On Tue, Jul 13, 2021 at 01:32:42PM +0000, Al Viro wrote: > On Tue, Jul 13, 2021 at 01:13:21PM +0200, Christian Brauner wrote: > > From: Christian Brauner <christian.brauner@xxxxxxxxxx> > > > > Various filesystems use the lookup_one_len() helper to lookup a single path > > component relative to a well-known starting point. Allow such filesystems to > > support idmapped mounts by enabling lookup_one_len() to take the idmap into > > account when calling inode_permission(). This change is a required to let btrfs > > (and other filesystems) support idmapped mounts. > > NAK. Expose a new variant if you must, but leave the old one alone. Ok, happy to do that.
