2 dnl # 2.6.32 - 2.6.33, bdi_setup_and_register() is not exported.
3 dnl # 2.6.34 - 3.19, bdi_setup_and_register() takes 3 arguments.
4 dnl # 4.0 - x.y, bdi_setup_and_register() takes 2 arguments.
6 AC_DEFUN([ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER], [
7 AC_MSG_CHECKING([whether bdi_setup_and_register() wants 2 args])
8 ZFS_LINUX_TRY_COMPILE_SYMBOL([
9 #include <linux/backing-dev.h>
10 struct backing_dev_info bdi;
13 int error __attribute__((unused)) =
14 bdi_setup_and_register(&bdi, name);
15 ], [bdi_setup_and_register], [mm/backing-dev.c], [
17 AC_DEFINE(HAVE_2ARGS_BDI_SETUP_AND_REGISTER, 1,
18 [bdi_setup_and_register() wants 2 args])
21 AC_MSG_CHECKING([whether bdi_setup_and_register() wants 3 args])
22 ZFS_LINUX_TRY_COMPILE_SYMBOL([
23 #include <linux/backing-dev.h>
24 struct backing_dev_info bdi;
27 unsigned int cap = BDI_CAP_MAP_COPY;
28 int error __attribute__((unused)) =
29 bdi_setup_and_register(&bdi, name, cap);
30 ], [bdi_setup_and_register], [mm/backing-dev.c], [
32 AC_DEFINE(HAVE_3ARGS_BDI_SETUP_AND_REGISTER, 1,
33 [bdi_setup_and_register() wants 3 args])