File-copy from v4.4.100
This is the result of 'cp' from a linux-stable tree with the 'v4.4.100'
tag checked out (commit 26d6298789e695c9f627ce49a7bbd2286405798a) on
git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Please refer to that tree for all history prior to this point.
Change-Id: I8a9ee2aea93cd29c52c847d0ce33091a73ae6afe
diff --git a/include/media/videobuf2-memops.h b/include/media/videobuf2-memops.h
new file mode 100644
index 0000000..36565c7
--- /dev/null
+++ b/include/media/videobuf2-memops.h
@@ -0,0 +1,40 @@
+/*
+ * videobuf2-memops.h - generic memory handling routines for videobuf2
+ *
+ * Copyright (C) 2010 Samsung Electronics
+ *
+ * Author: Pawel Osciak <pawel@osciak.com>
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation.
+ */
+
+#ifndef _MEDIA_VIDEOBUF2_MEMOPS_H
+#define _MEDIA_VIDEOBUF2_MEMOPS_H
+
+#include <media/videobuf2-v4l2.h>
+#include <linux/mm.h>
+
+/**
+ * struct vb2_vmarea_handler - common vma refcount tracking handler
+ *
+ * @refcount: pointer to refcount entry in the buffer
+ * @put: callback to function that decreases buffer refcount
+ * @arg: argument for @put callback
+ */
+struct vb2_vmarea_handler {
+ atomic_t *refcount;
+ void (*put)(void *arg);
+ void *arg;
+};
+
+extern const struct vm_operations_struct vb2_common_vm_ops;
+
+struct frame_vector *vb2_create_framevec(unsigned long start,
+ unsigned long length,
+ bool write);
+void vb2_destroy_framevec(struct frame_vector *vec);
+
+#endif