disable cpu isolcpus

hc

2023-12-09 958e46acc8e900e8569dd467c1af9b8d2d019394

 kernel/fs/fscache/main.c
..
..
@@ -1,12 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /* General filesystem local caching manager
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  *
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  * Copyright (C) 2004-2007 Red Hat, Inc. All Rights Reserved.
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  * Written by David Howells (dhowells@redhat.com)
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * as published by the Free Software Foundation; either version
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- * 2 of the License, or (at your option) any later version.
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  */
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7
 
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 #define FSCACHE_DEBUG_LEVEL CACHE
..
..
@@ -45,8 +41,6 @@
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 struct workqueue_struct *fscache_object_wq;
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 struct workqueue_struct *fscache_op_wq;
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43
 
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-DEFINE_PER_CPU(wait_queue_head_t, fscache_object_cong_wait);
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-
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 /* these values serve as lower bounds, will be adjusted in fscache_init() */
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 static unsigned fscache_object_max_active = 4;
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 static unsigned fscache_op_max_active = 2;
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@@ -55,8 +49,7 @@
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 static struct ctl_table_header *fscache_sysctl_header;
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50
 
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 static int fscache_max_active_sysctl(struct ctl_table *table, int write,
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-				     void __user *buffer,
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-				     size_t *lenp, loff_t *ppos)
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+				     void *buffer, size_t *lenp, loff_t *ppos)
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 {
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 	struct workqueue_struct **wqp = table->extra1;
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 	unsigned int *datap = table->data;
..
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@@ -143,7 +136,6 @@
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 static int __init fscache_init(void)
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 {
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 	unsigned int nr_cpus = num_possible_cpus();
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-	unsigned int cpu;
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 	int ret;
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140
 
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 	fscache_object_max_active =
..
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@@ -166,9 +158,6 @@
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 	if (!fscache_op_wq)
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 		goto error_op_wq;
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-	for_each_possible_cpu(cpu)
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-		init_waitqueue_head(&per_cpu(fscache_object_cong_wait, cpu));
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-
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 	ret = fscache_proc_init();
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 	if (ret < 0)
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 		goto error_proc;
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@@ -188,7 +177,6 @@
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 		ret = -ENOMEM;
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 		goto error_cookie_jar;
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 	}
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-	fscache_cookie_init();
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180
 
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 	fscache_root = kobject_create_and_add("fscache", kernel_kobj);
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 	if (!fscache_root)