diff --git a/0001-udev-use-bfq-as-the-default-scheduler.patch b/0001-udev-use-bfq-as-the-default-scheduler.patch
deleted file mode 100644
index bbb294b37e289629797c348265a79e72c6c2b7a3..0000000000000000000000000000000000000000
--- a/0001-udev-use-bfq-as-the-default-scheduler.patch
+++ /dev/null
@@ -1,40 +0,0 @@
-From 5ab4d083dbe0a1ae095875c4af6ac26749b67211 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
-Date: Wed, 14 Aug 2019 15:57:42 +0200
-Subject: [PATCH] udev: use bfq as the default scheduler
-
-As requested in https://bugzilla.redhat.com/show_bug.cgi?id=1738828.
-Test results are that bfq seems to behave better and more consistently on
-typical hardware. The kernel does not have a configuration option to set
-the default scheduler, and it currently needs to be set by userspace.
-
-See the bug for more discussion and links.
----
- rules/60-block-scheduler.rules | 5 +++++
- rules/meson.build              | 1 +
- 2 files changed, 6 insertions(+)
- create mode 100644 rules/60-block-scheduler.rules
-
-diff --git a/rules/60-block-scheduler.rules b/rules/60-block-scheduler.rules
-new file mode 100644
-index 00000000000..480b941761f
---- /dev/null
-+++ b/rules/60-block-scheduler.rules
-@@ -0,0 +1,5 @@
-+# do not edit this file, it will be overwritten on update
-+
-+ACTION=="add", SUBSYSTEM=="block", \
-+  KERNEL=="mmcblk*[0-9]|msblk*[0-9]|mspblk*[0-9]|sd*[!0-9]|sr*", \
-+  ATTR{queue/scheduler}="bfq"
-diff --git a/rules/meson.build b/rules/meson.build
-index b6a32ba77e2..1da958b4d46 100644
---- a/rules/meson.build
-+++ b/rules/meson.build
-@@ -2,6 +2,7 @@
- 
- rules = files('''
-         60-block.rules
-+        60-block-scheduler.rules
-         60-cdrom_id.rules
-         60-drm.rules
-         60-evdev.rules
diff --git a/rules-add-the-rule-that-adds-elevator-kernel-command.patch b/rules-add-the-rule-that-adds-elevator-kernel-command.patch
index dd20b73f0b16b12f0cafbbdaa7aca5f06c369cb4..2e5faab8f39e61ed02d64df74355e2df6a8ba420 100644
--- a/rules-add-the-rule-that-adds-elevator-kernel-command.patch
+++ b/rules-add-the-rule-that-adds-elevator-kernel-command.patch
@@ -11,7 +11,7 @@ Resolves: #1670126
  1 file changed, 1 insertion(+)
 
 diff --git a/rules/meson.build b/rules/meson.build
-index 1da958b..043313a 100644
+index 0fb5c6a..a2dbf2b 100644
 --- a/rules/meson.build
 +++ b/rules/meson.build
 @@ -1,6 +1,7 @@
@@ -20,8 +20,8 @@ index 1da958b..043313a 100644
  rules = files('''
 +        40-elevator.rules
          60-block.rules
-         60-block-scheduler.rules
          60-cdrom_id.rules
+         60-drm.rules
 -- 
-2.19.1
+2.23.0
 
diff --git a/systemd.spec b/systemd.spec
index 6a90b190e3c3711068666a205c730312a2bc78f3..28e6d5090c9f64efd24ec792755f1e527b9cdc96 100644
--- a/systemd.spec
+++ b/systemd.spec
@@ -16,7 +16,7 @@
 Name:           systemd
 Url:            https://www.freedesktop.org/wiki/Software/systemd
 Version:        243
-Release:        26
+Release:        27
 License:        MIT and LGPLv2+ and GPLv2+
 Summary:        System and Service Manager
 
@@ -44,7 +44,6 @@ Source105:	rule_generator.functions
 Source106:	write_net_rules
 Source107:	detect_virt
 
-Patch0001:      0001-udev-use-bfq-as-the-default-scheduler.patch 
 Patch0002:      0001-udev-ignore-error-caused-by-device-disconnection.patch
 Patch0003:      0001-core-dont-check-error-parameter-of-get_name_owner_handler.patch
 Patch0004:      0001-core-dont-check-potentially-NULL-error.patch
@@ -1409,7 +1408,6 @@ fi
 %{_udevrulesdir}/60-persistent-v4l.rules
 %{_udevrulesdir}/70-joystick.rules
 %{_udevrulesdir}/70-power-switch.rules
-%{_udevrulesdir}/60-block-scheduler.rules
 %{_udevrulesdir}/60-persistent-storage.rules
 %{_udevrulesdir}/80-net-setup-link.rules
 %{_udevrulesdir}/60-evdev.rules
@@ -1506,6 +1504,13 @@ fi
 %exclude /usr/share/man/man3/*
 
 %changelog
+* Mon Nov 23 2020 openEuler Buildteam <buildteam@openeuler.org> - 243-27
+- Type:enhancement
+- ID:NA
+- SUG:NA
+- DESC:add elevator= kernel command line parameter and don't enable bfq
+       by default
+
 * Tue Jul 7 2020 openEuler Buildteam <buildteam@openeuler.org> - 243-26
 - Type:enhancement
 - ID:NA