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f2fs: detect idle time depending on user behavior 

This patch adds last time that user requested filesystem operations.
This information is used to detect whether system is idle or not later.

Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-01-08 16:57:48 -08:00
parent 6beceb5427
commit d0239e1bf5
10 changed files with 44 additions and 10 deletions
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6
Documentation/ABI/testing/sysfs-fs-f2fs
View File

@ -87,6 +87,12 @@ Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Controls the checkpoint timing.
What: /sys/fs/f2fs/<disk>/idle_interval
Date: January 2016
Contact: "Jaegeuk Kim" <jaegeuk@kernel.org>
Description:
Controls the idle timing.
What: /sys/fs/f2fs/<disk>/ra_nid_pages
Date: October 2015
Contact: "Chao Yu" <chao2.yu@samsung.com>

1
fs/f2fs/data.c
View File

@ -1596,6 +1596,7 @@ static int f2fs_write_end(struct file *file,
}
f2fs_put_page(page, 1);
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
return copied;
}

4
fs/f2fs/dir.c
View File

@ -636,6 +636,7 @@ fail:
f2fs_put_page(dentry_page, 1);
out:
f2fs_fname_free_filename(&fname);
f2fs_update_time(F2FS_I_SB(dir), REQ_TIME);
return err;
}
@ -657,6 +658,7 @@ int f2fs_do_tmpfile(struct inode *inode, struct inode *dir)
clear_inode_flag(F2FS_I(inode), FI_NEW_INODE);
fail:
up_write(&F2FS_I(inode)->i_sem);
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
return err;
}
@ -701,6 +703,8 @@ void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
int i;
f2fs_update_time(F2FS_I_SB(dir), REQ_TIME);
if (f2fs_has_inline_dentry(dir))
return f2fs_delete_inline_entry(dentry, page, dir, inode);

15
fs/f2fs/f2fs.h
View File

@ -21,6 +21,7 @@
#include <linux/sched.h>
#include <linux/vmalloc.h>
#include <linux/bio.h>
#include <linux/blkdev.h>
#ifdef CONFIG_F2FS_CHECK_FS
#define f2fs_bug_on(sbi, condition) BUG_ON(condition)
@ -126,6 +127,7 @@ enum {
#define BATCHED_TRIM_BLOCKS(sbi) \
(BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg)
#define DEF_CP_INTERVAL 60 /* 60 secs */
#define DEF_IDLE_INTERVAL 120 /* 2 mins */
struct cp_control {
int reason;
@ -723,6 +725,7 @@ enum {
enum {
CP_TIME,
REQ_TIME,
MAX_TIME,
};
@ -856,6 +859,18 @@ static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
return time_after(jiffies, sbi->last_time[type] + interval);
}
static inline bool is_idle(struct f2fs_sb_info *sbi)
{
struct block_device *bdev = sbi->sb->s_bdev;
struct request_queue *q = bdev_get_queue(bdev);
struct request_list *rl = &q->root_rl;
if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC])
return 0;
return f2fs_time_over(sbi, REQ_TIME);
}
/*
* Inline functions
*/

12
fs/f2fs/file.c
View File

@ -96,6 +96,7 @@ mapped:
clear_cold_data(page);
out:
sb_end_pagefault(inode->i_sb);
f2fs_update_time(sbi, REQ_TIME);
return block_page_mkwrite_return(err);
}
@ -280,6 +281,7 @@ flush_out:
remove_ino_entry(sbi, ino, UPDATE_INO);
clear_inode_flag(fi, FI_UPDATE_WRITE);
ret = f2fs_issue_flush(sbi);
f2fs_update_time(sbi, REQ_TIME);
out:
trace_f2fs_sync_file_exit(inode, need_cp, datasync, ret);
f2fs_trace_ios(NULL, 1);
@ -485,6 +487,7 @@ int truncate_data_blocks_range(struct dnode_of_data *dn, int count)
}
dn->ofs_in_node = ofs;
f2fs_update_time(sbi, REQ_TIME);
trace_f2fs_truncate_data_blocks_range(dn->inode, dn->nid,
dn->ofs_in_node, nr_free);
return nr_free;
@ -1236,6 +1239,7 @@ static long f2fs_fallocate(struct file *file, int mode,
if (!ret) {
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
mark_inode_dirty(inode);
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
}
out:
@ -1351,6 +1355,8 @@ static int f2fs_ioc_start_atomic_write(struct file *filp)
return ret;
set_inode_flag(F2FS_I(inode), FI_ATOMIC_FILE);
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
return 0;
}
@ -1398,6 +1404,7 @@ static int f2fs_ioc_start_volatile_write(struct file *filp)
return ret;
set_inode_flag(F2FS_I(inode), FI_VOLATILE_FILE);
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
return 0;
}
@ -1439,6 +1446,7 @@ static int f2fs_ioc_abort_volatile_write(struct file *filp)
}
mnt_drop_write_file(filp);
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
return ret;
}
@ -1478,6 +1486,7 @@ static int f2fs_ioc_shutdown(struct file *filp, unsigned long arg)
default:
return -EINVAL;
}
f2fs_update_time(sbi, REQ_TIME);
return 0;
}
@ -1508,6 +1517,7 @@ static int f2fs_ioc_fitrim(struct file *filp, unsigned long arg)
if (copy_to_user((struct fstrim_range __user *)arg, &range,
sizeof(range)))
return -EFAULT;
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
return 0;
}
@ -1531,6 +1541,7 @@ static int f2fs_ioc_set_encryption_policy(struct file *filp, unsigned long arg)
sizeof(policy)))
return -EFAULT;
f2fs_update_time(F2FS_I_SB(inode), REQ_TIME);
return f2fs_process_policy(&policy, inode);
#else
return -EOPNOTSUPP;
@ -1807,6 +1818,7 @@ static int f2fs_ioc_defragment(struct file *filp, unsigned long arg)
}
err = f2fs_defragment_range(sbi, filp, &range);
f2fs_update_time(sbi, REQ_TIME);
if (err < 0)
goto out;

1
fs/f2fs/gc.c
View File

@ -16,7 +16,6 @@
#include <linux/kthread.h>
#include <linux/delay.h>
#include <linux/freezer.h>
#include <linux/blkdev.h>
#include "f2fs.h"
#include "node.h"

8
fs/f2fs/gc.h
View File

@ -100,11 +100,3 @@ static inline bool has_enough_invalid_blocks(struct f2fs_sb_info *sbi)
return true;
return false;
}
static inline int is_idle(struct f2fs_sb_info *sbi)
{
struct block_device *bdev = sbi->sb->s_bdev;
struct request_queue *q = bdev_get_queue(bdev);
struct request_list *rl = &q->root_rl;
return !(rl->count[BLK_RW_SYNC]) && !(rl->count[BLK_RW_ASYNC]);
}

2
fs/f2fs/segment.c
View File

@ -293,7 +293,7 @@ void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi)
if (!available_free_memory(sbi, NAT_ENTRIES) ||
excess_prefree_segs(sbi) ||
!available_free_memory(sbi, INO_ENTRIES) ||
f2fs_time_over(sbi, CP_TIME)) {
(is_idle(sbi) && f2fs_time_over(sbi, CP_TIME))) {
if (test_opt(sbi, DATA_FLUSH))
sync_dirty_inodes(sbi, FILE_INODE);
f2fs_sync_fs(sbi->sb, true);

4
fs/f2fs/super.c
View File

@ -219,6 +219,7 @@ F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
static struct attribute *f2fs_attrs[] = {
@ -237,6 +238,7 @@ static struct attribute *f2fs_attrs[] = {
ATTR_LIST(ram_thresh),
ATTR_LIST(ra_nid_pages),
ATTR_LIST(cp_interval),
ATTR_LIST(idle_interval),
NULL,
};
@ -1123,6 +1125,7 @@ static void init_sb_info(struct f2fs_sb_info *sbi)
sbi->dir_level = DEF_DIR_LEVEL;
sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL;
sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL;
clear_sbi_flag(sbi, SBI_NEED_FSCK);
INIT_LIST_HEAD(&sbi->s_list);
@ -1468,6 +1471,7 @@ try_onemore:
}
f2fs_update_time(sbi, CP_TIME);
f2fs_update_time(sbi, REQ_TIME);
return 0;
free_kobj:

1
fs/f2fs/xattr.c
View File

@ -618,5 +618,6 @@ int f2fs_setxattr(struct inode *inode, int index, const char *name,
up_write(&F2FS_I(inode)->i_sem);
f2fs_unlock_op(sbi);
f2fs_update_time(sbi, REQ_TIME);
return err;
}