On Mon, Sep 07, 2026 at 06:21:27PM +0200, David Hildenbrand (Arm) wrote: > On 9/2/26 20:00, Lorenzo Stoakes (ARM) wrote: > > To lay the foundation for a future change that converts > > MAP_PRIVATE-/dev/zero mappings to be truly anonymous, add the ability to > > uniquely identify these mappings. > > > > With the memory character device now part of mm/ this is trivially > > achievable through a file_is_dev_zero() predicate that simply tests that > > the file operation hooks are zero_fops. > > > > Also update userland VMA tests to expose file_is_dev_zero() and provide > > a stub zero_fops for testing. > > > > Signed-off-by: Lorenzo Stoakes (ARM) <[email protected]> > > --- > > yes! > > Acked-by: David Hildenbrand (Arm) <[email protected]>
I thought you might like these ;) Thanks for pushing back last cycle, this is MUCH better. Struck me that actually that it's trivial + requires no fugliness the second we have it mm/. > > -- > Cheers, > > David -- Cheers, Lorenzo
