config/kernel-super-userns.m4

   1 dnl #
   2 dnl # 4.8 API change
   3 dnl # struct user_namespace was added to struct super_block as
   4 dnl # super->s_user_ns member
   5 dnl #
   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([
   9                 #include <linux/fs.h>
  10                 #include <linux/user_namespace.h>
  11         ],[
  12                 struct super_block super;
  13                 super.s_user_ns = (struct user_namespace *)NULL;
  14         ],[
  15                 AC_MSG_RESULT(yes)
  16                 AC_DEFINE(HAVE_SUPER_USER_NS, 1,
  17                     [super_block->s_user_ns exists])
  18         ],[
  19                 AC_MSG_RESULT(no)
  20         ])
  21 ])