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From: wenyang.linux@foxmail.com
To: "Eric W . Biederman" <ebiederm@xmission.com>,
	Luis Chamberlain <mcgrof@kernel.org>,
	Kees Cook <keescook@chromium.org>,
	Joel Granados <j.granados@samsung.com>,
	Christian Brauner <brauner@kernel.org>
Cc: Dave Young <dyoung@redhat.com>,
	Wen Yang <wenyang.linux@foxmail.com>, Jan Kara <jack@suse.cz>,
	"Darrick J. Wong" <djwong@kernel.org>,
	linux-kernel@vger.kernel.org
Subject: [RESEND PATCH v2 7/9] epoll: delete these unnecessary static variables long_zero and long_max
Date: Tue, 19 Mar 2024 23:57:48 +0800	[thread overview]
Message-ID: <tencent_1A550AD427417F937FE921CC6E7E5ACF2808@qq.com> (raw)
In-Reply-To: <26c450f6467b4cbaf94cdb10f047abc6ab0c2a5d.1710863674.git.wenyang.linux@foxmail.com>

From: Wen Yang <wenyang.linux@foxmail.com>

Delete unnecessary static variables (long_zero and long_max)
and encode them directly in the table entry.

Signed-off-by: Wen Yang <wenyang.linux@foxmail.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Joel Granados <j.granados@samsung.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jan Kara <jack@suse.cz>
Cc: "Darrick J. Wong" <djwong@kernel.org>
Cc: linux-kernel@vger.kernel.org
---
 fs/eventpoll.c | 19 +++++++------------
 1 file changed, 7 insertions(+), 12 deletions(-)

diff --git a/fs/eventpoll.c b/fs/eventpoll.c
index 3534d36a1474..7cfc4fb0ca3c 100644
--- a/fs/eventpoll.c
+++ b/fs/eventpoll.c
@@ -309,19 +309,14 @@ static void unlist_file(struct epitems_head *head)
 
 #include <linux/sysctl.h>
 
-static long long_zero;
-static long long_max = LONG_MAX;
-
 static struct ctl_table epoll_table[] = {
-	{
-		.procname	= "max_user_watches",
-		.data		= &max_user_watches,
-		.maxlen		= sizeof(max_user_watches),
-		.mode		= 0644,
-		.proc_handler	= proc_doulongvec_minmax,
-		.extra1		= &long_zero,
-		.extra2		= &long_max,
-	},
+	CTL_TABLE_ENTRY_MINMAX("max_user_watches",
+				&max_user_watches,
+				sizeof(max_user_watches),
+				0644,
+				proc_doulongvec_minmax,
+				SYSCTL_NUMERIC_ZERO,
+				SYSCTL_NUMERIC_LONG_MAX),
 };
 
 static void __init epoll_sysctls_init(void)
-- 
2.25.1


  parent reply	other threads:[~2024-03-19 15:58 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <26c450f6467b4cbaf94cdb10f047abc6ab0c2a5d.1710863674.git.wenyang.linux@foxmail.com>
2024-03-19 15:57 ` [RESEND PATCH v2 2/9] kernel/sysctl-test: add some kunit test cases for min/max detection wenyang.linux
2024-03-19 15:57 ` [RESEND PATCH v2 3/9] rxrpc: delete these unnecessary static variables n_65535, four, max_500, etc wenyang.linux
2024-03-19 15:57 ` [RESEND PATCH v2 4/9] net: ipv6: delete these unnecessary static variables two_five_five and minus_one wenyang.linux
2024-03-19 15:57 ` [RESEND PATCH v2 5/9] svcrdma: delete these unnecessary static variables min_ord, max_ord, etc wenyang.linux
2024-03-19 15:57 ` [RESEND PATCH v2 6/9] sysctl: delete these unnecessary static variables i_zero and i_one_hundred wenyang.linux
2024-03-19 15:57 ` wenyang.linux [this message]
2024-03-19 15:57 ` [RESEND PATCH v2 8/9] fs: inotify: delete these unnecessary static variables it_zero and it_int_max wenyang.linux
2024-03-20 10:36   ` Jan Kara
2024-03-21 10:55     ` Joel Granados
2024-03-21 11:38       ` Jan Kara
2024-03-21 14:41         ` Wen Yang
2024-03-21 16:32           ` Joel Granados
2024-03-21 16:37         ` Joel Granados
2024-03-19 15:57 ` [RESEND PATCH v2 9/9] ucounts: delete these unnecessary static variables ue_zero and ue_int_max wenyang.linux

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