zfs/config/kernel-blkdev-get.m4

   1 dnl #
   2 dnl # 2.6.37 API change
   3 dnl # Added 3rd argument for the active holder, previously this was
   4 dnl # hardcoded to NULL.
   5 dnl #
   6 AC_DEFUN([ZFS_AC_KERNEL_3ARG_BLKDEV_GET], [
   7         AC_MSG_CHECKING([whether blkdev_get() wants 3 args])
   8         ZFS_LINUX_TRY_COMPILE([
   9                 #include <linux/fs.h>
  10         ],[
  11                 struct block_device *bdev = NULL;
  12                 (void) blkdev_get(bdev, 0, NULL);
  13         ],[
  14                 AC_MSG_RESULT(yes)
  15                 AC_DEFINE(HAVE_3ARG_BLKDEV_GET, 1, [blkdev_get() wants 3 args])
  16         ],[
  17                 AC_MSG_RESULT(no)
  18         ])
  19 ])