config/kernel-bdi.m4

   1 dnl #
   2 dnl # 2.6.32 API change
   3 dnl # Private backing_device_info interfaces available
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_BDI], [
   6         AC_MSG_CHECKING([whether super_block has s_bdi])
   7         ZFS_LINUX_TRY_COMPILE([
   8                 #include <linux/fs.h>
   9         ],[
  10                 struct super_block sb __attribute__ ((unused));
  11                 sb.s_bdi = NULL;
  12         ],[
  13                 AC_MSG_RESULT(yes)
  14                 AC_DEFINE(HAVE_BDI, 1, [struct super_block has s_bdi])
  15         ],[
  16                 AC_MSG_RESULT(no)
  17         ])
  18 ])