diff options
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 48 |
1 files changed, 39 insertions, 9 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 652e73967707..d2dcc8727bc8 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -29,6 +29,7 @@ struct file_ra_state; struct user_struct; struct writeback_control; struct bdi_writeback; +struct super_block; #ifndef CONFIG_NEED_MULTIPLE_NODES /* Don't use mapnrs, do it properly */ extern unsigned long max_mapnr; @@ -389,16 +390,16 @@ unsigned long vmalloc_to_pfn(const void *addr); * 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; +#ifdef CONFIG_MMU +extern int is_vmalloc_addr(const void *x); #else +static inline int is_vmalloc_addr(const void *x) +{ return 0; -#endif } +#endif + #ifdef CONFIG_MMU extern int is_vmalloc_or_module_addr(const void *x); #else @@ -532,7 +533,6 @@ void put_page(struct page *page); void put_pages_list(struct list_head *pages); void split_page(struct page *page, unsigned int order); -int split_free_page(struct page *page); /* * Compound pages have a destructor function. Provide a @@ -998,6 +998,7 @@ static inline int page_mapped(struct page *page) { return atomic_read(&(page)->_mapcount) >= 0; } +struct address_space *page_mapping(struct page *page); /* * Return true only if the page has been allocated with @@ -1967,8 +1968,11 @@ vm_unmapped_area(struct vm_unmapped_area_info *info) /* truncate.c */ extern void truncate_inode_pages(struct address_space *, loff_t); +extern void truncate_inode_pages_fill_zero(struct address_space *, loff_t); extern void truncate_inode_pages_range(struct address_space *, loff_t lstart, loff_t lend); +extern void truncate_inode_pages_range_fill_zero(struct address_space *, + loff_t lstart, loff_t lend); extern void truncate_inode_pages_final(struct address_space *); /* generic vm_area_ops exported for stackable file systems */ @@ -1981,7 +1985,7 @@ int write_one_page(struct page *page, int wait); void task_dirty_inc(struct task_struct *tsk); /* readahead.c */ -#define VM_MAX_READAHEAD 128 /* kbytes */ +#define VM_MAX_READAHEAD 512 /* kbytes */ #define VM_MIN_READAHEAD 16 /* kbytes (includes current page) */ int force_page_cache_readahead(struct address_space *mapping, struct file *filp, @@ -2142,6 +2146,17 @@ static inline void vm_stat_account(struct mm_struct *mm, } #endif /* CONFIG_PROC_FS */ +#ifdef CONFIG_PAGE_POISONING +extern bool page_poisoning_enabled(void); +extern void kernel_poison_pages(struct page *page, int numpages, int enable); +extern bool page_is_poisoned(struct page *page); +#else +static inline bool page_poisoning_enabled(void) { return false; } +static inline void kernel_poison_pages(struct page *page, int numpages, + int enable) { } +static inline bool page_is_poisoned(struct page *page) { return false; } +#endif + #ifdef CONFIG_DEBUG_PAGEALLOC extern bool _debug_pagealloc_enabled; extern void __kernel_map_pages(struct page *page, int numpages, int enable); @@ -2199,6 +2214,8 @@ int drop_caches_sysctl_handler(struct ctl_table *, int, void drop_slab(void); void drop_slab_node(int nid); +void drop_pagecache_sb(struct super_block *sb, void *unused); + #ifndef CONFIG_MMU #define randomize_va_space 0 #else @@ -2293,7 +2310,6 @@ extern void copy_user_huge_page(struct page *dst, struct page *src, #endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_HUGETLBFS */ extern struct page_ext_operations debug_guardpage_ops; -extern struct page_ext_operations page_poisoning_ops; #ifdef CONFIG_DEBUG_PAGEALLOC extern unsigned int _debug_guardpage_minorder; @@ -2331,5 +2347,19 @@ void __init setup_nr_node_ids(void); static inline void setup_nr_node_ids(void) {} #endif +#ifdef CONFIG_PROCESS_RECLAIM +struct reclaim_param { + struct vm_area_struct *vma; + /* Number of pages scanned */ + int nr_scanned; + /* max pages to reclaim */ + int nr_to_reclaim; + /* pages reclaimed */ + int nr_reclaimed; +}; +extern struct reclaim_param reclaim_task_anon(struct task_struct *task, + int nr_to_reclaim); +#endif + #endif /* __KERNEL__ */ #endif /* _LINUX_MM_H */ |