On 2024/10/11 0:26, Mickaël Salaün wrote: > When a filesystem manages its own inode numbers, like NFS's fileid shown > to user space with getattr(), other part of the kernel may still expose > the private inode->ino through kernel logs and audit. I can't catch what you are trying to do. What is wrong with that? > Another issue is on 32-bit architectures, on which ino_t is 32 bits, > whereas the user space's view of an inode number can still be 64 bits. Currently, ino_t is 32bits on 32-bit architectures, isn't it? Why do you need to use 64bits on 32-bit architectures? > Add a new inode_get_ino() helper calling the new struct > inode_operations' get_ino() when set, to get the user space's view of an > inode number. inode_get_ino() is called by generic_fillattr(). What does the user space's view of an inode number mean? What does the kernel space's view of an inode number mean?