config/kernel-open-bdev-exclusive.m4

   1 dnl #
   2 dnl # 2.6.28 API change
   3 dnl # open/close_bdev_excl() renamed to open/close_bdev_exclusive()
   4 dnl #
   5 AC_DEFUN([ZFS_AC_KERNEL_OPEN_BDEV_EXCLUSIVE],
   6         [AC_MSG_CHECKING([whether open_bdev_exclusive() is available])
   7         ZFS_LINUX_TRY_COMPILE_SYMBOL([
   8                 #include <linux/fs.h>
   9         ], [
  10                 open_bdev_exclusive(NULL, 0, NULL);
  11         ], [open_bdev_exclusive], [fs/block_dev.c], [
  12                 AC_MSG_RESULT(yes)
  13                 AC_DEFINE(HAVE_OPEN_BDEV_EXCLUSIVE, 1,
  14                           [open_bdev_exclusive() is available])
  15         ], [
  16                 AC_MSG_RESULT(no)
  17         ])
  18 ])