X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=config%2Fkernel-rq-is_sync.m4;h=f6f51c87a081db8918bf8b0850b2b50d83a89613;hb=f1a05fa11484d67161606fd1ecf50bf2abc25ced;hp=40d0de80cd988319709b5ed6082ce8e0c511db59;hpb=c9c0d073da561bcbefbdf09c87fc75b227415619;p=zfs.git

diff --git a/config/kernel-rq-is_sync.m4 b/config/kernel-rq-is_sync.m4
index 40d0de8..f6f51c8 100644
--- a/config/kernel-rq-is_sync.m4
+++ b/config/kernel-rq-is_sync.m4
@@ -3,6 +3,8 @@ dnl # 2.6.x API change
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_RQ_IS_SYNC], [
 	AC_MSG_CHECKING([whether rq_is_sync() is available])
+	tmp_flags="$EXTRA_KCFLAGS"
+	EXTRA_KCFLAGS="${NO_UNUSED_BUT_SET_VARIABLE}"
 	ZFS_LINUX_TRY_COMPILE([
 		#include <linux/blkdev.h>
 	],[
@@ -15,4 +17,5 @@ AC_DEFUN([ZFS_AC_KERNEL_RQ_IS_SYNC], [
 	],[
 		AC_MSG_RESULT(no)
 	])
+	EXTRA_KCFLAGS="$tmp_flags"
 ])