On Thu, 28 Aug 2025 14:06:39 -0700 Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > So you can certainly use siphash for hashing, but make sure to not use > the same secret key that the printing does. Right, I just meant to use the same algorithm. The key would be different. > > As to the ID to hash, I actually think a 'struct file *' might be the > best thing to use - that's directly in the vma, no need to follow any > other pointers for it. But that's unique per task, right? What I liked about the f_inode pointer, is that it appears to be shared between tasks. I only want to add a new hash and print the path for a new file. If several tasks are using the same file (which they are with the libraries), then having the hash be the same between tasks would be more efficient. -- Steve
