On Thu, Jul 04, 2024 at 11:07:03AM +0800, Hongbo Li wrote: > + TP_printk("dev = (%d,%d), ino = %lu, dir = %lu, mode = 0%o", > + MAJOR(__entry->dev), MINOR(__entry->dev), > + (unsigned long) __entry->ino, > + (unsigned long) __entry->dir, __entry->mode) erofs and f2fs are the only two places that print devices like this. "dev=%d:%d inode=%lx" Why do we need dir and mode? Actually, why do we need a tracepoint on alloc_inode at all? What does it help us debug, and why does no other filesystem need an alloc_inode tracepoint?