config/kernel-block-device-operations-release-void.m4

   1 dnl #
   2 dnl # 3.10.x API change
   3 dnl #
   4 AC_DEFUN([ZFS_AC_KERNEL_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID], [
   5         AC_MSG_CHECKING([whether block_device_operations.release is void])
   6         tmp_flags="$EXTRA_KCFLAGS"
   7         EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
   8         ZFS_LINUX_TRY_COMPILE([
   9                 #include <linux/blkdev.h>
  10
  11                 void blk_release(struct gendisk *g, fmode_t mode) { return; }
  12
  13                 static const struct block_device_operations
  14                     bops __attribute__ ((unused)) = {
  15                         .open           = NULL,
  16                         .release        = blk_release,
  17                         .ioctl          = NULL,
  18                         .compat_ioctl   = NULL,
  19                 };
  20         ],[
  21         ],[
  22                 AC_MSG_RESULT(void)
  23                 AC_DEFINE(HAVE_BLOCK_DEVICE_OPERATIONS_RELEASE_VOID, 1,
  24                           [struct block_device_operations.release returns void])
  25         ],[
  26                 AC_MSG_RESULT(int)
  27         ])
  28         EXTRA_KCFLAGS="$tmp_flags"
  29 ])