1dnl # 2dnl # Check for make_request_fn interface. 3dnl # 4AC_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 54AC_DEFUN([ZFS_AC_KERNEL_MAKE_REQUEST_FN], [ 55 dnl # Checked as part of the blk_alloc_queue_request_fn test 56 dnl # 57 dnl # Linux 5.9 API Change 58 dnl # make_request_fn was moved into block_device_operations->submit_bio 59 dnl # 60 AC_MSG_CHECKING([whether submit_bio is member of struct block_device_operations]) 61 ZFS_LINUX_TEST_RESULT([block_device_operations_submit_bio], [ 62 AC_MSG_RESULT(yes) 63 64 AC_DEFINE(HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS, 1, 65 [submit_bio is member of struct block_device_operations]) 66 67 dnl # 68 dnl # Linux 5.14 API Change: 69 dnl # blk_alloc_queue() + alloc_disk() combo replaced by 70 dnl # a single call to blk_alloc_disk(). 71 dnl # 72 AC_MSG_CHECKING([whether blk_alloc_disk() exists]) 73 ZFS_LINUX_TEST_RESULT([blk_alloc_disk], [ 74 AC_MSG_RESULT(yes) 75 AC_DEFINE([HAVE_BLK_ALLOC_DISK], 1, [blk_alloc_disk() exists]) 76 ], [ 77 AC_MSG_RESULT(no) 78 ]) 79 ],[ 80 AC_MSG_RESULT(no) 81 82 dnl # Checked as part of the blk_alloc_queue_request_fn test 83 dnl # 84 dnl # Linux 5.7 API Change 85 dnl # blk_alloc_queue() expects request function. 86 dnl # 87 AC_MSG_CHECKING([whether blk_alloc_queue() expects request function]) 88 ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn], [ 89 AC_MSG_RESULT(yes) 90 91 dnl # This is currently always the case. 92 AC_MSG_CHECKING([whether make_request_fn() returns blk_qc_t]) 93 AC_MSG_RESULT(yes) 94 95 AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN, 1, 96 [blk_alloc_queue() expects request function]) 97 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, 98 [make_request_fn() return type]) 99 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, 100 [Noting that make_request_fn() returns blk_qc_t]) 101 ],[ 102 dnl # 103 dnl # CentOS Stream 4.18.0-257 API Change 104 dnl # The Linux 5.7 blk_alloc_queue() change was back- 105 dnl # ported and the symbol renamed blk_alloc_queue_rh(). 106 dnl # As of this kernel version they're not providing 107 dnl # any compatibility code in the kernel for this. 108 dnl # 109 ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn_rh], [ 110 AC_MSG_RESULT(yes) 111 112 dnl # This is currently always the case. 113 AC_MSG_CHECKING([whether make_request_fn_rh() returns blk_qc_t]) 114 AC_MSG_RESULT(yes) 115 116 AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN_RH, 1, 117 [blk_alloc_queue_rh() expects request function]) 118 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, 119 [make_request_fn() return type]) 120 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, 121 [Noting that make_request_fn() returns blk_qc_t]) 122 ],[ 123 AC_MSG_RESULT(no) 124 125 dnl # 126 dnl # Linux 3.2 API Change 127 dnl # make_request_fn returns void. 128 dnl # 129 AC_MSG_CHECKING( 130 [whether make_request_fn() returns void]) 131 ZFS_LINUX_TEST_RESULT([make_request_fn_void], [ 132 AC_MSG_RESULT(yes) 133 AC_DEFINE(MAKE_REQUEST_FN_RET, void, 134 [make_request_fn() return type]) 135 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_VOID, 1, 136 [Noting that make_request_fn() returns void]) 137 ],[ 138 AC_MSG_RESULT(no) 139 140 dnl # 141 dnl # Linux 4.4 API Change 142 dnl # make_request_fn returns blk_qc_t. 143 dnl # 144 AC_MSG_CHECKING( 145 [whether make_request_fn() returns blk_qc_t]) 146 ZFS_LINUX_TEST_RESULT([make_request_fn_blk_qc_t], [ 147 AC_MSG_RESULT(yes) 148 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, 149 [make_request_fn() return type]) 150 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, 151 [Noting that make_request_fn() ] 152 [returns blk_qc_t]) 153 ],[ 154 ZFS_LINUX_TEST_ERROR([make_request_fn]) 155 ]) 156 ]) 157 ]) 158 ]) 159 ]) 160]) 161