These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / include / linux / swapops.h

diff --git a/kernel/include/linux/swapops.h b/kernel/include/linux/swapops.h
index cedf3d3..5c3a5f3 100644 (file)
--- 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)