On 5/30/22 08:04, Pádraig Brady wrote:
Really the kernel has to behave appropriately there and not do the blanket assumption with EXDEV.
I agree. VFS should be willing to try a cross-filesystem FICLONE. Not only does copy_file_range not guarantee cloning; it is less efficient even when it does clone, due to the need to find the holes in the source file.
