Hi Tapani, > /usr/src/modules/cloop/compressed_loop.c:628: error: too many arguments to function 'invalidate_bdev' I had the same problem with the loop-aes-source. If you look at line 628 in /usr/src/modules/cloop/compressed_loop.c there should be a "invalidate_bdev(bdev, 0)" function call. When you remove the last argument it will probably work. Greetings, Fabian