kernel-bio_set_dev.m4

dnl #
dnl # Linux 4.14 API,
dnl #
dnl # The bio_set_dev() helper macro was introduced as part of the transition
dnl # to have struct gendisk in struct bio. 
dnl #
dnl # Linux 5.0 API,
dnl #
dnl # The bio_set_dev() helper macro was updated to internally depend on
dnl # bio_associate_blkg() symbol which is exported GPL-only.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_SRC_BIO_SET_DEV], [
	ZFS_LINUX_TEST_SRC([bio_set_dev], [
		#include <linux/bio.h>
		#include <linux/fs.h>
	],[
		struct block_device *bdev = NULL;
		struct bio *bio = NULL;
		bio_set_dev(bio, bdev);
	], [], [$ZFS_META_LICENSE])
])

AC_DEFUN([ZFS_AC_KERNEL_BIO_SET_DEV], [
	AC_MSG_CHECKING([whether bio_set_dev() is available])
	ZFS_LINUX_TEST_RESULT([bio_set_dev], [
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_BIO_SET_DEV, 1, [bio_set_dev() is available])

		AC_MSG_CHECKING([whether bio_set_dev() is GPL-only])
		ZFS_LINUX_TEST_RESULT([bio_set_dev_license], [
			AC_MSG_RESULT(no)
		],[
			AC_MSG_RESULT(yes)
			AC_DEFINE(HAVE_BIO_SET_DEV_GPL_ONLY, 1,
			    [bio_set_dev() GPL-only])
		])
	],[
		AC_MSG_RESULT(no)
	])
])