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dnl #
dnl # 2.6.x API change
dnl #
AC_DEFUN([ZFS_AC_KERNEL_BDEV_BLOCK_DEVICE_OPERATIONS], [
AC_MSG_CHECKING([block device operation prototypes])
tmp_flags="$EXTRA_KCFLAGS"
EXTRA_KCFLAGS="-Wno-unused-but-set-variable"
ZFS_LINUX_TRY_COMPILE([
#include <linux/blkdev.h>
],[
int (*blk_open) (struct block_device *, fmode_t) = NULL;
int (*blk_release) (struct gendisk *, fmode_t) = NULL;
int (*blk_ioctl) (struct block_device *, fmode_t,
unsigned, unsigned long) = NULL;
int (*blk_compat_ioctl) (struct block_device *, fmode_t,
unsigned, unsigned long) = NULL;
struct block_device_operations blk_ops = {
.open = blk_open,
.release = blk_release,
.ioctl = blk_ioctl,
.compat_ioctl = blk_compat_ioctl,
};
blk_ops.open(NULL, 0);
blk_ops.release(NULL, 0);
blk_ops.ioctl(NULL, 0, 0, 0);
blk_ops.compat_ioctl(NULL, 0, 0, 0);
],[
AC_MSG_RESULT(struct block_device)
AC_DEFINE(HAVE_BDEV_BLOCK_DEVICE_OPERATIONS, 1,
[struct block_device_operations use bdevs])
],[
AC_MSG_RESULT(struct inode)
])
EXTRA_KCFLAGS="$tmp_flags"
])
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