Re: [PATCH] uuid: Add helpers for finding UUID from an array

[Christoph Hellwig]

On Tue, Aug 27, 2019 at 02:49:18PM +0300, Heikki Krogerus wrote:
> Matching function that compares every UUID in an array to a
> given UUID with guid_equal().
> 
> Signed-off-by: Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>
> ---
> Hi,
> 
> I don't have a user for these helpers, but since they are pretty
> trivial, I figured that might as well propose them in any case.
> Though, I think there was somebody proposing of doing the same thing
> that these helpers do at one point, but just the hard way in the
> drivers, right Andy?

XFS has something similar in xfs_uuid_mount, except that it also
tracks empty slots.  That beeing said I'm pretty sure if you ask willy
he's suggest to just convert the table to an xarray instead :)

So I'm defintively curious what the users would be where we just check
a table, but don't also add something to the table.