diff --git a/fs/userfaultfd.c b/fs/userfaultfd.c
index 9bc256d1a143bab6383fb44d43e5843e5011cd29..0756d97b0666940ac96db0a9cbb8f9ba918cb979 100644
--- a/fs/userfaultfd.c
+++ b/fs/userfaultfd.c
@@ -884,7 +884,7 @@ static int userfaultfd_api(struct userfaultfd_ctx *ctx,
 		goto out;
 	}
 	/* careful not to leak info, we only read the first 8 bytes */
-	uffdio_api.bits = UFFD_API_BITS;
+	uffdio_api.features = UFFD_API_FEATURES;
 	uffdio_api.ioctls = UFFD_API_IOCTLS;
 	ret = -EFAULT;
 	if (copy_to_user(buf, &uffdio_api, sizeof(uffdio_api)))
@@ -941,7 +941,7 @@ static void userfaultfd_show_fdinfo(struct seq_file *m, struct file *f)
 	 *	protocols: aa:... bb:...
 	 */
 	seq_printf(m, "pending:\t%lu\ntotal:\t%lu\nAPI:\t%Lx:%x:%Lx\n",
-		   pending, total, UFFD_API, UFFD_API_BITS,
+		   pending, total, UFFD_API, UFFD_API_FEATURES,
 		   UFFD_API_IOCTLS|UFFD_API_RANGE_IOCTLS);
 }
 #endif
diff --git a/include/uapi/linux/userfaultfd.h b/include/uapi/linux/userfaultfd.h
index 09c2e2a8c9d650df6f9ce68c70d82165f5892eee..330206016249c541db4b90c6b1d6591166324e44 100644
--- a/include/uapi/linux/userfaultfd.h
+++ b/include/uapi/linux/userfaultfd.h
@@ -12,8 +12,8 @@
 #include <linux/types.h>
 
 #define UFFD_API ((__u64)0xAA)
-/* FIXME: add "|UFFD_BIT_WP" to UFFD_API_BITS after implementing it */
-#define UFFD_API_BITS (UFFD_BIT_WRITE)
+/* FIXME: add "|UFFD_FEATURE_WP" to UFFD_API_FEATURES after implementing it */
+#define UFFD_API_FEATURES (UFFD_FEATURE_WRITE_BIT)
 #define UFFD_API_IOCTLS				\
 	((__u64)1 << _UFFDIO_REGISTER |		\
 	 (__u64)1 << _UFFDIO_UNREGISTER |	\
@@ -53,12 +53,18 @@
 #define UFFD_BIT_WP	(1<<1)	/* handle_userfault() reason VM_UFFD_WP */
 #define UFFD_BITS	2	/* two above bits used for UFFD_BIT_* mask */
 
+/*
+ * Features reported in uffdio_api.features field
+ */
+#define UFFD_FEATURE_WRITE_BIT	(1<<0) /* Corresponds to UFFD_BIT_WRITE */
+#define UFFD_FEATURE_WP_BIT	(1<<1) /* Corresponds to UFFD_BIT_WP */
+
 struct uffdio_api {
 	/* userland asks for an API number */
 	__u64 api;
 
 	/* kernel answers below with the available features for the API */
-	__u64 bits;
+	__u64 features;
 	__u64 ioctls;
 };