X-Git-Url: https://git.whamcloud.com/?p=fs%2Flustre-release.git;a=blobdiff_plain;f=config%2Flustre-build-ldiskfs.m4;h=17b36e24d33b63b60e34bfe9a36ce5bb8696d583;hp=180eaf4bb29ea8e007996ae5881d1627ab8f5ab0;hb=HEAD;hpb=7ab19daea71da50401d3fbea696c86454118c9d1

diff --git a/config/lustre-build-ldiskfs.m4 b/config/lustre-build-ldiskfs.m4
index 180eaf4..8cc9ade 100644
--- a/config/lustre-build-ldiskfs.m4
+++ b/config/lustre-build-ldiskfs.m4
@@ -1,3 +1,13 @@
+# SPDX-License-Identifier: GPL-2.0
+
+#
+# This file is part of Lustre, http://www.lustre.org/
+#
+# config/lustre-build-ldiskfs.m4
+#
+# ldiskfs OSD related configuration
+#
+
 #
 # LDISKFS_LINUX_SERIES
 #
@@ -13,133 +23,319 @@ esac
 AS_IF([test -z "$LDISKFS_SERIES"], [
 AS_IF([test x$RHEL_KERNEL = xyes], [
 	case $RHEL_RELEASE_NO in
-	72)	LDISKFS_SERIES="3.10-rhel7.2.series"	;;
-	71)	LDISKFS_SERIES="3.10-rhel7.series"	;;
-	68)	LDISKFS_SERIES="2.6-rhel6.8.series"	;;
-	67)	LDISKFS_SERIES="2.6-rhel6.7.series"	;;
-	66)	LDISKFS_SERIES="2.6-rhel6.6.series"	;;
-	65)	LDISKFS_SERIES="2.6-rhel6.5.series"	;;
-	64)	LDISKFS_SERIES="2.6-rhel6.4.series"	;;
-	6[0-3])	LDISKFS_SERIES="2.6-rhel6.series"	;;
+	93)     LDISKFS_SERIES="5.14-rhel9.3.series"    ;;
+	92)     LDISKFS_SERIES="5.14-rhel9.2.series"    ;;
+	91)     LDISKFS_SERIES="5.14-rhel9.1.series"    ;;
+	90)     LDISKFS_SERIES="5.14-rhel9.series"      ;;
+	89)     LDISKFS_SERIES="4.18-rhel8.9.series"    ;;
+	88)     LDISKFS_SERIES="4.18-rhel8.8.series"    ;;
+	87)     LDISKFS_SERIES="4.18-rhel8.7.series"    ;;
+	86)     LDISKFS_SERIES="4.18-rhel8.6.series"    ;;
+	85)     LDISKFS_SERIES="4.18-rhel8.5.series"    ;;
+	84)     LDISKFS_SERIES="4.18-rhel8.4.series"    ;;
+	79)	LDISKFS_SERIES="3.10-rhel7.9.series"	;;
 	esac
 ], [test x$SUSE_KERNEL = xyes], [
-	AS_VERSION_COMPARE([$LINUXRELEASE],[3.12.0],[
-	AS_VERSION_COMPARE([$LINUXRELEASE],[3.0.0],[
-	AS_VERSION_COMPARE([$LINUXRELEASE],[2.6.32], [],
-	[LDISKFS_SERIES="2.6-sles11.series"],[LDISKFS_SERIES="2.6-sles11.series"])],
-	[LDISKFS_SERIES="3.0-sles11.series"],[
-		PLEV=$(grep PATCHLEVEL /etc/SuSE-release | sed -e 's/.*= *//')
-		case $PLEV in
-		2) LDISKFS_SERIES="3.0-sles11.series"
-			;;
-		3|4) LDISKFS_SERIES="3.0-sles11sp3.series"
+	AS_VERSION_COMPARE([$LINUXRELEASE],[5.3.18],[
+	AS_VERSION_COMPARE([$LINUXRELEASE],[4.12.14],[], [], [
+		suse_conf=$LINUX_OBJ/include/generated/uapi/linux/suse_version.h
+		suse_vers=$(awk '[$]2 == "SUSE_VERSION" {print [$]3 }' $suse_conf)
+		suse_patchlevel=$(awk '[$]2 == "SUSE_PATCHLEVEL" {print [$]3 }' $suse_conf)
+		case ${suse_vers}sp$suse_patchlevel in # (
+		15sp0 ) LDISKFS_SERIES="4.12-sles15.series"
+			if test ! -f $LINUX/arch/x86/kernel/cpu/hygon.c ; then
+				# This file was added shortly after -150.22 so
+				# this must be 150.22 or earlier
+				LDISKFS_SERIES="4.12-sles15-22.series"
+			fi
+			;; # (
+		15sp1 ) LDISKFS_SERIES="4.12-sles15sp1.series"
+			if test ! -f $LINUX/arch/x86/kernel/cpu/umwait.c ; then
+				# This file was added after -197.7 so
+				# this must be -197.7 or earlier
+				LDISKFS_SERIES="4.12-sles15sp1-7.series"
+			fi
 			;;
 		esac
-	])],[LDISKFS_SERIES="3.12-sles12.series"],[
-		PLEV=$(grep PATCHLEVEL /etc/SuSE-release | sed -e 's/.*= *//')
-		case $PLEV in
-		1) LDISKFS_SERIES="3.12-sles12sp1.series"
+	]
+	)], [LDISKFS_SERIES="5.4.21-ml.series"],
+	    [
+		suse_conf=$LINUX_OBJ/include/generated/uapi/linux/suse_version.h
+		suse_vers=$(awk '[$]2 == "SUSE_VERSION" {print [$]3 }' $suse_conf)
+		suse_patchlevel=$(awk '[$]2 == "SUSE_PATCHLEVEL" {print [$]3 }' $suse_conf)
+		case ${suse_vers}sp${suse_patchlevel} in # (
+		15sp2 ) LDISKFS_SERIES="5.4.21-ml.series"
+			grep -A3 ext4_update_dx_flag $LINUX/fs/ext4/ext4.h \
+			  | grep ext4_test_inode_flag
+			if test $? -eq 0; then
+				LDISKFS_SERIES="5.4.0-66-ubuntu20.series"
+			fi
+			;; # (
+		15sp3 ) LDISKFS_SERIES="5.3.18-sles15sp3.series"
+			update=$(echo $LINUXRELEASE | cut -d- -f2 | cut -d. -f2)
+			if test $update -ge 59; then
+				LDISKFS_SERIES="5.3.18-sles15sp3-59.series"
+			fi
+			;;
+		15sp4 ) LDISKFS_SERIES="5.14.21-sles15sp4.series"
 			;;
-		*) LDISKFS_SERIES="3.12-sles12.series"
+		15sp5 ) LDISKFS_SERIES="5.14.21-sles15sp5.series"
 			;;
 		esac
-	])
+	    ])
+], [test x$UBUNTU_KERNEL = xyes], [
+        BASEVER=$(echo $LINUXRELEASE | cut -d'-' -f1)
+	AS_VERSION_COMPARE([$BASEVER],[5.15.0],[
+	AS_VERSION_COMPARE([$BASEVER],[5.11.0],[
+	AS_VERSION_COMPARE([$BASEVER],[5.8.0],[
+	AS_VERSION_COMPARE([$BASEVER],[5.4.0],[
+	AS_VERSION_COMPARE([$BASEVER],[5.0.0],[
+	AS_VERSION_COMPARE([$BASEVER],[4.15.0],[
+	AS_VERSION_COMPARE([$BASEVER],[4.4.0], [],
+	[
+		KPLEV=$(echo $LINUXRELEASE | cut -d'-' -f2)
+		AS_IF(
+			[test -z "$KPLEV"], [
+				AC_MSG_WARN([Failed to determine Kernel patch level. Assume latest.])
+				LDISKFS_SERIES="4.4.0-73-ubuntu14+16.series"
+			],
+			[test $KPLEV -ge 73], [LDISKFS_SERIES="4.4.0-73-ubuntu14+16.series"],
+			[test $KPLEV -ge 62], [LDISKFS_SERIES="4.4.0-62-ubuntu14+16.series"],
+			[test $KPLEV -ge 49], [LDISKFS_SERIES="4.4.0-49-ubuntu14+16.series"],
+			[LDISKFS_SERIES="4.4.0-45-ubuntu14+16.series"]
+		)
+	],
+	[LDISKFS_SERIES="4.4.0-73-ubuntu14+16.series"])],
+	[
+		KPLEV=$(echo $LINUXRELEASE | cut -d'-' -f2)
+		AS_IF(
+			[test -z "$KPLEV"], [
+				AC_MSG_WARN([Failed to determine Kernel patch level. Assume latest.])
+				LDISKFS_SERIES="4.15.0-24-ubuntu18.series"
+			],
+			[test $KPLEV -ge 24], [LDISKFS_SERIES="4.15.0-24-ubuntu18.series"],
+			[test $KPLEV -ge 20], [LDISKFS_SERIES="4.15.0-20-ubuntu18.series"]
+		)
+	],
+	[LDISKFS_SERIES="4.15.0-24-ubuntu18.series"])],
+	[LDISKFS_SERIES="5.0.0-13-ubuntu19.series"],
+	[LDISKFS_SERIES="5.0.0-13-ubuntu19.series"])],
+	[
+		KPLEV=$(echo $LINUXRELEASE | cut -d'-' -f2)
+		AS_IF(
+			[test -z "$KPLEV"], [
+				AC_MSG_WARN([Failed to determine Kernel patch level. Assume latest.])
+				LDISKFS_SERIES="5.4.0-90-ubuntu20.series"
+			],
+			[test $KPLEV -eq 1007], [LDISKFS_SERIES="5.4.0-42-ubuntu20.series"],
+			[test $KPLEV -ge 90], [LDISKFS_SERIES="5.4.0-90-ubuntu20.series"],
+			[test $KPLEV -ge 80], [LDISKFS_SERIES="5.4.0-80-ubuntu20.series"],
+			[test $KPLEV -ge 66], [LDISKFS_SERIES="5.4.0-66-ubuntu20.series"],
+			[LDISKFS_SERIES="5.4.0-42-ubuntu20.series"]
+		)
+	],
+	[LDISKFS_SERIES="5.4.0-ml.series"])],
+	[
+		KPLEV=$(echo $LINUXRELEASE | cut -d'-' -f2)
+		AS_IF(
+			[test -z "$KPLEV"], [
+				AC_MSG_WARN([Failed to determine Kernel patch level. Assume latest.])
+				LDISKFS_SERIES="5.8.0-63-ubuntu20.series"
+			],
+			[test $KPLEV -ge 63], [LDISKFS_SERIES="5.8.0-63-ubuntu20.series"],
+			[LDISKFS_SERIES="5.8.0-53-ubuntu20.series"]
+		)
+	],
+	[LDISKFS_SERIES="5.8.0-ml.series"])],
+	[LDISKFS_SERIES="5.11.0-40-ubuntu20.series"],
+	[LDISKFS_SERIES="5.11.0-40-ubuntu20.series"])],
+	[LDISKFS_SERIES="5.15.0-83-ubuntu20.series"],
+	[LDISKFS_SERIES="5.15.0-83-ubuntu20.series"])
+], [test x$OPENEULER_KERNEL = xyes], [
+	case $OPENEULER_VERSION_NO in
+	2203.0) LDISKFS_SERIES="5.10.0-oe2203.series" ;;
+	2203.*) LDISKFS_SERIES="5.10.0-oe2203sp1.series" ;;
+	esac
 ])
 ])
+# Not RHEL/SLES/openEuler or Ubuntu .. probably mainline
+AS_IF([test -z "$LDISKFS_SERIES"],
+	[
+	AS_VERSION_COMPARE([$LINUXRELEASE],[5.4.0],[],
+	[LDISKFS_SERIES="5.4.0-ml.series"],[
+	AS_VERSION_COMPARE([$LINUXRELEASE],[5.4.21],
+	  [LDISKFS_SERIES="5.4.0-ml.series"],  # lt
+	  [LDISKFS_SERIES="5.4.21-ml.series"], # eq
+	  [AS_VERSION_COMPARE([$LINUXRELEASE],[5.8.0],
+	    [LDISKFS_SERIES="5.4.136-ml.series"], # lt
+	    [LDISKFS_SERIES="5.8.0-ml.series"],  # eq
+	    [AS_VERSION_COMPARE([$LINUXRELEASE],[5.9.0],
+	      [LDISKFS_SERIES="5.8.0-ml.series"],  # lt
+	      [LDISKFS_SERIES="5.9.0-ml.series"],  # eq
+	      [AS_VERSION_COMPARE([$LINUXRELEASE],[5.10.0],
+	        [LDISKFS_SERIES="5.9.0-ml.series"],  # lt
+	        [LDISKFS_SERIES="5.10.0-ml.series"],  # eq
+	        [LDISKFS_SERIES="5.10.0-ml.series"],  # gt
+	      )]
+	    )]
+	  )]
+		)])
+	],
+[])
 AS_IF([test -z "$LDISKFS_SERIES"],
 	[AC_MSG_RESULT([failed to identify series])],
-	[AC_MSG_RESULT([$LDISKFS_SERIES])])
+	[AC_MSG_RESULT([$LDISKFS_SERIES for $LINUXRELEASE])])
 AC_SUBST(LDISKFS_SERIES)
 ]) # LDISKFS_LINUX_SERIES
 
 #
-# LB_EXT_FREE_BLOCKS_WITH_BUFFER_HEAD
+# LB_EXT4_BREAD_4ARGS
 #
-# 2.6.32-rc7 ext4_free_blocks requires struct buffer_head
-# Note that RHEL6 is pre 2.6.32-rc7 so this check is still needed.
+# 3.18 ext4_bread has 4 arguments
+# NOTE: It may not be exported for modules, use a positive compiler test here.
 #
-AC_DEFUN([LB_EXT_FREE_BLOCKS_WITH_BUFFER_HEAD], [
-LB_CHECK_COMPILE([if 'ext4_free_blocks' needs 'struct buffer_head'],
-ext4_free_blocks_with_buffer_head, [
-	#include <linux/fs.h>
-	#include "$EXT4_SRC_DIR/ext4.h"
-],[
-	ext4_free_blocks(NULL, NULL, NULL, 0, 0, 0);
-],[
-	AC_DEFINE(HAVE_EXT_FREE_BLOCK_WITH_BUFFER_HEAD, 1,
-		[ext4_free_blocks do not require struct buffer_head])
+AC_DEFUN([LB_SRC_EXT4_BREAD_4ARGS], [
+	LB2_LINUX_TEST_SRC([ext4_bread], [
+		#include <linux/fs.h>
+		#include "$EXT4_SRC_DIR/ext4.h"
+
+		struct buffer_head *ext4_bread(handle_t *handle,
+					       struct inode *inode,
+					       ext4_lblk_t block, int map_flags)
+		{
+			struct buffer_head *bh = NULL;
+			(void)handle;
+			(void)inode;
+			(void)block;
+			(void)map_flags;
+			return bh;
+		}
+	],[
+		ext4_bread(NULL, NULL, 0, 0);
+	],[],[],[ext4_bread])
 ])
-]) # LB_EXT_FREE_BLOCKS_WITH_BUFFER_HEAD
+AC_DEFUN([LB_EXT4_BREAD_4ARGS], [
+	LB2_MSG_LINUX_TEST_RESULT([if ext4_bread takes 4 arguments],
+	[ext4_bread], [
+		AC_DEFINE(HAVE_EXT4_BREAD_4ARGS, 1,
+			[ext4_bread takes 4 arguments])
+	])
+]) # LB_EXT4_BREAD_4ARGS
 
 #
-# LB_EXT_PBLOCK
+# LB_EXT4_HAVE_INFO_DQUOT
 #
-# 2.6.35 renamed ext_pblock to ext4_ext_pblock(ex)
+# in linux 4.4 i_dqout is in ext4_inode_info, not in struct inode
 #
-AC_DEFUN([LB_EXT_PBLOCK], [
-LB_CHECK_COMPILE([if Linux kernel has 'ext_pblock'],
-ext_pblock, [
-	#include <linux/fs.h>
-	#include "$EXT4_SRC_DIR/ext4_extents.h"
-],[
-	ext_pblock(NULL);
-],[
-	AC_DEFINE(HAVE_EXT_PBLOCK, 1, [Linux kernel has ext_pblock])
+AC_DEFUN([LB_SRC_EXT4_HAVE_INFO_DQUOT], [
+	LB2_LINUX_TEST_SRC([ext4_info_dquot], [
+		#include <linux/fs.h>
+		#include <linux/quota.h>
+		#include "$EXT4_SRC_DIR/ext4.h"
+	],[
+		struct ext4_inode_info in;
+		struct dquot *dq;
+
+		dq = in.i_dquot[0];
+	])
 ])
-]) # LB_EXT_PBLOCK
+AC_DEFUN([LB_EXT4_HAVE_INFO_DQUOT], [
+	LB2_MSG_LINUX_TEST_RESULT([if i_dquot is in ext4_inode_info],
+	[ext4_info_dquot], [
+		AC_DEFINE(HAVE_EXT4_INFO_DQUOT, 1,
+			[i_dquot is in ext4_inode_info])
+	])
+]) # LB_EXT4_HAVE_INFO_DQUOT
 
 #
-# LB_EXT4_JOURNAL_START_3ARGS
+# LB_EXT4_HAVE_I_CRYPT_INFO
 #
-# 3.9 added a type argument to ext4_journal_start and friends
+# in linux 4.8 i_crypt_info moved from ext4_inode_info to struct inode
 #
-AC_DEFUN([LB_EXT4_JOURNAL_START_3ARGS], [
-LB_CHECK_COMPILE([if ext4_journal_start takes 3 arguments],
-ext4_journal_start, [
-	#include <linux/fs.h>
-	#include "$EXT4_SRC_DIR/ext4_jbd2.h"
-],[
-	ext4_journal_start(NULL, 0, 0);
-],[
-	AC_DEFINE(JOURNAL_START_HAS_3ARGS, 1, [ext4_journal_start takes 3 arguments])
+# Determine if we need to enable CONFIG_LDISKFS_FS_ENCRYPTION.
+# If we have i_crypt_info in ext4_inode_info, the config option
+# should be enabled to make the ldiskfs module compilation happy.
+# Otherwise i_crypy_info is in struct inode, we need to check kernel
+# config option to determine that.
+#
+AC_DEFUN([LB_SRC_EXT4_HAVE_I_CRYPT_INFO], [
+	LB2_SRC_CHECK_CONFIG([EXT4_FS_ENCRYPTION])
+	LB2_LINUX_TEST_SRC([ext4_i_crypt_info], [
+		#define CONFIG_EXT4_FS_ENCRYPTION 1
+		#include <linux/fs.h>
+		#include "$EXT4_SRC_DIR/ext4.h"
+	],[
+		struct ext4_inode_info in;
+
+		in.i_crypt_info = NULL;
+	])
 ])
-]) # LB_EXT4_JOURNAL_START_3ARGS
+AC_DEFUN([LB_EXT4_HAVE_I_CRYPT_INFO], [
+	LB2_MSG_LINUX_TEST_RESULT([if i_crypt_info is in ext4_inode_info],
+	[ext4_i_crypt_info], [
+		AC_DEFINE(CONFIG_LDISKFS_FS_ENCRYPTION, 1,
+			[enable encryption for ldiskfs])
+		test_have_i_crypt_info=yes
+	],[
+		test_have_i_crypt_info=no
+	])
+	AS_IF([test x$test_have_i_crypt_info = xno], [
+		LB2_TEST_CHECK_CONFIG([EXT4_FS_ENCRYPTION],[
+			AC_DEFINE(CONFIG_LDISKFS_FS_ENCRYPTION, 1,
+				[enable encryption for ldiskfs])
+		])
+	])
+]) # LB_EXT4_HAVE_I_CRYPT_INFO
 
 #
-# LB_LDISKFS_MAP_BLOCKS
+# LB_LDISKFS_JOURNAL_ENSURE_CREDITS
 #
-# Since 2.6.35 brought ext4_map_blocks() for IO.
-# We just check this function whether existed.
-# it must be exported by ldiskfs patches.
+# kernel 4.18.0-240.1.1.el8 and
+# kernel 5.4 commit a413036791d040e33badcc634453a4d0c0705499
 #
-AC_DEFUN([LB_LDISKFS_MAP_BLOCKS], [
-LB_CHECK_COMPILE([if kernel has ext4_map_blocks],
-ext4_map_blocks, [
-	#include <linux/fs.h>
-	#include "$EXT4_SRC_DIR/ext4.h"
-],[
-	ext4_map_blocks(NULL, NULL, NULL, 0);
-],[
-	AC_DEFINE(HAVE_LDISKFS_MAP_BLOCKS, 1, [kernel has ext4_map_blocks])
-])
+# ext4_journal_ensure_credits was introduced to ensure given handle
+# has at least requested amount of credits available, and possibly
+# restarting transaction if needed.
+#
+AC_DEFUN([LB_SRC_LDISKFS_JOURNAL_ENSURE_CREDITS], [
+	LB2_LINUX_TEST_SRC([ext4_journal_ensure_credits], [
+		#include "$EXT4_SRC_DIR/ext4_jbd2.h"
+		int __ext4_journal_ensure_credits(handle_t *handle, int check_cred,
+			int extend_cred, int revoke_cred) { return 0; }
+	],[
+		ext4_journal_ensure_credits(NULL, 0, 0);
+	],[-Werror],[],[__ext4_journal_ensure_credits])
 ])
+AC_DEFUN([LB_LDISKFS_JOURNAL_ENSURE_CREDITS], [
+	LB2_MSG_LINUX_TEST_RESULT([if 'ext4_journal_ensure_credits' exists],
+	[ext4_journal_ensure_credits], [
+		AC_DEFINE(HAVE_LDISKFS_JOURNAL_ENSURE_CREDITS, 1,
+			['ext4_journal_ensure_credits' exists])
+	])
+]) # LB_LDISKFS_JOURNAL_ENSURE_CREDITS
 
 #
-# LB_EXT4_BREAD_4ARGS
+# LB_LDISKFS_IGET_HAS_FLAGS_ARG
 #
-# 3.18 ext4_bread has 4 arguments
+# kernel 4.19 commit 8a363970d1dc38c4ec4ad575c862f776f468d057
+# ext4_iget changed to a macro with 3 args was function with 2 args
 #
-AC_DEFUN([LB_EXT4_BREAD_4ARGS], [
-LB_CHECK_COMPILE([if ext4_bread takes 4 arguments],
-ext4_bread, [
-	#include <linux/fs.h>
-	#include "$EXT4_SRC_DIR/ext4.h"
-],[
-	ext4_bread(NULL, NULL, 0, 0);
-],[
-	AC_DEFINE(HAVE_EXT4_BREAD_4ARGS, 1, [ext4_bread takes 4 arguments])
+AC_DEFUN([LB_SRC_LDISKFS_IGET_HAS_FLAGS_ARG], [
+	LB2_LINUX_TEST_SRC([ext4_iget_3args], [
+		#include <linux/fs.h>
+		#include "$EXT4_SRC_DIR/ext4.h"
+	],[
+		int f = EXT4_IGET_SPECIAL;
+		(void)f;
+	],[-Werror])
 ])
-]) # LB_EXT4_BREAD_4ARGS
+AC_DEFUN([LB_LDISKFS_IGET_HAS_FLAGS_ARG], [
+	LB2_MSG_LINUX_TEST_RESULT([if ldiskfs_iget takes a flags argument],
+	[ext4_iget_3args], [
+		AC_DEFINE(HAVE_LDISKFS_IGET_WITH_FLAGS, 1,
+			[if ldiskfs_iget takes a flags argument])
+	])
+]) # LB_LDISKFS_IGET_HAS_FLAGS_ARG
 
 #
 # LDISKFS_AC_PATCH_PROGRAM
@@ -149,7 +345,7 @@ ext4_bread, [
 #
 AC_DEFUN([LDISKFS_AC_PATCH_PROGRAM], [
 	AC_ARG_ENABLE([quilt],
-		[AC_HELP_STRING([--disable-quilt],
+		[AS_HELP_STRING([--disable-quilt],
 			[disable use of quilt for ldiskfs])],
 		[AS_IF([test "x$enableval" = xno],
 			[use_quilt=no],
@@ -175,6 +371,195 @@ AC_DEFUN([LDISKFS_AC_PATCH_PROGRAM], [
 ]) # LDISKFS_AC_PATCH_PROGRAM
 
 #
+# LB_LDISKFS_FIND_ENTRY_LOCKED_EXISTS
+#
+# kernel 5.2 commit 8a363970d1dc38c4ec4ad575c862f776f468d057
+# ext4: avoid declaring fs inconsistent due to invalid file handles
+# __ext4_find_entry became a helper function for ext4_find_entry
+# conflicting with previous ldiskfs patches.
+# ldiskfs patches map ext4_find_entry to ldiskfs_find_entry_locked to
+# avoid conflicting with __ext4_find_entry
+#
+# When the following check succeeds __ext4_find_entry helper is not
+# used.
+#
+AC_DEFUN([LB_SRC_LDISKFS_FIND_ENTRY_LOCKED_EXISTS], [
+	LB2_LINUX_TEST_SRC([ldiskfs_find_entry_locked], [
+		#include <linux/fs.h>
+		#include "$EXT4_SRC_DIR/ext4.h"
+		#include "$EXT4_SRC_DIR/namei.c"
+
+		static int __ext4_find_entry(void) { return 0; }
+	],[
+		int x = __ext4_find_entry();
+		(void)x;
+	],[-Werror])
+])
+AC_DEFUN([LB_LDISKFS_FIND_ENTRY_LOCKED_EXISTS], [
+	LB2_MSG_LINUX_TEST_RESULT([if __ldiskfs_find_entry is available],
+	[ldiskfs_find_entry_locked], [
+		AC_DEFINE(HAVE___LDISKFS_FIND_ENTRY, 1,
+			[if __ldiskfs_find_entry is available])
+	])
+]) # LB_LDISKFS_FIND_ENTRY_LOCKED_EXISTS
+
+#
+# LB_LDISKFSFS_DIRHASH_WANTS_DIR
+#
+# kernel 5.2 commit 8a363970d1dc38c4ec4ad575c862f776f468d057
+# ext4fs_dirhash UNICODE support
+#
+AC_DEFUN([LB_SRC_LDISKFSFS_DIRHASH_WANTS_DIR], [
+	LB2_LINUX_TEST_SRC([ext4fs_dirhash], [
+		#include <linux/fs.h>
+		#include "$EXT4_SRC_DIR/ext4.h"
+	],[
+		int f = ext4fs_dirhash(NULL, NULL, 0, NULL);
+		(void)f;
+	],[-Werror],[],[ext4fs_dirhash])
+])
+AC_DEFUN([LB_LDISKFSFS_DIRHASH_WANTS_DIR], [
+	LB2_MSG_LINUX_TEST_RESULT([if ldiskfsfs_dirhash takes an inode argument],
+	[ext4fs_dirhash], [
+		AC_DEFINE(HAVE_LDISKFSFS_DIRHASH_WITH_DIR, 1,
+			[if ldiskfsfs_dirhash takes an inode argument])
+	])
+]) # LB_LDISKFSFS_DIRHASH_WANTS_DIR
+
+#
+# LB_JBD2_H_TOTAL_CREDITS
+#
+# kernel 5.5 commit 933f1c1e0b75bbc29730eef07c9e196c6dfd37e5
+# jbd2: Reserve space for revoke descriptor blocks
+#
+AC_DEFUN([LB_SRC_JBD2_H_TOTAL_CREDITS], [
+	LB2_LINUX_TEST_SRC([handle_t_h_revoke_credits], [
+		#include <linux/jbd2.h>
+	],[
+		int x = offsetof(struct jbd2_journal_handle, h_total_credits);
+		(void)x;
+	],[-Werror])
+])
+AC_DEFUN([LB_JBD2_H_TOTAL_CREDITS], [
+	LB2_MSG_LINUX_TEST_RESULT([if struct jbd2_journal_handle has h_total_credits member],
+	[handle_t_h_revoke_credits], [
+		AC_DEFINE(HAVE_JOURNAL_TOTAL_CREDITS, 1,
+			[struct jbd2_journal_handle has h_total_credits member])
+	])
+]) # LB_JBD2_H_TOTAL_CREDITS
+
+#
+# LB_EXT4_INC_DEC_COUNT_2ARGS
+#
+# Linux v5.9-rc7-8-g15ed2851b0f4
+# ext4: remove unused argument from ext4_(inc|dec)_count
+#
+AC_DEFUN([LB_EXT4_INC_DEC_COUNT_2ARGS], [
+	AC_MSG_CHECKING([if ext4_(inc|dec)_count() have 2 arguments])
+	AS_IF([grep -q -E 'void ext4_inc_count.handle_t \*handle' $EXT4_SRC_DIR/namei.c],[
+		AC_DEFINE(HAVE_EXT4_INC_DEC_COUNT_2ARGS, 1,
+			[ext4_(inc|dec)_count() has 2 arguments])
+		AC_MSG_RESULT(yes)
+	],[
+		AC_MSG_RESULT(no)
+	])
+]) # LB_EXT4_INC_DEC_COUNT_2ARGS
+
+#
+# LB_JBD2_JOURNAL_GET_MAX_TXN_BUFS
+# Linux commit v5.10-rc2-9-gede7dc7fa0af
+#  jbd2: rename j_maxlen to j_total_len and add jbd2_journal_max_txn_bufs
+#
+AC_DEFUN([LB_SRC_JBD2_JOURNAL_GET_MAX_TXN_BUFS], [
+	LB2_LINUX_TEST_SRC([jbd2_journal_get_max_txn_bufs], [
+		#include <linux/jbd2.h>
+	],[
+		journal_t *journal = NULL;
+		int x = jbd2_journal_get_max_txn_bufs(journal);
+		(void)x;
+	],[-Werror],[],[])
+])
+AC_DEFUN([LB_JBD2_JOURNAL_GET_MAX_TXN_BUFS], [
+	LB2_MSG_LINUX_TEST_RESULT([if jbd2_journal_get_max_txn_bufs is available],
+	[jbd2_journal_get_max_txn_bufs], [
+		AC_DEFINE(HAVE_JBD2_JOURNAL_GET_MAX_TXN_BUFS, 1,
+			[if jbd2_journal_get_max_txn_bufs is available])
+	])
+]) # LB_JBD2_JOURNAL_GET_MAX_TXN_BUFS
+
+#
+# LB_EXT4_JOURNAL_GET_WRITE_ACCESS_4A
+#
+# Linux v5.14-rc2-19-g188c299e2a26
+#    ext4: Support for checksumming from journal triggers
+#
+AC_DEFUN([LB_EXT4_JOURNAL_GET_WRITE_ACCESS_4A], [
+tmp_flags="$EXTRA_KCFLAGS"
+EXTRA_KCFLAGS="-Werror"
+LB_CHECK_COMPILE([if jbd2_journal_get_max_txn_bufs is available],
+ext4_journal_get_write_access, [
+	#include <linux/fs.h>
+	#include "$EXT4_SRC_DIR/ext4.h"
+	#include "$EXT4_SRC_DIR/ext4_jbd2.h"
+
+	int __ext4_journal_get_write_access(const char *where, unsigned int line,
+				    handle_t *handle,
+				    struct super_block *sb,
+				    struct buffer_head *bh,
+				    enum ext4_journal_trigger_type trigger_type)
+	{
+		return 0;
+	}
+],[
+	handle_t *handle = NULL;
+	struct super_block *sb = NULL;
+	struct buffer_head *bh = NULL;
+	enum ext4_journal_trigger_type trigger_type = EXT4_JTR_NONE;
+	int err = ext4_journal_get_write_access(handle, sb, bh, trigger_type);
+
+	(void)err;
+],[
+	AC_DEFINE(HAVE_EXT4_JOURNAL_GET_WRITE_ACCESS_4ARGS, 1,
+		[ext4_journal_get_write_access() has 4 arguments])
+])
+EXTRA_KCFLAGS="$tmp_flags"
+]) # LB_EXT4_JOURNAL_GET_WRITE_ACCESS_4A
+
+#
+# LB_HAVE_INODE_LOCK_SHARED
+#
+AC_DEFUN([LB_HAVE_INODE_LOCK_SHARED], [
+LB_CHECK_COMPILE([if inode_lock_shared() defined],
+inode_lock_shared, [
+	#include <linux/fs.h>
+],[
+	struct inode i;
+
+	inode_lock_shared(&i);
+],[
+	AC_DEFINE(HAVE_INODE_LOCK_SHARED, 1,
+		[inode_lock_shared() defined])
+])
+]) # LB_HAVE_INODE_LOCK_SHARED
+
+#
+# LB_HAVE_INODE_IVERSION
+#
+AC_DEFUN([LB_HAVE_INODE_IVERSION], [
+LB_CHECK_COMPILE([if iversion primitives defined],
+inode_set_iversion, [
+	#include <linux/iversion.h>
+],[
+	struct inode i;
+
+	inode_set_iversion(&i, 0);
+],[
+	AC_DEFINE(HAVE_INODE_IVERSION, 1,
+		[iversion primitives defined])
+])
+]) # LB_HAVE_INODE_IVERSION
+
+#
 # LB_CONFIG_LDISKFS
 #
 AC_DEFUN([LB_CONFIG_LDISKFS], [
@@ -213,20 +598,22 @@ AS_IF([test x$enable_ldiskfs != xno],[
 	# set is available for the detected kernel.  For now, we just always
 	# set it to "yes".
 	AS_IF([test x$enable_ldiskfs = xmaybe], [enable_ldiskfs=yes])
+	AC_SUBST(ENABLE_LDISKFS, yes)
 
 	LDISKFS_LINUX_SERIES
 	LDISKFS_AC_PATCH_PROGRAM
-	LB_EXT_FREE_BLOCKS_WITH_BUFFER_HEAD
-	LB_EXT_PBLOCK
-	LB_EXT4_JOURNAL_START_3ARGS
-	LB_LDISKFS_MAP_BLOCKS
-	LB_EXT4_BREAD_4ARGS
+	LB_EXT4_INC_DEC_COUNT_2ARGS
+	LB_EXT4_JOURNAL_GET_WRITE_ACCESS_4A
+	LB_HAVE_INODE_LOCK_SHARED
+	LB_HAVE_INODE_IVERSION
 	AC_DEFINE(CONFIG_LDISKFS_FS_POSIX_ACL, 1, [posix acls for ldiskfs])
 	AC_DEFINE(CONFIG_LDISKFS_FS_SECURITY, 1, [fs security for ldiskfs])
 	AC_DEFINE(CONFIG_LDISKFS_FS_XATTR, 1, [extened attributes for ldiskfs])
 	AC_DEFINE(CONFIG_LDISKFS_FS_RW, 1, [enable rw access for ldiskfs])
 	AC_SUBST(LDISKFS_SUBDIR, ldiskfs)
 	AC_DEFINE(HAVE_LDISKFS_OSD, 1, Enable ldiskfs osd)
+], [
+	AC_SUBST(ENABLE_LDISKFS, no)
 ])
 
 AC_MSG_CHECKING([whether to build ldiskfs])
@@ -235,6 +622,36 @@ AC_MSG_RESULT([$enable_ldiskfs])
 AM_CONDITIONAL([LDISKFS_ENABLED], [test x$enable_ldiskfs = xyes])
 ]) # LB_CONFIG_LDISKFS
 
+AS_IF([test x$enable_ldiskfs != xno],[
+	AC_DEFUN([LB_EXT4_SRC_DIR_SRC],[
+		LB_SRC_EXT4_BREAD_4ARGS
+		LB_SRC_EXT4_HAVE_INFO_DQUOT
+		LB_SRC_EXT4_HAVE_I_CRYPT_INFO
+		LB_SRC_LDISKFS_JOURNAL_ENSURE_CREDITS
+		LB_SRC_LDISKFS_IGET_HAS_FLAGS_ARG
+		LB_SRC_LDISKFS_FIND_ENTRY_LOCKED_EXISTS
+		LB_SRC_LDISKFSFS_DIRHASH_WANTS_DIR
+		LB_SRC_JBD2_H_TOTAL_CREDITS
+		LB_SRC_JBD2_JOURNAL_GET_MAX_TXN_BUFS
+		LB2_SRC_CHECK_CONFIG_IM([FS_ENCRYPTION])
+	])
+	AC_DEFUN([LB_EXT4_SRC_DIR_RESULTS], [
+		LB_EXT4_BREAD_4ARGS
+		LB_EXT4_HAVE_INFO_DQUOT
+		LB_EXT4_HAVE_I_CRYPT_INFO
+		LB_LDISKFS_JOURNAL_ENSURE_CREDITS
+		LB_LDISKFS_IGET_HAS_FLAGS_ARG
+		LB_LDISKFS_FIND_ENTRY_LOCKED_EXISTS
+		LB_LDISKFSFS_DIRHASH_WANTS_DIR
+		LB_JBD2_H_TOTAL_CREDITS
+		LB_JBD2_JOURNAL_GET_MAX_TXN_BUFS
+		LB2_TEST_CHECK_CONFIG_IM([FS_ENCRYPTION], [
+			EXT4_CRYPTO=],[
+			EXT4_CRYPTO='%/crypto.c'])
+	])
+	AC_SUBST(EXT4_CRYPTO)
+])
+
 #
 # LB_VALIDATE_EXT4_SRC_DIR
 #
@@ -292,11 +709,21 @@ AS_IF([test -e "$linux_src/fs/ext4/super.c"], [
 	EXT4_SRC_DIR="$linux_src/fs/ext4"
 ], [
 	# Kernel ext source provided by kernel-debuginfo-common package
-	linux_src=$(ls -1d /usr/src/debug/*/linux-${LINUXRELEASE%.*}* \
+	# that extracted to $LINUX
+	linux_src=$(ls -1d $linux_src/../../debug/*/linux-${LINUXRELEASE%.*}* \
 		2>/dev/null | tail -1)
-	AS_IF([test -e "$linux_src/fs/ext4/super.c"],
-		[EXT4_SRC_DIR="$linux_src/fs/ext4"],
-		[EXT4_SRC_DIR=""])
+	AS_IF([test -e "$linux_src/fs/ext4/super.c"], [
+		EXT4_SRC_DIR="$linux_src/fs/ext4"
+	], [
+		# Kernel ext source provided by kernel-debuginfo-common package
+		linux_src=$(ls -1d /usr/src/debug/*/linux-${LINUXRELEASE%.*}* \
+			2>/dev/null | tail -1)
+		AS_IF([test -e "$linux_src/fs/ext4/super.c"], [
+			EXT4_SRC_DIR="$linux_src/fs/ext4"
+		], [
+			EXT4_SRC_DIR=""
+		])
+	])
 ])
 AC_MSG_RESULT([$EXT4_SRC_DIR])
 AC_SUBST(EXT4_SRC_DIR)
@@ -312,7 +739,7 @@ LB_VALIDATE_EXT4_SRC_DIR
 AC_DEFUN([LB_DEFINE_E2FSPROGS_NAMES], [
 AC_MSG_CHECKING([whether to use alternate names for e2fsprogs])
 AC_ARG_WITH([ldiskfsprogs],
-	AC_HELP_STRING([--with-ldiskfsprogs],
+	AS_HELP_STRING([--with-ldiskfsprogs],
 		[use alternate names for ldiskfs-enabled e2fsprogs]),
 	[], [withval="no"])