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dnl #
dnl # Linux 4.8 API,
dnl #
dnl # The bio_op() helper was introduced as a replacement for explicitly
dnl # checking the bio->bi_rw flags. The following checks are used to
dnl # detect if a specific operation is supported.
dnl #
AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_DISCARD], [
AC_MSG_CHECKING([whether REQ_OP_DISCARD is defined])
ZFS_LINUX_TRY_COMPILE([
#include <linux/blk_types.h>
],[
enum req_op op __attribute__ ((unused)) = REQ_OP_DISCARD;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_REQ_OP_DISCARD, 1,
[REQ_OP_DISCARD is defined])
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_SECURE_ERASE], [
AC_MSG_CHECKING([whether REQ_OP_SECURE_ERASE is defined])
ZFS_LINUX_TRY_COMPILE([
#include <linux/blk_types.h>
],[
enum req_op op __attribute__ ((unused)) = REQ_OP_SECURE_ERASE;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_REQ_OP_SECURE_DISCARD, 1,
[REQ_OP_SECURE_ERASE is defined])
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_FLUSH], [
AC_MSG_CHECKING([whether REQ_OP_FLUSH is defined])
ZFS_LINUX_TRY_COMPILE([
#include <linux/blk_types.h>
],[
enum req_op op __attribute__ ((unused)) = REQ_OP_FLUSH;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_REQ_OP_FLUSH, 1,
[REQ_OP_FLUSH is defined])
],[
AC_MSG_RESULT(no)
])
])
AC_DEFUN([ZFS_AC_KERNEL_BIO_BI_OPF], [
AC_MSG_CHECKING([whether bio->bi_opf is defined])
ZFS_LINUX_TRY_COMPILE([
#include <linux/bio.h>
],[
struct bio bio __attribute__ ((unused));
bio.bi_opf = 0;
],[
AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_BIO_BI_OPF, 1, [bio->bi_opf is defined])
],[
AC_MSG_RESULT(no)
])
])
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