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fs: fs-writeback: move sysctl to fs/fs-writeback.c

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The dirtytime_expire_interval belongs to fs/fs-writeback.c, move it to
fs/fs-writeback.c from /kernel/sysctl.c. And remove the useless extern
variable declaration and the function declaration from
include/linux/writeback.h

Signed-off-by: Kaixiong Yu <yukaixiong@huawei.com>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Joel Granados <joel.granados@kernel.org>
This commit is contained in:
Kaixiong Yu 2025-01-11 15:07:44 +08:00 committed by Joel Granados
parent 97f5420ef1
commit 94eed61d58
3 changed files with 21 additions and 21 deletions
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30
fs/fs-writeback.c
View File

@ -65,7 +65,7 @@ struct wb_writeback_work {
* timestamps written to disk after 12 hours, but in the worst case a * timestamps written to disk after 12 hours, but in the worst case a
* few inodes might not their timestamps updated for 24 hours. * few inodes might not their timestamps updated for 24 hours.
*/ */
unsigned int dirtytime_expire_interval = 12 * 60 * 60; static unsigned int dirtytime_expire_interval = 12 * 60 * 60;
static inline struct inode *wb_inode(struct list_head *head) static inline struct inode *wb_inode(struct list_head *head)
{ {
@ -2435,14 +2435,7 @@ static void wakeup_dirtytime_writeback(struct work_struct *w)
schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ); schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ);
} }
static int __init start_dirtytime_writeback(void) static int dirtytime_interval_handler(const struct ctl_table *table, int write,
{
schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ);
return 0;
}
__initcall(start_dirtytime_writeback);
int dirtytime_interval_handler(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos) void *buffer, size_t *lenp, loff_t *ppos)
{ {
int ret; int ret;
@ -2453,6 +2446,25 @@ int dirtytime_interval_handler(const struct ctl_table *table, int write,
return ret; return ret;
} }
static const struct ctl_table vm_fs_writeback_table[] = {
{
.procname = "dirtytime_expire_seconds",
.data = &dirtytime_expire_interval,
.maxlen = sizeof(dirtytime_expire_interval),
.mode = 0644,
.proc_handler = dirtytime_interval_handler,
.extra1 = SYSCTL_ZERO,
},
};
static int __init start_dirtytime_writeback(void)
{
schedule_delayed_work(&dirtytime_work, dirtytime_expire_interval * HZ);
register_sysctl_init("vm", vm_fs_writeback_table);
return 0;
}
__initcall(start_dirtytime_writeback);
/** /**
* __mark_inode_dirty - internal function to mark an inode dirty * __mark_inode_dirty - internal function to mark an inode dirty
* *

4
include/linux/writeback.h
View File

@ -327,12 +327,8 @@ extern struct wb_domain global_wb_domain;
/* These are exported to sysctl. */ /* These are exported to sysctl. */
extern unsigned int dirty_writeback_interval; extern unsigned int dirty_writeback_interval;
extern unsigned int dirty_expire_interval; extern unsigned int dirty_expire_interval;
extern unsigned int dirtytime_expire_interval;
extern int laptop_mode; extern int laptop_mode;
int dirtytime_interval_handler(const struct ctl_table *table, int write,
void *buffer, size_t *lenp, loff_t *ppos);
void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty); void global_dirty_limits(unsigned long *pbackground, unsigned long *pdirty);
unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh); unsigned long wb_calc_thresh(struct bdi_writeback *wb, unsigned long thresh);
unsigned long cgwb_calc_thresh(struct bdi_writeback *wb); unsigned long cgwb_calc_thresh(struct bdi_writeback *wb);

8
kernel/sysctl.c
View File

@ -2014,14 +2014,6 @@ static const struct ctl_table kern_table[] = {
}; };
static const struct ctl_table vm_table[] = { static const struct ctl_table vm_table[] = {
{
.procname = "dirtytime_expire_seconds",
.data = &dirtytime_expire_interval,
.maxlen = sizeof(dirtytime_expire_interval),
.mode = 0644,
.proc_handler = dirtytime_interval_handler,
.extra1 = SYSCTL_ZERO,
},
{ {
.procname = "drop_caches", .procname = "drop_caches",
.data = &sysctl_drop_caches, .data = &sysctl_drop_caches,