config/kernel-make-request-fn.m4

   1 dnl #
   2 dnl # Check for make_request_fn interface.
   3 dnl #
   4 AC_DEFUN([ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN], [
   5         ZFS_LINUX_TEST_SRC([make_request_fn_void], [
   6                 #include <linux/blkdev.h>
   7                 static void make_request(struct request_queue *q,
   8                     struct bio *bio) { return; }
   9         ],[
  10                 blk_queue_make_request(NULL, &make_request);
  11         ])
  12
  13         ZFS_LINUX_TEST_SRC([make_request_fn_blk_qc_t], [
  14                 #include <linux/blkdev.h>
  15                 static blk_qc_t make_request(struct request_queue *q,
  16                     struct bio *bio) { return (BLK_QC_T_NONE); }
  17         ],[
  18                 blk_queue_make_request(NULL, &make_request);
  19         ])
  20
  21         ZFS_LINUX_TEST_SRC([blk_alloc_queue_request_fn], [
  22                 #include <linux/blkdev.h>
  23                 static blk_qc_t make_request(struct request_queue *q,
  24                     struct bio *bio) { return (BLK_QC_T_NONE); }
  25         ],[
  26                 struct request_queue *q __attribute__ ((unused));
  27                 q = blk_alloc_queue(make_request, NUMA_NO_NODE);
  28         ])
  29
  30         ZFS_LINUX_TEST_SRC([blk_alloc_queue_request_fn_rh], [
  31                 #include <linux/blkdev.h>
  32                 static blk_qc_t make_request(struct request_queue *q,
  33                     struct bio *bio) { return (BLK_QC_T_NONE); }
  34         ],[
  35                 struct request_queue *q __attribute__ ((unused));
  36                 q = blk_alloc_queue_rh(make_request, NUMA_NO_NODE);
  37         ])
  38
  39         ZFS_LINUX_TEST_SRC([block_device_operations_submit_bio], [
  40                 #include <linux/blkdev.h>
  41         ],[
  42                 struct block_device_operations o;
  43                 o.submit_bio = NULL;
  44         ])
  45
  46         ZFS_LINUX_TEST_SRC([blk_alloc_disk], [
  47                 #include <linux/blkdev.h>
  48         ],[
  49                 struct gendisk *disk  __attribute__ ((unused));
  50                 disk = blk_alloc_disk(NUMA_NO_NODE);
  51         ])
  52
  53         ZFS_LINUX_TEST_SRC([blk_alloc_disk_2arg], [
  54                 #include <linux/blkdev.h>
  55         ],[
  56                 struct queue_limits *lim = NULL;
  57                 struct gendisk *disk  __attribute__ ((unused));
  58                 disk = blk_alloc_disk(lim, NUMA_NO_NODE);
  59         ])
  60
  61         ZFS_LINUX_TEST_SRC([blk_cleanup_disk], [
  62                 #include <linux/blkdev.h>
  63         ],[
  64                 struct gendisk *disk  __attribute__ ((unused));
  65                 blk_cleanup_disk(disk);
  66         ])
  67 ])
  68
  69 AC_DEFUN([ZFS_AC_KERNEL_MAKE_REQUEST_FN], [
  70         dnl # Checked as part of the blk_alloc_queue_request_fn test
  71         dnl #
  72         dnl # Linux 5.9 API Change
  73         dnl # make_request_fn was moved into block_device_operations->submit_bio
  74         dnl #
  75         AC_MSG_CHECKING([whether submit_bio is member of struct block_device_operations])
  76         ZFS_LINUX_TEST_RESULT([block_device_operations_submit_bio], [
  77                 AC_MSG_RESULT(yes)
  78
  79                 AC_DEFINE(HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS, 1,
  80                     [submit_bio is member of struct block_device_operations])
  81
  82                 dnl #
  83                 dnl # Linux 5.14 API Change:
  84                 dnl # blk_alloc_queue() + alloc_disk() combo replaced by
  85                 dnl # a single call to blk_alloc_disk().
  86                 dnl #
  87                 AC_MSG_CHECKING([whether blk_alloc_disk() exists])
  88                 ZFS_LINUX_TEST_RESULT([blk_alloc_disk], [
  89                         AC_MSG_RESULT(yes)
  90                         AC_DEFINE([HAVE_BLK_ALLOC_DISK], 1, [blk_alloc_disk() exists])
  91
  92                         dnl #
  93                         dnl # 5.20 API change,
  94                         dnl # Removed blk_cleanup_disk(), put_disk() should be used.
  95                         dnl #
  96                         AC_MSG_CHECKING([whether blk_cleanup_disk() exists])
  97                         ZFS_LINUX_TEST_RESULT([blk_cleanup_disk], [
  98                                 AC_MSG_RESULT(yes)
  99                                 AC_DEFINE([HAVE_BLK_CLEANUP_DISK], 1,
 100                                     [blk_cleanup_disk() exists])
 101                         ], [
 102                                 AC_MSG_RESULT(no)
 103                         ])
 104                 ], [
 105                         AC_MSG_RESULT(no)
 106                 ])
 107
 108                 dnl #
 109                 dnl # Linux 6.9 API Change:
 110                 dnl # blk_alloc_queue() takes a nullable queue_limits arg.
 111                 dnl #
 112                 AC_MSG_CHECKING([whether blk_alloc_disk() exists and takes 2 args])
 113                 ZFS_LINUX_TEST_RESULT([blk_alloc_disk_2arg], [
 114                         AC_MSG_RESULT(yes)
 115                         AC_DEFINE([HAVE_BLK_ALLOC_DISK_2ARG], 1, [blk_alloc_disk() exists and takes 2 args])
 116
 117                         dnl #
 118                         dnl # 5.20 API change,
 119                         dnl # Removed blk_cleanup_disk(), put_disk() should be used.
 120                         dnl #
 121                         AC_MSG_CHECKING([whether blk_cleanup_disk() exists])
 122                         ZFS_LINUX_TEST_RESULT([blk_cleanup_disk], [
 123                                 AC_MSG_RESULT(yes)
 124                                 AC_DEFINE([HAVE_BLK_CLEANUP_DISK], 1,
 125                                     [blk_cleanup_disk() exists])
 126                         ], [
 127                                 AC_MSG_RESULT(no)
 128                         ])
 129                 ], [
 130                         AC_MSG_RESULT(no)
 131                 ])
 132         ],[
 133                 AC_MSG_RESULT(no)
 134
 135                 dnl # Checked as part of the blk_alloc_queue_request_fn test
 136                 dnl #
 137                 dnl # Linux 5.7 API Change
 138                 dnl # blk_alloc_queue() expects request function.
 139                 dnl #
 140                 AC_MSG_CHECKING([whether blk_alloc_queue() expects request function])
 141                 ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn], [
 142                         AC_MSG_RESULT(yes)
 143
 144                         dnl # This is currently always the case.
 145                         AC_MSG_CHECKING([whether make_request_fn() returns blk_qc_t])
 146                         AC_MSG_RESULT(yes)
 147
 148                         AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN, 1,
 149                             [blk_alloc_queue() expects request function])
 150                         AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t,
 151                             [make_request_fn() return type])
 152                         AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1,
 153                             [Noting that make_request_fn() returns blk_qc_t])
 154                 ],[
 155                         dnl #
 156                         dnl # CentOS Stream 4.18.0-257 API Change
 157                         dnl # The Linux 5.7 blk_alloc_queue() change was back-
 158                         dnl # ported and the symbol renamed blk_alloc_queue_rh().
 159                         dnl # As of this kernel version they're not providing
 160                         dnl # any compatibility code in the kernel for this.
 161                         dnl #
 162                         ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn_rh], [
 163                                 AC_MSG_RESULT(yes)
 164
 165                                 dnl # This is currently always the case.
 166                                 AC_MSG_CHECKING([whether make_request_fn_rh() returns blk_qc_t])
 167                                 AC_MSG_RESULT(yes)
 168
 169                                 AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN_RH, 1,
 170                                     [blk_alloc_queue_rh() expects request function])
 171                                 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t,
 172                                     [make_request_fn() return type])
 173                                 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1,
 174                                     [Noting that make_request_fn() returns blk_qc_t])
 175                         ],[
 176                                 AC_MSG_RESULT(no)
 177
 178                                 dnl #
 179                                 dnl # Linux 3.2 API Change
 180                                 dnl # make_request_fn returns void.
 181                                 dnl #
 182                                 AC_MSG_CHECKING(
 183                                     [whether make_request_fn() returns void])
 184                                 ZFS_LINUX_TEST_RESULT([make_request_fn_void], [
 185                                         AC_MSG_RESULT(yes)
 186                                         AC_DEFINE(MAKE_REQUEST_FN_RET, void,
 187                                             [make_request_fn() return type])
 188                                         AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_VOID, 1,
 189                                             [Noting that make_request_fn() returns void])
 190                                 ],[
 191                                         AC_MSG_RESULT(no)
 192
 193                                         dnl #
 194                                         dnl # Linux 4.4 API Change
 195                                         dnl # make_request_fn returns blk_qc_t.
 196                                         dnl #
 197                                         AC_MSG_CHECKING(
 198                                             [whether make_request_fn() returns blk_qc_t])
 199                                         ZFS_LINUX_TEST_RESULT([make_request_fn_blk_qc_t], [
 200                                                 AC_MSG_RESULT(yes)
 201                                                 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t,
 202                                                     [make_request_fn() return type])
 203                                                 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1,
 204                                                     [Noting that make_request_fn() ]
 205                                                     [returns blk_qc_t])
 206                                         ],[
 207                                                 ZFS_LINUX_TEST_ERROR([make_request_fn])
 208                                         ])
 209                                 ])
 210                         ])
 211                 ])
 212         ])
 213 ])