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                 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                 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                 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                 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_cleanup_disk], [
  54                 #include <linux/blkdev.h>
  55         ],[
  56                 struct gendisk *disk  __attribute__ ((unused));
  57                 blk_cleanup_disk(disk);
  58         ])
  59 ])
  60
  61 AC_DEFUN([ZFS_AC_KERNEL_MAKE_REQUEST_FN], [
  62         dnl # Checked as part of the blk_alloc_queue_request_fn test
  63         dnl #
  64         dnl # Linux 5.9 API Change
  65         dnl # make_request_fn was moved into block_device_operations->submit_bio
  66         dnl #
  67         AC_MSG_CHECKING([whether submit_bio is member of struct block_device_operations])
  68         ZFS_LINUX_TEST_RESULT([block_device_operations_submit_bio], [
  69                 AC_MSG_RESULT(yes)
  70
  71                 AC_DEFINE(HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS, 1,
  72                     [submit_bio is member of struct block_device_operations])
  73
  74                 dnl #
  75                 dnl # Linux 5.14 API Change:
  76                 dnl # blk_alloc_queue() + alloc_disk() combo replaced by
  77                 dnl # a single call to blk_alloc_disk().
  78                 dnl #
  79                 AC_MSG_CHECKING([whether blk_alloc_disk() exists])
  80                 ZFS_LINUX_TEST_RESULT([blk_alloc_disk], [
  81                         AC_MSG_RESULT(yes)
  82                         AC_DEFINE([HAVE_BLK_ALLOC_DISK], 1, [blk_alloc_disk() exists])
  83
  84                         dnl #
  85                         dnl # 5.20 API change,
  86                         dnl # Removed blk_cleanup_disk(), put_disk() should be used.
  87                         dnl #
  88                         AC_MSG_CHECKING([whether blk_cleanup_disk() exists])
  89                         ZFS_LINUX_TEST_RESULT([blk_cleanup_disk], [
  90                                 AC_MSG_RESULT(yes)
  91                                 AC_DEFINE([HAVE_BLK_CLEANUP_DISK], 1,
  92                                     [blk_cleanup_disk() exists])
  93                         ], [
  94                                 AC_MSG_RESULT(no)
  95                         ])
  96                 ], [
  97                         AC_MSG_RESULT(no)
  98                 ])
  99         ],[
 100                 AC_MSG_RESULT(no)
 101
 102                 dnl # Checked as part of the blk_alloc_queue_request_fn test
 103                 dnl #
 104                 dnl # Linux 5.7 API Change
 105                 dnl # blk_alloc_queue() expects request function.
 106                 dnl #
 107                 AC_MSG_CHECKING([whether blk_alloc_queue() expects request function])
 108                 ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn], [
 109                         AC_MSG_RESULT(yes)
 110
 111                         dnl # This is currently always the case.
 112                         AC_MSG_CHECKING([whether make_request_fn() returns blk_qc_t])
 113                         AC_MSG_RESULT(yes)
 114
 115                         AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN, 1,
 116                             [blk_alloc_queue() expects request function])
 117                         AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t,
 118                             [make_request_fn() return type])
 119                         AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1,
 120                             [Noting that make_request_fn() returns blk_qc_t])
 121                 ],[
 122                         dnl #
 123                         dnl # CentOS Stream 4.18.0-257 API Change
 124                         dnl # The Linux 5.7 blk_alloc_queue() change was back-
 125                         dnl # ported and the symbol renamed blk_alloc_queue_rh().
 126                         dnl # As of this kernel version they're not providing
 127                         dnl # any compatibility code in the kernel for this.
 128                         dnl #
 129                         ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn_rh], [
 130                                 AC_MSG_RESULT(yes)
 131
 132                                 dnl # This is currently always the case.
 133                                 AC_MSG_CHECKING([whether make_request_fn_rh() returns blk_qc_t])
 134                                 AC_MSG_RESULT(yes)
 135
 136                                 AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN_RH, 1,
 137                                     [blk_alloc_queue_rh() expects request function])
 138                                 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t,
 139                                     [make_request_fn() return type])
 140                                 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1,
 141                                     [Noting that make_request_fn() returns blk_qc_t])
 142                         ],[
 143                                 AC_MSG_RESULT(no)
 144
 145                                 dnl #
 146                                 dnl # Linux 3.2 API Change
 147                                 dnl # make_request_fn returns void.
 148                                 dnl #
 149                                 AC_MSG_CHECKING(
 150                                     [whether make_request_fn() returns void])
 151                                 ZFS_LINUX_TEST_RESULT([make_request_fn_void], [
 152                                         AC_MSG_RESULT(yes)
 153                                         AC_DEFINE(MAKE_REQUEST_FN_RET, void,
 154                                             [make_request_fn() return type])
 155                                         AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_VOID, 1,
 156                                             [Noting that make_request_fn() returns void])
 157                                 ],[
 158                                         AC_MSG_RESULT(no)
 159
 160                                         dnl #
 161                                         dnl # Linux 4.4 API Change
 162                                         dnl # make_request_fn returns blk_qc_t.
 163                                         dnl #
 164                                         AC_MSG_CHECKING(
 165                                             [whether make_request_fn() returns blk_qc_t])
 166                                         ZFS_LINUX_TEST_RESULT([make_request_fn_blk_qc_t], [
 167                                                 AC_MSG_RESULT(yes)
 168                                                 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t,
 169                                                     [make_request_fn() return type])
 170                                                 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1,
 171                                                     [Noting that make_request_fn() ]
 172                                                     [returns blk_qc_t])
 173                                         ],[
 174                                                 ZFS_LINUX_TEST_ERROR([make_request_fn])
 175                                         ])
 176                                 ])
 177                         ])
 178                 ])
 179         ])
 180 ])