Add build system

[zfs.git] / config / kernel-blk-rq-sectors.m4

diff --git a/config/kernel-blk-rq-sectors.m4 b/config/kernel-blk-rq-sectors.m4
new file mode 100644 (file)
index 0000000..db8c439
--- /dev/null
+++ b/config/kernel-blk-rq-sectors.m4
@@ -0,0 +1,18 @@
+dnl #
+dnl # 2.6.31 API change
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_BLK_RQ_SECTORS], [
+       AC_MSG_CHECKING([whether blk_rq_sectors() is available])
+       ZFS_LINUX_TRY_COMPILE([
+               #include <linux/blkdev.h>
+       ],[
+               struct request *req = NULL;
+               (void) blk_rq_sectors(req);
+       ],[
+               AC_MSG_RESULT(yes)
+               AC_DEFINE(HAVE_BLK_RQ_SECTORS, 1,
+                         [blk_rq_sectors() is available])
+       ],[
+               AC_MSG_RESULT(no)
+       ])
+])