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dnl #
dnl # 2.6.32 API change
dnl # Private backing_device_info interfaces available
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BDI], [
AC_MSG_CHECKING([whether super_block has s_bdi])
ZFS_LINUX_TRY_COMPILE([
#include <linux/fs.h>
],[
struct super_block sb __attribute__ ((unused));
sb.s_bdi = NULL;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BDI, 1, [struct super_block has s_bdi])
],[
AC_MSG_RESULT(no)
])
])
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