config/kernel-blk-requeue-request.m4

   1 dnl #
   2 dnl # 2.6.31 API change
   3 dnl # Request queue peek/retrieval interface cleanup, the
   4 dnl # elv_requeue_request() function has been replaced with the
   5 dnl # blk_requeue_request() function.
   6 dnl #
   7 AC_DEFUN([ZFS_AC_KERNEL_BLK_REQUEUE_REQUEST], [
   8         AC_MSG_CHECKING([whether blk_requeue_request() is available])
   9         tmp_flags="$EXTRA_KCFLAGS"
  10         EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
  11         ZFS_LINUX_TRY_COMPILE([
  12                 #include <linux/blkdev.h>
  13         ],[
  14                 struct request_queue *q = NULL;
  15                 struct request *req = NULL;
  16                 blk_requeue_request(q, req);
  17         ],[
  18                 AC_MSG_RESULT(yes)
  19                 AC_DEFINE(HAVE_BLK_REQUEUE_REQUEST, 1,
  20                           [blk_requeue_request() is available])
  21         ],[
  22                 AC_MSG_RESULT(no)
  23         ])
  24         EXTRA_KCFLAGS="$tmp_flags"
  25 ])