If copy_file_range performs a copy using splice, it converts holes to zeros. This effort primarily changes this behavior to create holes when it is possible. Even if copy_file_range() or clone_file_range() does not work for different mounted filesystems, We should be able to splice files if they do not belong the same super_block. Changes since v0: - [Amir] Carved out do_copy_file_range() which can be used by overlayfs -- Goldwyn -- To unsubscribe from this list: send the line "unsubscribe linux-unionfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
