diff options
Diffstat (limited to 'include/linux/page-flags.h')
| -rw-r--r-- | include/linux/page-flags.h | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index d66971530caa..00e55e23b777 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -6,7 +6,10 @@ #define PAGE_FLAGS_H #include <linux/types.h> +#ifndef __GENERATING_BOUNDS_H #include <linux/mm_types.h> +#include <linux/bounds.h> +#endif /* !__GENERATING_BOUNDS_H */ /* * Various page->flags bits: @@ -59,13 +62,12 @@ * extends from the high bits downwards. * * | FIELD | ... | FLAGS | - * N-1 ^ 0 - * (N-FLAGS_RESERVED) + * N-1 ^ 0 + * (NR_PAGEFLAGS) * - * The fields area is reserved for fields mapping zone, node and SPARSEMEM - * section. The boundry between these two areas is defined by - * FLAGS_RESERVED which defines the width of the fields section - * (see linux/mmzone.h). New flags must _not_ overlap with this area. + * The fields area is reserved for fields mapping zone, node (for NUMA) and + * SPARSEMEM section (for variants of SPARSEMEM that require section ids like + * SPARSEMEM_EXTREME with !SPARSEMEM_VMEMMAP). */ enum pageflags { PG_locked, /* Page is locked. Don't touch. */ @@ -101,9 +103,11 @@ enum pageflags { */ PG_uncached = 31, /* Page has been mapped as uncached */ #endif - NR_PAGEFLAGS + __NR_PAGEFLAGS }; +#ifndef __GENERATING_BOUNDS_H + /* * Manipulation of page state flags */ @@ -304,4 +308,5 @@ static inline void set_page_writeback(struct page *page) test_set_page_writeback(page); } +#endif /* !__GENERATING_BOUNDS_H */ #endif /* PAGE_FLAGS_H */ |