diff options
Diffstat (limited to 'include/linux/pageblock-flags.h')
| -rw-r--r-- | include/linux/pageblock-flags.h | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/include/linux/pageblock-flags.h b/include/linux/pageblock-flags.h index 5456da6b4ade..9ea130829fb4 100644 --- a/include/linux/pageblock-flags.h +++ b/include/linux/pageblock-flags.h @@ -1,6 +1,6 @@ /* * Macros for manipulating and testing flags related to a - * MAX_ORDER_NR_PAGES block of pages. + * pageblock_nr_pages number of pages. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -35,6 +35,29 @@ enum pageblock_bits { NR_PAGEBLOCK_BITS }; +#ifdef CONFIG_HUGETLB_PAGE + +#ifdef CONFIG_HUGETLB_PAGE_SIZE_VARIABLE + +/* Huge page sizes are variable */ +extern int pageblock_order; + +#else /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */ + +/* Huge pages are a constant size */ +#define pageblock_order HUGETLB_PAGE_ORDER + +#endif /* CONFIG_HUGETLB_PAGE_SIZE_VARIABLE */ + +#else /* CONFIG_HUGETLB_PAGE */ + +/* If huge pages are not used, group by MAX_ORDER_NR_PAGES */ +#define pageblock_order (MAX_ORDER-1) + +#endif /* CONFIG_HUGETLB_PAGE */ + +#define pageblock_nr_pages (1UL << pageblock_order) + /* Forward declaration */ struct page; |