Dave Hansen wrote:
> On 05/11/2013 06:23 PM, Kirill A. Shutemov wrote:
> > +static inline unsigned long mapping_align_mask(struct address_space *mapping)
> > +{
> > + if (mapping_can_have_hugepages(mapping))
> > + return PAGE_MASK & ~HPAGE_MASK;
> > + return get_align_mask();
> > +}
>
> get_align_mask() appears to be a bit more complicated to me than just a
> plain old mask. Are you sure you don't need to pick up any of its
> behavior for the mapping_can_have_hugepages() case?
get_align_mask() never returns more strict mask then we do in
mapping_can_have_hugepages() case.
I can modify it this way:
unsigned long mask = get_align_mask();
if (mapping_can_have_hugepages(mapping))
mask &= PAGE_MASK & ~HPAGE_MASK;
return mask;
But it looks more confusing for me. What do you think?
--
Kirill A. Shutemov
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