Eliminate runtime function pointer mods in autotools checks

[zfs.git] / config / kernel-mkdir-umode-t.m4

diff --git a/config/kernel-mkdir-umode-t.m4 b/config/kernel-mkdir-umode-t.m4
index dd5d94b..634260b 100644 (file)
--- a/config/kernel-mkdir-umode-t.m4
+++ b/config/kernel-mkdir-umode-t.m4
@@ -10,12 +10,16 @@ AC_DEFUN([ZFS_AC_KERNEL_MKDIR_UMODE_T], [
        AC_MSG_CHECKING([whether iops->create()/mkdir()/mknod() take umode_t])
        ZFS_LINUX_TRY_COMPILE([
                #include <linux/fs.h>
-       ],[
-               int (*mkdir) (struct inode *,struct dentry *,umode_t) = NULL;
-               struct inode_operations iops __attribute__ ((unused)) = {
+
+               int mkdir(struct inode *inode, struct dentry *dentry,
+                   umode_t umode) { return 0; }
+
+               static const struct inode_operations
+                   iops __attribute__ ((unused)) = {
                        .mkdir = mkdir,
                };
        ],[
+       ],[
                AC_MSG_RESULT(yes)
                AC_DEFINE(HAVE_MKDIR_UMODE_T, 1,
                    [iops->create()/mkdir()/mknod() take umode_t])