Re: [Help] How to Replace File Operations in File System?

Hi Rishi, Thanks for your reply! I'm sorry that the description of the problem was not clear. I am writing a module(not a filesystem) to replace some operation pointers of Ext4. Just now, I try to print the dentry->name as you said. It seems that I'm modifying the right files. I'm wonderring if my idea is bad: I changed operations of a file both in ->create and ->lookup in inode operations of direcotry. And test the module like this: echo hello > hello (for dir_inode->create and f->write) cat hello (for f->read) Will the file operations be changed back? Or what I modified is some copies of real objects because of the complex caching mechanism? Regards Freeman Zhang