diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index c50885a0d..f616d1de0 100755
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2820,16 +2820,6 @@ static struct ctl_table kern_table[] = {
 	{ }
 };
 
-static int proc_swappiness_handler(struct ctl_table *table, int write,
-				   void __user *buffer, size_t *lenp,
-				   loff_t *ppos)
-{
-	if (task_is_booster(current))
-		return 0;
-
-	return proc_dointvec_minmax(table, write, buffer, lenp, ppos);
-}
-
 static struct ctl_table vm_table[] = {
 	{
 		.procname	= "overcommit_memory",
@@ -2931,7 +2921,7 @@ static struct ctl_table vm_table[] = {
 		.data		= &dirty_expire_interval,
 		.maxlen		= sizeof(dirty_expire_interval),
 		.mode		= 0644,
-		.proc_handler	= proc_swappiness_handler,
+		.proc_handler	= proc_dointvec_minmax,
 		.extra1		= SYSCTL_ZERO,
 	},
 	{
@@ -2947,7 +2937,7 @@ static struct ctl_table vm_table[] = {
 		.data		= &vm_swappiness,
 		.maxlen		= sizeof(vm_swappiness),
 		.mode		= 0644,
-		.proc_handler	= proc_swappiness_handler,
+		.proc_handler	= proc_dointvec_minmax,
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_TWO_HUNDRED,
 	},
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 7afe362b2..43615aaf3 100755
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -38,7 +38,6 @@
 #include <linux/sched/rt.h>
 #include <linux/sched/signal.h>
 #include <linux/mm_inline.h>
-#include <linux/binfmts.h>
 #include <trace/events/writeback.h>
 
 #include "internal.h"
@@ -529,9 +528,6 @@ int dirty_background_ratio_handler(struct ctl_table *table, int write,
 {
 	int ret;
 
-	if (task_is_booster(current))
-		return 0;
-
 	ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
 	if (ret == 0 && write)
 		dirty_background_bytes = 0;
@@ -544,9 +540,6 @@ int dirty_background_bytes_handler(struct ctl_table *table, int write,
 	int ret;
 	unsigned long old_bytes = dirty_background_bytes;
 
-	if (task_is_booster(current))
-		return 0;
-
 	ret = proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
 	if (ret == 0 && write) {
 		if (DIV_ROUND_UP(dirty_background_bytes, PAGE_SIZE) >
@@ -565,9 +558,6 @@ int dirty_ratio_handler(struct ctl_table *table, int write, void *buffer,
 	int old_ratio = vm_dirty_ratio;
 	int ret;
 
-	if (task_is_booster(current))
-		return 0;
-
 	ret = proc_dointvec_minmax(table, write, buffer, lenp, ppos);
 	if (ret == 0 && write && vm_dirty_ratio != old_ratio) {
 		writeback_set_ratelimit();
@@ -582,9 +572,6 @@ int dirty_bytes_handler(struct ctl_table *table, int write,
 	unsigned long old_bytes = vm_dirty_bytes;
 	int ret;
 
-	if (task_is_booster(current))
-		return 0;
-
 	ret = proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
 	if (ret == 0 && write && vm_dirty_bytes != old_bytes) {
 		if (DIV_ROUND_UP(vm_dirty_bytes, PAGE_SIZE) > UINT_MAX) {
@@ -2030,9 +2017,6 @@ int dirty_writeback_centisecs_handler(struct ctl_table *table, int write,
 	unsigned int old_interval = dirty_writeback_interval;
 	int ret;
 
-	if (task_is_booster(current))
-		return 0;
-
 	ret = proc_dointvec(table, write, buffer, length, ppos);
 
 	/*