Function rdev_eraseat

src/commonlib/region.c:115–135

}

ssize_t rdev_eraseat(const struct region_device *rd, size_t offset,
			size_t size)
{
	const struct region_device *rdev;
	struct region req = {
		.offset = offset,
		.size = size,
	};

	if (!normalize_and_ok(&rd->region, &req))
		return -1;

	rdev = rdev_root(rd);

	/* If the eraseat ptr is NULL we assume that the erase
	 * function was completed successfully. */
	if (rdev->ops->eraseat == NULL)
		return size;

	return rdev->ops->eraseat(rdev, req.offset, req.size);
}

int rdev_chain(struct region_device *child, const struct region_device *parent,
		size_t offset, size_t size)