3 dnl # struct user_namespace was added to struct super_block as
4 dnl # super->s_user_ns member
6 AC_DEFUN([ZFS_AC_KERNEL_SUPER_USER_NS], [
7 AC_MSG_CHECKING([whether super_block->s_user_ns exists])
8 ZFS_LINUX_TRY_COMPILE([
10 #include <linux/user_namespace.h>
12 struct super_block super;
13 super.s_user_ns = (struct user_namespace *)NULL;
16 AC_DEFINE(HAVE_SUPER_USER_NS, 1,
17 [super_block->s_user_ns exists])