diff --git a/acinclude.m4 b/acinclude.m4
index 9b29d30f89..a5fb5935d0 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -681,6 +681,9 @@ case $AFS_SYSNAME in *_linux* | *_umlinux*)
 		 if test "x$ac_cv_linux_fs_struct_inode_has_i_security" = "xyes"; then 
 		  AC_DEFINE(STRUCT_INODE_HAS_I_SECURITY, 1, [define if you struct inode has i_security])
 		 fi
+		 if test "x$ac_cv_linux_fs_struct_inode_has_i_sb_list" = "xyes"; then 
+		  AC_DEFINE(STRUCT_INODE_HAS_I_SB_LIST, 1, [define if you struct inode has i_sb_list])
+		 fi
 		 if test "x$ac_cv_linux_fs_struct_inode_has_i_dirty_data_buffers" = "xyes"; then 
 		  AC_DEFINE(STRUCT_INODE_HAS_I_DIRTY_DATA_BUFFERS, 1, [define if your struct inode has data_buffers])
 		 fi