static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)
{
	ext4_io_end_t *io_end = bh->b_private;
	struct workqueue_struct *wq;
	struct inode *inode;
	unsigned long flags;

	if (!test_clear_buffer_uninit(bh) || !io_end)
		goto out;

	if (!(io_end->inode->i_sb->s_flags & MS_ACTIVE)) {
		printk("sb umounted, discard end_io request for inode %lu\n",
			io_end->inode->i_ino);
		ext4_free_io_end(io_end);
		goto out;
	}

	io_end->flag = EXT4_IO_UNWRITTEN;
	inode = io_end->inode;

	/* Add the io_end to per-inode completed io list*/
	spin_lock_irqsave(&EXT4_I(inode)->i_completed_io_lock, flags);
	list_add_tail(&io_end->list, &EXT4_I(inode)->i_completed_io_list);
	spin_unlock_irqrestore(&EXT4_I(inode)->i_completed_io_lock, flags);

	wq = EXT4_SB(inode->i_sb)->dio_unwritten_wq;
	/* queue the work to convert unwritten extents to written */
	queue_work(wq, &io_end->work);
out:
	bh->b_private = NULL;
	bh->b_end_io = NULL;
	clear_buffer_uninit(bh);
	end_buffer_async_write(bh, uptodate);
}
NVD is only using a subset of CWE for mapping instead of the entire CWE, and the weakness type is not covered by that subset.