On Fri, Jan 13, 2023 at 12:49:11PM +0100, Christian Brauner wrote: > +extern int affs_notify_change(struct mnt_idmap *idmap, > struct dentry *dentry, struct iattr *attr); Please drop the pointless externs for anything you touch in the series. > +extern int ext2_setattr (struct mnt_idmap *, struct dentry *, struct iattr *); I'd also fix up the very odd opening brace formatting in ext2 while you're at it, which is only used inconsistently anyway.