diff options
| -rw-r--r-- | include/linux/mm.h | 7 | ||||
| -rw-r--r-- | mm/page_alloc.c | 9 |
2 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index d064c73c925e..43b70d5f8201 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1303,6 +1303,13 @@ extern void free_initmem(void); */ extern unsigned long free_reserved_area(unsigned long start, unsigned long end, int poison, char *s); +#ifdef CONFIG_HIGHMEM +/* + * Free a highmem page into the buddy system, adjusting totalhigh_pages + * and totalram_pages. + */ +extern void free_highmem_page(struct page *page); +#endif static inline void adjust_managed_page_count(struct page *page, long count) { diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 5c660f5ba3d3..72da11c6804d 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -5141,6 +5141,15 @@ unsigned long free_reserved_area(unsigned long start, unsigned long end, return pages; } +#ifdef CONFIG_HIGHMEM +void free_highmem_page(struct page *page) +{ + __free_reserved_page(page); + totalram_pages++; + totalhigh_pages++; +} +#endif + /** * set_dma_reserve - set the specified number of pages reserved in the first zone * @new_dma_reserve: The number of pages to mark reserved |