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dnl #
dnl # 4.8 API change
dnl # struct user_namespace was added to struct super_block as
dnl # super->s_user_ns member
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SUPER_USER_NS], [
AC_MSG_CHECKING([whether super_block->s_user_ns exists])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
#include <linux/user_namespace.h>
],[
struct super_block super;
super.s_user_ns = (struct user_namespace *)NULL;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_SUPER_USER_NS, 1,
[super_block->s_user_ns exists])
],[
AC_MSG_RESULT(no)
])
])
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