[PATCH v5 18/42] stat: handle idmapped mounts

[Christoph Hellwig]

On Tue, Jan 12, 2021 at 11:01:00PM +0100, Christian Brauner wrote:
> The generic_fillattr() helper fills in the basic attributes associated
> with an inode. Enable it to handle idmapped mounts. If the inode is
> accessed through an idmapped mount we need to map it according to the
> mount's user namespace before we store the uid and gid.
> If the initial user namespace is passed nothing changes so non-idmapped
> mounts will see identical behavior as before.

Looks good,

Reviewed-by: Christoph Hellwig <hch at lst.de>