Hi, I have problems understanding the purpose of different entries of struc address_space_operations: 1. What is bmap for and what is it supposed to do? 2. What is the difference between sync_page and write_page? 3. What exactly (fs independent) is the relation in between write_page, prepare_write and commit_write? 4. What is direct_IO for? Thak you very much for any insight, Martin -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/