Re: [RFC PATCH v1 1/7] fs: Add inode_get_ino() and implement get_ino() for NFS

On Fri, Oct 11, 2024 at 07:39:33AM -0700, Christoph Hellwig wrote:

On Fri, Oct 11, 2024 at 03:52:42PM +0200, Mickaël Salaün wrote:

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Yes, but how do you call getattr() without a path?

You don't because inode numbers are irrelevant without the path.

They are for kernel messages and audit logs.  Please take a look at the
use cases with the other patches.

It still is useless.  E.g. btrfs has duplicate inode numbers due to
subvolumes.

At least it reflects what users see.

If you want a better pretty but not useful value just work on making
i_ino 64-bits wide, which is long overdue.

That would require too much work for me, and this would be a pain to
backport to all stable kernels.