Re: Pointer magic in mm_init_cpumask()

[Rik van Riel]

On Wed, 2019-08-21 at 09:13 -0400, Siarhei Liakh wrote:

> If mm_cpumask() is not safe, then at the very least the following has
> to be fixed:
> $ grep -rIn 'cpumask_clear(mm_cpumask(' *
> arch/powerpc/include/asm/tlb.h:69:    cpumask_clear(mm_cpumask(mm));
> arch/sparc/mm/init_64.c:857:        cpumask_clear(mm_cpumask(mm));
> arch/ia64/include/asm/mmu_context.h:92:        cpumask_clear(mm_cpuma
> sk(mm));
> arch/csky/mm/asid.c:126:    cpumask_clear(mm_cpumask(mm));
> arch/arm/mm/context.c:233:    cpumask_clear(mm_cpumask(mm));
> 
> Otherwise, mm_init_cpumask() can be simplified down to
> cpumask_clear(mm_cpumask(mm)).
> What do you think?

That looks like a nice cleanup.

I do not see why it would not work, but I suppose
that should be tested :)

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