Re: [PATCH v3 2/5] ovl: allocate a container struct ovl_file for ovl private context

[Al Viro <viro@xxxxxxxxxxxxxxxxxx>]

On Mon, Oct 07, 2024 at 04:19:22PM +0200, Amir Goldstein wrote:
> Instead of using ->private_data to point at realfile directly, so
> that we can add more context per ovl open file.

Hmm...  That'll cost you an extra deref to get to underlying file.
Cache footprint might get unpleasant...