1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * f2fs sysfs interface
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 * Copyright (c) 2017 Chao Yu <chao@kernel.org>
8 */
9 #include <linux/compiler.h>
10 #include <linux/proc_fs.h>
11 #include <linux/f2fs_fs.h>
12 #include <linux/seq_file.h>
13 #include <linux/unicode.h>
14 #include <linux/ioprio.h>
15 #include <linux/sysfs.h>
16
17 #include "f2fs.h"
18 #include "segment.h"
19 #include "gc.h"
20 #include "iostat.h"
21 #include <trace/events/f2fs.h>
22
23 static struct proc_dir_entry *f2fs_proc_root;
24
25 /* Sysfs support for f2fs */
26 enum {
27 GC_THREAD, /* struct f2fs_gc_thread */
28 SM_INFO, /* struct f2fs_sm_info */
29 DCC_INFO, /* struct discard_cmd_control */
30 NM_INFO, /* struct f2fs_nm_info */
31 F2FS_SBI, /* struct f2fs_sb_info */
32 #ifdef CONFIG_F2FS_STAT_FS
33 STAT_INFO, /* struct f2fs_stat_info */
34 #endif
35 #ifdef CONFIG_F2FS_FAULT_INJECTION
36 FAULT_INFO_RATE, /* struct f2fs_fault_info */
37 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
38 #endif
39 RESERVED_BLOCKS, /* struct f2fs_sb_info */
40 CPRC_INFO, /* struct ckpt_req_control */
41 ATGC_INFO, /* struct atgc_management */
42 };
43
44 static const char *gc_mode_names[MAX_GC_MODE] = {
45 "GC_NORMAL",
46 "GC_IDLE_CB",
47 "GC_IDLE_GREEDY",
48 "GC_IDLE_AT",
49 "GC_URGENT_HIGH",
50 "GC_URGENT_LOW",
51 "GC_URGENT_MID"
52 };
53
54 struct f2fs_attr {
55 struct attribute attr;
56 ssize_t (*show)(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf);
57 ssize_t (*store)(struct f2fs_attr *a, struct f2fs_sb_info *sbi,
58 const char *buf, size_t len);
59 int struct_type;
60 int offset;
61 int id;
62 };
63
64 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
65 struct f2fs_sb_info *sbi, char *buf);
66
67 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
68 {
69 if (struct_type == GC_THREAD)
70 return (unsigned char *)sbi->gc_thread;
71 else if (struct_type == SM_INFO)
72 return (unsigned char *)SM_I(sbi);
73 else if (struct_type == DCC_INFO)
74 return (unsigned char *)SM_I(sbi)->dcc_info;
75 else if (struct_type == NM_INFO)
76 return (unsigned char *)NM_I(sbi);
77 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
78 return (unsigned char *)sbi;
79 #ifdef CONFIG_F2FS_FAULT_INJECTION
80 else if (struct_type == FAULT_INFO_RATE ||
81 struct_type == FAULT_INFO_TYPE)
82 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
83 #endif
84 #ifdef CONFIG_F2FS_STAT_FS
85 else if (struct_type == STAT_INFO)
86 return (unsigned char *)F2FS_STAT(sbi);
87 #endif
88 else if (struct_type == CPRC_INFO)
89 return (unsigned char *)&sbi->cprc_info;
90 else if (struct_type == ATGC_INFO)
91 return (unsigned char *)&sbi->am;
92 return NULL;
93 }
94
95 static ssize_t dirty_segments_show(struct f2fs_attr *a,
96 struct f2fs_sb_info *sbi, char *buf)
97 {
98 return sysfs_emit(buf, "%llu\n",
99 (unsigned long long)(dirty_segments(sbi)));
100 }
101
102 static ssize_t free_segments_show(struct f2fs_attr *a,
103 struct f2fs_sb_info *sbi, char *buf)
104 {
105 return sysfs_emit(buf, "%llu\n",
106 (unsigned long long)(free_segments(sbi)));
107 }
108
109 static ssize_t ovp_segments_show(struct f2fs_attr *a,
110 struct f2fs_sb_info *sbi, char *buf)
111 {
112 return sysfs_emit(buf, "%llu\n",
113 (unsigned long long)(overprovision_segments(sbi)));
114 }
115
116 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
117 struct f2fs_sb_info *sbi, char *buf)
118 {
119 return sysfs_emit(buf, "%llu\n",
120 (unsigned long long)(sbi->kbytes_written +
121 ((f2fs_get_sectors_written(sbi) -
122 sbi->sectors_written_start) >> 1)));
123 }
124
125 static ssize_t sb_status_show(struct f2fs_attr *a,
126 struct f2fs_sb_info *sbi, char *buf)
127 {
128 return sysfs_emit(buf, "%lx\n", sbi->s_flag);
129 }
130
131 static ssize_t cp_status_show(struct f2fs_attr *a,
132 struct f2fs_sb_info *sbi, char *buf)
133 {
134 return sysfs_emit(buf, "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags));
135 }
136
137 static ssize_t pending_discard_show(struct f2fs_attr *a,
138 struct f2fs_sb_info *sbi, char *buf)
139 {
140 if (!SM_I(sbi)->dcc_info)
141 return -EINVAL;
142 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
143 &SM_I(sbi)->dcc_info->discard_cmd_cnt));
144 }
145
146 static ssize_t issued_discard_show(struct f2fs_attr *a,
147 struct f2fs_sb_info *sbi, char *buf)
148 {
149 if (!SM_I(sbi)->dcc_info)
150 return -EINVAL;
151 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
152 &SM_I(sbi)->dcc_info->issued_discard));
153 }
154
155 static ssize_t queued_discard_show(struct f2fs_attr *a,
156 struct f2fs_sb_info *sbi, char *buf)
157 {
158 if (!SM_I(sbi)->dcc_info)
159 return -EINVAL;
160 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
161 &SM_I(sbi)->dcc_info->queued_discard));
162 }
163
164 static ssize_t undiscard_blks_show(struct f2fs_attr *a,
165 struct f2fs_sb_info *sbi, char *buf)
166 {
167 if (!SM_I(sbi)->dcc_info)
168 return -EINVAL;
169 return sysfs_emit(buf, "%u\n",
170 SM_I(sbi)->dcc_info->undiscard_blks);
171 }
172
173 static ssize_t gc_mode_show(struct f2fs_attr *a,
174 struct f2fs_sb_info *sbi, char *buf)
175 {
176 return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]);
177 }
178
179 static ssize_t features_show(struct f2fs_attr *a,
180 struct f2fs_sb_info *sbi, char *buf)
181 {
182 int len = 0;
183
184 if (f2fs_sb_has_encrypt(sbi))
185 len += scnprintf(buf, PAGE_SIZE - len, "%s",
186 "encryption");
187 if (f2fs_sb_has_blkzoned(sbi))
188 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
189 len ? ", " : "", "blkzoned");
190 if (f2fs_sb_has_extra_attr(sbi))
191 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
192 len ? ", " : "", "extra_attr");
193 if (f2fs_sb_has_project_quota(sbi))
194 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
195 len ? ", " : "", "projquota");
196 if (f2fs_sb_has_inode_chksum(sbi))
197 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
198 len ? ", " : "", "inode_checksum");
199 if (f2fs_sb_has_flexible_inline_xattr(sbi))
200 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
201 len ? ", " : "", "flexible_inline_xattr");
202 if (f2fs_sb_has_quota_ino(sbi))
203 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
204 len ? ", " : "", "quota_ino");
205 if (f2fs_sb_has_inode_crtime(sbi))
206 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
207 len ? ", " : "", "inode_crtime");
208 if (f2fs_sb_has_lost_found(sbi))
209 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
210 len ? ", " : "", "lost_found");
211 if (f2fs_sb_has_verity(sbi))
212 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
213 len ? ", " : "", "verity");
214 if (f2fs_sb_has_sb_chksum(sbi))
215 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
216 len ? ", " : "", "sb_checksum");
217 if (f2fs_sb_has_casefold(sbi))
218 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
219 len ? ", " : "", "casefold");
220 if (f2fs_sb_has_readonly(sbi))
221 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
222 len ? ", " : "", "readonly");
223 if (f2fs_sb_has_compression(sbi))
224 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
225 len ? ", " : "", "compression");
226 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
227 len ? ", " : "", "pin_file");
228 len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
229 return len;
230 }
231
232 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
233 struct f2fs_sb_info *sbi, char *buf)
234 {
235 return sysfs_emit(buf, "%u\n", sbi->current_reserved_blocks);
236 }
237
238 static ssize_t unusable_show(struct f2fs_attr *a,
239 struct f2fs_sb_info *sbi, char *buf)
240 {
241 block_t unusable;
242
243 if (test_opt(sbi, DISABLE_CHECKPOINT))
244 unusable = sbi->unusable_block_count;
245 else
246 unusable = f2fs_get_unusable_blocks(sbi);
247 return sysfs_emit(buf, "%llu\n", (unsigned long long)unusable);
248 }
249
250 static ssize_t encoding_show(struct f2fs_attr *a,
251 struct f2fs_sb_info *sbi, char *buf)
252 {
253 #if IS_ENABLED(CONFIG_UNICODE)
254 struct super_block *sb = sbi->sb;
255
256 if (f2fs_sb_has_casefold(sbi))
257 return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n",
258 (sb->s_encoding->version >> 16) & 0xff,
259 (sb->s_encoding->version >> 8) & 0xff,
260 sb->s_encoding->version & 0xff);
261 #endif
262 return sysfs_emit(buf, "(none)\n");
263 }
264
265 static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
266 struct f2fs_sb_info *sbi, char *buf)
267 {
268 return sysfs_emit(buf, "%llu\n", SIT_I(sbi)->mounted_time);
269 }
270
271 #ifdef CONFIG_F2FS_STAT_FS
272 static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
273 struct f2fs_sb_info *sbi, char *buf)
274 {
275 struct f2fs_stat_info *si = F2FS_STAT(sbi);
276
277 return sysfs_emit(buf, "%llu\n",
278 (unsigned long long)(si->tot_blks -
279 (si->bg_data_blks + si->bg_node_blks)));
280 }
281
282 static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
283 struct f2fs_sb_info *sbi, char *buf)
284 {
285 struct f2fs_stat_info *si = F2FS_STAT(sbi);
286
287 return sysfs_emit(buf, "%llu\n",
288 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
289 }
290
291 static ssize_t avg_vblocks_show(struct f2fs_attr *a,
292 struct f2fs_sb_info *sbi, char *buf)
293 {
294 struct f2fs_stat_info *si = F2FS_STAT(sbi);
295
296 si->dirty_count = dirty_segments(sbi);
297 f2fs_update_sit_info(sbi);
298 return sysfs_emit(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
299 }
300 #endif
301
302 static ssize_t main_blkaddr_show(struct f2fs_attr *a,
303 struct f2fs_sb_info *sbi, char *buf)
304 {
305 return sysfs_emit(buf, "%llu\n",
306 (unsigned long long)MAIN_BLKADDR(sbi));
307 }
308
309 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
310 struct f2fs_sb_info *sbi, char *buf)
311 {
312 unsigned char *ptr = NULL;
313 unsigned int *ui;
314
315 ptr = __struct_ptr(sbi, a->struct_type);
316 if (!ptr)
317 return -EINVAL;
318
319 if (!strcmp(a->attr.name, "extension_list")) {
320 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
321 sbi->raw_super->extension_list;
322 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
323 int hot_count = sbi->raw_super->hot_ext_count;
324 int len = 0, i;
325
326 len += scnprintf(buf + len, PAGE_SIZE - len,
327 "cold file extension:\n");
328 for (i = 0; i < cold_count; i++)
329 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
330 extlist[i]);
331
332 len += scnprintf(buf + len, PAGE_SIZE - len,
333 "hot file extension:\n");
334 for (i = cold_count; i < cold_count + hot_count; i++)
335 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
336 extlist[i]);
337 return len;
338 }
339
340 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
341 struct ckpt_req_control *cprc = &sbi->cprc_info;
342 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
343 int level = IOPRIO_PRIO_LEVEL(cprc->ckpt_thread_ioprio);
344
345 if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE)
346 return -EINVAL;
347
348 return sysfs_emit(buf, "%s,%d\n",
349 class == IOPRIO_CLASS_RT ? "rt" : "be", level);
350 }
351
352 #ifdef CONFIG_F2FS_FS_COMPRESSION
353 if (!strcmp(a->attr.name, "compr_written_block"))
354 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block);
355
356 if (!strcmp(a->attr.name, "compr_saved_block"))
357 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block);
358
359 if (!strcmp(a->attr.name, "compr_new_inode"))
360 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode);
361 #endif
362
363 if (!strcmp(a->attr.name, "gc_segment_mode"))
364 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode);
365
366 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
367 return sysfs_emit(buf, "%u\n",
368 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]);
369 }
370
371 if (!strcmp(a->attr.name, "current_atomic_write")) {
372 s64 current_write = atomic64_read(&sbi->current_atomic_write);
373
374 return sysfs_emit(buf, "%lld\n", current_write);
375 }
376
377 if (!strcmp(a->attr.name, "peak_atomic_write"))
378 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write);
379
380 if (!strcmp(a->attr.name, "committed_atomic_block"))
381 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block);
382
383 if (!strcmp(a->attr.name, "revoked_atomic_block"))
384 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block);
385
386 #ifdef CONFIG_F2FS_STAT_FS
387 if (!strcmp(a->attr.name, "cp_foreground_calls"))
388 return sysfs_emit(buf, "%d\n",
389 atomic_read(&sbi->cp_call_count[TOTAL_CALL]) -
390 atomic_read(&sbi->cp_call_count[BACKGROUND]));
391 if (!strcmp(a->attr.name, "cp_background_calls"))
392 return sysfs_emit(buf, "%d\n",
393 atomic_read(&sbi->cp_call_count[BACKGROUND]));
394 #endif
395
396 ui = (unsigned int *)(ptr + a->offset);
397
398 return sysfs_emit(buf, "%u\n", *ui);
399 }
400
401 static ssize_t __sbi_store(struct f2fs_attr *a,
402 struct f2fs_sb_info *sbi,
403 const char *buf, size_t count)
404 {
405 unsigned char *ptr;
406 unsigned long t;
407 unsigned int *ui;
408 ssize_t ret;
409
410 ptr = __struct_ptr(sbi, a->struct_type);
411 if (!ptr)
412 return -EINVAL;
413
414 if (!strcmp(a->attr.name, "extension_list")) {
415 const char *name = strim((char *)buf);
416 bool set = true, hot;
417
418 if (!strncmp(name, "[h]", 3))
419 hot = true;
420 else if (!strncmp(name, "[c]", 3))
421 hot = false;
422 else
423 return -EINVAL;
424
425 name += 3;
426
427 if (*name == '!') {
428 name++;
429 set = false;
430 }
431
432 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN)
433 return -EINVAL;
434
435 f2fs_down_write(&sbi->sb_lock);
436
437 ret = f2fs_update_extension_list(sbi, name, hot, set);
438 if (ret)
439 goto out;
440
441 ret = f2fs_commit_super(sbi, false);
442 if (ret)
443 f2fs_update_extension_list(sbi, name, hot, !set);
444 out:
445 f2fs_up_write(&sbi->sb_lock);
446 return ret ? ret : count;
447 }
448
449 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
450 const char *name = strim((char *)buf);
451 struct ckpt_req_control *cprc = &sbi->cprc_info;
452 int class;
453 long level;
454 int ret;
455
456 if (!strncmp(name, "rt,", 3))
457 class = IOPRIO_CLASS_RT;
458 else if (!strncmp(name, "be,", 3))
459 class = IOPRIO_CLASS_BE;
460 else
461 return -EINVAL;
462
463 name += 3;
464 ret = kstrtol(name, 10, &level);
465 if (ret)
466 return ret;
467 if (level >= IOPRIO_NR_LEVELS || level < 0)
468 return -EINVAL;
469
470 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, level);
471 if (test_opt(sbi, MERGE_CHECKPOINT)) {
472 ret = set_task_ioprio(cprc->f2fs_issue_ckpt,
473 cprc->ckpt_thread_ioprio);
474 if (ret)
475 return ret;
476 }
477
478 return count;
479 }
480
481 ui = (unsigned int *)(ptr + a->offset);
482
483 ret = kstrtoul(skip_spaces(buf), 0, &t);
484 if (ret < 0)
485 return ret;
486 #ifdef CONFIG_F2FS_FAULT_INJECTION
487 if (a->struct_type == FAULT_INFO_TYPE) {
488 if (f2fs_build_fault_attr(sbi, 0, t))
489 return -EINVAL;
490 return count;
491 }
492 if (a->struct_type == FAULT_INFO_RATE) {
493 if (f2fs_build_fault_attr(sbi, t, 0))
494 return -EINVAL;
495 return count;
496 }
497 #endif
498 if (a->struct_type == RESERVED_BLOCKS) {
499 spin_lock(&sbi->stat_lock);
500 if (t > (unsigned long)(sbi->user_block_count -
501 F2FS_OPTION(sbi).root_reserved_blocks -
502 SEGS_TO_BLKS(sbi,
503 SM_I(sbi)->additional_reserved_segments))) {
504 spin_unlock(&sbi->stat_lock);
505 return -EINVAL;
506 }
507 *ui = t;
508 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
509 sbi->user_block_count - valid_user_blocks(sbi));
510 spin_unlock(&sbi->stat_lock);
511 return count;
512 }
513
514 if (!strcmp(a->attr.name, "discard_io_aware_gran")) {
515 if (t > MAX_PLIST_NUM)
516 return -EINVAL;
517 if (!f2fs_block_unit_discard(sbi))
518 return -EINVAL;
519 if (t == *ui)
520 return count;
521 *ui = t;
522 return count;
523 }
524
525 if (!strcmp(a->attr.name, "discard_granularity")) {
526 if (t == 0 || t > MAX_PLIST_NUM)
527 return -EINVAL;
528 if (!f2fs_block_unit_discard(sbi))
529 return -EINVAL;
530 if (t == *ui)
531 return count;
532 *ui = t;
533 return count;
534 }
535
536 if (!strcmp(a->attr.name, "max_ordered_discard")) {
537 if (t == 0 || t > MAX_PLIST_NUM)
538 return -EINVAL;
539 if (!f2fs_block_unit_discard(sbi))
540 return -EINVAL;
541 *ui = t;
542 return count;
543 }
544
545 if (!strcmp(a->attr.name, "discard_urgent_util")) {
546 if (t > 100)
547 return -EINVAL;
548 *ui = t;
549 return count;
550 }
551
552 if (!strcmp(a->attr.name, "discard_io_aware")) {
553 if (t >= DPOLICY_IO_AWARE_MAX)
554 return -EINVAL;
555 *ui = t;
556 return count;
557 }
558
559 if (!strcmp(a->attr.name, "migration_granularity")) {
560 if (t == 0 || t > SEGS_PER_SEC(sbi))
561 return -EINVAL;
562 }
563
564 if (!strcmp(a->attr.name, "migration_window_granularity")) {
565 if (t == 0 || t > SEGS_PER_SEC(sbi))
566 return -EINVAL;
567 }
568
569 if (!strcmp(a->attr.name, "gc_urgent")) {
570 if (t == 0) {
571 sbi->gc_mode = GC_NORMAL;
572 } else if (t == 1) {
573 sbi->gc_mode = GC_URGENT_HIGH;
574 if (sbi->gc_thread) {
575 sbi->gc_thread->gc_wake = true;
576 wake_up_interruptible_all(
577 &sbi->gc_thread->gc_wait_queue_head);
578 wake_up_discard_thread(sbi, true);
579 }
580 } else if (t == 2) {
581 sbi->gc_mode = GC_URGENT_LOW;
582 } else if (t == 3) {
583 sbi->gc_mode = GC_URGENT_MID;
584 if (sbi->gc_thread) {
585 sbi->gc_thread->gc_wake = true;
586 wake_up_interruptible_all(
587 &sbi->gc_thread->gc_wait_queue_head);
588 }
589 } else {
590 return -EINVAL;
591 }
592 return count;
593 }
594 if (!strcmp(a->attr.name, "gc_idle")) {
595 if (t == GC_IDLE_CB) {
596 sbi->gc_mode = GC_IDLE_CB;
597 } else if (t == GC_IDLE_GREEDY) {
598 sbi->gc_mode = GC_IDLE_GREEDY;
599 } else if (t == GC_IDLE_AT) {
600 if (!sbi->am.atgc_enabled)
601 return -EINVAL;
602 sbi->gc_mode = GC_IDLE_AT;
603 } else {
604 sbi->gc_mode = GC_NORMAL;
605 }
606 return count;
607 }
608
609 if (!strcmp(a->attr.name, "gc_remaining_trials")) {
610 spin_lock(&sbi->gc_remaining_trials_lock);
611 sbi->gc_remaining_trials = t;
612 spin_unlock(&sbi->gc_remaining_trials_lock);
613
614 return count;
615 }
616
617 #ifdef CONFIG_F2FS_IOSTAT
618 if (!strcmp(a->attr.name, "iostat_enable")) {
619 sbi->iostat_enable = !!t;
620 if (!sbi->iostat_enable)
621 f2fs_reset_iostat(sbi);
622 return count;
623 }
624
625 if (!strcmp(a->attr.name, "iostat_period_ms")) {
626 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
627 return -EINVAL;
628 spin_lock_irq(&sbi->iostat_lock);
629 sbi->iostat_period_ms = (unsigned int)t;
630 spin_unlock_irq(&sbi->iostat_lock);
631 return count;
632 }
633 #endif
634
635 #ifdef CONFIG_BLK_DEV_ZONED
636 if (!strcmp(a->attr.name, "blkzone_alloc_policy")) {
637 if (t < BLKZONE_ALLOC_PRIOR_SEQ || t > BLKZONE_ALLOC_PRIOR_CONV)
638 return -EINVAL;
639 sbi->blkzone_alloc_policy = t;
640 return count;
641 }
642 #endif
643
644 #ifdef CONFIG_F2FS_FS_COMPRESSION
645 if (!strcmp(a->attr.name, "compr_written_block") ||
646 !strcmp(a->attr.name, "compr_saved_block")) {
647 if (t != 0)
648 return -EINVAL;
649 sbi->compr_written_block = 0;
650 sbi->compr_saved_block = 0;
651 return count;
652 }
653
654 if (!strcmp(a->attr.name, "compr_new_inode")) {
655 if (t != 0)
656 return -EINVAL;
657 sbi->compr_new_inode = 0;
658 return count;
659 }
660
661 if (!strcmp(a->attr.name, "compress_percent")) {
662 if (t == 0 || t > 100)
663 return -EINVAL;
664 *ui = t;
665 return count;
666 }
667
668 if (!strcmp(a->attr.name, "compress_watermark")) {
669 if (t == 0 || t > 100)
670 return -EINVAL;
671 *ui = t;
672 return count;
673 }
674 #endif
675
676 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
677 if (t > 100)
678 return -EINVAL;
679 sbi->am.candidate_ratio = t;
680 return count;
681 }
682
683 if (!strcmp(a->attr.name, "atgc_age_weight")) {
684 if (t > 100)
685 return -EINVAL;
686 sbi->am.age_weight = t;
687 return count;
688 }
689
690 if (!strcmp(a->attr.name, "gc_segment_mode")) {
691 if (t < MAX_GC_MODE)
692 sbi->gc_segment_mode = t;
693 else
694 return -EINVAL;
695 return count;
696 }
697
698 if (!strcmp(a->attr.name, "gc_pin_file_threshold")) {
699 if (t > MAX_GC_FAILED_PINNED_FILES)
700 return -EINVAL;
701 sbi->gc_pin_file_threshold = t;
702 return count;
703 }
704
705 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
706 if (t != 0)
707 return -EINVAL;
708 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0;
709 return count;
710 }
711
712 if (!strcmp(a->attr.name, "seq_file_ra_mul")) {
713 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL)
714 sbi->seq_file_ra_mul = t;
715 else
716 return -EINVAL;
717 return count;
718 }
719
720 if (!strcmp(a->attr.name, "max_fragment_chunk")) {
721 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
722 sbi->max_fragment_chunk = t;
723 else
724 return -EINVAL;
725 return count;
726 }
727
728 if (!strcmp(a->attr.name, "max_fragment_hole")) {
729 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
730 sbi->max_fragment_hole = t;
731 else
732 return -EINVAL;
733 return count;
734 }
735
736 if (!strcmp(a->attr.name, "peak_atomic_write")) {
737 if (t != 0)
738 return -EINVAL;
739 sbi->peak_atomic_write = 0;
740 return count;
741 }
742
743 if (!strcmp(a->attr.name, "committed_atomic_block")) {
744 if (t != 0)
745 return -EINVAL;
746 sbi->committed_atomic_block = 0;
747 return count;
748 }
749
750 if (!strcmp(a->attr.name, "revoked_atomic_block")) {
751 if (t != 0)
752 return -EINVAL;
753 sbi->revoked_atomic_block = 0;
754 return count;
755 }
756
757 if (!strcmp(a->attr.name, "readdir_ra")) {
758 sbi->readdir_ra = !!t;
759 return count;
760 }
761
762 if (!strcmp(a->attr.name, "hot_data_age_threshold")) {
763 if (t == 0 || t >= sbi->warm_data_age_threshold)
764 return -EINVAL;
765 if (t == *ui)
766 return count;
767 *ui = (unsigned int)t;
768 return count;
769 }
770
771 if (!strcmp(a->attr.name, "warm_data_age_threshold")) {
772 if (t <= sbi->hot_data_age_threshold)
773 return -EINVAL;
774 if (t == *ui)
775 return count;
776 *ui = (unsigned int)t;
777 return count;
778 }
779
780 if (!strcmp(a->attr.name, "last_age_weight")) {
781 if (t > 100)
782 return -EINVAL;
783 if (t == *ui)
784 return count;
785 *ui = (unsigned int)t;
786 return count;
787 }
788
789 if (!strcmp(a->attr.name, "ipu_policy")) {
790 if (t >= BIT(F2FS_IPU_MAX))
791 return -EINVAL;
792 if (t && f2fs_lfs_mode(sbi))
793 return -EINVAL;
794 SM_I(sbi)->ipu_policy = (unsigned int)t;
795 return count;
796 }
797
798 if (!strcmp(a->attr.name, "dir_level")) {
799 if (t > MAX_DIR_HASH_DEPTH)
800 return -EINVAL;
801 sbi->dir_level = t;
802 return count;
803 }
804
805 *ui = (unsigned int)t;
806
807 return count;
808 }
809
810 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
811 struct f2fs_sb_info *sbi,
812 const char *buf, size_t count)
813 {
814 ssize_t ret;
815 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
816 a->struct_type == GC_THREAD);
817
818 if (gc_entry) {
819 if (!down_read_trylock(&sbi->sb->s_umount))
820 return -EAGAIN;
821 }
822 ret = __sbi_store(a, sbi, buf, count);
823 if (gc_entry)
824 up_read(&sbi->sb->s_umount);
825
826 return ret;
827 }
828
829 static ssize_t f2fs_attr_show(struct kobject *kobj,
830 struct attribute *attr, char *buf)
831 {
832 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
833 s_kobj);
834 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
835
836 return a->show ? a->show(a, sbi, buf) : 0;
837 }
838
839 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
840 const char *buf, size_t len)
841 {
842 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
843 s_kobj);
844 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
845
846 return a->store ? a->store(a, sbi, buf, len) : 0;
847 }
848
849 static void f2fs_sb_release(struct kobject *kobj)
850 {
851 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
852 s_kobj);
853 complete(&sbi->s_kobj_unregister);
854 }
855
856 /*
857 * Note that there are three feature list entries:
858 * 1) /sys/fs/f2fs/features
859 * : shows runtime features supported by in-kernel f2fs along with Kconfig.
860 * - ref. F2FS_FEATURE_RO_ATTR()
861 *
862 * 2) /sys/fs/f2fs/$s_id/features <deprecated>
863 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
864 * won't add new feature anymore, and thus, users should check entries in 3)
865 * instead of this 2).
866 *
867 * 3) /sys/fs/f2fs/$s_id/feature_list
868 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows
869 * sysfs entry rule where each entry should expose single value.
870 * This list covers old feature list provided by 2) and beyond. Therefore,
871 * please add new on-disk feature in this list only.
872 * - ref. F2FS_SB_FEATURE_RO_ATTR()
873 */
874 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
875 struct f2fs_sb_info *sbi, char *buf)
876 {
877 return sysfs_emit(buf, "supported\n");
878 }
879
880 #define F2FS_FEATURE_RO_ATTR(_name) \
881 static struct f2fs_attr f2fs_attr_##_name = { \
882 .attr = {.name = __stringify(_name), .mode = 0444 }, \
883 .show = f2fs_feature_show, \
884 }
885
886 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
887 struct f2fs_sb_info *sbi, char *buf)
888 {
889 if (F2FS_HAS_FEATURE(sbi, a->id))
890 return sysfs_emit(buf, "supported\n");
891 return sysfs_emit(buf, "unsupported\n");
892 }
893
894 #define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \
895 static struct f2fs_attr f2fs_attr_sb_##_name = { \
896 .attr = {.name = __stringify(_name), .mode = 0444 }, \
897 .show = f2fs_sb_feature_show, \
898 .id = F2FS_FEATURE_##_feat, \
899 }
900
901 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
902 static struct f2fs_attr f2fs_attr_##_name = { \
903 .attr = {.name = __stringify(_name), .mode = _mode }, \
904 .show = _show, \
905 .store = _store, \
906 .struct_type = _struct_type, \
907 .offset = _offset \
908 }
909
910 #define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
911 F2FS_ATTR_OFFSET(struct_type, name, 0444, \
912 f2fs_sbi_show, NULL, \
913 offsetof(struct struct_name, elname))
914
915 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
916 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
917 f2fs_sbi_show, f2fs_sbi_store, \
918 offsetof(struct struct_name, elname))
919
920 #define F2FS_GENERAL_RO_ATTR(name) \
921 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
922
923 #ifdef CONFIG_F2FS_STAT_FS
924 #define STAT_INFO_RO_ATTR(name, elname) \
925 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname)
926 #endif
927
928 #define GC_THREAD_RW_ATTR(name, elname) \
929 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname)
930
931 #define SM_INFO_RW_ATTR(name, elname) \
932 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname)
933
934 #define SM_INFO_GENERAL_RW_ATTR(elname) \
935 SM_INFO_RW_ATTR(elname, elname)
936
937 #define DCC_INFO_RW_ATTR(name, elname) \
938 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname)
939
940 #define DCC_INFO_GENERAL_RW_ATTR(elname) \
941 DCC_INFO_RW_ATTR(elname, elname)
942
943 #define NM_INFO_RW_ATTR(name, elname) \
944 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname)
945
946 #define NM_INFO_GENERAL_RW_ATTR(elname) \
947 NM_INFO_RW_ATTR(elname, elname)
948
949 #define F2FS_SBI_RW_ATTR(name, elname) \
950 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname)
951
952 #define F2FS_SBI_GENERAL_RW_ATTR(elname) \
953 F2FS_SBI_RW_ATTR(elname, elname)
954
955 #define F2FS_SBI_GENERAL_RO_ATTR(elname) \
956 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname)
957
958 #ifdef CONFIG_F2FS_FAULT_INJECTION
959 #define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \
960 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname)
961 #endif
962
963 #define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \
964 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname)
965
966 #define CPRC_INFO_GENERAL_RW_ATTR(elname) \
967 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname)
968
969 #define ATGC_INFO_RW_ATTR(name, elname) \
970 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname)
971
972 /* GC_THREAD ATTR */
973 GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
974 GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
975 GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
976 GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
977
978 /* SM_INFO ATTR */
979 SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
980 SM_INFO_GENERAL_RW_ATTR(ipu_policy);
981 SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
982 SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
983 SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
984 SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
985 SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
986
987 /* DCC_INFO ATTR */
988 DCC_INFO_RW_ATTR(max_small_discards, max_discards);
989 DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
990 DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
991 DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
992 DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
993 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
994 DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
995 DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
996 DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
997 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
998
999 /* NM_INFO ATTR */
1000 NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
1001 NM_INFO_GENERAL_RW_ATTR(ram_thresh);
1002 NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
1003 NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
1004
1005 /* F2FS_SBI ATTR */
1006 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
1007 F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
1008 F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
1009 F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
1010 F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
1011 F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
1012 F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
1013 F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
1014 F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
1015 F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
1016 F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
1017 F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
1018 F2FS_SBI_GENERAL_RW_ATTR(migration_window_granularity);
1019 F2FS_SBI_GENERAL_RW_ATTR(dir_level);
1020 #ifdef CONFIG_F2FS_IOSTAT
1021 F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
1022 F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
1023 #endif
1024 F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
1025 F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
1026 F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
1027 F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
1028 F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
1029 F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
1030 F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
1031 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
1032 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
1033 #ifdef CONFIG_F2FS_FS_COMPRESSION
1034 F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
1035 F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
1036 F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
1037 F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
1038 F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
1039 #endif
1040 /* atomic write */
1041 F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
1042 F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
1043 F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
1044 F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
1045 /* block age extent cache */
1046 F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
1047 F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
1048 F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
1049 #ifdef CONFIG_BLK_DEV_ZONED
1050 F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
1051 F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy);
1052 #endif
1053
1054 /* STAT_INFO ATTR */
1055 #ifdef CONFIG_F2FS_STAT_FS
1056 STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
1057 STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
1058 STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
1059 STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
1060 #endif
1061
1062 /* FAULT_INFO ATTR */
1063 #ifdef CONFIG_F2FS_FAULT_INJECTION
1064 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
1065 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
1066 #endif
1067
1068 /* RESERVED_BLOCKS ATTR */
1069 RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
1070
1071 /* CPRC_INFO ATTR */
1072 CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
1073
1074 /* ATGC_INFO ATTR */
1075 ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
1076 ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
1077 ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
1078 ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
1079
1080 F2FS_GENERAL_RO_ATTR(dirty_segments);
1081 F2FS_GENERAL_RO_ATTR(free_segments);
1082 F2FS_GENERAL_RO_ATTR(ovp_segments);
1083 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
1084 F2FS_GENERAL_RO_ATTR(features);
1085 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
1086 F2FS_GENERAL_RO_ATTR(unusable);
1087 F2FS_GENERAL_RO_ATTR(encoding);
1088 F2FS_GENERAL_RO_ATTR(mounted_time_sec);
1089 F2FS_GENERAL_RO_ATTR(main_blkaddr);
1090 F2FS_GENERAL_RO_ATTR(pending_discard);
1091 F2FS_GENERAL_RO_ATTR(gc_mode);
1092 #ifdef CONFIG_F2FS_STAT_FS
1093 F2FS_GENERAL_RO_ATTR(moved_blocks_background);
1094 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
1095 F2FS_GENERAL_RO_ATTR(avg_vblocks);
1096 #endif
1097
1098 #ifdef CONFIG_FS_ENCRYPTION
1099 F2FS_FEATURE_RO_ATTR(encryption);
1100 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
1101 #if IS_ENABLED(CONFIG_UNICODE)
1102 F2FS_FEATURE_RO_ATTR(encrypted_casefold);
1103 #endif
1104 #endif /* CONFIG_FS_ENCRYPTION */
1105 #ifdef CONFIG_BLK_DEV_ZONED
1106 F2FS_FEATURE_RO_ATTR(block_zoned);
1107 #endif
1108 F2FS_FEATURE_RO_ATTR(atomic_write);
1109 F2FS_FEATURE_RO_ATTR(extra_attr);
1110 F2FS_FEATURE_RO_ATTR(project_quota);
1111 F2FS_FEATURE_RO_ATTR(inode_checksum);
1112 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
1113 F2FS_FEATURE_RO_ATTR(quota_ino);
1114 F2FS_FEATURE_RO_ATTR(inode_crtime);
1115 F2FS_FEATURE_RO_ATTR(lost_found);
1116 #ifdef CONFIG_FS_VERITY
1117 F2FS_FEATURE_RO_ATTR(verity);
1118 #endif
1119 F2FS_FEATURE_RO_ATTR(sb_checksum);
1120 #if IS_ENABLED(CONFIG_UNICODE)
1121 F2FS_FEATURE_RO_ATTR(casefold);
1122 #endif
1123 F2FS_FEATURE_RO_ATTR(readonly);
1124 #ifdef CONFIG_F2FS_FS_COMPRESSION
1125 F2FS_FEATURE_RO_ATTR(compression);
1126 #endif
1127 F2FS_FEATURE_RO_ATTR(pin_file);
1128
1129 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
1130 static struct attribute *f2fs_attrs[] = {
1131 ATTR_LIST(gc_urgent_sleep_time),
1132 ATTR_LIST(gc_min_sleep_time),
1133 ATTR_LIST(gc_max_sleep_time),
1134 ATTR_LIST(gc_no_gc_sleep_time),
1135 ATTR_LIST(gc_idle),
1136 ATTR_LIST(gc_urgent),
1137 ATTR_LIST(reclaim_segments),
1138 ATTR_LIST(main_blkaddr),
1139 ATTR_LIST(max_small_discards),
1140 ATTR_LIST(max_discard_request),
1141 ATTR_LIST(min_discard_issue_time),
1142 ATTR_LIST(mid_discard_issue_time),
1143 ATTR_LIST(max_discard_issue_time),
1144 ATTR_LIST(discard_io_aware_gran),
1145 ATTR_LIST(discard_urgent_util),
1146 ATTR_LIST(discard_granularity),
1147 ATTR_LIST(max_ordered_discard),
1148 ATTR_LIST(discard_io_aware),
1149 ATTR_LIST(pending_discard),
1150 ATTR_LIST(gc_mode),
1151 ATTR_LIST(ipu_policy),
1152 ATTR_LIST(min_ipu_util),
1153 ATTR_LIST(min_fsync_blocks),
1154 ATTR_LIST(min_seq_blocks),
1155 ATTR_LIST(min_hot_blocks),
1156 ATTR_LIST(min_ssr_sections),
1157 ATTR_LIST(max_victim_search),
1158 ATTR_LIST(migration_granularity),
1159 ATTR_LIST(migration_window_granularity),
1160 ATTR_LIST(dir_level),
1161 ATTR_LIST(ram_thresh),
1162 ATTR_LIST(ra_nid_pages),
1163 ATTR_LIST(dirty_nats_ratio),
1164 ATTR_LIST(max_roll_forward_node_blocks),
1165 ATTR_LIST(cp_interval),
1166 ATTR_LIST(idle_interval),
1167 ATTR_LIST(discard_idle_interval),
1168 ATTR_LIST(gc_idle_interval),
1169 ATTR_LIST(umount_discard_timeout),
1170 #ifdef CONFIG_F2FS_IOSTAT
1171 ATTR_LIST(iostat_enable),
1172 ATTR_LIST(iostat_period_ms),
1173 #endif
1174 ATTR_LIST(readdir_ra),
1175 ATTR_LIST(max_io_bytes),
1176 ATTR_LIST(gc_pin_file_thresh),
1177 ATTR_LIST(extension_list),
1178 #ifdef CONFIG_F2FS_FAULT_INJECTION
1179 ATTR_LIST(inject_rate),
1180 ATTR_LIST(inject_type),
1181 #endif
1182 ATTR_LIST(data_io_flag),
1183 ATTR_LIST(node_io_flag),
1184 ATTR_LIST(gc_remaining_trials),
1185 ATTR_LIST(ckpt_thread_ioprio),
1186 ATTR_LIST(dirty_segments),
1187 ATTR_LIST(free_segments),
1188 ATTR_LIST(ovp_segments),
1189 ATTR_LIST(unusable),
1190 ATTR_LIST(lifetime_write_kbytes),
1191 ATTR_LIST(features),
1192 ATTR_LIST(reserved_blocks),
1193 ATTR_LIST(current_reserved_blocks),
1194 ATTR_LIST(encoding),
1195 ATTR_LIST(mounted_time_sec),
1196 #ifdef CONFIG_F2FS_STAT_FS
1197 ATTR_LIST(cp_foreground_calls),
1198 ATTR_LIST(cp_background_calls),
1199 ATTR_LIST(gc_foreground_calls),
1200 ATTR_LIST(gc_background_calls),
1201 ATTR_LIST(moved_blocks_foreground),
1202 ATTR_LIST(moved_blocks_background),
1203 ATTR_LIST(avg_vblocks),
1204 #endif
1205 #ifdef CONFIG_BLK_DEV_ZONED
1206 ATTR_LIST(unusable_blocks_per_sec),
1207 ATTR_LIST(blkzone_alloc_policy),
1208 #endif
1209 #ifdef CONFIG_F2FS_FS_COMPRESSION
1210 ATTR_LIST(compr_written_block),
1211 ATTR_LIST(compr_saved_block),
1212 ATTR_LIST(compr_new_inode),
1213 ATTR_LIST(compress_percent),
1214 ATTR_LIST(compress_watermark),
1215 #endif
1216 /* For ATGC */
1217 ATTR_LIST(atgc_candidate_ratio),
1218 ATTR_LIST(atgc_candidate_count),
1219 ATTR_LIST(atgc_age_weight),
1220 ATTR_LIST(atgc_age_threshold),
1221 ATTR_LIST(seq_file_ra_mul),
1222 ATTR_LIST(gc_segment_mode),
1223 ATTR_LIST(gc_reclaimed_segments),
1224 ATTR_LIST(max_fragment_chunk),
1225 ATTR_LIST(max_fragment_hole),
1226 ATTR_LIST(current_atomic_write),
1227 ATTR_LIST(peak_atomic_write),
1228 ATTR_LIST(committed_atomic_block),
1229 ATTR_LIST(revoked_atomic_block),
1230 ATTR_LIST(hot_data_age_threshold),
1231 ATTR_LIST(warm_data_age_threshold),
1232 ATTR_LIST(last_age_weight),
1233 NULL,
1234 };
1235 ATTRIBUTE_GROUPS(f2fs);
1236
1237 static struct attribute *f2fs_feat_attrs[] = {
1238 #ifdef CONFIG_FS_ENCRYPTION
1239 ATTR_LIST(encryption),
1240 ATTR_LIST(test_dummy_encryption_v2),
1241 #if IS_ENABLED(CONFIG_UNICODE)
1242 ATTR_LIST(encrypted_casefold),
1243 #endif
1244 #endif /* CONFIG_FS_ENCRYPTION */
1245 #ifdef CONFIG_BLK_DEV_ZONED
1246 ATTR_LIST(block_zoned),
1247 #endif
1248 ATTR_LIST(atomic_write),
1249 ATTR_LIST(extra_attr),
1250 ATTR_LIST(project_quota),
1251 ATTR_LIST(inode_checksum),
1252 ATTR_LIST(flexible_inline_xattr),
1253 ATTR_LIST(quota_ino),
1254 ATTR_LIST(inode_crtime),
1255 ATTR_LIST(lost_found),
1256 #ifdef CONFIG_FS_VERITY
1257 ATTR_LIST(verity),
1258 #endif
1259 ATTR_LIST(sb_checksum),
1260 #if IS_ENABLED(CONFIG_UNICODE)
1261 ATTR_LIST(casefold),
1262 #endif
1263 ATTR_LIST(readonly),
1264 #ifdef CONFIG_F2FS_FS_COMPRESSION
1265 ATTR_LIST(compression),
1266 #endif
1267 ATTR_LIST(pin_file),
1268 NULL,
1269 };
1270 ATTRIBUTE_GROUPS(f2fs_feat);
1271
1272 F2FS_GENERAL_RO_ATTR(sb_status);
1273 F2FS_GENERAL_RO_ATTR(cp_status);
1274 F2FS_GENERAL_RO_ATTR(issued_discard);
1275 F2FS_GENERAL_RO_ATTR(queued_discard);
1276 F2FS_GENERAL_RO_ATTR(undiscard_blks);
1277
1278 static struct attribute *f2fs_stat_attrs[] = {
1279 ATTR_LIST(sb_status),
1280 ATTR_LIST(cp_status),
1281 ATTR_LIST(issued_discard),
1282 ATTR_LIST(queued_discard),
1283 ATTR_LIST(undiscard_blks),
1284 NULL,
1285 };
1286 ATTRIBUTE_GROUPS(f2fs_stat);
1287
1288 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1289 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1290 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1291 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1292 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1293 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1294 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1295 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1296 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1297 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1298 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1299 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1300 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1301 F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1302
1303 static struct attribute *f2fs_sb_feat_attrs[] = {
1304 ATTR_LIST(sb_encryption),
1305 ATTR_LIST(sb_block_zoned),
1306 ATTR_LIST(sb_extra_attr),
1307 ATTR_LIST(sb_project_quota),
1308 ATTR_LIST(sb_inode_checksum),
1309 ATTR_LIST(sb_flexible_inline_xattr),
1310 ATTR_LIST(sb_quota_ino),
1311 ATTR_LIST(sb_inode_crtime),
1312 ATTR_LIST(sb_lost_found),
1313 ATTR_LIST(sb_verity),
1314 ATTR_LIST(sb_sb_checksum),
1315 ATTR_LIST(sb_casefold),
1316 ATTR_LIST(sb_compression),
1317 ATTR_LIST(sb_readonly),
1318 NULL,
1319 };
1320 ATTRIBUTE_GROUPS(f2fs_sb_feat);
1321
1322 static const struct sysfs_ops f2fs_attr_ops = {
1323 .show = f2fs_attr_show,
1324 .store = f2fs_attr_store,
1325 };
1326
1327 static const struct kobj_type f2fs_sb_ktype = {
1328 .default_groups = f2fs_groups,
1329 .sysfs_ops = &f2fs_attr_ops,
1330 .release = f2fs_sb_release,
1331 };
1332
1333 static const struct kobj_type f2fs_ktype = {
1334 .sysfs_ops = &f2fs_attr_ops,
1335 };
1336
1337 static struct kset f2fs_kset = {
1338 .kobj = {.ktype = &f2fs_ktype},
1339 };
1340
1341 static const struct kobj_type f2fs_feat_ktype = {
1342 .default_groups = f2fs_feat_groups,
1343 .sysfs_ops = &f2fs_attr_ops,
1344 };
1345
1346 static struct kobject f2fs_feat = {
1347 .kset = &f2fs_kset,
1348 };
1349
1350 static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
1351 struct attribute *attr, char *buf)
1352 {
1353 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1354 s_stat_kobj);
1355 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1356
1357 return a->show ? a->show(a, sbi, buf) : 0;
1358 }
1359
1360 static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
1361 const char *buf, size_t len)
1362 {
1363 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1364 s_stat_kobj);
1365 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1366
1367 return a->store ? a->store(a, sbi, buf, len) : 0;
1368 }
1369
1370 static void f2fs_stat_kobj_release(struct kobject *kobj)
1371 {
1372 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1373 s_stat_kobj);
1374 complete(&sbi->s_stat_kobj_unregister);
1375 }
1376
1377 static const struct sysfs_ops f2fs_stat_attr_ops = {
1378 .show = f2fs_stat_attr_show,
1379 .store = f2fs_stat_attr_store,
1380 };
1381
1382 static const struct kobj_type f2fs_stat_ktype = {
1383 .default_groups = f2fs_stat_groups,
1384 .sysfs_ops = &f2fs_stat_attr_ops,
1385 .release = f2fs_stat_kobj_release,
1386 };
1387
1388 static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
1389 struct attribute *attr, char *buf)
1390 {
1391 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1392 s_feature_list_kobj);
1393 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1394
1395 return a->show ? a->show(a, sbi, buf) : 0;
1396 }
1397
1398 static void f2fs_feature_list_kobj_release(struct kobject *kobj)
1399 {
1400 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1401 s_feature_list_kobj);
1402 complete(&sbi->s_feature_list_kobj_unregister);
1403 }
1404
1405 static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1406 .show = f2fs_sb_feat_attr_show,
1407 };
1408
1409 static const struct kobj_type f2fs_feature_list_ktype = {
1410 .default_groups = f2fs_sb_feat_groups,
1411 .sysfs_ops = &f2fs_feature_list_attr_ops,
1412 .release = f2fs_feature_list_kobj_release,
1413 };
1414
1415 static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
1416 void *offset)
1417 {
1418 struct super_block *sb = seq->private;
1419 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1420 unsigned int total_segs =
1421 le32_to_cpu(sbi->raw_super->segment_count_main);
1422 int i;
1423
1424 seq_puts(seq, "format: segment_type|valid_blocks\n"
1425 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1426
1427 for (i = 0; i < total_segs; i++) {
1428 struct seg_entry *se = get_seg_entry(sbi, i);
1429
1430 if ((i % 10) == 0)
1431 seq_printf(seq, "%-10d", i);
1432 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
1433 if ((i % 10) == 9 || i == (total_segs - 1))
1434 seq_putc(seq, '\n');
1435 else
1436 seq_putc(seq, ' ');
1437 }
1438
1439 return 0;
1440 }
1441
1442 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
1443 void *offset)
1444 {
1445 struct super_block *sb = seq->private;
1446 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1447 unsigned int total_segs =
1448 le32_to_cpu(sbi->raw_super->segment_count_main);
1449 int i, j;
1450
1451 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
1452 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1453
1454 for (i = 0; i < total_segs; i++) {
1455 struct seg_entry *se = get_seg_entry(sbi, i);
1456
1457 seq_printf(seq, "%-10d", i);
1458 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
1459 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
1460 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
1461 seq_putc(seq, '\n');
1462 }
1463 return 0;
1464 }
1465
1466 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
1467 void *offset)
1468 {
1469 struct super_block *sb = seq->private;
1470 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1471 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1472 int i;
1473
1474 seq_puts(seq, "format: victim_secmap bitmaps\n");
1475
1476 for (i = 0; i < MAIN_SECS(sbi); i++) {
1477 if ((i % 10) == 0)
1478 seq_printf(seq, "%-10d", i);
1479 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
1480 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
1481 seq_putc(seq, '\n');
1482 else
1483 seq_putc(seq, ' ');
1484 }
1485 return 0;
1486 }
1487
1488 static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
1489 void *offset)
1490 {
1491 struct super_block *sb = seq->private;
1492 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1493 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1494 int i, count;
1495
1496 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n");
1497 if (!f2fs_realtime_discard_enable(sbi))
1498 return 0;
1499
1500 if (dcc) {
1501 mutex_lock(&dcc->cmd_lock);
1502 for (i = 0; i < MAX_PLIST_NUM; i++) {
1503 struct list_head *pend_list;
1504 struct discard_cmd *dc, *tmp;
1505
1506 if (i % 8 == 0)
1507 seq_printf(seq, " %-3d", i);
1508 count = 0;
1509 pend_list = &dcc->pend_list[i];
1510 list_for_each_entry_safe(dc, tmp, pend_list, list)
1511 count++;
1512 if (count)
1513 seq_printf(seq, " %7d", count);
1514 else
1515 seq_puts(seq, " .");
1516 if (i % 8 == 7)
1517 seq_putc(seq, '\n');
1518 }
1519 seq_putc(seq, '\n');
1520 mutex_unlock(&dcc->cmd_lock);
1521 }
1522
1523 return 0;
1524 }
1525
1526 static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
1527 void *offset)
1528 {
1529 struct super_block *sb = seq->private;
1530 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1531 int i;
1532
1533 seq_printf(seq, "Address Layout : %5luB Block address (# of Segments)\n",
1534 F2FS_BLKSIZE);
1535 seq_printf(seq, " SB : %12s\n", "0/1024B");
1536 seq_printf(seq, " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi));
1537 seq_printf(seq, " Checkpoint : 0x%010x (%10d)\n",
1538 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2);
1539 seq_printf(seq, " SIT : 0x%010x (%10d)\n",
1540 SIT_I(sbi)->sit_base_addr,
1541 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit));
1542 seq_printf(seq, " NAT : 0x%010x (%10d)\n",
1543 NM_I(sbi)->nat_blkaddr,
1544 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat));
1545 seq_printf(seq, " SSA : 0x%010x (%10d)\n",
1546 SM_I(sbi)->ssa_blkaddr,
1547 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa));
1548 seq_printf(seq, " Main : 0x%010x (%10d)\n",
1549 SM_I(sbi)->main_blkaddr,
1550 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
1551 seq_printf(seq, " # of Sections : %12d\n",
1552 le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
1553 seq_printf(seq, " Segs/Sections : %12d\n",
1554 SEGS_PER_SEC(sbi));
1555 seq_printf(seq, " Section size : %12d MB\n",
1556 SEGS_PER_SEC(sbi) << 1);
1557
1558 if (!f2fs_is_multi_device(sbi))
1559 return 0;
1560
1561 seq_puts(seq, "\nDisk Map for multi devices:\n");
1562 for (i = 0; i < sbi->s_ndevs; i++)
1563 seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n",
1564 i, bdev_is_zoned(FDEV(i).bdev),
1565 FDEV(i).start_blk, FDEV(i).end_blk,
1566 FDEV(i).path);
1567 return 0;
1568 }
1569
1570 int __init f2fs_init_sysfs(void)
1571 {
1572 int ret;
1573
1574 kobject_set_name(&f2fs_kset.kobj, "f2fs");
1575 f2fs_kset.kobj.parent = fs_kobj;
1576 ret = kset_register(&f2fs_kset);
1577 if (ret)
1578 return ret;
1579
1580 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
1581 NULL, "features");
1582 if (ret)
1583 goto put_kobject;
1584
1585 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
1586 if (!f2fs_proc_root) {
1587 ret = -ENOMEM;
1588 goto put_kobject;
1589 }
1590
1591 return 0;
1592 put_kobject:
1593 kobject_put(&f2fs_feat);
1594 kset_unregister(&f2fs_kset);
1595 return ret;
1596 }
1597
1598 void f2fs_exit_sysfs(void)
1599 {
1600 kobject_put(&f2fs_feat);
1601 kset_unregister(&f2fs_kset);
1602 remove_proc_entry("fs/f2fs", NULL);
1603 f2fs_proc_root = NULL;
1604 }
1605
1606 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
1607 {
1608 struct super_block *sb = sbi->sb;
1609 int err;
1610
1611 sbi->s_kobj.kset = &f2fs_kset;
1612 init_completion(&sbi->s_kobj_unregister);
1613 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
1614 "%s", sb->s_id);
1615 if (err)
1616 goto put_sb_kobj;
1617
1618 sbi->s_stat_kobj.kset = &f2fs_kset;
1619 init_completion(&sbi->s_stat_kobj_unregister);
1620 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
1621 &sbi->s_kobj, "stat");
1622 if (err)
1623 goto put_stat_kobj;
1624
1625 sbi->s_feature_list_kobj.kset = &f2fs_kset;
1626 init_completion(&sbi->s_feature_list_kobj_unregister);
1627 err = kobject_init_and_add(&sbi->s_feature_list_kobj,
1628 &f2fs_feature_list_ktype,
1629 &sbi->s_kobj, "feature_list");
1630 if (err)
1631 goto put_feature_list_kobj;
1632
1633 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
1634 if (!sbi->s_proc) {
1635 err = -ENOMEM;
1636 goto put_feature_list_kobj;
1637 }
1638
1639 proc_create_single_data("segment_info", 0444, sbi->s_proc,
1640 segment_info_seq_show, sb);
1641 proc_create_single_data("segment_bits", 0444, sbi->s_proc,
1642 segment_bits_seq_show, sb);
1643 #ifdef CONFIG_F2FS_IOSTAT
1644 proc_create_single_data("iostat_info", 0444, sbi->s_proc,
1645 iostat_info_seq_show, sb);
1646 #endif
1647 proc_create_single_data("victim_bits", 0444, sbi->s_proc,
1648 victim_bits_seq_show, sb);
1649 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
1650 discard_plist_seq_show, sb);
1651 proc_create_single_data("disk_map", 0444, sbi->s_proc,
1652 disk_map_seq_show, sb);
1653 return 0;
1654 put_feature_list_kobj:
1655 kobject_put(&sbi->s_feature_list_kobj);
1656 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1657 put_stat_kobj:
1658 kobject_put(&sbi->s_stat_kobj);
1659 wait_for_completion(&sbi->s_stat_kobj_unregister);
1660 put_sb_kobj:
1661 kobject_put(&sbi->s_kobj);
1662 wait_for_completion(&sbi->s_kobj_unregister);
1663 return err;
1664 }
1665
1666 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
1667 {
1668 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root);
1669
1670 kobject_put(&sbi->s_stat_kobj);
1671 wait_for_completion(&sbi->s_stat_kobj_unregister);
1672 kobject_put(&sbi->s_feature_list_kobj);
1673 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1674
1675 kobject_put(&sbi->s_kobj);
1676 wait_for_completion(&sbi->s_kobj_unregister);
1677 }
1678
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