diff --git a/include/media/AudioRecord.h b/include/media/AudioRecord.h
index b3c44a8..6a68c94 100644
--- a/include/media/AudioRecord.h
+++ b/include/media/AudioRecord.h
@@ -490,10 +490,12 @@
     int                     mSessionId;
     transfer_type           mTransfer;
 
-    // Next 4 fields may be changed if IAudioRecord is re-created, but always != 0
+    // Next 5 fields may be changed if IAudioRecord is re-created, but always != 0
+    // provided the initial set() was successful
     sp<IAudioRecord>        mAudioRecord;
     sp<IMemory>             mCblkMemory;
     audio_track_cblk_t*     mCblk;              // re-load after mLock.unlock()
+    sp<IMemory>             mBufferMemory;
     audio_io_handle_t       mInput;             // returned by AudioSystem::getInput()
 
     int                     mPreviousPriority;  // before start()
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 9101f06..7db6a48 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -88,6 +88,8 @@
                                 track_flags_t *flags,
                                 pid_t tid,  // -1 means unused, otherwise must be valid non-0
                                 int *sessionId,
+                                sp<IMemory>& cblk,
+                                sp<IMemory>& buffers,   // return value 0 means it follows cblk
                                 status_t *status) = 0;
 
     /* query the audio hardware state. This state never changes,