Ok, I've applied the patch.
Mel, some grepping shows that there is an old line that does
end_pfn = ALIGN(low_pfn + pageblock_nr_pages, pageblock_nr_pages);
which looks bogus. That should probably also use "+ 1" instead. But
I'll consider that an independent issue, so I applied the one patch
regardless.
There is also a
low_pfn += pageblock_nr_pages;
low_pfn = ALIGN(low_pfn, pageblock_nr_pages) - 1;
that looks suspicious for similar reasons. Maybe
low_pfn = ALIGN(low_pfn + 1, pageblock_nr_pages) - 1;
instead? Although that *can* result in the same low_pfn in the end, so
maybe that one was correct after all? I just did some grepping, no
actual semantic analysis...
Linus
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