On Fri, Jul 19, 2024 at 07:43:38PM +1200, Barry Song wrote: > I doubt this is going to work as users can use a variant to save gfp_flags. > On the other hand, isn't it necessarily a bug of vdpa, why can't it be mm? > > if mm disallows GFP_NOFAIL, there must be a doc to say that; if it allows, > we should never return NULL. Yeah. Maybe the right answer is to have separate _nofail variants that don't take any flags and make GFP_NOFAIL an entirely mm-private internal flags that is rejected by all external interfaces. That should also really help with auditing the users.
