Add build system

[zfs.git] / config / kernel-open-bdev-exclusive.m4

diff --git a/config/kernel-open-bdev-exclusive.m4 b/config/kernel-open-bdev-exclusive.m4
new file mode 100644 (file)
index 0000000..734b213
--- /dev/null
+++ b/config/kernel-open-bdev-exclusive.m4
@@ -0,0 +1,12 @@
+dnl #
+dnl # 2.6.28 API change
+dnl # open/close_bdev_excl() renamed to open/close_bdev_exclusive()
+dnl #
+AC_DEFUN([ZFS_AC_KERNEL_OPEN_BDEV_EXCLUSIVE], [
+       ZFS_CHECK_SYMBOL_EXPORT(
+               [open_bdev_exclusive],
+               [fs/block_dev.c],
+               [AC_DEFINE(HAVE_OPEN_BDEV_EXCLUSIVE, 1,
+               [open_bdev_exclusive() is available])],
+               [])
+])