config/kernel-d-obtain-alias.m4

   1 dnl #
   2 dnl # 2.6.28 API change
   3 dnl # Added d_obtain_alias() helper function.
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_D_OBTAIN_ALIAS],
   6         [AC_MSG_CHECKING([whether d_obtain_alias() is available])
   7         ZFS_LINUX_TRY_COMPILE_SYMBOL([
   8                 #include <linux/dcache.h>
   9         ], [
  10                 d_obtain_alias(NULL);
  11         ], [d_obtain_alias], [fs/dcache.c], [
  12                 AC_MSG_RESULT(yes)
  13                 AC_DEFINE(HAVE_D_OBTAIN_ALIAS, 1,
  14                           [d_obtain_alias() is available])
  15         ], [
  16                 AC_MSG_RESULT(no)
  17         ])
  18 ])