LU-10565 osd: use readdir while iterate is kabi_extend

Sometime iterate interface is not initialized in ldiskfs.
So we use readdir in such case.

Signed-off-by: Yang Sheng <yang.sheng@intel.com>
Change-Id: I43260a6d27003895b0ddd1bdf7b0539cc2ad64c5
Reviewed-on: https://review.whamcloud.com/31018
Tested-by: Jenkins
Reviewed-by: Nathaniel Clark <nathaniel.l.clark@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>

diff --git a/lustre/autoconf/lustre-core.m4 b/lustre/autoconf/lustre-core.m4
index b8f4e45..6420f4a 100644 (file)
--- a/lustre/autoconf/lustre-core.m4
+++ b/lustre/autoconf/lustre-core.m4
@@ -1509,8 +1509,12 @@ LB_CHECK_COMPILE([if 'dir_context' exist],
 dir_context, [
        #include <linux/fs.h>
 ],[
+#ifdef FMODE_KABI_ITERATE
+#error "back to use readdir in kabi_extand mode"
+#else
        struct dir_context ctx;
        ctx.pos = 0;
+#endif
 ],[
        AC_DEFINE(HAVE_DIR_CONTEXT, 1,
                [dir_context exist])