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-rw-r--r--kernel/include/linux/swapops.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/kernel/include/linux/swapops.h b/kernel/include/linux/swapops.h
index cedf3d3c3..5c3a5f3e7 100644
--- a/kernel/include/linux/swapops.h
+++ b/kernel/include/linux/swapops.h
@@ -164,6 +164,9 @@ static inline int is_write_migration_entry(swp_entry_t entry)
#endif
#ifdef CONFIG_MEMORY_FAILURE
+
+extern atomic_long_t num_poisoned_pages __read_mostly;
+
/*
* Support for hardware poisoned pages
*/
@@ -177,6 +180,31 @@ static inline int is_hwpoison_entry(swp_entry_t entry)
{
return swp_type(entry) == SWP_HWPOISON;
}
+
+static inline bool test_set_page_hwpoison(struct page *page)
+{
+ return TestSetPageHWPoison(page);
+}
+
+static inline void num_poisoned_pages_inc(void)
+{
+ atomic_long_inc(&num_poisoned_pages);
+}
+
+static inline void num_poisoned_pages_dec(void)
+{
+ atomic_long_dec(&num_poisoned_pages);
+}
+
+static inline void num_poisoned_pages_add(long num)
+{
+ atomic_long_add(num, &num_poisoned_pages);
+}
+
+static inline void num_poisoned_pages_sub(long num)
+{
+ atomic_long_sub(num, &num_poisoned_pages);
+}
#else
static inline swp_entry_t make_hwpoison_entry(struct page *page)
@@ -188,6 +216,15 @@ static inline int is_hwpoison_entry(swp_entry_t swp)
{
return 0;
}
+
+static inline bool test_set_page_hwpoison(struct page *page)
+{
+ return false;
+}
+
+static inline void num_poisoned_pages_inc(void)
+{
+}
#endif
#if defined(CONFIG_MEMORY_FAILURE) || defined(CONFIG_MIGRATION)