diff options
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 33 |
1 files changed, 27 insertions, 6 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 3ea86204a32b..97b11c9fd48a 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; @@ -385,16 +386,16 @@ 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 @@ -1990,8 +1991,11 @@ 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 */ @@ -2123,6 +2127,7 @@ static inline struct page *follow_page(struct vm_area_struct *vma, #define FOLL_MIGRATION 0x400 /* wait for page to replace migration entry */ #define FOLL_TRIED 0x800 /* a retry, previous pass started an IO */ #define FOLL_MLOCK 0x1000 /* lock present pages */ +#define FOLL_COW 0x4000 /* internal GUP flag */ typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, void *data); @@ -2192,6 +2197,8 @@ 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 @@ -2324,5 +2331,19 @@ 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 */ |