diff options
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 26c7124b841..b695875d63e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -235,12 +235,21 @@ static inline int get_page_unless_zero(struct page *page) struct page *vmalloc_to_page(const void *addr); unsigned long vmalloc_to_pfn(const void *addr); -/* Determine if an address is within the vmalloc range */ +/* + * Determine if an address is within the vmalloc range + * + * On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there + * is no special casing required. + */ static inline int is_vmalloc_addr(const void *x) { +#ifdef CONFIG_MMU unsigned long addr = (unsigned long)x; return addr >= VMALLOC_START && addr < VMALLOC_END; +#else + return 0; +#endif } static inline struct page *compound_head(struct page *page) @@ -1171,12 +1180,18 @@ static inline void enable_debug_pagealloc(void) { debug_pagealloc_enabled = 1; } +#ifdef CONFIG_HIBERNATION +extern bool kernel_page_present(struct page *page); +#endif /* CONFIG_HIBERNATION */ #else static inline void kernel_map_pages(struct page *page, int numpages, int enable) {} static inline void enable_debug_pagealloc(void) { } +#ifdef CONFIG_HIBERNATION +static inline bool kernel_page_present(struct page *page) { return true; } +#endif /* CONFIG_HIBERNATION */ #endif extern struct vm_area_struct *get_gate_vma(struct task_struct *tsk); |