diff --git a/rpm/generic/zfs-dkms.spec.in b/rpm/generic/zfs-dkms.spec.in
index 22beb6b68ae3..23c3ed6ff408 100644
--- a/rpm/generic/zfs-dkms.spec.in
+++ b/rpm/generic/zfs-dkms.spec.in
@@ -1,113 +1,76 @@
 %{?!packager: %define packager Brian Behlendorf <behlendorf1@llnl.gov>}
 
 %if ! 0%{?rhel}%{?fedora}%{?mageia}%{?suse_version}%{?openEuler}
 %define not_rpm 1
 %endif
 
 # Exclude input files from mangling
 %global __brp_mangle_shebangs_exclude_from ^/usr/src/.*$
 
 %define module  @PACKAGE@
 %define mkconf  scripts/dkms.mkconf
 
 Name:           %{module}-dkms
 
 Version:        @VERSION@
 Release:        @RELEASE@%{?dist}
 Summary:        Kernel module(s) (dkms)
 
 Group:          System Environment/Kernel
 License:        @ZFS_META_LICENSE@
 URL:            https://github.com/openzfs/zfs
 Source0:        %{module}-%{version}.tar.gz
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildArch:      noarch
 
 Requires:       dkms >= 2.2.0.3
 Requires(post): dkms >= 2.2.0.3
 Requires(preun): dkms >= 2.2.0.3
 Requires:       gcc, make, perl, diffutils
 Requires(post): gcc, make, perl, diffutils
 %if 0%{?rhel}%{?fedora}%{?mageia}%{?suse_version}%{?openEuler}
 Requires:       kernel-devel >= @ZFS_META_KVER_MIN@, kernel-devel <= @ZFS_META_KVER_MAX@.999
 Requires(post): kernel-devel >= @ZFS_META_KVER_MIN@, kernel-devel <= @ZFS_META_KVER_MAX@.999
 Obsoletes:      spl-dkms <= %{version}
 %endif
 Provides:       %{module}-kmod = %{version}
 AutoReqProv:    no
 
 %if (0%{?fedora}%{?suse_version}%{?openEuler}) || (0%{?rhel} && 0%{?rhel} < 9)
 # We don't directly use it, but if this isn't installed, rpmbuild as root can
 # crash+corrupt rpmdb
 # See issue #12071
 BuildRequires:  ncompress
 %endif
 
 %description
 This package contains the dkms ZFS kernel modules.
 
 %prep
 %setup -q -n %{module}-%{version}
 
 %build
 %{mkconf} -n %{module} -v %{version} -f dkms.conf
 
 %install
 if [ "$RPM_BUILD_ROOT" != "/" ]; then
     rm -rf $RPM_BUILD_ROOT
 fi
 mkdir -p $RPM_BUILD_ROOT/usr/src/
 cp -rf ${RPM_BUILD_DIR}/%{module}-%{version} $RPM_BUILD_ROOT/usr/src/
 
 %clean
 if [ "$RPM_BUILD_ROOT" != "/" ]; then
     rm -rf $RPM_BUILD_ROOT
 fi
 
 %files
 %defattr(-,root,root)
 /usr/src/%{module}-%{version}
 
-%post
-for POSTINST in /usr/lib/dkms/common.postinst; do
-    if [ -f $POSTINST ]; then
-        $POSTINST %{module} %{version}
-        exit $?
-    fi
-    echo "WARNING: $POSTINST does not exist."
-done
-echo -e "ERROR: DKMS version is too old and %{module} was not"
-echo -e "built with legacy DKMS support."
-echo -e "You must either rebuild %{module} with legacy postinst"
-echo -e "support or upgrade DKMS to a more current version."
-exit 1
-
 %preun
-# Are we doing an upgrade?
-if [ "$1" = "1" -o "$1" = "upgrade" ] ; then
-	# Yes we are.  Are we upgrading to a new ZFS version?
-	NEWEST_VER=$(dkms status zfs | tr -d , | sort -r -V | awk '/installed/{print $2; exit}')
-	if [ "$NEWEST_VER" != "%{version}" ] ; then
-		# Yes, it's a new ZFS version.  We'll uninstall the old module
-		# later on in this script.
-		true
-	else
-		# No, it's probably an upgrade of the same ZFS version
-		# to a new distro (zfs-dkms-0.7.12.fc28->zfs-dkms-0.7.12.fc29).
-		# Don't remove our modules, since the rebuild for the new
-		# distro will automatically delete the old modules.
-		exit 0
-	fi
-fi
+dkms remove -m %{module} -v %{version} --all
+
+%posttrans
+/usr/lib/dkms/common.postinst %{module} %{version}
 
-# If we're here then we're doing an uninstall (not upgrade).
-CONFIG_H="/var/lib/dkms/%{module}/%{version}/*/*/%{module}_config.h"
-SPEC_META_ALIAS="@PACKAGE@-@VERSION@-@RELEASE@"
-DKMS_META_ALIAS=`cat $CONFIG_H 2>/dev/null |
-    awk -F'"' '/META_ALIAS\s+"/ { print $2; exit 0 }'`
-if [ "$SPEC_META_ALIAS" = "$DKMS_META_ALIAS" ]; then
-    echo -e
-    echo -e "Uninstall of %{module} module ($SPEC_META_ALIAS) beginning:"
-    dkms remove -m %{module} -v %{version} --all %{!?not_rpm:--rpm_safe_upgrade}
-fi
-exit 0