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SubjectRe: [RFC][PATCH 02/10] mm: Remove likely() from mapping_unevictable()
Joe Perches <> writes:
> It'd be better to use
> if (!mapping)
> return 0;
> return test_bit(AS_UNEVICTABLE, &mapping->flags);
> to avoid the unnecessary !!

How about

return mapping && test_bit(AS_UNEVICTABLE, &mapping->flags);



Yossarian was moved very deeply by the absolute simplicity of
this clause of Catch-22 and let out a respectful whistle.
"That's some catch, that Catch-22," he observed.
"It's the best there is," Doc Daneeka agreed.

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