On Tue, Jan 12, 2021 at 11:00:57PM +0100, Christian Brauner wrote: > Add a simple helper to retrieve the user namespace associated with the > vfsmount of a file. Christoph correctly points out that this makes > codepaths (e.g. ioctls) way easier to follow that would otherwise > dereference via mnt_user_ns(file->f_path.mnt). > > In order to make file_user_ns() static inline we'd need to include > mount.h in either file.h or fs.h which seems undesirable so let's simply > not force file_user_ns() to be inline. I'd be tempted to just make this an inline. Otherwise this looks ok: Reviewed-by: Christoph Hellwig <hch@xxxxxx>
