From a27741493db0d824a51775e387cf3972a471f64e Mon Sep 17 00:00:00 2001
From: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
Date: Mon, 24 Sep 2018 18:28:53 +0200
Subject: Add compatibility to support kvcalloc()

---
 configure.ac | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 73a2f8c..2df76b2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -383,6 +383,16 @@ else
 	AC_SUBST(HAVE_RBTREE_POSTORDER_FOR_EACH_ENTRY_SAFE, undef)
 fi
 
+AC_MSG_CHECKING([kernel source for kvcalloc])
+if test -f $ksourcedir/include/linux/mm.h && \
+   $GREP -q 'kvcalloc' $ksourcedir/include/linux/mm.h; then
+	AC_MSG_RESULT(yes)
+	AC_SUBST(HAVE_KVCALLOC, define)
+else
+	AC_MSG_RESULT(no)
+	AC_SUBST(HAVE_KVCALLOC, undef)
+fi
+
 AC_MSG_CHECKING([kernel source for kvfree])
 if test -f $ksourcedir/include/linux/mm.h && \
    $GREP -q 'kvfree' $ksourcedir/include/linux/mm.h; then
-- 
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