Hi, In the struct super_block in linux/fs.h there is a union which has the union u which points to the super_block_info of different file systems. Could someone tell me what this super_block_info is and what it is used for. Is there any particular format for the structure. Is there any documentation on this on the web. Also I think to add a filesystem I have to use the generic_spb pointer in this union. Any pointers are appreciated. Thanks, VS __________________________________________________ Do you Yahoo!? Yahoo! News - Today's headlines http://news.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/