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Message-ID: <tencent_1A550AD427417F937FE921CC6E7E5ACF2808@qq.com>
Date: Tue, 19 Mar 2024 23:57:48 +0800
From: wenyang.linux@...mail.com
To: "Eric W . Biederman" <ebiederm@...ssion.com>,
Luis Chamberlain <mcgrof@...nel.org>,
Kees Cook <keescook@...omium.org>,
Joel Granados <j.granados@...sung.com>,
Christian Brauner <brauner@...nel.org>
Cc: Dave Young <dyoung@...hat.com>,
Wen Yang <wenyang.linux@...mail.com>,
Jan Kara <jack@...e.cz>,
"Darrick J. Wong" <djwong@...nel.org>,
linux-kernel@...r.kernel.org
Subject: [RESEND PATCH v2 7/9] epoll: delete these unnecessary static variables long_zero and long_max
From: Wen Yang <wenyang.linux@...mail.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@...mail.com>
Cc: Eric W. Biederman <ebiederm@...ssion.com>
Cc: Luis Chamberlain <mcgrof@...nel.org>
Cc: Kees Cook <keescook@...omium.org>
Cc: Joel Granados <j.granados@...sung.com>
Cc: Christian Brauner <brauner@...nel.org>
Cc: Jan Kara <jack@...e.cz>
Cc: "Darrick J. Wong" <djwong@...nel.org>
Cc: linux-kernel@...r.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
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