config/kernel-lookup-bdev.m4

   1 dnl #
   2 dnl # 2.6.27 API change
   3 dnl # lookup_bdev() was exported.
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_LOOKUP_BDEV],
   6         [AC_MSG_CHECKING([whether lookup_bdev() is available])
   7         ZFS_LINUX_TRY_COMPILE_SYMBOL([
   8                 #include <linux/fs.h>
   9         ], [
  10                 lookup_bdev(NULL);
  11         ], [lookup_bdev], [fs/block_dev.c], [
  12                 AC_MSG_RESULT(yes)
  13                 AC_DEFINE(HAVE_LOOKUP_BDEV, 1, [lookup_bdev() is available])
  14         ], [
  15                 AC_MSG_RESULT(no)
  16         ])
  17 ])