4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
6 * Copyright (c) 2017 Chao Yu <chao@kernel.org>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
12 #include <linux/compiler.h>
13 #include <linux/proc_fs.h>
14 #include <linux/f2fs_fs.h>
15 #include <linux/seq_file.h>
21 static struct proc_dir_entry *f2fs_proc_root;
23 /* Sysfs support for f2fs */
25 GC_THREAD, /* struct f2fs_gc_thread */
26 SM_INFO, /* struct f2fs_sm_info */
27 DCC_INFO, /* struct discard_cmd_control */
28 NM_INFO, /* struct f2fs_nm_info */
29 F2FS_SBI, /* struct f2fs_sb_info */
30 #ifdef CONFIG_F2FS_FAULT_INJECTION
31 FAULT_INFO_RATE, /* struct f2fs_fault_info */
32 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
34 RESERVED_BLOCKS, /* struct f2fs_sb_info */
38 struct attribute attr;
39 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
40 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
41 const char *, size_t);
47 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
49 if (struct_type == GC_THREAD)
50 return (unsigned char *)sbi->gc_thread;
51 else if (struct_type == SM_INFO)
52 return (unsigned char *)SM_I(sbi);
53 else if (struct_type == DCC_INFO)
54 return (unsigned char *)SM_I(sbi)->dcc_info;
55 else if (struct_type == NM_INFO)
56 return (unsigned char *)NM_I(sbi);
57 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
58 return (unsigned char *)sbi;
59 #ifdef CONFIG_F2FS_FAULT_INJECTION
60 else if (struct_type == FAULT_INFO_RATE ||
61 struct_type == FAULT_INFO_TYPE)
62 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
67 static ssize_t dirty_segments_show(struct f2fs_attr *a,
68 struct f2fs_sb_info *sbi, char *buf)
70 return snprintf(buf, PAGE_SIZE, "%llu\n",
71 (unsigned long long)(dirty_segments(sbi)));
74 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
75 struct f2fs_sb_info *sbi, char *buf)
77 struct super_block *sb = sbi->sb;
79 if (!sb->s_bdev->bd_part)
80 return snprintf(buf, PAGE_SIZE, "0\n");
82 return snprintf(buf, PAGE_SIZE, "%llu\n",
83 (unsigned long long)(sbi->kbytes_written +
84 BD_PART_WRITTEN(sbi)));
87 static ssize_t features_show(struct f2fs_attr *a,
88 struct f2fs_sb_info *sbi, char *buf)
90 struct super_block *sb = sbi->sb;
93 if (!sb->s_bdev->bd_part)
94 return snprintf(buf, PAGE_SIZE, "0\n");
96 if (f2fs_sb_has_encrypt(sb))
97 len += snprintf(buf, PAGE_SIZE - len, "%s",
99 if (f2fs_sb_has_blkzoned(sb))
100 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
101 len ? ", " : "", "blkzoned");
102 if (f2fs_sb_has_extra_attr(sb))
103 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
104 len ? ", " : "", "extra_attr");
105 if (f2fs_sb_has_project_quota(sb))
106 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
107 len ? ", " : "", "projquota");
108 if (f2fs_sb_has_inode_chksum(sb))
109 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
110 len ? ", " : "", "inode_checksum");
111 if (f2fs_sb_has_flexible_inline_xattr(sb))
112 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
113 len ? ", " : "", "flexible_inline_xattr");
114 if (f2fs_sb_has_quota_ino(sb))
115 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
116 len ? ", " : "", "quota_ino");
117 if (f2fs_sb_has_inode_crtime(sb))
118 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
119 len ? ", " : "", "inode_crtime");
120 if (f2fs_sb_has_lost_found(sb))
121 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
122 len ? ", " : "", "lost_found");
123 len += snprintf(buf + len, PAGE_SIZE - len, "\n");
127 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
128 struct f2fs_sb_info *sbi, char *buf)
130 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks);
133 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
134 struct f2fs_sb_info *sbi, char *buf)
136 unsigned char *ptr = NULL;
139 ptr = __struct_ptr(sbi, a->struct_type);
143 if (!strcmp(a->attr.name, "extension_list")) {
144 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
145 sbi->raw_super->extension_list;
146 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
147 int hot_count = sbi->raw_super->hot_ext_count;
150 len += snprintf(buf + len, PAGE_SIZE - len,
151 "cold file extension:\n");
152 for (i = 0; i < cold_count; i++)
153 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
156 len += snprintf(buf + len, PAGE_SIZE - len,
157 "hot file extension:\n");
158 for (i = cold_count; i < cold_count + hot_count; i++)
159 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
164 ui = (unsigned int *)(ptr + a->offset);
166 return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
169 static ssize_t __sbi_store(struct f2fs_attr *a,
170 struct f2fs_sb_info *sbi,
171 const char *buf, size_t count)
178 ptr = __struct_ptr(sbi, a->struct_type);
182 if (!strcmp(a->attr.name, "extension_list")) {
183 const char *name = strim((char *)buf);
184 bool set = true, hot;
186 if (!strncmp(name, "[h]", 3))
188 else if (!strncmp(name, "[c]", 3))
200 if (strlen(name) >= F2FS_EXTENSION_LEN)
203 down_write(&sbi->sb_lock);
205 ret = f2fs_update_extension_list(sbi, name, hot, set);
209 ret = f2fs_commit_super(sbi, false);
211 f2fs_update_extension_list(sbi, name, hot, !set);
213 up_write(&sbi->sb_lock);
214 return ret ? ret : count;
217 ui = (unsigned int *)(ptr + a->offset);
219 ret = kstrtoul(skip_spaces(buf), 0, &t);
222 #ifdef CONFIG_F2FS_FAULT_INJECTION
223 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
226 if (a->struct_type == RESERVED_BLOCKS) {
227 spin_lock(&sbi->stat_lock);
228 if (t > (unsigned long)(sbi->user_block_count -
229 F2FS_OPTION(sbi).root_reserved_blocks)) {
230 spin_unlock(&sbi->stat_lock);
234 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
235 sbi->user_block_count - valid_user_blocks(sbi));
236 spin_unlock(&sbi->stat_lock);
240 if (!strcmp(a->attr.name, "discard_granularity")) {
241 if (t == 0 || t > MAX_PLIST_NUM)
249 if (!strcmp(a->attr.name, "trim_sections"))
252 if (!strcmp(a->attr.name, "gc_urgent")) {
254 sbi->gc_mode = GC_URGENT;
255 if (sbi->gc_thread) {
256 wake_up_interruptible_all(
257 &sbi->gc_thread->gc_wait_queue_head);
258 wake_up_discard_thread(sbi, true);
261 sbi->gc_mode = GC_NORMAL;
265 if (!strcmp(a->attr.name, "gc_idle")) {
267 sbi->gc_mode = GC_IDLE_CB;
268 else if (t == GC_IDLE_GREEDY)
269 sbi->gc_mode = GC_IDLE_GREEDY;
271 sbi->gc_mode = GC_NORMAL;
277 if (!strcmp(a->attr.name, "iostat_enable") && *ui == 0)
278 f2fs_reset_iostat(sbi);
282 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
283 struct f2fs_sb_info *sbi,
284 const char *buf, size_t count)
287 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
288 a->struct_type == GC_THREAD);
291 if (!down_read_trylock(&sbi->sb->s_umount))
294 ret = __sbi_store(a, sbi, buf, count);
296 up_read(&sbi->sb->s_umount);
301 static ssize_t f2fs_attr_show(struct kobject *kobj,
302 struct attribute *attr, char *buf)
304 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
306 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
308 return a->show ? a->show(a, sbi, buf) : 0;
311 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
312 const char *buf, size_t len)
314 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
316 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
318 return a->store ? a->store(a, sbi, buf, len) : 0;
321 static void f2fs_sb_release(struct kobject *kobj)
323 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
325 complete(&sbi->s_kobj_unregister);
335 FEAT_FLEXIBLE_INLINE_XATTR,
341 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
342 struct f2fs_sb_info *sbi, char *buf)
347 case FEAT_ATOMIC_WRITE:
348 case FEAT_EXTRA_ATTR:
349 case FEAT_PROJECT_QUOTA:
350 case FEAT_INODE_CHECKSUM:
351 case FEAT_FLEXIBLE_INLINE_XATTR:
353 case FEAT_INODE_CRTIME:
354 case FEAT_LOST_FOUND:
355 return snprintf(buf, PAGE_SIZE, "supported\n");
360 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
361 static struct f2fs_attr f2fs_attr_##_name = { \
362 .attr = {.name = __stringify(_name), .mode = _mode }, \
365 .struct_type = _struct_type, \
369 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
370 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
371 f2fs_sbi_show, f2fs_sbi_store, \
372 offsetof(struct struct_name, elname))
374 #define F2FS_GENERAL_RO_ATTR(name) \
375 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
377 #define F2FS_FEATURE_RO_ATTR(_name, _id) \
378 static struct f2fs_attr f2fs_attr_##_name = { \
379 .attr = {.name = __stringify(_name), .mode = 0444 }, \
380 .show = f2fs_feature_show, \
384 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
386 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
387 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
388 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
389 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
390 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
391 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
392 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
393 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
394 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
395 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
396 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
397 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
398 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
399 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
400 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
401 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
402 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
403 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
404 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
405 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
406 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
407 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
408 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
409 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
410 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
411 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
412 #ifdef CONFIG_F2FS_FAULT_INJECTION
413 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
414 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
416 F2FS_GENERAL_RO_ATTR(dirty_segments);
417 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
418 F2FS_GENERAL_RO_ATTR(features);
419 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
421 #ifdef CONFIG_F2FS_FS_ENCRYPTION
422 F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
424 #ifdef CONFIG_BLK_DEV_ZONED
425 F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
427 F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
428 F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
429 F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
430 F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
431 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
432 F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
433 F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
434 F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
436 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
437 static struct attribute *f2fs_attrs[] = {
438 ATTR_LIST(gc_urgent_sleep_time),
439 ATTR_LIST(gc_min_sleep_time),
440 ATTR_LIST(gc_max_sleep_time),
441 ATTR_LIST(gc_no_gc_sleep_time),
443 ATTR_LIST(gc_urgent),
444 ATTR_LIST(reclaim_segments),
445 ATTR_LIST(max_small_discards),
446 ATTR_LIST(discard_granularity),
447 ATTR_LIST(batched_trim_sections),
448 ATTR_LIST(ipu_policy),
449 ATTR_LIST(min_ipu_util),
450 ATTR_LIST(min_fsync_blocks),
451 ATTR_LIST(min_hot_blocks),
452 ATTR_LIST(min_ssr_sections),
453 ATTR_LIST(max_victim_search),
454 ATTR_LIST(dir_level),
455 ATTR_LIST(ram_thresh),
456 ATTR_LIST(ra_nid_pages),
457 ATTR_LIST(dirty_nats_ratio),
458 ATTR_LIST(cp_interval),
459 ATTR_LIST(idle_interval),
460 ATTR_LIST(iostat_enable),
461 ATTR_LIST(readdir_ra),
462 ATTR_LIST(gc_pin_file_thresh),
463 ATTR_LIST(extension_list),
464 #ifdef CONFIG_F2FS_FAULT_INJECTION
465 ATTR_LIST(inject_rate),
466 ATTR_LIST(inject_type),
468 ATTR_LIST(dirty_segments),
469 ATTR_LIST(lifetime_write_kbytes),
471 ATTR_LIST(reserved_blocks),
472 ATTR_LIST(current_reserved_blocks),
476 static struct attribute *f2fs_feat_attrs[] = {
477 #ifdef CONFIG_F2FS_FS_ENCRYPTION
478 ATTR_LIST(encryption),
480 #ifdef CONFIG_BLK_DEV_ZONED
481 ATTR_LIST(block_zoned),
483 ATTR_LIST(atomic_write),
484 ATTR_LIST(extra_attr),
485 ATTR_LIST(project_quota),
486 ATTR_LIST(inode_checksum),
487 ATTR_LIST(flexible_inline_xattr),
488 ATTR_LIST(quota_ino),
489 ATTR_LIST(inode_crtime),
490 ATTR_LIST(lost_found),
494 static const struct sysfs_ops f2fs_attr_ops = {
495 .show = f2fs_attr_show,
496 .store = f2fs_attr_store,
499 static struct kobj_type f2fs_sb_ktype = {
500 .default_attrs = f2fs_attrs,
501 .sysfs_ops = &f2fs_attr_ops,
502 .release = f2fs_sb_release,
505 static struct kobj_type f2fs_ktype = {
506 .sysfs_ops = &f2fs_attr_ops,
509 static struct kset f2fs_kset = {
510 .kobj = {.ktype = &f2fs_ktype},
513 static struct kobj_type f2fs_feat_ktype = {
514 .default_attrs = f2fs_feat_attrs,
515 .sysfs_ops = &f2fs_attr_ops,
518 static struct kobject f2fs_feat = {
522 static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
525 struct super_block *sb = seq->private;
526 struct f2fs_sb_info *sbi = F2FS_SB(sb);
527 unsigned int total_segs =
528 le32_to_cpu(sbi->raw_super->segment_count_main);
531 seq_puts(seq, "format: segment_type|valid_blocks\n"
532 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
534 for (i = 0; i < total_segs; i++) {
535 struct seg_entry *se = get_seg_entry(sbi, i);
538 seq_printf(seq, "%-10d", i);
539 seq_printf(seq, "%d|%-3u", se->type,
540 get_valid_blocks(sbi, i, false));
541 if ((i % 10) == 9 || i == (total_segs - 1))
550 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
553 struct super_block *sb = seq->private;
554 struct f2fs_sb_info *sbi = F2FS_SB(sb);
555 unsigned int total_segs =
556 le32_to_cpu(sbi->raw_super->segment_count_main);
559 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
560 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
562 for (i = 0; i < total_segs; i++) {
563 struct seg_entry *se = get_seg_entry(sbi, i);
565 seq_printf(seq, "%-10d", i);
566 seq_printf(seq, "%d|%-3u|", se->type,
567 get_valid_blocks(sbi, i, false));
568 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
569 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
575 static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
578 struct super_block *sb = seq->private;
579 struct f2fs_sb_info *sbi = F2FS_SB(sb);
580 time64_t now = ktime_get_real_seconds();
582 if (!sbi->iostat_enable)
585 seq_printf(seq, "time: %-16llu\n", now);
588 seq_printf(seq, "app buffered: %-16llu\n",
589 sbi->write_iostat[APP_BUFFERED_IO]);
590 seq_printf(seq, "app direct: %-16llu\n",
591 sbi->write_iostat[APP_DIRECT_IO]);
592 seq_printf(seq, "app mapped: %-16llu\n",
593 sbi->write_iostat[APP_MAPPED_IO]);
596 seq_printf(seq, "fs data: %-16llu\n",
597 sbi->write_iostat[FS_DATA_IO]);
598 seq_printf(seq, "fs node: %-16llu\n",
599 sbi->write_iostat[FS_NODE_IO]);
600 seq_printf(seq, "fs meta: %-16llu\n",
601 sbi->write_iostat[FS_META_IO]);
602 seq_printf(seq, "fs gc data: %-16llu\n",
603 sbi->write_iostat[FS_GC_DATA_IO]);
604 seq_printf(seq, "fs gc node: %-16llu\n",
605 sbi->write_iostat[FS_GC_NODE_IO]);
606 seq_printf(seq, "fs cp data: %-16llu\n",
607 sbi->write_iostat[FS_CP_DATA_IO]);
608 seq_printf(seq, "fs cp node: %-16llu\n",
609 sbi->write_iostat[FS_CP_NODE_IO]);
610 seq_printf(seq, "fs cp meta: %-16llu\n",
611 sbi->write_iostat[FS_CP_META_IO]);
612 seq_printf(seq, "fs discard: %-16llu\n",
613 sbi->write_iostat[FS_DISCARD]);
618 int __init f2fs_init_sysfs(void)
622 kobject_set_name(&f2fs_kset.kobj, "f2fs");
623 f2fs_kset.kobj.parent = fs_kobj;
624 ret = kset_register(&f2fs_kset);
628 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
631 kset_unregister(&f2fs_kset);
633 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
637 void f2fs_exit_sysfs(void)
639 kobject_put(&f2fs_feat);
640 kset_unregister(&f2fs_kset);
641 remove_proc_entry("fs/f2fs", NULL);
642 f2fs_proc_root = NULL;
645 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
647 struct super_block *sb = sbi->sb;
650 sbi->s_kobj.kset = &f2fs_kset;
651 init_completion(&sbi->s_kobj_unregister);
652 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
658 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
661 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
662 segment_info_seq_show, sb);
663 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
664 segment_bits_seq_show, sb);
665 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
666 iostat_info_seq_show, sb);
671 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
674 remove_proc_entry("iostat_info", sbi->s_proc);
675 remove_proc_entry("segment_info", sbi->s_proc);
676 remove_proc_entry("segment_bits", sbi->s_proc);
677 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
679 kobject_del(&sbi->s_kobj);