config/kernel-truncate-setsize.m4

   1 dnl #
   2 dnl # 2.6.35 API change
   3 dnl # Added truncate_setsize() helper function.
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_TRUNCATE_SETSIZE],
   6         [AC_MSG_CHECKING([whether truncate_setsize() is available])
   7         ZFS_LINUX_TRY_COMPILE_SYMBOL([
   8                 #include <linux/mm.h>
   9         ], [
  10                 truncate_setsize(NULL, 0);
  11         ], [truncate_setsize], [mm/truncate.c], [
  12                 AC_MSG_RESULT(yes)
  13                 AC_DEFINE(HAVE_TRUNCATE_SETSIZE, 1,
  14                           [truncate_setsize() is available])
  15         ], [
  16                 AC_MSG_RESULT(no)
  17         ])
  18 ])