staging: android: ion: Remove unused members from ion_buffer

	buffer->dev = dev;

	buffer->size = len;

	INIT_LIST_HEAD(&buffer->vmas);

	INIT_LIST_HEAD(&buffer->attachments);

	mutex_init(&buffer->lock);

	mutex_lock(&dev->buffer_lock);

	if (WARN_ON(buffer->kmap_cnt > 0))

		buffer->heap->ops->unmap_kernel(buffer->heap, buffer);

	buffer->heap->ops->free(buffer);

	vfree(buffer->pages);

	kfree(buffer);

}

 * @kmap_cnt:		number of times the buffer is mapped to the kernel

 * @vaddr:		the kernel mapping if kmap_cnt is not zero

 * @sg_table:		the sg table for the buffer if dmap_cnt is not zero

 * @pages:		flat array of pages in the buffer -- used by fault

 *			handler and only valid for buffers that are faulted in

 * @vmas:		list of vma's mapping this buffer

 * @handle_count:	count of handles referencing this buffer

 * @task_comm:		taskcomm of last client to reference this buffer in a

 *			handle, used for debugging

 * @pid:		pid of last client to reference this buffer in a

 *			handle, used for debugging

 */

struct ion_buffer {

	union {

	int kmap_cnt;

	void *vaddr;

	struct sg_table *sg_table;

	struct page **pages;

	struct list_head vmas;

	struct list_head attachments;

	/* used to track orphaned buffers */

	int handle_count;

	char task_comm[TASK_COMM_LEN];

	pid_t pid;

};

void ion_buffer_destroy(struct ion_buffer *buffer);