diff --git a/libs/ardour/ardour/disk_io.h b/libs/ardour/ardour/disk_io.h
index e6439ad08d..05131321a5 100644
--- a/libs/ardour/ardour/disk_io.h
+++ b/libs/ardour/ardour/disk_io.h
@@ -186,8 +186,6 @@ protected:
 	/* The MIDI stuff */
 
 	MidiRingBuffer<samplepos_t>*  _midi_buf;
-	gint                         _samples_written_to_ringbuffer;
-	gint                         _samples_read_from_ringbuffer;
 
 	static void get_location_times (const Location* location, samplepos_t* start, samplepos_t* end, samplepos_t* length);
 };
diff --git a/libs/ardour/disk_io.cc b/libs/ardour/disk_io.cc
index 389fa58dcd..8af3dd0c4c 100644
--- a/libs/ardour/disk_io.cc
+++ b/libs/ardour/disk_io.cc
@@ -58,8 +58,6 @@ DiskIOProcessor::DiskIOProcessor (Session& s, Track& t, string const & str, Flag
 	, _track (t)
 	, channels (new ChannelList)
 	, _midi_buf (0)
-	, _samples_written_to_ringbuffer (0)
-	, _samples_read_from_ringbuffer (0)
 {
 	set_display_to_user (false);
 }
diff --git a/libs/ardour/disk_writer.cc b/libs/ardour/disk_writer.cc
index 8dd787665c..33a780b76e 100644
--- a/libs/ardour/disk_writer.cc
+++ b/libs/ardour/disk_writer.cc
@@ -865,7 +865,7 @@ DiskWriter::configuration_changed ()
 }
 
 int
-DiskWriter::seek (samplepos_t sample, bool /*complete_refill*/)
+DiskWriter::seek (samplepos_t /*sample*/, bool /*complete_refill*/)
 {
 	uint32_t n;
 	ChannelList::iterator chan;
@@ -878,10 +878,7 @@ DiskWriter::seek (samplepos_t sample, bool /*complete_refill*/)
 	if (_midi_buf) {
 		_midi_buf->reset ();
 	}
-	g_atomic_int_set(&_samples_read_from_ringbuffer, 0);
-	g_atomic_int_set(&_samples_written_to_ringbuffer, 0);
 
-	playback_sample = sample;
 
 	return 0;
 }