X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=config%2Fkernel-bdi-setup-and-register.m4;h=4196091e91bea70a89ae63201715f075e786b46e;hb=refs%2Fheads%2Frertzinger%2Ffeature-zpool-get--p;hp=56fab8757374bedad28515f75972cea13ab4c3c8;hpb=5547c2f1bf49802835fd6c52f15115ba344a2a8b;p=zfs.git

diff --git a/config/kernel-bdi-setup-and-register.m4 b/config/kernel-bdi-setup-and-register.m4
index 56fab87..4196091 100644
--- a/config/kernel-bdi-setup-and-register.m4
+++ b/config/kernel-bdi-setup-and-register.m4
@@ -5,11 +5,17 @@ dnl # exported by the kernel.  This is a trivial helper function but
 dnl # using it significantly simplifies the code surrounding setting
 dnl # up and tearing down the bdi structure.
 dnl #
-AC_DEFUN([ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER], [
-	ZFS_CHECK_SYMBOL_EXPORT(
-		[bdi_setup_and_register],
-		[mm/backing-dev.c],
-		[AC_DEFINE(HAVE_BDI_SETUP_AND_REGISTER, 1,
-		[bdi_setup_and_register() is available])],
-		[])
+AC_DEFUN([ZFS_AC_KERNEL_BDI_SETUP_AND_REGISTER],
+	[AC_MSG_CHECKING([whether bdi_setup_and_register() is available])
+	ZFS_LINUX_TRY_COMPILE_SYMBOL([
+		#include <linux/backing-dev.h>
+	], [
+		bdi_setup_and_register(NULL, NULL, 0);
+	], [bdi_setup_and_register], [mm/backing-dev.c], [
+		AC_MSG_RESULT(yes)
+		AC_DEFINE(HAVE_BDI_SETUP_AND_REGISTER, 1,
+		          [bdi_setup_and_register() is available])
+	], [
+		AC_MSG_RESULT(no)
+	])
 ])