diff --git a/io/bits/statx-generic.h b/io/bits/statx-generic.h
index 19c3565edc..da199ddaa1 100644
--- a/io/bits/statx-generic.h
+++ b/io/bits/statx-generic.h
@@ -44,6 +44,7 @@
 # define STATX_DIOALIGN 0x2000U
 # define STATX_MNT_ID_UNIQUE 0x4000U
 # define STATX_SUBVOL 0x8000U
+# define STATX_WRITE_ATOMIC 0x00010000U
 # define STATX__RESERVED 0x80000000U
 
 # define STATX_ATTR_COMPRESSED 0x0004
@@ -55,6 +56,7 @@
 # define STATX_ATTR_MOUNT_ROOT 0x2000
 # define STATX_ATTR_VERITY 0x100000
 # define STATX_ATTR_DAX 0x200000
+# define STATX_ATTR_WRITE_ATOMIC 0x00400000
 #endif /* !STATX_TYPE */
 
 __BEGIN_DECLS