1 files changed, 10 insertions, 0 deletions

diff --git a/fs/btrfs/sysfs.h b/fs/btrfs/sysfs.h
index 863e031ed1c1..d7c61bdf04ba 100644
--- a/fs/btrfs/sysfs.h
+++ b/fs/btrfs/sysfs.h
@@ -15,6 +15,13 @@ enum btrfs_feature_set {
         .store  = _store,                                               \
 }
 
+#define BTRFS_ATTR_RW(_name, _mode, _show, _store)                      \
+static struct kobj_attribute btrfs_attr_##_name =                       \
+                        __INIT_KOBJ_ATTR(_name, _mode, _show, _store)
+#define BTRFS_ATTR(_name, _mode, _show)                                 \
+        BTRFS_ATTR_RW(_name, _mode, _show, NULL)
+#define BTRFS_ATTR_PTR(_name)    (&btrfs_attr_##_name.attr)
+
 struct btrfs_feature_attr {
         struct kobj_attribute kobj_attr;
         enum btrfs_feature_set feature_set;
@@ -40,4 +47,7 @@ static struct btrfs_feature_attr btrfs_attr_##_name = {			     \
 /* convert from attribute */
 #define to_btrfs_feature_attr(a) \
                         container_of(a, struct btrfs_feature_attr, kobj_attr)
+#define attr_to_btrfs_attr(a) container_of(a, struct kobj_attribute, attr)
+#define attr_to_btrfs_feature_attr(a) \
+                        to_btrfs_feature_attr(attr_to_btrfs_attr(a))
 #endif /* _BTRFS_SYSFS_H_ */