diff options
Diffstat (limited to 'include/linux/bootmem_info.h')
| -rw-r--r-- | include/linux/bootmem_info.h | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/include/linux/bootmem_info.h b/include/linux/bootmem_info.h index 4ed6dee1adc9..2bc8b1f69c93 100644 --- a/include/linux/bootmem_info.h +++ b/include/linux/bootmem_info.h @@ -2,7 +2,7 @@ #ifndef __LINUX_BOOTMEM_INFO_H #define __LINUX_BOOTMEM_INFO_H -#include <linux/mmzone.h> +#include <linux/mm.h> /* * Types for free bootmem stored in page->lru.next. These have to be in @@ -22,6 +22,27 @@ void __init register_page_bootmem_info_node(struct pglist_data *pgdat); void get_page_bootmem(unsigned long info, struct page *page, unsigned long type); void put_page_bootmem(struct page *page); + +/* + * Any memory allocated via the memblock allocator and not via the + * buddy will be marked reserved already in the memmap. For those + * pages, we can call this function to free it to buddy allocator. + */ +static inline void free_bootmem_page(struct page *page) +{ + unsigned long magic = (unsigned long)page->freelist; + + /* + * The reserve_bootmem_region sets the reserved flag on bootmem + * pages. + */ + VM_BUG_ON_PAGE(page_ref_count(page) != 2, page); + + if (magic == SECTION_INFO || magic == MIX_SECTION_INFO) + put_page_bootmem(page); + else + VM_BUG_ON_PAGE(1, page); +} #else static inline void register_page_bootmem_info_node(struct pglist_data *pgdat) { @@ -35,6 +56,11 @@ static inline void get_page_bootmem(unsigned long info, struct page *page, unsigned long type) { } + +static inline void free_bootmem_page(struct page *page) +{ + free_reserved_page(page); +} #endif #endif /* __LINUX_BOOTMEM_INFO_H */ |