config/kernel-bio-op.m4

   1 dnl #
   2 dnl # Linux 4.8 API,
   3 dnl #
   4 dnl # The bio_op() helper was introduced as a replacement for explicitly
   5 dnl # checking the bio->bi_rw flags.  The following checks are used to
   6 dnl # detect if a specific operation is supported.
   7 dnl #
   8 AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_DISCARD], [
   9         AC_MSG_CHECKING([whether REQ_OP_DISCARD is defined])
  10         ZFS_LINUX_TRY_COMPILE([
  11                 #include <linux/blk_types.h>
  12         ],[
  13                 int op __attribute__ ((unused)) = REQ_OP_DISCARD;
  14         ],[
  15                 AC_MSG_RESULT(yes)
  16                 AC_DEFINE(HAVE_REQ_OP_DISCARD, 1,
  17                     [REQ_OP_DISCARD is defined])
  18         ],[
  19                 AC_MSG_RESULT(no)
  20         ])
  21 ])
  22
  23 AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_SECURE_ERASE], [
  24         AC_MSG_CHECKING([whether REQ_OP_SECURE_ERASE is defined])
  25         ZFS_LINUX_TRY_COMPILE([
  26                 #include <linux/blk_types.h>
  27         ],[
  28                 int op __attribute__ ((unused)) = REQ_OP_SECURE_ERASE;
  29         ],[
  30                 AC_MSG_RESULT(yes)
  31                 AC_DEFINE(HAVE_REQ_OP_SECURE_ERASE, 1,
  32                     [REQ_OP_SECURE_ERASE is defined])
  33         ],[
  34                 AC_MSG_RESULT(no)
  35         ])
  36 ])
  37
  38
  39 AC_DEFUN([ZFS_AC_KERNEL_REQ_OP_FLUSH], [
  40         AC_MSG_CHECKING([whether REQ_OP_FLUSH is defined])
  41         ZFS_LINUX_TRY_COMPILE([
  42                 #include <linux/blk_types.h>
  43         ],[
  44                 int op __attribute__ ((unused)) = REQ_OP_FLUSH;
  45         ],[
  46                 AC_MSG_RESULT(yes)
  47                 AC_DEFINE(HAVE_REQ_OP_FLUSH, 1,
  48                     [REQ_OP_FLUSH is defined])
  49         ],[
  50                 AC_MSG_RESULT(no)
  51         ])
  52 ])
  53
  54 AC_DEFUN([ZFS_AC_KERNEL_BIO_BI_OPF], [
  55         AC_MSG_CHECKING([whether bio->bi_opf is defined])
  56         ZFS_LINUX_TRY_COMPILE([
  57                 #include <linux/bio.h>
  58         ],[
  59                 struct bio bio __attribute__ ((unused));
  60                 bio.bi_opf = 0;
  61         ],[
  62                 AC_MSG_RESULT(yes)
  63                 AC_DEFINE(HAVE_BIO_BI_OPF, 1, [bio->bi_opf is defined])
  64         ],[
  65                 AC_MSG_RESULT(no)
  66         ])
  67 ])
  68
  69 AC_DEFUN([ZFS_AC_KERNEL_HAVE_BIO_SET_OP_ATTRS], [
  70         AC_MSG_CHECKING([whether bio_set_op_attrs is available])
  71         ZFS_LINUX_TRY_COMPILE([
  72                 #include <linux/bio.h>
  73         ],[
  74                 struct bio *bio __attribute__ ((unused)) = NULL;
  75
  76                 bio_set_op_attrs(bio, 0, 0);
  77         ],[
  78                 AC_MSG_RESULT(yes)
  79                 AC_DEFINE(HAVE_BIO_SET_OP_ATTRS, 1,
  80                     [bio_set_op_attrs is available])
  81         ],[
  82                 AC_MSG_RESULT(no)
  83         ])
  84 ])