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/kernel/power/suspend_block_io.c b/kernel/power/suspend_block_io.c
index cfff687..6f8b29e 100644
--- a/kernel/power/suspend_block_io.c
+++ b/kernel/power/suspend_block_io.c
@@ -310,3 +310,26 @@ static void suspend_cleanup_some_complet
 	spin_unlock_irqrestore(&ioinfo_ready_lock, flags);
 }
 
+/* do_bio_wait
+ *
+ * Actions taken when we want some I/O to get run.
+ * 
+ * Submit any I/O that's batched up (if we're not already doing
+ * that, unplug queues, schedule and clean up whatever we can.
+ */
+static void do_bio_wait(int caller)
+{
+	int num_submitted = 0;
+
+	nr_schedule_calls[caller]++;
+	
+	/* Don't want to wait on I/O we haven't submitted! */
+	num_submitted = submit_batched();
+
+	kblockd_flush();
+	
+	io_schedule();
+
+	suspend_cleanup_some_completed_io();
+}
+

--
Nigel Cunningham		nigel at suspend2 dot net
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