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-rw-r--r--include/linux/mm.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 186d2ab9cd13..8e4e3debce84 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2146,6 +2146,15 @@ 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);
+#else
+static inline bool page_poisoning_enabled(void) { return false; }
+static inline void kernel_poison_pages(struct page *page, int numpages,
+ int enable) { }
+#endif
+
#ifdef CONFIG_DEBUG_PAGEALLOC
extern bool _debug_pagealloc_enabled;
extern void __kernel_map_pages(struct page *page, int numpages, int enable);