[patch] config/kernel-generic_io_acct.m4 patched for Linux 6.2.8 compatibility

kernel-generic_io_acct.m4-linux-6.2.8.patch (text/plain), 5.22 KB, created by Adrien Dessemond on 2023-03-26 14:41:44 UTC

--- a/config/kernel-generic_io_acct.m4	2023-03-26 10:00:39.867785447 -0400
+++ b/config/kernel-generic_io_acct.m4	2023-03-26 10:00:52.934452273 -0400
@@ -2,7 +2,20 @@
 dnl # Check for generic io accounting interface.
 dnl #
 AC_DEFUN([ZFS_AC_KERNEL_SRC_GENERIC_IO_ACCT], [
-	ZFS_LINUX_TEST_SRC([bdev_io_acct], [
+	ZFS_LINUX_TEST_SRC([bdev_io_acct_63], [
+		#include <linux/blkdev.h>
+	], [
+		struct block_device *bdev = NULL;
+		struct bio *bio = NULL;
+		unsigned long passed_time = 0;
+		unsigned long start_time;
+
+		start_time = bdev_start_io_acct(bdev, bio_op(bio),
+		    passed_time);
+		bdev_end_io_acct(bdev, bio_op(bio), bio_sectors(bio), start_time);
+	])
+
+	ZFS_LINUX_TEST_SRC([bdev_io_acct_old], [
 		#include <linux/blkdev.h>
 	], [
 		struct block_device *bdev = NULL;
@@ -63,74 +76,85 @@
 
 AC_DEFUN([ZFS_AC_KERNEL_GENERIC_IO_ACCT], [
 	dnl #
-	dnl # 5.19 API,
+	dnl # Linux 6.3, and then backports thereof, changed
+	dnl # the signatures on bdev_start_io_acct/bdev_end_io_acct
 	dnl #
-	dnl # disk_start_io_acct() and disk_end_io_acct() have been replaced by
-	dnl # bdev_start_io_acct() and bdev_end_io_acct().
-	dnl #
-	AC_MSG_CHECKING([whether generic bdev_*_io_acct() are available])
-	ZFS_LINUX_TEST_RESULT([bdev_io_acct], [
+	AC_MSG_CHECKING([whether 6.3+ bdev_*_io_acct() are available])
+	ZFS_LINUX_TEST_RESULT([bdev_io_acct_63], [
 		AC_MSG_RESULT(yes)
-		AC_DEFINE(HAVE_BDEV_IO_ACCT, 1, [bdev_*_io_acct() available])
+		AC_DEFINE(HAVE_BDEV_IO_ACCT_63, 1, [bdev_*_io_acct() available])
 	], [
 		AC_MSG_RESULT(no)
 
 		dnl #
-		dnl # 5.12 API,
+		dnl # 5.19 API,
 		dnl #
-		dnl # bio_start_io_acct() and bio_end_io_acct() became GPL-exported
-		dnl # so use disk_start_io_acct() and disk_end_io_acct() instead
+		dnl # disk_start_io_acct() and disk_end_io_acct() have been replaced by
+		dnl # bdev_start_io_acct() and bdev_end_io_acct().
 		dnl #
-		AC_MSG_CHECKING([whether generic disk_*_io_acct() are available])
-		ZFS_LINUX_TEST_RESULT([disk_io_acct], [
+		AC_MSG_CHECKING([whether pre-6.3 bdev_*_io_acct() are available])
+		ZFS_LINUX_TEST_RESULT([bdev_io_acct_old], [
 			AC_MSG_RESULT(yes)
-			AC_DEFINE(HAVE_DISK_IO_ACCT, 1, [disk_*_io_acct() available])
+			AC_DEFINE(HAVE_BDEV_IO_ACCT_OLD, 1, [bdev_*_io_acct() available])
 		], [
 			AC_MSG_RESULT(no)
-
 			dnl #
-			dnl # 5.7 API,
+			dnl # 5.12 API,
 			dnl #
-			dnl # Added bio_start_io_acct() and bio_end_io_acct() helpers.
+			dnl # bio_start_io_acct() and bio_end_io_acct() became GPL-exported
+			dnl # so use disk_start_io_acct() and disk_end_io_acct() instead
 			dnl #
-			AC_MSG_CHECKING([whether generic bio_*_io_acct() are available])
-			ZFS_LINUX_TEST_RESULT([bio_io_acct], [
+			AC_MSG_CHECKING([whether generic disk_*_io_acct() are available])
+			ZFS_LINUX_TEST_RESULT([disk_io_acct], [
 				AC_MSG_RESULT(yes)
-				AC_DEFINE(HAVE_BIO_IO_ACCT, 1, [bio_*_io_acct() available])
+				AC_DEFINE(HAVE_DISK_IO_ACCT, 1, [disk_*_io_acct() available])
 			], [
 				AC_MSG_RESULT(no)
 
 				dnl #
-				dnl # 4.14 API,
+				dnl # 5.7 API,
 				dnl #
-				dnl # generic_start_io_acct/generic_end_io_acct now require
-				dnl # request_queue to be provided. No functional changes,
-				dnl # but preparation for inflight accounting.
+				dnl # Added bio_start_io_acct() and bio_end_io_acct() helpers.
 				dnl #
-				AC_MSG_CHECKING([whether generic_*_io_acct wants 4 args])
-				ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_4args],
-				    [generic_start_io_acct], [block/bio.c], [
+				AC_MSG_CHECKING([whether generic bio_*_io_acct() are available])
+				ZFS_LINUX_TEST_RESULT([bio_io_acct], [
 					AC_MSG_RESULT(yes)
-					AC_DEFINE(HAVE_GENERIC_IO_ACCT_4ARG, 1,
-					    [generic_*_io_acct() 4 arg available])
+					AC_DEFINE(HAVE_BIO_IO_ACCT, 1, [bio_*_io_acct() available])
 				], [
 					AC_MSG_RESULT(no)
 
 					dnl #
-					dnl # 3.19 API addition
+					dnl # 4.14 API,
 					dnl #
-					dnl # torvalds/linux@394ffa50 allows us to increment
-					dnl # iostat counters without generic_make_request().
+					dnl # generic_start_io_acct/generic_end_io_acct now require
+					dnl # request_queue to be provided. No functional changes,
+					dnl # but preparation for inflight accounting.
 					dnl #
-					AC_MSG_CHECKING(
-					    [whether generic_*_io_acct wants 3 args])
-					ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_3args],
+					AC_MSG_CHECKING([whether generic_*_io_acct wants 4 args])
+					ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_4args],
 					    [generic_start_io_acct], [block/bio.c], [
 						AC_MSG_RESULT(yes)
-						AC_DEFINE(HAVE_GENERIC_IO_ACCT_3ARG, 1,
-						    [generic_*_io_acct() 3 arg available])
+						AC_DEFINE(HAVE_GENERIC_IO_ACCT_4ARG, 1,
+						    [generic_*_io_acct() 4 arg available])
 					], [
 						AC_MSG_RESULT(no)
+
+						dnl #
+						dnl # 3.19 API addition
+						dnl #
+						dnl # torvalds/linux@394ffa50 allows us to increment
+						dnl # iostat counters without generic_make_request().
+						dnl #
+						AC_MSG_CHECKING(
+						    [whether generic_*_io_acct wants 3 args])
+						ZFS_LINUX_TEST_RESULT_SYMBOL([generic_acct_3args],
+						    [generic_start_io_acct], [block/bio.c], [
+							AC_MSG_RESULT(yes)
+							AC_DEFINE(HAVE_GENERIC_IO_ACCT_3ARG, 1,
+							    [generic_*_io_acct() 3 arg available])
+						], [
+							AC_MSG_RESULT(no)
+						])
 					])
 				])
 			])