[PATCH 6/9] fs: move locking sysctls where they are used

Luis Chamberlain
2021-11-29T22:51:36Z

The locking fs sysctls are only used on fs/locks.c, so move
them there.
---
fs/locks.c | 34 ++++++++++++++++++++++++++++++++--
include/linux/fs.h | 4 ----
kernel/sysctl.c | 20 --------------------
3 files changed, 32 insertions(+), 26 deletions(-)

diff --git a/fs/locks.c b/fs/locks.c
index 0fca9d680978..8c6df10cd9ed 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -62,6 +62,7 @@
#include <linux/pid_namespace.h>
#include <linux/hashtable.h>
#include <linux/percpu.h>
+#include <linux/sysctl.h>

#define CREATE_TRACE_POINTS
#include <trace/events/filelock.h>
@@ -88,8 +89,37 @@ static int target_leasetype(struct file_lock *fl)
return fl->fl_type;
}

-int leases_enable = 1;
-int lease_break_time = 45;
+static int leases_enable = 1;
+static int lease_break_time = 45;
+
+#ifdef CONFIG_SYSCTL
+static struct ctl_table locks_sysctls[] = {
+ {
+ .procname = "leases-enable",
+ .data = &leases_enable,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#ifdef CONFIG_MMU
+ {
+ .procname = "lease-break-time",
+ .data = &lease_break_time,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = proc_dointvec,
+ },
+#endif /* CONFIG_MMU */
+ {}
+};
+
+static int __init init_fs_locks_sysctls(void)
+{
+ register_sysctl_init("fs", locks_sysctls);
+ return 0;
+}
+early_initcall(init_fs_locks_sysctls);
+#endif /* CONFIG_SYSCTL */

/*
* The global file_lock_list is only used for displaying /proc/locks, so we
diff --git a/include/linux/fs.h b/include/linux/fs.h
index edec0692f943..9ff634184f58 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -81,10 +81,6 @@ extern void __init files_maxfiles_init(void);
extern unsigned long get_max_files(void);
extern unsigned int sysctl_nr_open;
extern int leases_enable, lease_break_time;
-extern int sysctl_protected_symlinks;
-extern int sysctl_protected_hardlinks;
-extern int sysctl_protected_fifos;
-extern int sysctl_protected_regular;

typedef __kernel_rwf_t rwf_t;

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 865173cefcef..52a86746ac9d 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2896,26 +2896,6 @@ static struct ctl_table vm_table[] = {
};

static struct ctl_table fs_table[] = {
-#ifdef CONFIG_FILE_LOCKING
- {
- .procname = "leases-enable",
- .data = &leases_enable,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#ifdef CONFIG_MMU
-#ifdef CONFIG_FILE_LOCKING
- {
- .procname = "lease-break-time",
- .data = &lease_break_time,
- .maxlen = sizeof(int),
- .mode = 0644,
- .proc_handler = proc_dointvec,
- },
-#endif
-#endif
{
.procname = "protected_symlinks",
.data = &sysctl_protected_symlinks,
--
2.33.0