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authorXiaoming Ni <nixiaoming@huawei.com>2022-01-21 22:11:19 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2022-01-22 08:33:34 +0200
commit2452dcb9f7f2bab5b47344148bc23a732be9195c (patch)
treef573dd0bf04ee85a2a76a78c9d9601713a7347c7 /kernel/sysctl.c
parentd73840ec2f747b860331bbba53677d0ce38fb9c1 (diff)
downloadlwn-2452dcb9f7f2bab5b47344148bc23a732be9195c.tar.gz
lwn-2452dcb9f7f2bab5b47344148bc23a732be9195c.zip
sysctl: use SYSCTL_ZERO to replace some static int zero uses
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). Link: https://lkml.kernel.org/r/20211123202347.818157-8-mcgrof@kernel.org Signed-off-by: Xiaoming Ni <nixiaoming@huawei.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Amir Goldstein <amir73il@gmail.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Benjamin LaHaise <bcrl@kvack.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Iurii Zaikin <yzaikin@google.com> Cc: Jan Kara <jack@suse.cz> Cc: Kees Cook <keescook@chromium.org> Cc: Paul Turner <pjt@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Qing Wang <wangqing@vivo.com> Cc: Sebastian Reichel <sre@kernel.org> Cc: Sergey Senozhatsky <senozhatsky@chromium.org> Cc: Stephen Kitt <steve@sk2.org> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Antti Palosaari <crope@iki.fi> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Clemens Ladisch <clemens@ladisch.de> Cc: David Airlie <airlied@linux.ie> Cc: Jani Nikula <jani.nikula@linux.intel.com> Cc: Joel Becker <jlbec@evilplan.org> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Joseph Qi <joseph.qi@linux.alibaba.com> Cc: Julia Lawall <julia.lawall@inria.fr> Cc: Lukas Middendorf <kernel@tuxforce.de> Cc: Mark Fasheh <mark@fasheh.com> Cc: Phillip Potter <phil@philpotter.co.uk> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Douglas Gilbert <dgilbert@interlog.com> Cc: James E.J. Bottomley <jejb@linux.ibm.com> Cc: Jani Nikula <jani.nikula@intel.com> Cc: John Ogness <john.ogness@linutronix.de> Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: "Rafael J. Wysocki" <rafael@kernel.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: Suren Baghdasaryan <surenb@google.com> Cc: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/sysctl.c')
-rw-r--r--kernel/sysctl.c14
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 134c2cb9ed4e..a2175a305f10 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -123,7 +123,7 @@ 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;
@@ -171,7 +171,7 @@ 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
@@ -2176,7 +2176,7 @@ 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,
},
{
@@ -2185,7 +2185,7 @@ 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
@@ -2759,7 +2759,7 @@ 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,
},
{
@@ -3071,7 +3071,7 @@ 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,
},
{
@@ -3080,7 +3080,7 @@ 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