Messages in this thread | | | Date | Fri, 14 Aug 2020 08:26:23 -0700 | From | "Paul E. McKenney" <> | Subject | Re: [RFC-PATCH 1/2] mm: Add __GFP_NO_LOCKS flag |
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On Fri, Aug 14, 2020 at 12:23:06PM +0200, peterz@infradead.org wrote: > 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.
The problem with that is common code along with the tendency of people to just use the one that "works everywhere".
Thanx, Paul
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