2 dnl # 2.6.30 API change
3 dnl # bdev_hardsect_size() replaced with bdev_logical_block_size(). While
4 dnl # it has been true for a while that there was no strict 1:1 mapping
5 dnl # between physical sector size and logical block size this change makes
8 AC_DEFUN([ZFS_AC_KERNEL_BDEV_LOGICAL_BLOCK_SIZE], [
9 AC_MSG_CHECKING([whether bdev_logical_block_size() is available])
10 ZFS_LINUX_TRY_COMPILE([
11 #include <linux/blkdev.h>
13 struct block_device *bdev = NULL;
14 bdev_logical_block_size(bdev);
17 AC_DEFINE(HAVE_BDEV_LOGICAL_BLOCK_SIZE, 1,
18 [bdev_logical_block_size() is available])