LU-14195 libcfs: switch to kfree_sensitive

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

diff --git a/libcfs/autoconf/lustre-libcfs.m4 b/libcfs/autoconf/lustre-libcfs.m4
index d3dcc6c..a4abdd2 100644 (file)
--- a/libcfs/autoconf/lustre-libcfs.m4
+++ b/libcfs/autoconf/lustre-libcfs.m4
@@ -1378,6 +1378,26 @@ kernel_setsockopt_exists, [
 EXTRA_KCFLAGS="$tmp_flags"
 ]) # LIBCFS_KERNEL_SETSOCKOPT
 
+#
+# LIBCFS_HAVE_KFREE_SENSITIVE
+#
+# kernel v5.10-rc1~3
+# mm: remove kzfree() compatibility definition
+#
+AC_DEFUN([LIBCFS_HAVE_KFREE_SENSITIVE], [
+LB_CHECK_COMPILE([if kfree_sensitive() is available],
+kfree_sensitive_exists, [
+       #include <linux/slab.h>
+
+],[
+       kfree_sensitive(NULL);
+],[
+       AC_DEFINE(HAVE_KFREE_SENSITIVE, 1,
+               [kfree_sensitive() is available.])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LIBCFS_HAVE_NR_UNSTABLE_NFS
+
 AC_DEFUN([LIBCFS_PROG_LINUX_SRC], [] )
 AC_DEFUN([LIBCFS_PROG_LINUX_RESULTS], [])
 
@@ -1492,6 +1512,8 @@ LIBCFS_KALLSYMS_LOOKUP
 LIBCFS_HAVE_MMAP_LOCK
 LIBCFS_KERNEL_SETSOCKOPT
 LIBCFS_VMALLOC_2ARGS
+# 5.10
+LIBCFS_HAVE_KFREE_SENSITIVE
 ]) # LIBCFS_PROG_LINUX
 
 #