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 47AC_DEFUN([ZFS_AC_KERNEL_MAKE_REQUEST_FN], [ 48 dnl # Checked as part of the blk_alloc_queue_request_fn test 49 dnl # 50 dnl # Linux 5.9 API Change 51 dnl # make_request_fn was moved into block_device_operations->submit_bio 52 dnl # 53 AC_MSG_CHECKING([whether submit_bio is member of struct block_device_operations]) 54 ZFS_LINUX_TEST_RESULT([block_device_operations_submit_bio], [ 55 AC_MSG_RESULT(yes) 56 57 AC_DEFINE(HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS, 1, 58 [submit_bio is member of struct block_device_operations]) 59 ],[ 60 AC_MSG_RESULT(no) 61 62 dnl # Checked as part of the blk_alloc_queue_request_fn test 63 dnl # 64 dnl # Linux 5.7 API Change 65 dnl # blk_alloc_queue() expects request function. 66 dnl # 67 AC_MSG_CHECKING([whether blk_alloc_queue() expects request function]) 68 ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn], [ 69 AC_MSG_RESULT(yes) 70 71 dnl # This is currently always the case. 72 AC_MSG_CHECKING([whether make_request_fn() returns blk_qc_t]) 73 AC_MSG_RESULT(yes) 74 75 AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN, 1, 76 [blk_alloc_queue() expects request function]) 77 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, 78 [make_request_fn() return type]) 79 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, 80 [Noting that make_request_fn() returns blk_qc_t]) 81 ],[ 82 dnl # 83 dnl # CentOS Stream 4.18.0-257 API Change 84 dnl # The Linux 5.7 blk_alloc_queue() change was back- 85 dnl # ported and the symbol renamed blk_alloc_queue_rh(). 86 dnl # As of this kernel version they're not providing 87 dnl # any compatibility code in the kernel for this. 88 dnl # 89 ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn_rh], [ 90 AC_MSG_RESULT(yes) 91 92 dnl # This is currently always the case. 93 AC_MSG_CHECKING([whether make_request_fn_rh() returns blk_qc_t]) 94 AC_MSG_RESULT(yes) 95 96 AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN_RH, 1, 97 [blk_alloc_queue_rh() expects request function]) 98 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, 99 [make_request_fn() return type]) 100 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, 101 [Noting that make_request_fn() returns blk_qc_t]) 102 ],[ 103 AC_MSG_RESULT(no) 104 105 dnl # 106 dnl # Linux 3.2 API Change 107 dnl # make_request_fn returns void. 108 dnl # 109 AC_MSG_CHECKING( 110 [whether make_request_fn() returns void]) 111 ZFS_LINUX_TEST_RESULT([make_request_fn_void], [ 112 AC_MSG_RESULT(yes) 113 AC_DEFINE(MAKE_REQUEST_FN_RET, void, 114 [make_request_fn() return type]) 115 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_VOID, 1, 116 [Noting that make_request_fn() returns void]) 117 ],[ 118 AC_MSG_RESULT(no) 119 120 dnl # 121 dnl # Linux 4.4 API Change 122 dnl # make_request_fn returns blk_qc_t. 123 dnl # 124 AC_MSG_CHECKING( 125 [whether make_request_fn() returns blk_qc_t]) 126 ZFS_LINUX_TEST_RESULT([make_request_fn_blk_qc_t], [ 127 AC_MSG_RESULT(yes) 128 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, 129 [make_request_fn() return type]) 130 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, 131 [Noting that make_request_fn() ] 132 [returns blk_qc_t]) 133 ],[ 134 ZFS_LINUX_TEST_ERROR([make_request_fn]) 135 ]) 136 ]) 137 ]) 138 ]) 139 ]) 140]) 141