mm/hotplug: invalid PFNs from pfn_to_online_page()

[mirror_ubuntu-bionic-kernel.git] / include / linux / sysfs.h

diff --git a/include/linux/sysfs.h b/include/linux/sysfs.h
index e32dfe098e822f559810d785a685e05054974cc0..cca19bb200bda055da1ae73e66d195debd570f66 100644 (file)
--- a/include/linux/sysfs.h
+++ b/include/linux/sysfs.h
@@ -117,6 +117,12 @@ struct attribute_group {
        .show   = _name##_show,                                         \
 }
 
+#define __ATTR_RO_MODE(_name, _mode) {                                 \
+       .attr   = { .name = __stringify(_name),                         \
+                   .mode = VERIFY_OCTAL_PERMISSIONS(_mode) },          \
+       .show   = _name##_show,                                         \
+}
+
 #define __ATTR_WO(_name) {                                             \
        .attr   = { .name = __stringify(_name), .mode = S_IWUSR },      \
        .store  = _name##_store,                                        \
@@ -233,6 +239,9 @@ int __must_check sysfs_create_files(struct kobject *kobj,
                                   const struct attribute **attr);
 int __must_check sysfs_chmod_file(struct kobject *kobj,
                                  const struct attribute *attr, umode_t mode);
+struct kernfs_node *sysfs_break_active_protection(struct kobject *kobj,
+                                                 const struct attribute *attr);
+void sysfs_unbreak_active_protection(struct kernfs_node *kn);
 void sysfs_remove_file_ns(struct kobject *kobj, const struct attribute *attr,
                          const void *ns);
 bool sysfs_remove_file_self(struct kobject *kobj, const struct attribute *attr);
@@ -346,6 +355,17 @@ static inline int sysfs_chmod_file(struct kobject *kobj,
        return 0;
 }
 
+static inline struct kernfs_node *
+sysfs_break_active_protection(struct kobject *kobj,
+                             const struct attribute *attr)
+{
+       return NULL;
+}
+
+static inline void sysfs_unbreak_active_protection(struct kernfs_node *kn)
+{
+}
+
 static inline void sysfs_remove_file_ns(struct kobject *kobj,
                                        const struct attribute *attr,
                                        const void *ns)