diff options
Diffstat (limited to 'config/kernel-make-request-fn.m4')
-rw-r--r-- | config/kernel-make-request-fn.m4 | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/config/kernel-make-request-fn.m4 b/config/kernel-make-request-fn.m4 new file mode 100644 index 000000000000..1576fece1368 --- /dev/null +++ b/config/kernel-make-request-fn.m4 @@ -0,0 +1,101 @@ +dnl # +dnl # Check for make_request_fn interface. +dnl # +AC_DEFUN([ZFS_AC_KERNEL_SRC_MAKE_REQUEST_FN], [ + ZFS_LINUX_TEST_SRC([make_request_fn_void], [ + #include <linux/blkdev.h> + void make_request(struct request_queue *q, + struct bio *bio) { return; } + ],[ + blk_queue_make_request(NULL, &make_request); + ]) + + ZFS_LINUX_TEST_SRC([make_request_fn_blk_qc_t], [ + #include <linux/blkdev.h> + blk_qc_t make_request(struct request_queue *q, + struct bio *bio) { return (BLK_QC_T_NONE); } + ],[ + blk_queue_make_request(NULL, &make_request); + ]) + + ZFS_LINUX_TEST_SRC([blk_alloc_queue_request_fn], [ + #include <linux/blkdev.h> + blk_qc_t make_request(struct request_queue *q, + struct bio *bio) { return (BLK_QC_T_NONE); } + ],[ + struct request_queue *q __attribute__ ((unused)); + q = blk_alloc_queue(make_request, NUMA_NO_NODE); + ]) + + ZFS_LINUX_TEST_SRC([block_device_operations_submit_bio], [ + #include <linux/blkdev.h> + ],[ + struct block_device_operations o; + o.submit_bio = NULL; + ]) +]) + +AC_DEFUN([ZFS_AC_KERNEL_MAKE_REQUEST_FN], [ + dnl # Checked as part of the blk_alloc_queue_request_fn test + dnl # + dnl # Linux 5.9 API Change + dnl # make_request_fn was moved into block_device_operations->submit_bio + dnl # + AC_MSG_CHECKING([whether submit_bio is member of struct block_device_operations]) + ZFS_LINUX_TEST_RESULT([block_device_operations_submit_bio], [ + AC_MSG_RESULT(yes) + + AC_DEFINE(HAVE_SUBMIT_BIO_IN_BLOCK_DEVICE_OPERATIONS, 1, + [submit_bio is member of struct block_device_operations]) + ],[ + dnl # Checked as part of the blk_alloc_queue_request_fn test + dnl # + dnl # Linux 5.7 API Change + dnl # blk_alloc_queue() expects request function. + dnl # + AC_MSG_CHECKING([whether blk_alloc_queue() expects request function]) + ZFS_LINUX_TEST_RESULT([blk_alloc_queue_request_fn], [ + AC_MSG_CHECKING([whether make_request_fn() returns blk_qc_t]) + AC_MSG_RESULT(yes) + + AC_DEFINE(HAVE_BLK_ALLOC_QUEUE_REQUEST_FN, 1, + [blk_alloc_queue() expects request function]) + AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, + [make_request_fn() return type]) + AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, + [Noting that make_request_fn() returns blk_qc_t]) + ],[ + dnl # + dnl # Linux 3.2 API Change + dnl # make_request_fn returns void. + dnl # + AC_MSG_CHECKING([whether make_request_fn() returns void]) + ZFS_LINUX_TEST_RESULT([make_request_fn_void], [ + AC_MSG_RESULT(yes) + AC_DEFINE(MAKE_REQUEST_FN_RET, void, + [make_request_fn() return type]) + AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_VOID, 1, + [Noting that make_request_fn() returns void]) + ],[ + AC_MSG_RESULT(no) + + dnl # + dnl # Linux 4.4 API Change + dnl # make_request_fn returns blk_qc_t. + dnl # + AC_MSG_CHECKING( + [whether make_request_fn() returns blk_qc_t]) + ZFS_LINUX_TEST_RESULT([make_request_fn_blk_qc_t], [ + AC_MSG_RESULT(yes) + AC_DEFINE(MAKE_REQUEST_FN_RET, blk_qc_t, + [make_request_fn() return type]) + AC_DEFINE(HAVE_MAKE_REQUEST_FN_RET_QC, 1, + [Noting that make_request_fn() ] + [returns blk_qc_t]) + ],[ + ZFS_LINUX_TEST_ERROR([make_request_fn]) + ]) + ]) + ]) + ]) +]) |