Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  block: make unplug timer trace event correspond to the schedule() unplug
  block: let io_schedule() flush the plug inline

2 files changed, 20 insertions, 6 deletions

diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 1c76506fcf1..ec0357d8c4a 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -872,6 +872,14 @@ static inline void blk_flush_plug(struct task_struct *tsk)
 	struct blk_plug *plug = tsk->plug;
 
 	if (plug)
+		blk_flush_plug_list(plug, false);
+}
+
+static inline void blk_schedule_flush_plug(struct task_struct *tsk)
+{
+	struct blk_plug *plug = tsk->plug;
+
+	if (plug)
 		blk_flush_plug_list(plug, true);
 }
 
@@ -1317,6 +1325,11 @@ static inline void blk_flush_plug(struct task_struct *task)
 {
 }
 
+static inline void blk_schedule_flush_plug(struct task_struct *task)
+{
+}
+
+
 static inline bool blk_needs_flush_plug(struct task_struct *tsk)
 {
 	return false;
diff --git a/include/trace/events/block.h b/include/trace/events/block.h
index 006e60b5830..bf366547da2 100644
--- a/include/trace/events/block.h
+++ b/include/trace/events/block.h
@@ -401,9 +401,9 @@ TRACE_EVENT(block_plug,
 
 DECLARE_EVENT_CLASS(block_unplug,
 
-	TP_PROTO(struct request_queue *q, unsigned int depth),
+	TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
 
-	TP_ARGS(q, depth),
+	TP_ARGS(q, depth, explicit),
 
 	TP_STRUCT__entry(
 		__field( int,		nr_rq			)
@@ -419,18 +419,19 @@ DECLARE_EVENT_CLASS(block_unplug,
 );
 
 /**
- * block_unplug_io - release of operations requests in request queue
+ * block_unplug - release of operations requests in request queue
  * @q: request queue to unplug
  * @depth: number of requests just added to the queue
+ * @explicit: whether this was an explicit unplug, or one from schedule()
  *
  * Unplug request queue @q because device driver is scheduled to work
  * on elements in the request queue.
  */
-DEFINE_EVENT(block_unplug, block_unplug_io,
+DEFINE_EVENT(block_unplug, block_unplug,
 
-	TP_PROTO(struct request_queue *q, unsigned int depth),
+	TP_PROTO(struct request_queue *q, unsigned int depth, bool explicit),
 
-	TP_ARGS(q, depth)
+	TP_ARGS(q, depth, explicit)
 );
 
 /**