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From: Luis Chamberlain <mcgrof@kernel.org>
To: akpm@linux-foundation.org, keescook@chromium.org,
	yzaikin@google.com, nixiaoming@huawei.com, ebiederm@xmission.com,
	peterz@infradead.org, gregkh@linuxfoundation.org, pjt@google.com,
	liu.hailong6@zte.com.cn, andriy.shevchenko@linux.intel.com,
	sre@kernel.org, penguin-kernel@i-love.sakura.ne.jp,
	pmladek@suse.com, senozhatsky@chromium.org, wangqing@vivo.com,
	bcrl@kvack.org, viro@zeniv.linux.org.uk, jack@suse.cz,
	amir73il@gmail.com
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
	Luis Chamberlain <mcgrof@kernel.org>
Subject: [PATCH v2 7/9] sysctl: use SYSCTL_ZERO to replace some static int zero uses
Date: Tue, 23 Nov 2021 12:23:45 -0800	[thread overview]
Message-ID: <20211123202347.818157-8-mcgrof@kernel.org> (raw)
In-Reply-To: <20211123202347.818157-1-mcgrof@kernel.org>

From: Xiaoming Ni <nixiaoming@huawei.com>

Use the variable SYSCTL_ZERO to replace some static int boundary
variables with a value of 0 (minolduid, min_extfrag_threshold,
min_wakeup_granularity_ns).

Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 kernel/sysctl.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 03bbd26d4df0..597ab5ad4879 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -122,7 +122,7 @@ static const unsigned long dirty_bytes_min = 2 * PAGE_SIZE;
 
 /* this is needed for the proc_dointvec_minmax for [fs_]overflow UID and GID */
 static const int maxolduid = 65535;
-static const int minolduid;
+/* minolduid is SYSCTL_ZERO */
 
 static const int ngroups_max = NGROUPS_MAX;
 static const int cap_last_cap = CAP_LAST_CAP;
@@ -170,7 +170,7 @@ int sysctl_legacy_va_layout;
 #endif
 
 #ifdef CONFIG_COMPACTION
-static const int min_extfrag_threshold;
+/* min_extfrag_threshold is SYSCTL_ZERO */;
 static const int max_extfrag_threshold = 1000;
 #endif
 
@@ -2175,7 +2175,7 @@ static struct ctl_table kern_table[] = {
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= (void *)&minolduid,
+		.extra1		= SYSCTL_ZERO,
 		.extra2		= (void *)&maxolduid,
 	},
 	{
@@ -2184,7 +2184,7 @@ static struct ctl_table kern_table[] = {
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= (void *)&minolduid,
+		.extra1		= SYSCTL_ZERO,
 		.extra2		= (void *)&maxolduid,
 	},
 #ifdef CONFIG_S390
@@ -2758,7 +2758,7 @@ static struct ctl_table vm_table[] = {
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= (void *)&min_extfrag_threshold,
+		.extra1		= SYSCTL_ZERO,
 		.extra2		= (void *)&max_extfrag_threshold,
 	},
 	{
@@ -3070,7 +3070,7 @@ static struct ctl_table fs_table[] = {
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= (void *)&minolduid,
+		.extra1		= SYSCTL_ZERO,
 		.extra2		= (void *)&maxolduid,
 	},
 	{
@@ -3079,7 +3079,7 @@ static struct ctl_table fs_table[] = {
 		.maxlen		= sizeof(int),
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_minmax,
-		.extra1		= (void *)&minolduid,
+		.extra1		= SYSCTL_ZERO,
 		.extra2		= (void *)&maxolduid,
 	},
 #ifdef CONFIG_FILE_LOCKING
-- 
2.33.0


  parent reply	other threads:[~2021-11-23 20:24 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-23 20:23 [PATCH v2 0/9] sysctl: first set of kernel/sysctl cleanups Luis Chamberlain
2021-11-23 20:23 ` [PATCH v2 1/9] sysctl: add a new register_sysctl_init() interface Luis Chamberlain
2021-11-25 16:14   ` Petr Mladek
2021-11-29 21:01     ` Luis Chamberlain
2021-11-23 20:23 ` [PATCH v2 2/9] sysctl: Move some boundary constants from sysctl.c to sysctl_vals Luis Chamberlain
2021-11-24  4:51   ` Eric W. Biederman
2021-11-24  7:05     ` Xiaoming Ni
2021-11-24 17:38       ` Eric W. Biederman
2021-11-24 23:12         ` Luis Chamberlain
2021-11-23 20:23 ` [PATCH v2 3/9] hung_task: Move hung_task sysctl interface to hung_task.c Luis Chamberlain
2021-11-26  9:46   ` Petr Mladek
2021-11-23 20:23 ` [PATCH v2 4/9] watchdog: move watchdog sysctl interface to watchdog.c Luis Chamberlain
2021-11-26  9:40   ` Petr Mladek
2021-11-23 20:23 ` [PATCH v2 5/9] sysctl: make ngroups_max const Luis Chamberlain
2021-11-23 20:23 ` [PATCH v2 6/9] sysctl: use const for typically used max/min proc sysctls Luis Chamberlain
2021-11-23 20:23 ` Luis Chamberlain [this message]
2021-11-23 20:23 ` [PATCH v2 8/9] aio: move aio sysctl to aio.c Luis Chamberlain
2021-11-24  9:32   ` Jan Kara
2021-11-23 20:23 ` [PATCH v2 9/9] dnotify: move dnotify sysctl to dnotify.c Luis Chamberlain
2021-11-24  9:31   ` Jan Kara
2021-11-24  0:14 ` [PATCH v2 0/9] sysctl: first set of kernel/sysctl cleanups Andrew Morton
2021-11-24  0:27   ` Luis Chamberlain

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