On Tue, Jun 28, 2022 at 02:32:05PM +0200, Christian Brauner wrote: > On Wed, Jun 22, 2022 at 05:15:16AM +0100, Al Viro wrote: > > we can do copyin/copyout under kmap_local_page(); it shouldn't overflow > > the kmap stack - the maximal footprint increase only by one here. > > > > Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx> > > --- > > Assuming the WARN_ON(1) removals are intentional, > Reviewed-by: Christian Brauner (Microsoft) <brauner@xxxxxxxxxx> Deliberate - it shouldn't be any different from what _copy_to_iter() and _copy_from_iter() are ready to handle.
