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([block_device_operations_submit_bio], [ 31 #include <linux/blkdev.h> 32 ],[ 33 struct block_device_operations o; 34 o.submit_bio = NULL; 35 ]) 36]) 37 38AC_DEFUN([ZFS_AC_KERNEL_MAKE_REQUEST_FN], [ 39 dnl # Checked as part of the blk_alloc_queue_request_fn test 40 dnl # 41 dnl # Linux 5.9 API Change 42 dnl # make_request_fn was moved into block_device_operations->submit_bio 43 dnl # 44 AC_MSG_CHECKING([whether submit_bio is member of struct block_device_operations]) 45 ZFS_LINUX_TEST_RESULT([block_device_operations_submit_bio], [ 46 AC_MSG_RESULT(yes) 47 48 AC_DEFINE(HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS, 1, 49 [submit_bio is member of struct block_device_operations]) 50 ],[ 51 dnl # Checked as part of the blk_alloc_queue_request_fn test 52 dnl # 53 dnl # Linux 5.7 API Change 54 dnl # blk_alloc_queue() expects request function. 55 dnl # 56 AC_MSG_CHECKING([whether blk_alloc_queue() expects request function]) 57 ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn], [ 58 AC_MSG_CHECKING([whether make_request_fn() returns blk_qc_t]) 59 AC_MSG_RESULT(yes) 60 61 AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN, 1, 62 [blk_alloc_queue() expects request function]) 63 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, 64 [make_request_fn() return type]) 65 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, 66 [Noting that make_request_fn() returns blk_qc_t]) 67 ],[ 68 dnl # 69 dnl # Linux 3.2 API Change 70 dnl # make_request_fn returns void. 71 dnl # 72 AC_MSG_CHECKING([whether make_request_fn() returns void]) 73 ZFS_LINUX_TEST_RESULT([make_request_fn_void], [ 74 AC_MSG_RESULT(yes) 75 AC_DEFINE(MAKE_REQUEST_FN_RET, void, 76 [make_request_fn() return type]) 77 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_VOID, 1, 78 [Noting that make_request_fn() returns void]) 79 ],[ 80 AC_MSG_RESULT(no) 81 82 dnl # 83 dnl # Linux 4.4 API Change 84 dnl # make_request_fn returns blk_qc_t. 85 dnl # 86 AC_MSG_CHECKING( 87 [whether make_request_fn() returns blk_qc_t]) 88 ZFS_LINUX_TEST_RESULT([make_request_fn_blk_qc_t], [ 89 AC_MSG_RESULT(yes) 90 AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, 91 [make_request_fn() return type]) 92 AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, 93 [Noting that make_request_fn() ] 94 [returns blk_qc_t]) 95 ],[ 96 ZFS_LINUX_TEST_ERROR([make_request_fn]) 97 ]) 98 ]) 99 ]) 100 ]) 101]) 102