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

Jan Kara
2024-10-17T16:43:40Z

On Thu 17-10-24 08:25:19, Christoph Hellwig wrote:
> On Thu, Oct 17, 2024 at 11:15:49AM -0400, Paul Moore wrote:
> > Also good to know, thanks. However, at this point the lack of a clear
> > answer is making me wonder a bit more about inode numbers in the view
> > of VFS developers; do you folks care about inode numbers?
>
> The VFS itself does not care much about inode numbers. The Posix API
> does, although btrfs ignores that and seems to get away with that
> (mostly because applications put in btrfs-specific hacks).

Well, btrfs plays tricks with *device* numbers, right? Exactly so that
st_ino + st_dev actually stay unique for each file. Whether it matters for
audit I don't dare to say :). Bcachefs does not care and returns non-unique
inode numbers.

Honza
--
Jan Kara <jack@suse.com>
SUSE Labs, CR