rdma.m4: Added macro for default_groups in configfs

Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.com>

diff --git a/config/rdma.m4 b/config/rdma.m4
index 036e1ca45fe870ebd334378cd5f88b97a810d476..cc104499bceafa4308149990976f91a8ff31139f 100644 (file)
--- a/config/rdma.m4
+++ b/config/rdma.m4
@@ -3435,6 +3435,23 @@ AC_DEFUN([LINUX_CONFIG_COMPAT],
                        [pat_enabled is exported by the kernel])],
        [])
 
+       AC_MSG_CHECKING([if configfs.h default_groups is list_head])
+       LB_LINUX_TRY_COMPILE([
+               #include <linux/configfs.h>
+       ],[
+               struct config_group x = {
+                       .group_entry = NULL,
+               };
+
+               return 0;
+       ],[
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_CONFIGFS_DEFAULT_GROUPS_LIST, 1,
+                         [default_groups is list_head])
+       ],[
+               AC_MSG_RESULT(no)
+       ])
+
 ])
 #
 # COMPAT_CONFIG_HEADERS