zfs/config/kernel-blkdev-get-by-path.m4

dnl #
dnl # 2.6.38 API change
dnl # open_bdev_exclusive() changed to blkdev_get_by_path()
dnl # close_bdev_exclusive() changed to blkdev_put()
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BLKDEV_GET_BY_PATH], [
	ZFS_LINUX_TEST_SRC([blkdev_get_by_path], [
		#include <linux/fs.h>
		#include <linux/blkdev.h>
	], [
		blkdev_get_by_path(NULL, 0, NULL);
	])
])

AC_DEFUN([ZFS_AC_KERNEL_BLKDEV_GET_BY_PATH], [
	AC_MSG_CHECKING([whether blkdev_get_by_path() is available])
	ZFS_LINUX_TEST_RESULT_SYMBOL([blkdev_get_by_path],
	    [blkdev_get_by_path], [fs/block_dev.c], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_BLKDEV_GET_BY_PATH, 1,
		    [blkdev_get_by_path() is available])
	], [
		AC_MSG_RESULT(no)
	])
])