Before Linux kernel 2.6, super_operations (include/linux/fs.h) have both read_inode and write_inode functions. But newer kernel does not have read_inode any more, then when and how does the VFS read in inode information from specific file system implementation? What is the new course of inode related processing in VFS?
Do you have any updated materials on how to implement file systems under NEW kernel VFS?
The answer is practically in the commit log.
Edit: See the immediate parent commits of that one for how the practical transformation looks in the file systems.