LU-12542 handle: move refcount into the lustre_handle.

[fs/lustre-release.git] / libcfs / autoconf / lustre-libcfs.m4

diff --git a/libcfs/autoconf/lustre-libcfs.m4 b/libcfs/autoconf/lustre-libcfs.m4
index f34af72..279be80 100644 (file)
--- a/libcfs/autoconf/lustre-libcfs.m4
+++ b/libcfs/autoconf/lustre-libcfs.m4
@@ -946,6 +946,16 @@ cpu_hotplug_state_machine, [
 ]) # LIBCFS_HOTPLUG_STATE_MACHINE
 
 #
+# Kernel version 4.10-rc3 commit f405df5de3170c00e5c54f8b7cf4766044a032ba
+# introduced refcount_t which is atomic_t plus over flow guards.
+#
+AC_DEFUN([LIBCFS_REFCOUNT_T], [
+LB_CHECK_LINUX_HEADER([linux/refcount.h], [
+       AC_DEFINE(HAVE_REFCOUNT_T, 1,
+               [refcount_t is supported])])
+]) # LIBCFS_REFCOUNT_T
+
+#
 # LIBCFS_SCHED_HEADERS
 #
 # 4.11 has broken up sched.h into more headers.
@@ -1345,6 +1355,7 @@ LIBCFS_GET_USER_PAGES_GUP_FLAGS
 LIBCFS_RHASHTABLE_WALK_ENTER
 # 4.10
 LIBCFS_HOTPLUG_STATE_MACHINE
+LIBCFS_REFCOUNT_T
 # 4.11
 LIBCFS_RHASHTABLE_LOOKUP_GET_INSERT_FAST
 LIBCFS_SCHED_HEADERS