Re: [RFC-PATCH 1/2] mm: Add __GFP_NO_LOCKS flag

peterz
2020-08-14T10:23:22Z

On Fri, Aug 14, 2020 at 10:30:37AM +0200, Peter Zijlstra wrote:
> > > 1. Prohibit invoking allocators from raw atomic context, such
> > > as when holding a raw spinlock.
> >
> > Clearly the simplest solution but not Pauls favourite and
> > unfortunately he has a good reason.
>
> Which isn't actually stated anywhere I suppose ?

Introduce raw_kfree_rcu() that doesn't do the allocation, and fix the
few wonky callsites.