Loading...
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
23static struct proc_dir_entry *f2fs_proc_root;
24
25/* Sysfs support for f2fs */
26enum {
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
44static 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
54struct 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
64static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
65 struct f2fs_sb_info *sbi, char *buf);
66
67static 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
95static 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
102static 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
109static 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
116static 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
125static 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
131static 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
137static 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
146static 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
155static 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
164static 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
173static ssize_t atgc_enabled_show(struct f2fs_attr *a,
174 struct f2fs_sb_info *sbi, char *buf)
175{
176 return sysfs_emit(buf, "%d\n", sbi->am.atgc_enabled ? 1 : 0);
177}
178
179static ssize_t gc_mode_show(struct f2fs_attr *a,
180 struct f2fs_sb_info *sbi, char *buf)
181{
182 return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]);
183}
184
185static ssize_t features_show(struct f2fs_attr *a,
186 struct f2fs_sb_info *sbi, char *buf)
187{
188 int len = 0;
189
190 if (f2fs_sb_has_encrypt(sbi))
191 len += sysfs_emit_at(buf, len, "%s",
192 "encryption");
193 if (f2fs_sb_has_blkzoned(sbi))
194 len += sysfs_emit_at(buf, len, "%s%s",
195 len ? ", " : "", "blkzoned");
196 if (f2fs_sb_has_extra_attr(sbi))
197 len += sysfs_emit_at(buf, len, "%s%s",
198 len ? ", " : "", "extra_attr");
199 if (f2fs_sb_has_project_quota(sbi))
200 len += sysfs_emit_at(buf, len, "%s%s",
201 len ? ", " : "", "projquota");
202 if (f2fs_sb_has_inode_chksum(sbi))
203 len += sysfs_emit_at(buf, len, "%s%s",
204 len ? ", " : "", "inode_checksum");
205 if (f2fs_sb_has_flexible_inline_xattr(sbi))
206 len += sysfs_emit_at(buf, len, "%s%s",
207 len ? ", " : "", "flexible_inline_xattr");
208 if (f2fs_sb_has_quota_ino(sbi))
209 len += sysfs_emit_at(buf, len, "%s%s",
210 len ? ", " : "", "quota_ino");
211 if (f2fs_sb_has_inode_crtime(sbi))
212 len += sysfs_emit_at(buf, len, "%s%s",
213 len ? ", " : "", "inode_crtime");
214 if (f2fs_sb_has_lost_found(sbi))
215 len += sysfs_emit_at(buf, len, "%s%s",
216 len ? ", " : "", "lost_found");
217 if (f2fs_sb_has_verity(sbi))
218 len += sysfs_emit_at(buf, len, "%s%s",
219 len ? ", " : "", "verity");
220 if (f2fs_sb_has_sb_chksum(sbi))
221 len += sysfs_emit_at(buf, len, "%s%s",
222 len ? ", " : "", "sb_checksum");
223 if (f2fs_sb_has_casefold(sbi))
224 len += sysfs_emit_at(buf, len, "%s%s",
225 len ? ", " : "", "casefold");
226 if (f2fs_sb_has_readonly(sbi))
227 len += sysfs_emit_at(buf, len, "%s%s",
228 len ? ", " : "", "readonly");
229 if (f2fs_sb_has_compression(sbi))
230 len += sysfs_emit_at(buf, len, "%s%s",
231 len ? ", " : "", "compression");
232 len += sysfs_emit_at(buf, len, "%s%s",
233 len ? ", " : "", "pin_file");
234 len += sysfs_emit_at(buf, len, "\n");
235 return len;
236}
237
238static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
239 struct f2fs_sb_info *sbi, char *buf)
240{
241 return sysfs_emit(buf, "%u\n", sbi->current_reserved_blocks);
242}
243
244static ssize_t unusable_show(struct f2fs_attr *a,
245 struct f2fs_sb_info *sbi, char *buf)
246{
247 block_t unusable;
248
249 if (test_opt(sbi, DISABLE_CHECKPOINT))
250 unusable = sbi->unusable_block_count;
251 else
252 unusable = f2fs_get_unusable_blocks(sbi);
253 return sysfs_emit(buf, "%llu\n", (unsigned long long)unusable);
254}
255
256static ssize_t encoding_show(struct f2fs_attr *a,
257 struct f2fs_sb_info *sbi, char *buf)
258{
259#if IS_ENABLED(CONFIG_UNICODE)
260 struct super_block *sb = sbi->sb;
261
262 if (f2fs_sb_has_casefold(sbi))
263 return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n",
264 (sb->s_encoding->version >> 16) & 0xff,
265 (sb->s_encoding->version >> 8) & 0xff,
266 sb->s_encoding->version & 0xff);
267#endif
268 return sysfs_emit(buf, "(none)\n");
269}
270
271static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
272 struct f2fs_sb_info *sbi, char *buf)
273{
274 return sysfs_emit(buf, "%llu\n", SIT_I(sbi)->mounted_time);
275}
276
277#ifdef CONFIG_F2FS_STAT_FS
278static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
279 struct f2fs_sb_info *sbi, char *buf)
280{
281 struct f2fs_stat_info *si = F2FS_STAT(sbi);
282
283 return sysfs_emit(buf, "%llu\n",
284 (unsigned long long)(si->tot_blks -
285 (si->bg_data_blks + si->bg_node_blks)));
286}
287
288static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
289 struct f2fs_sb_info *sbi, char *buf)
290{
291 struct f2fs_stat_info *si = F2FS_STAT(sbi);
292
293 return sysfs_emit(buf, "%llu\n",
294 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
295}
296
297static ssize_t avg_vblocks_show(struct f2fs_attr *a,
298 struct f2fs_sb_info *sbi, char *buf)
299{
300 struct f2fs_stat_info *si = F2FS_STAT(sbi);
301
302 si->dirty_count = dirty_segments(sbi);
303 f2fs_update_sit_info(sbi);
304 return sysfs_emit(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
305}
306#endif
307
308static ssize_t main_blkaddr_show(struct f2fs_attr *a,
309 struct f2fs_sb_info *sbi, char *buf)
310{
311 return sysfs_emit(buf, "%llu\n",
312 (unsigned long long)MAIN_BLKADDR(sbi));
313}
314
315static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
316 struct f2fs_sb_info *sbi, char *buf)
317{
318 unsigned char *ptr = NULL;
319 unsigned int *ui;
320
321 ptr = __struct_ptr(sbi, a->struct_type);
322 if (!ptr)
323 return -EINVAL;
324
325 if (!strcmp(a->attr.name, "extension_list")) {
326 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
327 sbi->raw_super->extension_list;
328 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
329 int hot_count = sbi->raw_super->hot_ext_count;
330 int len = 0, i;
331
332 len += sysfs_emit_at(buf, len, "cold file extension:\n");
333 for (i = 0; i < cold_count; i++)
334 len += sysfs_emit_at(buf, len, "%s\n", extlist[i]);
335
336 len += sysfs_emit_at(buf, len, "hot file extension:\n");
337 for (i = cold_count; i < cold_count + hot_count; i++)
338 len += sysfs_emit_at(buf, len, "%s\n", extlist[i]);
339
340 return len;
341 }
342
343 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
344 struct ckpt_req_control *cprc = &sbi->cprc_info;
345 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
346 int level = IOPRIO_PRIO_LEVEL(cprc->ckpt_thread_ioprio);
347
348 if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE)
349 return -EINVAL;
350
351 return sysfs_emit(buf, "%s,%d\n",
352 class == IOPRIO_CLASS_RT ? "rt" : "be", level);
353 }
354
355#ifdef CONFIG_F2FS_FS_COMPRESSION
356 if (!strcmp(a->attr.name, "compr_written_block"))
357 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block);
358
359 if (!strcmp(a->attr.name, "compr_saved_block"))
360 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block);
361
362 if (!strcmp(a->attr.name, "compr_new_inode"))
363 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode);
364#endif
365
366 if (!strcmp(a->attr.name, "gc_segment_mode"))
367 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode);
368
369 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
370 return sysfs_emit(buf, "%u\n",
371 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]);
372 }
373
374 if (!strcmp(a->attr.name, "current_atomic_write")) {
375 s64 current_write = atomic64_read(&sbi->current_atomic_write);
376
377 return sysfs_emit(buf, "%lld\n", current_write);
378 }
379
380 if (!strcmp(a->attr.name, "peak_atomic_write"))
381 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write);
382
383 if (!strcmp(a->attr.name, "committed_atomic_block"))
384 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block);
385
386 if (!strcmp(a->attr.name, "revoked_atomic_block"))
387 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block);
388
389#ifdef CONFIG_F2FS_STAT_FS
390 if (!strcmp(a->attr.name, "cp_foreground_calls"))
391 return sysfs_emit(buf, "%d\n",
392 atomic_read(&sbi->cp_call_count[TOTAL_CALL]) -
393 atomic_read(&sbi->cp_call_count[BACKGROUND]));
394 if (!strcmp(a->attr.name, "cp_background_calls"))
395 return sysfs_emit(buf, "%d\n",
396 atomic_read(&sbi->cp_call_count[BACKGROUND]));
397#endif
398
399 ui = (unsigned int *)(ptr + a->offset);
400
401 return sysfs_emit(buf, "%u\n", *ui);
402}
403
404static ssize_t __sbi_store(struct f2fs_attr *a,
405 struct f2fs_sb_info *sbi,
406 const char *buf, size_t count)
407{
408 unsigned char *ptr;
409 unsigned long t;
410 unsigned int *ui;
411 ssize_t ret;
412
413 ptr = __struct_ptr(sbi, a->struct_type);
414 if (!ptr)
415 return -EINVAL;
416
417 if (!strcmp(a->attr.name, "extension_list")) {
418 const char *name = strim((char *)buf);
419 bool set = true, hot;
420
421 if (!strncmp(name, "[h]", 3))
422 hot = true;
423 else if (!strncmp(name, "[c]", 3))
424 hot = false;
425 else
426 return -EINVAL;
427
428 name += 3;
429
430 if (*name == '!') {
431 name++;
432 set = false;
433 }
434
435 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN)
436 return -EINVAL;
437
438 f2fs_down_write(&sbi->sb_lock);
439
440 ret = f2fs_update_extension_list(sbi, name, hot, set);
441 if (ret)
442 goto out;
443
444 ret = f2fs_commit_super(sbi, false);
445 if (ret)
446 f2fs_update_extension_list(sbi, name, hot, !set);
447out:
448 f2fs_up_write(&sbi->sb_lock);
449 return ret ? ret : count;
450 }
451
452 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
453 const char *name = strim((char *)buf);
454 struct ckpt_req_control *cprc = &sbi->cprc_info;
455 int class;
456 long level;
457 int ret;
458
459 if (!strncmp(name, "rt,", 3))
460 class = IOPRIO_CLASS_RT;
461 else if (!strncmp(name, "be,", 3))
462 class = IOPRIO_CLASS_BE;
463 else
464 return -EINVAL;
465
466 name += 3;
467 ret = kstrtol(name, 10, &level);
468 if (ret)
469 return ret;
470 if (level >= IOPRIO_NR_LEVELS || level < 0)
471 return -EINVAL;
472
473 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, level);
474 if (test_opt(sbi, MERGE_CHECKPOINT)) {
475 ret = set_task_ioprio(cprc->f2fs_issue_ckpt,
476 cprc->ckpt_thread_ioprio);
477 if (ret)
478 return ret;
479 }
480
481 return count;
482 }
483
484 ui = (unsigned int *)(ptr + a->offset);
485
486 ret = kstrtoul(skip_spaces(buf), 0, &t);
487 if (ret < 0)
488 return ret;
489#ifdef CONFIG_F2FS_FAULT_INJECTION
490 if (a->struct_type == FAULT_INFO_TYPE) {
491 if (f2fs_build_fault_attr(sbi, 0, t))
492 return -EINVAL;
493 return count;
494 }
495 if (a->struct_type == FAULT_INFO_RATE) {
496 if (f2fs_build_fault_attr(sbi, t, 0))
497 return -EINVAL;
498 return count;
499 }
500#endif
501 if (a->struct_type == RESERVED_BLOCKS) {
502 spin_lock(&sbi->stat_lock);
503 if (t > (unsigned long)(sbi->user_block_count -
504 F2FS_OPTION(sbi).root_reserved_blocks)) {
505 spin_unlock(&sbi->stat_lock);
506 return -EINVAL;
507 }
508 *ui = t;
509 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
510 sbi->user_block_count - valid_user_blocks(sbi));
511 spin_unlock(&sbi->stat_lock);
512 return count;
513 }
514
515 if (!strcmp(a->attr.name, "discard_io_aware_gran")) {
516 if (t > MAX_PLIST_NUM)
517 return -EINVAL;
518 if (!f2fs_block_unit_discard(sbi))
519 return -EINVAL;
520 if (t == *ui)
521 return count;
522 *ui = t;
523 return count;
524 }
525
526 if (!strcmp(a->attr.name, "discard_granularity")) {
527 if (t == 0 || t > MAX_PLIST_NUM)
528 return -EINVAL;
529 if (!f2fs_block_unit_discard(sbi))
530 return -EINVAL;
531 if (t == *ui)
532 return count;
533 *ui = t;
534 return count;
535 }
536
537 if (!strcmp(a->attr.name, "max_ordered_discard")) {
538 if (t == 0 || t > MAX_PLIST_NUM)
539 return -EINVAL;
540 if (!f2fs_block_unit_discard(sbi))
541 return -EINVAL;
542 *ui = t;
543 return count;
544 }
545
546 if (!strcmp(a->attr.name, "discard_urgent_util")) {
547 if (t > 100)
548 return -EINVAL;
549 *ui = t;
550 return count;
551 }
552
553 if (!strcmp(a->attr.name, "discard_io_aware")) {
554 if (t >= DPOLICY_IO_AWARE_MAX)
555 return -EINVAL;
556 *ui = t;
557 return count;
558 }
559
560 if (!strcmp(a->attr.name, "migration_granularity")) {
561 if (t == 0 || t > SEGS_PER_SEC(sbi))
562 return -EINVAL;
563 }
564
565 if (!strcmp(a->attr.name, "migration_window_granularity")) {
566 if (t == 0 || t > SEGS_PER_SEC(sbi))
567 return -EINVAL;
568 }
569
570 if (!strcmp(a->attr.name, "gc_urgent")) {
571 if (t == 0) {
572 sbi->gc_mode = GC_NORMAL;
573 } else if (t == 1) {
574 sbi->gc_mode = GC_URGENT_HIGH;
575 if (sbi->gc_thread) {
576 sbi->gc_thread->gc_wake = true;
577 wake_up_interruptible_all(
578 &sbi->gc_thread->gc_wait_queue_head);
579 wake_up_discard_thread(sbi, true);
580 }
581 } else if (t == 2) {
582 sbi->gc_mode = GC_URGENT_LOW;
583 } else if (t == 3) {
584 sbi->gc_mode = GC_URGENT_MID;
585 if (sbi->gc_thread) {
586 sbi->gc_thread->gc_wake = true;
587 wake_up_interruptible_all(
588 &sbi->gc_thread->gc_wait_queue_head);
589 }
590 } else {
591 return -EINVAL;
592 }
593 return count;
594 }
595 if (!strcmp(a->attr.name, "gc_idle")) {
596 if (t == GC_IDLE_CB) {
597 sbi->gc_mode = GC_IDLE_CB;
598 } else if (t == GC_IDLE_GREEDY) {
599 sbi->gc_mode = GC_IDLE_GREEDY;
600 } else if (t == GC_IDLE_AT) {
601 if (!sbi->am.atgc_enabled)
602 return -EINVAL;
603 sbi->gc_mode = GC_IDLE_AT;
604 } else {
605 sbi->gc_mode = GC_NORMAL;
606 }
607 return count;
608 }
609
610 if (!strcmp(a->attr.name, "gc_remaining_trials")) {
611 spin_lock(&sbi->gc_remaining_trials_lock);
612 sbi->gc_remaining_trials = t;
613 spin_unlock(&sbi->gc_remaining_trials_lock);
614
615 return count;
616 }
617
618#ifdef CONFIG_F2FS_IOSTAT
619 if (!strcmp(a->attr.name, "iostat_enable")) {
620 sbi->iostat_enable = !!t;
621 if (!sbi->iostat_enable)
622 f2fs_reset_iostat(sbi);
623 return count;
624 }
625
626 if (!strcmp(a->attr.name, "iostat_period_ms")) {
627 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
628 return -EINVAL;
629 spin_lock_irq(&sbi->iostat_lock);
630 sbi->iostat_period_ms = (unsigned int)t;
631 spin_unlock_irq(&sbi->iostat_lock);
632 return count;
633 }
634#endif
635
636#ifdef CONFIG_BLK_DEV_ZONED
637 if (!strcmp(a->attr.name, "blkzone_alloc_policy")) {
638 if (t < BLKZONE_ALLOC_PRIOR_SEQ || t > BLKZONE_ALLOC_PRIOR_CONV)
639 return -EINVAL;
640 sbi->blkzone_alloc_policy = t;
641 return count;
642 }
643#endif
644
645#ifdef CONFIG_F2FS_FS_COMPRESSION
646 if (!strcmp(a->attr.name, "compr_written_block") ||
647 !strcmp(a->attr.name, "compr_saved_block")) {
648 if (t != 0)
649 return -EINVAL;
650 sbi->compr_written_block = 0;
651 sbi->compr_saved_block = 0;
652 return count;
653 }
654
655 if (!strcmp(a->attr.name, "compr_new_inode")) {
656 if (t != 0)
657 return -EINVAL;
658 sbi->compr_new_inode = 0;
659 return count;
660 }
661
662 if (!strcmp(a->attr.name, "compress_percent")) {
663 if (t == 0 || t > 100)
664 return -EINVAL;
665 *ui = t;
666 return count;
667 }
668
669 if (!strcmp(a->attr.name, "compress_watermark")) {
670 if (t == 0 || t > 100)
671 return -EINVAL;
672 *ui = t;
673 return count;
674 }
675#endif
676
677 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
678 if (t > 100)
679 return -EINVAL;
680 sbi->am.candidate_ratio = t;
681 return count;
682 }
683
684 if (!strcmp(a->attr.name, "atgc_age_weight")) {
685 if (t > 100)
686 return -EINVAL;
687 sbi->am.age_weight = t;
688 return count;
689 }
690
691 if (!strcmp(a->attr.name, "gc_segment_mode")) {
692 if (t < MAX_GC_MODE)
693 sbi->gc_segment_mode = t;
694 else
695 return -EINVAL;
696 return count;
697 }
698
699 if (!strcmp(a->attr.name, "gc_pin_file_threshold")) {
700 if (t > MAX_GC_FAILED_PINNED_FILES)
701 return -EINVAL;
702 sbi->gc_pin_file_threshold = t;
703 return count;
704 }
705
706 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
707 if (t != 0)
708 return -EINVAL;
709 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0;
710 return count;
711 }
712
713 if (!strcmp(a->attr.name, "seq_file_ra_mul")) {
714 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL)
715 sbi->seq_file_ra_mul = t;
716 else
717 return -EINVAL;
718 return count;
719 }
720
721 if (!strcmp(a->attr.name, "max_fragment_chunk")) {
722 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
723 sbi->max_fragment_chunk = t;
724 else
725 return -EINVAL;
726 return count;
727 }
728
729 if (!strcmp(a->attr.name, "max_fragment_hole")) {
730 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
731 sbi->max_fragment_hole = t;
732 else
733 return -EINVAL;
734 return count;
735 }
736
737 if (!strcmp(a->attr.name, "peak_atomic_write")) {
738 if (t != 0)
739 return -EINVAL;
740 sbi->peak_atomic_write = 0;
741 return count;
742 }
743
744 if (!strcmp(a->attr.name, "committed_atomic_block")) {
745 if (t != 0)
746 return -EINVAL;
747 sbi->committed_atomic_block = 0;
748 return count;
749 }
750
751 if (!strcmp(a->attr.name, "revoked_atomic_block")) {
752 if (t != 0)
753 return -EINVAL;
754 sbi->revoked_atomic_block = 0;
755 return count;
756 }
757
758 if (!strcmp(a->attr.name, "readdir_ra")) {
759 sbi->readdir_ra = !!t;
760 return count;
761 }
762
763 if (!strcmp(a->attr.name, "hot_data_age_threshold")) {
764 if (t == 0 || t >= sbi->warm_data_age_threshold)
765 return -EINVAL;
766 if (t == *ui)
767 return count;
768 *ui = (unsigned int)t;
769 return count;
770 }
771
772 if (!strcmp(a->attr.name, "warm_data_age_threshold")) {
773 if (t <= sbi->hot_data_age_threshold)
774 return -EINVAL;
775 if (t == *ui)
776 return count;
777 *ui = (unsigned int)t;
778 return count;
779 }
780
781 if (!strcmp(a->attr.name, "last_age_weight")) {
782 if (t > 100)
783 return -EINVAL;
784 if (t == *ui)
785 return count;
786 *ui = (unsigned int)t;
787 return count;
788 }
789
790 if (!strcmp(a->attr.name, "max_read_extent_count")) {
791 if (t > UINT_MAX)
792 return -EINVAL;
793 *ui = (unsigned int)t;
794 return count;
795 }
796
797 if (!strcmp(a->attr.name, "ipu_policy")) {
798 if (t >= BIT(F2FS_IPU_MAX))
799 return -EINVAL;
800 /* allow F2FS_IPU_NOCACHE only for IPU in the pinned file */
801 if (f2fs_lfs_mode(sbi) && (t & ~BIT(F2FS_IPU_NOCACHE)))
802 return -EINVAL;
803 SM_I(sbi)->ipu_policy = (unsigned int)t;
804 return count;
805 }
806
807 if (!strcmp(a->attr.name, "dir_level")) {
808 if (t > MAX_DIR_HASH_DEPTH)
809 return -EINVAL;
810 sbi->dir_level = t;
811 return count;
812 }
813
814 *ui = (unsigned int)t;
815
816 return count;
817}
818
819static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
820 struct f2fs_sb_info *sbi,
821 const char *buf, size_t count)
822{
823 ssize_t ret;
824 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
825 a->struct_type == GC_THREAD);
826
827 if (gc_entry) {
828 if (!down_read_trylock(&sbi->sb->s_umount))
829 return -EAGAIN;
830 }
831 ret = __sbi_store(a, sbi, buf, count);
832 if (gc_entry)
833 up_read(&sbi->sb->s_umount);
834
835 return ret;
836}
837
838static ssize_t f2fs_attr_show(struct kobject *kobj,
839 struct attribute *attr, char *buf)
840{
841 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
842 s_kobj);
843 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
844
845 return a->show ? a->show(a, sbi, buf) : 0;
846}
847
848static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
849 const char *buf, size_t len)
850{
851 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
852 s_kobj);
853 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
854
855 return a->store ? a->store(a, sbi, buf, len) : 0;
856}
857
858static void f2fs_sb_release(struct kobject *kobj)
859{
860 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
861 s_kobj);
862 complete(&sbi->s_kobj_unregister);
863}
864
865/*
866 * Note that there are three feature list entries:
867 * 1) /sys/fs/f2fs/features
868 * : shows runtime features supported by in-kernel f2fs along with Kconfig.
869 * - ref. F2FS_FEATURE_RO_ATTR()
870 *
871 * 2) /sys/fs/f2fs/$s_id/features <deprecated>
872 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
873 * won't add new feature anymore, and thus, users should check entries in 3)
874 * instead of this 2).
875 *
876 * 3) /sys/fs/f2fs/$s_id/feature_list
877 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows
878 * sysfs entry rule where each entry should expose single value.
879 * This list covers old feature list provided by 2) and beyond. Therefore,
880 * please add new on-disk feature in this list only.
881 * - ref. F2FS_SB_FEATURE_RO_ATTR()
882 */
883static ssize_t f2fs_feature_show(struct f2fs_attr *a,
884 struct f2fs_sb_info *sbi, char *buf)
885{
886 return sysfs_emit(buf, "supported\n");
887}
888
889#define F2FS_FEATURE_RO_ATTR(_name) \
890static struct f2fs_attr f2fs_attr_##_name = { \
891 .attr = {.name = __stringify(_name), .mode = 0444 }, \
892 .show = f2fs_feature_show, \
893}
894
895static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
896 struct f2fs_sb_info *sbi, char *buf)
897{
898 if (F2FS_HAS_FEATURE(sbi, a->id))
899 return sysfs_emit(buf, "supported\n");
900 return sysfs_emit(buf, "unsupported\n");
901}
902
903#define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \
904static struct f2fs_attr f2fs_attr_sb_##_name = { \
905 .attr = {.name = __stringify(_name), .mode = 0444 }, \
906 .show = f2fs_sb_feature_show, \
907 .id = F2FS_FEATURE_##_feat, \
908}
909
910#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
911static struct f2fs_attr f2fs_attr_##_name = { \
912 .attr = {.name = __stringify(_name), .mode = _mode }, \
913 .show = _show, \
914 .store = _store, \
915 .struct_type = _struct_type, \
916 .offset = _offset \
917}
918
919#define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
920 F2FS_ATTR_OFFSET(struct_type, name, 0444, \
921 f2fs_sbi_show, NULL, \
922 offsetof(struct struct_name, elname))
923
924#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
925 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
926 f2fs_sbi_show, f2fs_sbi_store, \
927 offsetof(struct struct_name, elname))
928
929#define F2FS_GENERAL_RO_ATTR(name) \
930static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
931
932#ifdef CONFIG_F2FS_STAT_FS
933#define STAT_INFO_RO_ATTR(name, elname) \
934 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname)
935#endif
936
937#define GC_THREAD_RW_ATTR(name, elname) \
938 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname)
939
940#define SM_INFO_RW_ATTR(name, elname) \
941 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname)
942
943#define SM_INFO_GENERAL_RW_ATTR(elname) \
944 SM_INFO_RW_ATTR(elname, elname)
945
946#define DCC_INFO_RW_ATTR(name, elname) \
947 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname)
948
949#define DCC_INFO_GENERAL_RW_ATTR(elname) \
950 DCC_INFO_RW_ATTR(elname, elname)
951
952#define NM_INFO_RW_ATTR(name, elname) \
953 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname)
954
955#define NM_INFO_GENERAL_RW_ATTR(elname) \
956 NM_INFO_RW_ATTR(elname, elname)
957
958#define F2FS_SBI_RW_ATTR(name, elname) \
959 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname)
960
961#define F2FS_SBI_GENERAL_RW_ATTR(elname) \
962 F2FS_SBI_RW_ATTR(elname, elname)
963
964#define F2FS_SBI_GENERAL_RO_ATTR(elname) \
965 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname)
966
967#ifdef CONFIG_F2FS_FAULT_INJECTION
968#define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \
969 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname)
970#endif
971
972#define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \
973 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname)
974
975#define CPRC_INFO_GENERAL_RW_ATTR(elname) \
976 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname)
977
978#define ATGC_INFO_RW_ATTR(name, elname) \
979 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname)
980
981/* GC_THREAD ATTR */
982GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
983GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
984GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
985GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
986GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent);
987GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent);
988GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio);
989
990/* SM_INFO ATTR */
991SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
992SM_INFO_GENERAL_RW_ATTR(ipu_policy);
993SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
994SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
995SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
996SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
997SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
998SM_INFO_GENERAL_RW_ATTR(reserved_segments);
999
1000/* DCC_INFO ATTR */
1001DCC_INFO_RW_ATTR(max_small_discards, max_discards);
1002DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
1003DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
1004DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
1005DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
1006DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
1007DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
1008DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
1009DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
1010DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
1011
1012/* NM_INFO ATTR */
1013NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
1014NM_INFO_GENERAL_RW_ATTR(ram_thresh);
1015NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
1016NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
1017
1018/* F2FS_SBI ATTR */
1019F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
1020F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
1021F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
1022F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
1023F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
1024F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
1025F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
1026F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
1027F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
1028F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
1029F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
1030F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
1031F2FS_SBI_GENERAL_RW_ATTR(migration_window_granularity);
1032F2FS_SBI_GENERAL_RW_ATTR(dir_level);
1033#ifdef CONFIG_F2FS_IOSTAT
1034F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
1035F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
1036#endif
1037F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
1038F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
1039F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
1040F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
1041F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
1042F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
1043F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
1044F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
1045F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
1046#ifdef CONFIG_F2FS_FS_COMPRESSION
1047F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
1048F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
1049F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
1050F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
1051F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
1052#endif
1053/* atomic write */
1054F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
1055F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
1056F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
1057F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
1058/* block age extent cache */
1059F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
1060F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
1061F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
1062/* read extent cache */
1063F2FS_SBI_GENERAL_RW_ATTR(max_read_extent_count);
1064#ifdef CONFIG_BLK_DEV_ZONED
1065F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
1066F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy);
1067#endif
1068
1069/* STAT_INFO ATTR */
1070#ifdef CONFIG_F2FS_STAT_FS
1071STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
1072STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
1073STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
1074STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
1075#endif
1076
1077/* FAULT_INFO ATTR */
1078#ifdef CONFIG_F2FS_FAULT_INJECTION
1079FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
1080FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
1081#endif
1082
1083/* RESERVED_BLOCKS ATTR */
1084RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
1085
1086/* CPRC_INFO ATTR */
1087CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
1088
1089/* ATGC_INFO ATTR */
1090ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
1091ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
1092ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
1093ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
1094
1095F2FS_GENERAL_RO_ATTR(dirty_segments);
1096F2FS_GENERAL_RO_ATTR(free_segments);
1097F2FS_GENERAL_RO_ATTR(ovp_segments);
1098F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
1099F2FS_GENERAL_RO_ATTR(features);
1100F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
1101F2FS_GENERAL_RO_ATTR(unusable);
1102F2FS_GENERAL_RO_ATTR(encoding);
1103F2FS_GENERAL_RO_ATTR(mounted_time_sec);
1104F2FS_GENERAL_RO_ATTR(main_blkaddr);
1105F2FS_GENERAL_RO_ATTR(pending_discard);
1106F2FS_GENERAL_RO_ATTR(atgc_enabled);
1107F2FS_GENERAL_RO_ATTR(gc_mode);
1108#ifdef CONFIG_F2FS_STAT_FS
1109F2FS_GENERAL_RO_ATTR(moved_blocks_background);
1110F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
1111F2FS_GENERAL_RO_ATTR(avg_vblocks);
1112#endif
1113
1114#ifdef CONFIG_FS_ENCRYPTION
1115F2FS_FEATURE_RO_ATTR(encryption);
1116F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
1117#if IS_ENABLED(CONFIG_UNICODE)
1118F2FS_FEATURE_RO_ATTR(encrypted_casefold);
1119#endif
1120#endif /* CONFIG_FS_ENCRYPTION */
1121#ifdef CONFIG_BLK_DEV_ZONED
1122F2FS_FEATURE_RO_ATTR(block_zoned);
1123#endif
1124F2FS_FEATURE_RO_ATTR(atomic_write);
1125F2FS_FEATURE_RO_ATTR(extra_attr);
1126F2FS_FEATURE_RO_ATTR(project_quota);
1127F2FS_FEATURE_RO_ATTR(inode_checksum);
1128F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
1129F2FS_FEATURE_RO_ATTR(quota_ino);
1130F2FS_FEATURE_RO_ATTR(inode_crtime);
1131F2FS_FEATURE_RO_ATTR(lost_found);
1132#ifdef CONFIG_FS_VERITY
1133F2FS_FEATURE_RO_ATTR(verity);
1134#endif
1135F2FS_FEATURE_RO_ATTR(sb_checksum);
1136#if IS_ENABLED(CONFIG_UNICODE)
1137F2FS_FEATURE_RO_ATTR(casefold);
1138#endif
1139F2FS_FEATURE_RO_ATTR(readonly);
1140#ifdef CONFIG_F2FS_FS_COMPRESSION
1141F2FS_FEATURE_RO_ATTR(compression);
1142#endif
1143F2FS_FEATURE_RO_ATTR(pin_file);
1144
1145#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
1146static struct attribute *f2fs_attrs[] = {
1147 ATTR_LIST(gc_urgent_sleep_time),
1148 ATTR_LIST(gc_min_sleep_time),
1149 ATTR_LIST(gc_max_sleep_time),
1150 ATTR_LIST(gc_no_gc_sleep_time),
1151 ATTR_LIST(gc_no_zoned_gc_percent),
1152 ATTR_LIST(gc_boost_zoned_gc_percent),
1153 ATTR_LIST(gc_valid_thresh_ratio),
1154 ATTR_LIST(gc_idle),
1155 ATTR_LIST(gc_urgent),
1156 ATTR_LIST(reclaim_segments),
1157 ATTR_LIST(main_blkaddr),
1158 ATTR_LIST(max_small_discards),
1159 ATTR_LIST(max_discard_request),
1160 ATTR_LIST(min_discard_issue_time),
1161 ATTR_LIST(mid_discard_issue_time),
1162 ATTR_LIST(max_discard_issue_time),
1163 ATTR_LIST(discard_io_aware_gran),
1164 ATTR_LIST(discard_urgent_util),
1165 ATTR_LIST(discard_granularity),
1166 ATTR_LIST(max_ordered_discard),
1167 ATTR_LIST(discard_io_aware),
1168 ATTR_LIST(pending_discard),
1169 ATTR_LIST(gc_mode),
1170 ATTR_LIST(ipu_policy),
1171 ATTR_LIST(min_ipu_util),
1172 ATTR_LIST(min_fsync_blocks),
1173 ATTR_LIST(min_seq_blocks),
1174 ATTR_LIST(min_hot_blocks),
1175 ATTR_LIST(min_ssr_sections),
1176 ATTR_LIST(reserved_segments),
1177 ATTR_LIST(max_victim_search),
1178 ATTR_LIST(migration_granularity),
1179 ATTR_LIST(migration_window_granularity),
1180 ATTR_LIST(dir_level),
1181 ATTR_LIST(ram_thresh),
1182 ATTR_LIST(ra_nid_pages),
1183 ATTR_LIST(dirty_nats_ratio),
1184 ATTR_LIST(max_roll_forward_node_blocks),
1185 ATTR_LIST(cp_interval),
1186 ATTR_LIST(idle_interval),
1187 ATTR_LIST(discard_idle_interval),
1188 ATTR_LIST(gc_idle_interval),
1189 ATTR_LIST(umount_discard_timeout),
1190#ifdef CONFIG_F2FS_IOSTAT
1191 ATTR_LIST(iostat_enable),
1192 ATTR_LIST(iostat_period_ms),
1193#endif
1194 ATTR_LIST(readdir_ra),
1195 ATTR_LIST(max_io_bytes),
1196 ATTR_LIST(gc_pin_file_thresh),
1197 ATTR_LIST(extension_list),
1198#ifdef CONFIG_F2FS_FAULT_INJECTION
1199 ATTR_LIST(inject_rate),
1200 ATTR_LIST(inject_type),
1201#endif
1202 ATTR_LIST(data_io_flag),
1203 ATTR_LIST(node_io_flag),
1204 ATTR_LIST(gc_remaining_trials),
1205 ATTR_LIST(ckpt_thread_ioprio),
1206 ATTR_LIST(dirty_segments),
1207 ATTR_LIST(free_segments),
1208 ATTR_LIST(ovp_segments),
1209 ATTR_LIST(unusable),
1210 ATTR_LIST(lifetime_write_kbytes),
1211 ATTR_LIST(features),
1212 ATTR_LIST(reserved_blocks),
1213 ATTR_LIST(current_reserved_blocks),
1214 ATTR_LIST(encoding),
1215 ATTR_LIST(mounted_time_sec),
1216#ifdef CONFIG_F2FS_STAT_FS
1217 ATTR_LIST(cp_foreground_calls),
1218 ATTR_LIST(cp_background_calls),
1219 ATTR_LIST(gc_foreground_calls),
1220 ATTR_LIST(gc_background_calls),
1221 ATTR_LIST(moved_blocks_foreground),
1222 ATTR_LIST(moved_blocks_background),
1223 ATTR_LIST(avg_vblocks),
1224#endif
1225#ifdef CONFIG_BLK_DEV_ZONED
1226 ATTR_LIST(unusable_blocks_per_sec),
1227 ATTR_LIST(blkzone_alloc_policy),
1228#endif
1229#ifdef CONFIG_F2FS_FS_COMPRESSION
1230 ATTR_LIST(compr_written_block),
1231 ATTR_LIST(compr_saved_block),
1232 ATTR_LIST(compr_new_inode),
1233 ATTR_LIST(compress_percent),
1234 ATTR_LIST(compress_watermark),
1235#endif
1236 /* For ATGC */
1237 ATTR_LIST(atgc_candidate_ratio),
1238 ATTR_LIST(atgc_candidate_count),
1239 ATTR_LIST(atgc_age_weight),
1240 ATTR_LIST(atgc_age_threshold),
1241 ATTR_LIST(atgc_enabled),
1242 ATTR_LIST(seq_file_ra_mul),
1243 ATTR_LIST(gc_segment_mode),
1244 ATTR_LIST(gc_reclaimed_segments),
1245 ATTR_LIST(max_fragment_chunk),
1246 ATTR_LIST(max_fragment_hole),
1247 ATTR_LIST(current_atomic_write),
1248 ATTR_LIST(peak_atomic_write),
1249 ATTR_LIST(committed_atomic_block),
1250 ATTR_LIST(revoked_atomic_block),
1251 ATTR_LIST(hot_data_age_threshold),
1252 ATTR_LIST(warm_data_age_threshold),
1253 ATTR_LIST(last_age_weight),
1254 ATTR_LIST(max_read_extent_count),
1255 NULL,
1256};
1257ATTRIBUTE_GROUPS(f2fs);
1258
1259static struct attribute *f2fs_feat_attrs[] = {
1260#ifdef CONFIG_FS_ENCRYPTION
1261 ATTR_LIST(encryption),
1262 ATTR_LIST(test_dummy_encryption_v2),
1263#if IS_ENABLED(CONFIG_UNICODE)
1264 ATTR_LIST(encrypted_casefold),
1265#endif
1266#endif /* CONFIG_FS_ENCRYPTION */
1267#ifdef CONFIG_BLK_DEV_ZONED
1268 ATTR_LIST(block_zoned),
1269#endif
1270 ATTR_LIST(atomic_write),
1271 ATTR_LIST(extra_attr),
1272 ATTR_LIST(project_quota),
1273 ATTR_LIST(inode_checksum),
1274 ATTR_LIST(flexible_inline_xattr),
1275 ATTR_LIST(quota_ino),
1276 ATTR_LIST(inode_crtime),
1277 ATTR_LIST(lost_found),
1278#ifdef CONFIG_FS_VERITY
1279 ATTR_LIST(verity),
1280#endif
1281 ATTR_LIST(sb_checksum),
1282#if IS_ENABLED(CONFIG_UNICODE)
1283 ATTR_LIST(casefold),
1284#endif
1285 ATTR_LIST(readonly),
1286#ifdef CONFIG_F2FS_FS_COMPRESSION
1287 ATTR_LIST(compression),
1288#endif
1289 ATTR_LIST(pin_file),
1290 NULL,
1291};
1292ATTRIBUTE_GROUPS(f2fs_feat);
1293
1294F2FS_GENERAL_RO_ATTR(sb_status);
1295F2FS_GENERAL_RO_ATTR(cp_status);
1296F2FS_GENERAL_RO_ATTR(issued_discard);
1297F2FS_GENERAL_RO_ATTR(queued_discard);
1298F2FS_GENERAL_RO_ATTR(undiscard_blks);
1299
1300static struct attribute *f2fs_stat_attrs[] = {
1301 ATTR_LIST(sb_status),
1302 ATTR_LIST(cp_status),
1303 ATTR_LIST(issued_discard),
1304 ATTR_LIST(queued_discard),
1305 ATTR_LIST(undiscard_blks),
1306 NULL,
1307};
1308ATTRIBUTE_GROUPS(f2fs_stat);
1309
1310F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1311F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1312F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1313F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1314F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1315F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1316F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1317F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1318F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1319F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1320F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1321F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1322F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1323F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1324F2FS_SB_FEATURE_RO_ATTR(device_alias, DEVICE_ALIAS);
1325
1326static struct attribute *f2fs_sb_feat_attrs[] = {
1327 ATTR_LIST(sb_encryption),
1328 ATTR_LIST(sb_block_zoned),
1329 ATTR_LIST(sb_extra_attr),
1330 ATTR_LIST(sb_project_quota),
1331 ATTR_LIST(sb_inode_checksum),
1332 ATTR_LIST(sb_flexible_inline_xattr),
1333 ATTR_LIST(sb_quota_ino),
1334 ATTR_LIST(sb_inode_crtime),
1335 ATTR_LIST(sb_lost_found),
1336 ATTR_LIST(sb_verity),
1337 ATTR_LIST(sb_sb_checksum),
1338 ATTR_LIST(sb_casefold),
1339 ATTR_LIST(sb_compression),
1340 ATTR_LIST(sb_readonly),
1341 ATTR_LIST(sb_device_alias),
1342 NULL,
1343};
1344ATTRIBUTE_GROUPS(f2fs_sb_feat);
1345
1346static const struct sysfs_ops f2fs_attr_ops = {
1347 .show = f2fs_attr_show,
1348 .store = f2fs_attr_store,
1349};
1350
1351static const struct kobj_type f2fs_sb_ktype = {
1352 .default_groups = f2fs_groups,
1353 .sysfs_ops = &f2fs_attr_ops,
1354 .release = f2fs_sb_release,
1355};
1356
1357static const struct kobj_type f2fs_ktype = {
1358 .sysfs_ops = &f2fs_attr_ops,
1359};
1360
1361static struct kset f2fs_kset = {
1362 .kobj = {.ktype = &f2fs_ktype},
1363};
1364
1365static const struct kobj_type f2fs_feat_ktype = {
1366 .default_groups = f2fs_feat_groups,
1367 .sysfs_ops = &f2fs_attr_ops,
1368};
1369
1370static struct kobject f2fs_feat = {
1371 .kset = &f2fs_kset,
1372};
1373
1374static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
1375 struct attribute *attr, char *buf)
1376{
1377 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1378 s_stat_kobj);
1379 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1380
1381 return a->show ? a->show(a, sbi, buf) : 0;
1382}
1383
1384static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
1385 const char *buf, size_t len)
1386{
1387 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1388 s_stat_kobj);
1389 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1390
1391 return a->store ? a->store(a, sbi, buf, len) : 0;
1392}
1393
1394static void f2fs_stat_kobj_release(struct kobject *kobj)
1395{
1396 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1397 s_stat_kobj);
1398 complete(&sbi->s_stat_kobj_unregister);
1399}
1400
1401static const struct sysfs_ops f2fs_stat_attr_ops = {
1402 .show = f2fs_stat_attr_show,
1403 .store = f2fs_stat_attr_store,
1404};
1405
1406static const struct kobj_type f2fs_stat_ktype = {
1407 .default_groups = f2fs_stat_groups,
1408 .sysfs_ops = &f2fs_stat_attr_ops,
1409 .release = f2fs_stat_kobj_release,
1410};
1411
1412static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
1413 struct attribute *attr, char *buf)
1414{
1415 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1416 s_feature_list_kobj);
1417 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1418
1419 return a->show ? a->show(a, sbi, buf) : 0;
1420}
1421
1422static void f2fs_feature_list_kobj_release(struct kobject *kobj)
1423{
1424 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1425 s_feature_list_kobj);
1426 complete(&sbi->s_feature_list_kobj_unregister);
1427}
1428
1429static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1430 .show = f2fs_sb_feat_attr_show,
1431};
1432
1433static const struct kobj_type f2fs_feature_list_ktype = {
1434 .default_groups = f2fs_sb_feat_groups,
1435 .sysfs_ops = &f2fs_feature_list_attr_ops,
1436 .release = f2fs_feature_list_kobj_release,
1437};
1438
1439static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
1440 void *offset)
1441{
1442 struct super_block *sb = seq->private;
1443 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1444 unsigned int total_segs =
1445 le32_to_cpu(sbi->raw_super->segment_count_main);
1446 int i;
1447
1448 seq_puts(seq, "format: segment_type|valid_blocks\n"
1449 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1450
1451 for (i = 0; i < total_segs; i++) {
1452 struct seg_entry *se = get_seg_entry(sbi, i);
1453
1454 if ((i % 10) == 0)
1455 seq_printf(seq, "%-10d", i);
1456 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
1457 if ((i % 10) == 9 || i == (total_segs - 1))
1458 seq_putc(seq, '\n');
1459 else
1460 seq_putc(seq, ' ');
1461 }
1462
1463 return 0;
1464}
1465
1466static int __maybe_unused segment_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 unsigned int total_segs =
1472 le32_to_cpu(sbi->raw_super->segment_count_main);
1473 int i, j;
1474
1475 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
1476 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1477
1478 for (i = 0; i < total_segs; i++) {
1479 struct seg_entry *se = get_seg_entry(sbi, i);
1480
1481 seq_printf(seq, "%-10d", i);
1482 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
1483 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
1484 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
1485 seq_putc(seq, '\n');
1486 }
1487 return 0;
1488}
1489
1490static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
1491 void *offset)
1492{
1493 struct super_block *sb = seq->private;
1494 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1495 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1496 int i;
1497
1498 seq_puts(seq, "format: victim_secmap bitmaps\n");
1499
1500 for (i = 0; i < MAIN_SECS(sbi); i++) {
1501 if ((i % 10) == 0)
1502 seq_printf(seq, "%-10d", i);
1503 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
1504 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
1505 seq_putc(seq, '\n');
1506 else
1507 seq_putc(seq, ' ');
1508 }
1509 return 0;
1510}
1511
1512static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
1513 void *offset)
1514{
1515 struct super_block *sb = seq->private;
1516 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1517 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1518 int i, count;
1519
1520 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n");
1521 if (!f2fs_realtime_discard_enable(sbi))
1522 return 0;
1523
1524 if (dcc) {
1525 mutex_lock(&dcc->cmd_lock);
1526 for (i = 0; i < MAX_PLIST_NUM; i++) {
1527 struct list_head *pend_list;
1528 struct discard_cmd *dc, *tmp;
1529
1530 if (i % 8 == 0)
1531 seq_printf(seq, " %-3d", i);
1532 count = 0;
1533 pend_list = &dcc->pend_list[i];
1534 list_for_each_entry_safe(dc, tmp, pend_list, list)
1535 count++;
1536 if (count)
1537 seq_printf(seq, " %7d", count);
1538 else
1539 seq_puts(seq, " .");
1540 if (i % 8 == 7)
1541 seq_putc(seq, '\n');
1542 }
1543 seq_putc(seq, '\n');
1544 mutex_unlock(&dcc->cmd_lock);
1545 }
1546
1547 return 0;
1548}
1549
1550static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
1551 void *offset)
1552{
1553 struct super_block *sb = seq->private;
1554 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1555 int i;
1556
1557 seq_printf(seq, "Address Layout : %5luB Block address (# of Segments)\n",
1558 F2FS_BLKSIZE);
1559 seq_printf(seq, " SB : %12s\n", "0/1024B");
1560 seq_printf(seq, " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi));
1561 seq_printf(seq, " Checkpoint : 0x%010x (%10d)\n",
1562 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2);
1563 seq_printf(seq, " SIT : 0x%010x (%10d)\n",
1564 SIT_I(sbi)->sit_base_addr,
1565 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit));
1566 seq_printf(seq, " NAT : 0x%010x (%10d)\n",
1567 NM_I(sbi)->nat_blkaddr,
1568 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat));
1569 seq_printf(seq, " SSA : 0x%010x (%10d)\n",
1570 SM_I(sbi)->ssa_blkaddr,
1571 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa));
1572 seq_printf(seq, " Main : 0x%010x (%10d)\n",
1573 SM_I(sbi)->main_blkaddr,
1574 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
1575 seq_printf(seq, " # of Sections : %12d\n",
1576 le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
1577 seq_printf(seq, " Segs/Sections : %12d\n",
1578 SEGS_PER_SEC(sbi));
1579 seq_printf(seq, " Section size : %12d MB\n",
1580 SEGS_PER_SEC(sbi) << 1);
1581
1582 if (!f2fs_is_multi_device(sbi))
1583 return 0;
1584
1585 seq_puts(seq, "\nDisk Map for multi devices:\n");
1586 for (i = 0; i < sbi->s_ndevs; i++)
1587 seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n",
1588 i, bdev_is_zoned(FDEV(i).bdev),
1589 FDEV(i).start_blk, FDEV(i).end_blk,
1590 FDEV(i).path);
1591 return 0;
1592}
1593
1594int __init f2fs_init_sysfs(void)
1595{
1596 int ret;
1597
1598 kobject_set_name(&f2fs_kset.kobj, "f2fs");
1599 f2fs_kset.kobj.parent = fs_kobj;
1600 ret = kset_register(&f2fs_kset);
1601 if (ret)
1602 return ret;
1603
1604 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
1605 NULL, "features");
1606 if (ret)
1607 goto put_kobject;
1608
1609 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
1610 if (!f2fs_proc_root) {
1611 ret = -ENOMEM;
1612 goto put_kobject;
1613 }
1614
1615 return 0;
1616put_kobject:
1617 kobject_put(&f2fs_feat);
1618 kset_unregister(&f2fs_kset);
1619 return ret;
1620}
1621
1622void f2fs_exit_sysfs(void)
1623{
1624 kobject_put(&f2fs_feat);
1625 kset_unregister(&f2fs_kset);
1626 remove_proc_entry("fs/f2fs", NULL);
1627 f2fs_proc_root = NULL;
1628}
1629
1630int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
1631{
1632 struct super_block *sb = sbi->sb;
1633 int err;
1634
1635 sbi->s_kobj.kset = &f2fs_kset;
1636 init_completion(&sbi->s_kobj_unregister);
1637 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
1638 "%s", sb->s_id);
1639 if (err)
1640 goto put_sb_kobj;
1641
1642 sbi->s_stat_kobj.kset = &f2fs_kset;
1643 init_completion(&sbi->s_stat_kobj_unregister);
1644 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
1645 &sbi->s_kobj, "stat");
1646 if (err)
1647 goto put_stat_kobj;
1648
1649 sbi->s_feature_list_kobj.kset = &f2fs_kset;
1650 init_completion(&sbi->s_feature_list_kobj_unregister);
1651 err = kobject_init_and_add(&sbi->s_feature_list_kobj,
1652 &f2fs_feature_list_ktype,
1653 &sbi->s_kobj, "feature_list");
1654 if (err)
1655 goto put_feature_list_kobj;
1656
1657 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
1658 if (!sbi->s_proc) {
1659 err = -ENOMEM;
1660 goto put_feature_list_kobj;
1661 }
1662
1663 proc_create_single_data("segment_info", 0444, sbi->s_proc,
1664 segment_info_seq_show, sb);
1665 proc_create_single_data("segment_bits", 0444, sbi->s_proc,
1666 segment_bits_seq_show, sb);
1667#ifdef CONFIG_F2FS_IOSTAT
1668 proc_create_single_data("iostat_info", 0444, sbi->s_proc,
1669 iostat_info_seq_show, sb);
1670#endif
1671 proc_create_single_data("victim_bits", 0444, sbi->s_proc,
1672 victim_bits_seq_show, sb);
1673 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
1674 discard_plist_seq_show, sb);
1675 proc_create_single_data("disk_map", 0444, sbi->s_proc,
1676 disk_map_seq_show, sb);
1677 return 0;
1678put_feature_list_kobj:
1679 kobject_put(&sbi->s_feature_list_kobj);
1680 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1681put_stat_kobj:
1682 kobject_put(&sbi->s_stat_kobj);
1683 wait_for_completion(&sbi->s_stat_kobj_unregister);
1684put_sb_kobj:
1685 kobject_put(&sbi->s_kobj);
1686 wait_for_completion(&sbi->s_kobj_unregister);
1687 return err;
1688}
1689
1690void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
1691{
1692 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root);
1693
1694 kobject_put(&sbi->s_stat_kobj);
1695 wait_for_completion(&sbi->s_stat_kobj_unregister);
1696 kobject_put(&sbi->s_feature_list_kobj);
1697 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1698
1699 kobject_put(&sbi->s_kobj);
1700 wait_for_completion(&sbi->s_kobj_unregister);
1701}
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
23static struct proc_dir_entry *f2fs_proc_root;
24
25/* Sysfs support for f2fs */
26enum {
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
44static 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
54struct 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
64static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
65 struct f2fs_sb_info *sbi, char *buf);
66
67static 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
95static 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
102static 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
109static 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
116static 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
125static 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
131static 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
137static 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
146static 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
155static 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
164static 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
173static 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
179static 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
232static 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
238static 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
250static 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
265static 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
272static 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
282static 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
291static 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
302static 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
309static 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 data = IOPRIO_PRIO_DATA(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", data);
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
401static 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);
444out:
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 data;
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, &data);
465 if (ret)
466 return ret;
467 if (data >= IOPRIO_NR_LEVELS || data < 0)
468 return -EINVAL;
469
470 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data);
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 && t >= BIT(FAULT_MAX))
488 return -EINVAL;
489 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
490 return -EINVAL;
491#endif
492 if (a->struct_type == RESERVED_BLOCKS) {
493 spin_lock(&sbi->stat_lock);
494 if (t > (unsigned long)(sbi->user_block_count -
495 F2FS_OPTION(sbi).root_reserved_blocks -
496 SEGS_TO_BLKS(sbi,
497 SM_I(sbi)->additional_reserved_segments))) {
498 spin_unlock(&sbi->stat_lock);
499 return -EINVAL;
500 }
501 *ui = t;
502 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
503 sbi->user_block_count - valid_user_blocks(sbi));
504 spin_unlock(&sbi->stat_lock);
505 return count;
506 }
507
508 if (!strcmp(a->attr.name, "discard_io_aware_gran")) {
509 if (t > MAX_PLIST_NUM)
510 return -EINVAL;
511 if (!f2fs_block_unit_discard(sbi))
512 return -EINVAL;
513 if (t == *ui)
514 return count;
515 *ui = t;
516 return count;
517 }
518
519 if (!strcmp(a->attr.name, "discard_granularity")) {
520 if (t == 0 || t > MAX_PLIST_NUM)
521 return -EINVAL;
522 if (!f2fs_block_unit_discard(sbi))
523 return -EINVAL;
524 if (t == *ui)
525 return count;
526 *ui = t;
527 return count;
528 }
529
530 if (!strcmp(a->attr.name, "max_ordered_discard")) {
531 if (t == 0 || t > MAX_PLIST_NUM)
532 return -EINVAL;
533 if (!f2fs_block_unit_discard(sbi))
534 return -EINVAL;
535 *ui = t;
536 return count;
537 }
538
539 if (!strcmp(a->attr.name, "discard_urgent_util")) {
540 if (t > 100)
541 return -EINVAL;
542 *ui = t;
543 return count;
544 }
545
546 if (!strcmp(a->attr.name, "discard_io_aware")) {
547 if (t >= DPOLICY_IO_AWARE_MAX)
548 return -EINVAL;
549 *ui = t;
550 return count;
551 }
552
553 if (!strcmp(a->attr.name, "migration_granularity")) {
554 if (t == 0 || t > SEGS_PER_SEC(sbi))
555 return -EINVAL;
556 }
557
558 if (!strcmp(a->attr.name, "gc_urgent")) {
559 if (t == 0) {
560 sbi->gc_mode = GC_NORMAL;
561 } else if (t == 1) {
562 sbi->gc_mode = GC_URGENT_HIGH;
563 if (sbi->gc_thread) {
564 sbi->gc_thread->gc_wake = true;
565 wake_up_interruptible_all(
566 &sbi->gc_thread->gc_wait_queue_head);
567 wake_up_discard_thread(sbi, true);
568 }
569 } else if (t == 2) {
570 sbi->gc_mode = GC_URGENT_LOW;
571 } else if (t == 3) {
572 sbi->gc_mode = GC_URGENT_MID;
573 if (sbi->gc_thread) {
574 sbi->gc_thread->gc_wake = true;
575 wake_up_interruptible_all(
576 &sbi->gc_thread->gc_wait_queue_head);
577 }
578 } else {
579 return -EINVAL;
580 }
581 return count;
582 }
583 if (!strcmp(a->attr.name, "gc_idle")) {
584 if (t == GC_IDLE_CB) {
585 sbi->gc_mode = GC_IDLE_CB;
586 } else if (t == GC_IDLE_GREEDY) {
587 sbi->gc_mode = GC_IDLE_GREEDY;
588 } else if (t == GC_IDLE_AT) {
589 if (!sbi->am.atgc_enabled)
590 return -EINVAL;
591 sbi->gc_mode = GC_IDLE_AT;
592 } else {
593 sbi->gc_mode = GC_NORMAL;
594 }
595 return count;
596 }
597
598 if (!strcmp(a->attr.name, "gc_remaining_trials")) {
599 spin_lock(&sbi->gc_remaining_trials_lock);
600 sbi->gc_remaining_trials = t;
601 spin_unlock(&sbi->gc_remaining_trials_lock);
602
603 return count;
604 }
605
606#ifdef CONFIG_F2FS_IOSTAT
607 if (!strcmp(a->attr.name, "iostat_enable")) {
608 sbi->iostat_enable = !!t;
609 if (!sbi->iostat_enable)
610 f2fs_reset_iostat(sbi);
611 return count;
612 }
613
614 if (!strcmp(a->attr.name, "iostat_period_ms")) {
615 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
616 return -EINVAL;
617 spin_lock_irq(&sbi->iostat_lock);
618 sbi->iostat_period_ms = (unsigned int)t;
619 spin_unlock_irq(&sbi->iostat_lock);
620 return count;
621 }
622#endif
623
624#ifdef CONFIG_F2FS_FS_COMPRESSION
625 if (!strcmp(a->attr.name, "compr_written_block") ||
626 !strcmp(a->attr.name, "compr_saved_block")) {
627 if (t != 0)
628 return -EINVAL;
629 sbi->compr_written_block = 0;
630 sbi->compr_saved_block = 0;
631 return count;
632 }
633
634 if (!strcmp(a->attr.name, "compr_new_inode")) {
635 if (t != 0)
636 return -EINVAL;
637 sbi->compr_new_inode = 0;
638 return count;
639 }
640
641 if (!strcmp(a->attr.name, "compress_percent")) {
642 if (t == 0 || t > 100)
643 return -EINVAL;
644 *ui = t;
645 return count;
646 }
647
648 if (!strcmp(a->attr.name, "compress_watermark")) {
649 if (t == 0 || t > 100)
650 return -EINVAL;
651 *ui = t;
652 return count;
653 }
654#endif
655
656 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
657 if (t > 100)
658 return -EINVAL;
659 sbi->am.candidate_ratio = t;
660 return count;
661 }
662
663 if (!strcmp(a->attr.name, "atgc_age_weight")) {
664 if (t > 100)
665 return -EINVAL;
666 sbi->am.age_weight = t;
667 return count;
668 }
669
670 if (!strcmp(a->attr.name, "gc_segment_mode")) {
671 if (t < MAX_GC_MODE)
672 sbi->gc_segment_mode = t;
673 else
674 return -EINVAL;
675 return count;
676 }
677
678 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
679 if (t != 0)
680 return -EINVAL;
681 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0;
682 return count;
683 }
684
685 if (!strcmp(a->attr.name, "seq_file_ra_mul")) {
686 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL)
687 sbi->seq_file_ra_mul = t;
688 else
689 return -EINVAL;
690 return count;
691 }
692
693 if (!strcmp(a->attr.name, "max_fragment_chunk")) {
694 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
695 sbi->max_fragment_chunk = t;
696 else
697 return -EINVAL;
698 return count;
699 }
700
701 if (!strcmp(a->attr.name, "max_fragment_hole")) {
702 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
703 sbi->max_fragment_hole = t;
704 else
705 return -EINVAL;
706 return count;
707 }
708
709 if (!strcmp(a->attr.name, "peak_atomic_write")) {
710 if (t != 0)
711 return -EINVAL;
712 sbi->peak_atomic_write = 0;
713 return count;
714 }
715
716 if (!strcmp(a->attr.name, "committed_atomic_block")) {
717 if (t != 0)
718 return -EINVAL;
719 sbi->committed_atomic_block = 0;
720 return count;
721 }
722
723 if (!strcmp(a->attr.name, "revoked_atomic_block")) {
724 if (t != 0)
725 return -EINVAL;
726 sbi->revoked_atomic_block = 0;
727 return count;
728 }
729
730 if (!strcmp(a->attr.name, "readdir_ra")) {
731 sbi->readdir_ra = !!t;
732 return count;
733 }
734
735 if (!strcmp(a->attr.name, "hot_data_age_threshold")) {
736 if (t == 0 || t >= sbi->warm_data_age_threshold)
737 return -EINVAL;
738 if (t == *ui)
739 return count;
740 *ui = (unsigned int)t;
741 return count;
742 }
743
744 if (!strcmp(a->attr.name, "warm_data_age_threshold")) {
745 if (t <= sbi->hot_data_age_threshold)
746 return -EINVAL;
747 if (t == *ui)
748 return count;
749 *ui = (unsigned int)t;
750 return count;
751 }
752
753 if (!strcmp(a->attr.name, "last_age_weight")) {
754 if (t > 100)
755 return -EINVAL;
756 if (t == *ui)
757 return count;
758 *ui = (unsigned int)t;
759 return count;
760 }
761
762 if (!strcmp(a->attr.name, "ipu_policy")) {
763 if (t >= BIT(F2FS_IPU_MAX))
764 return -EINVAL;
765 if (t && f2fs_lfs_mode(sbi))
766 return -EINVAL;
767 SM_I(sbi)->ipu_policy = (unsigned int)t;
768 return count;
769 }
770
771 if (!strcmp(a->attr.name, "dir_level")) {
772 if (t > MAX_DIR_HASH_DEPTH)
773 return -EINVAL;
774 sbi->dir_level = t;
775 return count;
776 }
777
778 *ui = (unsigned int)t;
779
780 return count;
781}
782
783static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
784 struct f2fs_sb_info *sbi,
785 const char *buf, size_t count)
786{
787 ssize_t ret;
788 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
789 a->struct_type == GC_THREAD);
790
791 if (gc_entry) {
792 if (!down_read_trylock(&sbi->sb->s_umount))
793 return -EAGAIN;
794 }
795 ret = __sbi_store(a, sbi, buf, count);
796 if (gc_entry)
797 up_read(&sbi->sb->s_umount);
798
799 return ret;
800}
801
802static ssize_t f2fs_attr_show(struct kobject *kobj,
803 struct attribute *attr, char *buf)
804{
805 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
806 s_kobj);
807 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
808
809 return a->show ? a->show(a, sbi, buf) : 0;
810}
811
812static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
813 const char *buf, size_t len)
814{
815 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
816 s_kobj);
817 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
818
819 return a->store ? a->store(a, sbi, buf, len) : 0;
820}
821
822static void f2fs_sb_release(struct kobject *kobj)
823{
824 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
825 s_kobj);
826 complete(&sbi->s_kobj_unregister);
827}
828
829/*
830 * Note that there are three feature list entries:
831 * 1) /sys/fs/f2fs/features
832 * : shows runtime features supported by in-kernel f2fs along with Kconfig.
833 * - ref. F2FS_FEATURE_RO_ATTR()
834 *
835 * 2) /sys/fs/f2fs/$s_id/features <deprecated>
836 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
837 * won't add new feature anymore, and thus, users should check entries in 3)
838 * instead of this 2).
839 *
840 * 3) /sys/fs/f2fs/$s_id/feature_list
841 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows
842 * sysfs entry rule where each entry should expose single value.
843 * This list covers old feature list provided by 2) and beyond. Therefore,
844 * please add new on-disk feature in this list only.
845 * - ref. F2FS_SB_FEATURE_RO_ATTR()
846 */
847static ssize_t f2fs_feature_show(struct f2fs_attr *a,
848 struct f2fs_sb_info *sbi, char *buf)
849{
850 return sysfs_emit(buf, "supported\n");
851}
852
853#define F2FS_FEATURE_RO_ATTR(_name) \
854static struct f2fs_attr f2fs_attr_##_name = { \
855 .attr = {.name = __stringify(_name), .mode = 0444 }, \
856 .show = f2fs_feature_show, \
857}
858
859static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
860 struct f2fs_sb_info *sbi, char *buf)
861{
862 if (F2FS_HAS_FEATURE(sbi, a->id))
863 return sysfs_emit(buf, "supported\n");
864 return sysfs_emit(buf, "unsupported\n");
865}
866
867#define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \
868static struct f2fs_attr f2fs_attr_sb_##_name = { \
869 .attr = {.name = __stringify(_name), .mode = 0444 }, \
870 .show = f2fs_sb_feature_show, \
871 .id = F2FS_FEATURE_##_feat, \
872}
873
874#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
875static struct f2fs_attr f2fs_attr_##_name = { \
876 .attr = {.name = __stringify(_name), .mode = _mode }, \
877 .show = _show, \
878 .store = _store, \
879 .struct_type = _struct_type, \
880 .offset = _offset \
881}
882
883#define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
884 F2FS_ATTR_OFFSET(struct_type, name, 0444, \
885 f2fs_sbi_show, NULL, \
886 offsetof(struct struct_name, elname))
887
888#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
889 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
890 f2fs_sbi_show, f2fs_sbi_store, \
891 offsetof(struct struct_name, elname))
892
893#define F2FS_GENERAL_RO_ATTR(name) \
894static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
895
896#ifdef CONFIG_F2FS_STAT_FS
897#define STAT_INFO_RO_ATTR(name, elname) \
898 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname)
899#endif
900
901#define GC_THREAD_RW_ATTR(name, elname) \
902 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname)
903
904#define SM_INFO_RW_ATTR(name, elname) \
905 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname)
906
907#define SM_INFO_GENERAL_RW_ATTR(elname) \
908 SM_INFO_RW_ATTR(elname, elname)
909
910#define DCC_INFO_RW_ATTR(name, elname) \
911 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname)
912
913#define DCC_INFO_GENERAL_RW_ATTR(elname) \
914 DCC_INFO_RW_ATTR(elname, elname)
915
916#define NM_INFO_RW_ATTR(name, elname) \
917 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname)
918
919#define NM_INFO_GENERAL_RW_ATTR(elname) \
920 NM_INFO_RW_ATTR(elname, elname)
921
922#define F2FS_SBI_RW_ATTR(name, elname) \
923 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname)
924
925#define F2FS_SBI_GENERAL_RW_ATTR(elname) \
926 F2FS_SBI_RW_ATTR(elname, elname)
927
928#define F2FS_SBI_GENERAL_RO_ATTR(elname) \
929 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname)
930
931#ifdef CONFIG_F2FS_FAULT_INJECTION
932#define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \
933 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname)
934#endif
935
936#define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \
937 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname)
938
939#define CPRC_INFO_GENERAL_RW_ATTR(elname) \
940 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname)
941
942#define ATGC_INFO_RW_ATTR(name, elname) \
943 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname)
944
945/* GC_THREAD ATTR */
946GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
947GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
948GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
949GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
950
951/* SM_INFO ATTR */
952SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
953SM_INFO_GENERAL_RW_ATTR(ipu_policy);
954SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
955SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
956SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
957SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
958SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
959
960/* DCC_INFO ATTR */
961DCC_INFO_RW_ATTR(max_small_discards, max_discards);
962DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
963DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
964DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
965DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
966DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
967DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
968DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
969DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
970DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
971
972/* NM_INFO ATTR */
973NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
974NM_INFO_GENERAL_RW_ATTR(ram_thresh);
975NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
976NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
977
978/* F2FS_SBI ATTR */
979F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
980F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
981F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
982F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
983F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
984F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
985F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
986F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
987F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
988F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
989F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
990F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
991F2FS_SBI_GENERAL_RW_ATTR(dir_level);
992#ifdef CONFIG_F2FS_IOSTAT
993F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
994F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
995#endif
996F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
997F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
998F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
999F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
1000F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
1001F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
1002F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
1003F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
1004F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
1005#ifdef CONFIG_F2FS_FS_COMPRESSION
1006F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
1007F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
1008F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
1009F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
1010F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
1011#endif
1012/* atomic write */
1013F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
1014F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
1015F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
1016F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
1017/* block age extent cache */
1018F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
1019F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
1020F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
1021#ifdef CONFIG_BLK_DEV_ZONED
1022F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
1023#endif
1024
1025/* STAT_INFO ATTR */
1026#ifdef CONFIG_F2FS_STAT_FS
1027STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
1028STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
1029STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
1030STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
1031#endif
1032
1033/* FAULT_INFO ATTR */
1034#ifdef CONFIG_F2FS_FAULT_INJECTION
1035FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
1036FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
1037#endif
1038
1039/* RESERVED_BLOCKS ATTR */
1040RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
1041
1042/* CPRC_INFO ATTR */
1043CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
1044
1045/* ATGC_INFO ATTR */
1046ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
1047ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
1048ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
1049ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
1050
1051F2FS_GENERAL_RO_ATTR(dirty_segments);
1052F2FS_GENERAL_RO_ATTR(free_segments);
1053F2FS_GENERAL_RO_ATTR(ovp_segments);
1054F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
1055F2FS_GENERAL_RO_ATTR(features);
1056F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
1057F2FS_GENERAL_RO_ATTR(unusable);
1058F2FS_GENERAL_RO_ATTR(encoding);
1059F2FS_GENERAL_RO_ATTR(mounted_time_sec);
1060F2FS_GENERAL_RO_ATTR(main_blkaddr);
1061F2FS_GENERAL_RO_ATTR(pending_discard);
1062F2FS_GENERAL_RO_ATTR(gc_mode);
1063#ifdef CONFIG_F2FS_STAT_FS
1064F2FS_GENERAL_RO_ATTR(moved_blocks_background);
1065F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
1066F2FS_GENERAL_RO_ATTR(avg_vblocks);
1067#endif
1068
1069#ifdef CONFIG_FS_ENCRYPTION
1070F2FS_FEATURE_RO_ATTR(encryption);
1071F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
1072#if IS_ENABLED(CONFIG_UNICODE)
1073F2FS_FEATURE_RO_ATTR(encrypted_casefold);
1074#endif
1075#endif /* CONFIG_FS_ENCRYPTION */
1076#ifdef CONFIG_BLK_DEV_ZONED
1077F2FS_FEATURE_RO_ATTR(block_zoned);
1078#endif
1079F2FS_FEATURE_RO_ATTR(atomic_write);
1080F2FS_FEATURE_RO_ATTR(extra_attr);
1081F2FS_FEATURE_RO_ATTR(project_quota);
1082F2FS_FEATURE_RO_ATTR(inode_checksum);
1083F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
1084F2FS_FEATURE_RO_ATTR(quota_ino);
1085F2FS_FEATURE_RO_ATTR(inode_crtime);
1086F2FS_FEATURE_RO_ATTR(lost_found);
1087#ifdef CONFIG_FS_VERITY
1088F2FS_FEATURE_RO_ATTR(verity);
1089#endif
1090F2FS_FEATURE_RO_ATTR(sb_checksum);
1091#if IS_ENABLED(CONFIG_UNICODE)
1092F2FS_FEATURE_RO_ATTR(casefold);
1093#endif
1094F2FS_FEATURE_RO_ATTR(readonly);
1095#ifdef CONFIG_F2FS_FS_COMPRESSION
1096F2FS_FEATURE_RO_ATTR(compression);
1097#endif
1098F2FS_FEATURE_RO_ATTR(pin_file);
1099
1100#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
1101static struct attribute *f2fs_attrs[] = {
1102 ATTR_LIST(gc_urgent_sleep_time),
1103 ATTR_LIST(gc_min_sleep_time),
1104 ATTR_LIST(gc_max_sleep_time),
1105 ATTR_LIST(gc_no_gc_sleep_time),
1106 ATTR_LIST(gc_idle),
1107 ATTR_LIST(gc_urgent),
1108 ATTR_LIST(reclaim_segments),
1109 ATTR_LIST(main_blkaddr),
1110 ATTR_LIST(max_small_discards),
1111 ATTR_LIST(max_discard_request),
1112 ATTR_LIST(min_discard_issue_time),
1113 ATTR_LIST(mid_discard_issue_time),
1114 ATTR_LIST(max_discard_issue_time),
1115 ATTR_LIST(discard_io_aware_gran),
1116 ATTR_LIST(discard_urgent_util),
1117 ATTR_LIST(discard_granularity),
1118 ATTR_LIST(max_ordered_discard),
1119 ATTR_LIST(discard_io_aware),
1120 ATTR_LIST(pending_discard),
1121 ATTR_LIST(gc_mode),
1122 ATTR_LIST(ipu_policy),
1123 ATTR_LIST(min_ipu_util),
1124 ATTR_LIST(min_fsync_blocks),
1125 ATTR_LIST(min_seq_blocks),
1126 ATTR_LIST(min_hot_blocks),
1127 ATTR_LIST(min_ssr_sections),
1128 ATTR_LIST(max_victim_search),
1129 ATTR_LIST(migration_granularity),
1130 ATTR_LIST(dir_level),
1131 ATTR_LIST(ram_thresh),
1132 ATTR_LIST(ra_nid_pages),
1133 ATTR_LIST(dirty_nats_ratio),
1134 ATTR_LIST(max_roll_forward_node_blocks),
1135 ATTR_LIST(cp_interval),
1136 ATTR_LIST(idle_interval),
1137 ATTR_LIST(discard_idle_interval),
1138 ATTR_LIST(gc_idle_interval),
1139 ATTR_LIST(umount_discard_timeout),
1140#ifdef CONFIG_F2FS_IOSTAT
1141 ATTR_LIST(iostat_enable),
1142 ATTR_LIST(iostat_period_ms),
1143#endif
1144 ATTR_LIST(readdir_ra),
1145 ATTR_LIST(max_io_bytes),
1146 ATTR_LIST(gc_pin_file_thresh),
1147 ATTR_LIST(extension_list),
1148#ifdef CONFIG_F2FS_FAULT_INJECTION
1149 ATTR_LIST(inject_rate),
1150 ATTR_LIST(inject_type),
1151#endif
1152 ATTR_LIST(data_io_flag),
1153 ATTR_LIST(node_io_flag),
1154 ATTR_LIST(gc_remaining_trials),
1155 ATTR_LIST(ckpt_thread_ioprio),
1156 ATTR_LIST(dirty_segments),
1157 ATTR_LIST(free_segments),
1158 ATTR_LIST(ovp_segments),
1159 ATTR_LIST(unusable),
1160 ATTR_LIST(lifetime_write_kbytes),
1161 ATTR_LIST(features),
1162 ATTR_LIST(reserved_blocks),
1163 ATTR_LIST(current_reserved_blocks),
1164 ATTR_LIST(encoding),
1165 ATTR_LIST(mounted_time_sec),
1166#ifdef CONFIG_F2FS_STAT_FS
1167 ATTR_LIST(cp_foreground_calls),
1168 ATTR_LIST(cp_background_calls),
1169 ATTR_LIST(gc_foreground_calls),
1170 ATTR_LIST(gc_background_calls),
1171 ATTR_LIST(moved_blocks_foreground),
1172 ATTR_LIST(moved_blocks_background),
1173 ATTR_LIST(avg_vblocks),
1174#endif
1175#ifdef CONFIG_BLK_DEV_ZONED
1176 ATTR_LIST(unusable_blocks_per_sec),
1177#endif
1178#ifdef CONFIG_F2FS_FS_COMPRESSION
1179 ATTR_LIST(compr_written_block),
1180 ATTR_LIST(compr_saved_block),
1181 ATTR_LIST(compr_new_inode),
1182 ATTR_LIST(compress_percent),
1183 ATTR_LIST(compress_watermark),
1184#endif
1185 /* For ATGC */
1186 ATTR_LIST(atgc_candidate_ratio),
1187 ATTR_LIST(atgc_candidate_count),
1188 ATTR_LIST(atgc_age_weight),
1189 ATTR_LIST(atgc_age_threshold),
1190 ATTR_LIST(seq_file_ra_mul),
1191 ATTR_LIST(gc_segment_mode),
1192 ATTR_LIST(gc_reclaimed_segments),
1193 ATTR_LIST(max_fragment_chunk),
1194 ATTR_LIST(max_fragment_hole),
1195 ATTR_LIST(current_atomic_write),
1196 ATTR_LIST(peak_atomic_write),
1197 ATTR_LIST(committed_atomic_block),
1198 ATTR_LIST(revoked_atomic_block),
1199 ATTR_LIST(hot_data_age_threshold),
1200 ATTR_LIST(warm_data_age_threshold),
1201 ATTR_LIST(last_age_weight),
1202 NULL,
1203};
1204ATTRIBUTE_GROUPS(f2fs);
1205
1206static struct attribute *f2fs_feat_attrs[] = {
1207#ifdef CONFIG_FS_ENCRYPTION
1208 ATTR_LIST(encryption),
1209 ATTR_LIST(test_dummy_encryption_v2),
1210#if IS_ENABLED(CONFIG_UNICODE)
1211 ATTR_LIST(encrypted_casefold),
1212#endif
1213#endif /* CONFIG_FS_ENCRYPTION */
1214#ifdef CONFIG_BLK_DEV_ZONED
1215 ATTR_LIST(block_zoned),
1216#endif
1217 ATTR_LIST(atomic_write),
1218 ATTR_LIST(extra_attr),
1219 ATTR_LIST(project_quota),
1220 ATTR_LIST(inode_checksum),
1221 ATTR_LIST(flexible_inline_xattr),
1222 ATTR_LIST(quota_ino),
1223 ATTR_LIST(inode_crtime),
1224 ATTR_LIST(lost_found),
1225#ifdef CONFIG_FS_VERITY
1226 ATTR_LIST(verity),
1227#endif
1228 ATTR_LIST(sb_checksum),
1229#if IS_ENABLED(CONFIG_UNICODE)
1230 ATTR_LIST(casefold),
1231#endif
1232 ATTR_LIST(readonly),
1233#ifdef CONFIG_F2FS_FS_COMPRESSION
1234 ATTR_LIST(compression),
1235#endif
1236 ATTR_LIST(pin_file),
1237 NULL,
1238};
1239ATTRIBUTE_GROUPS(f2fs_feat);
1240
1241F2FS_GENERAL_RO_ATTR(sb_status);
1242F2FS_GENERAL_RO_ATTR(cp_status);
1243F2FS_GENERAL_RO_ATTR(issued_discard);
1244F2FS_GENERAL_RO_ATTR(queued_discard);
1245F2FS_GENERAL_RO_ATTR(undiscard_blks);
1246
1247static struct attribute *f2fs_stat_attrs[] = {
1248 ATTR_LIST(sb_status),
1249 ATTR_LIST(cp_status),
1250 ATTR_LIST(issued_discard),
1251 ATTR_LIST(queued_discard),
1252 ATTR_LIST(undiscard_blks),
1253 NULL,
1254};
1255ATTRIBUTE_GROUPS(f2fs_stat);
1256
1257F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1258F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1259F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1260F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1261F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1262F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1263F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1264F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1265F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1266F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1267F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1268F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1269F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1270F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1271
1272static struct attribute *f2fs_sb_feat_attrs[] = {
1273 ATTR_LIST(sb_encryption),
1274 ATTR_LIST(sb_block_zoned),
1275 ATTR_LIST(sb_extra_attr),
1276 ATTR_LIST(sb_project_quota),
1277 ATTR_LIST(sb_inode_checksum),
1278 ATTR_LIST(sb_flexible_inline_xattr),
1279 ATTR_LIST(sb_quota_ino),
1280 ATTR_LIST(sb_inode_crtime),
1281 ATTR_LIST(sb_lost_found),
1282 ATTR_LIST(sb_verity),
1283 ATTR_LIST(sb_sb_checksum),
1284 ATTR_LIST(sb_casefold),
1285 ATTR_LIST(sb_compression),
1286 ATTR_LIST(sb_readonly),
1287 NULL,
1288};
1289ATTRIBUTE_GROUPS(f2fs_sb_feat);
1290
1291static const struct sysfs_ops f2fs_attr_ops = {
1292 .show = f2fs_attr_show,
1293 .store = f2fs_attr_store,
1294};
1295
1296static const struct kobj_type f2fs_sb_ktype = {
1297 .default_groups = f2fs_groups,
1298 .sysfs_ops = &f2fs_attr_ops,
1299 .release = f2fs_sb_release,
1300};
1301
1302static const struct kobj_type f2fs_ktype = {
1303 .sysfs_ops = &f2fs_attr_ops,
1304};
1305
1306static struct kset f2fs_kset = {
1307 .kobj = {.ktype = &f2fs_ktype},
1308};
1309
1310static const struct kobj_type f2fs_feat_ktype = {
1311 .default_groups = f2fs_feat_groups,
1312 .sysfs_ops = &f2fs_attr_ops,
1313};
1314
1315static struct kobject f2fs_feat = {
1316 .kset = &f2fs_kset,
1317};
1318
1319static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
1320 struct attribute *attr, char *buf)
1321{
1322 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1323 s_stat_kobj);
1324 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1325
1326 return a->show ? a->show(a, sbi, buf) : 0;
1327}
1328
1329static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
1330 const char *buf, size_t len)
1331{
1332 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1333 s_stat_kobj);
1334 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1335
1336 return a->store ? a->store(a, sbi, buf, len) : 0;
1337}
1338
1339static void f2fs_stat_kobj_release(struct kobject *kobj)
1340{
1341 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1342 s_stat_kobj);
1343 complete(&sbi->s_stat_kobj_unregister);
1344}
1345
1346static const struct sysfs_ops f2fs_stat_attr_ops = {
1347 .show = f2fs_stat_attr_show,
1348 .store = f2fs_stat_attr_store,
1349};
1350
1351static const struct kobj_type f2fs_stat_ktype = {
1352 .default_groups = f2fs_stat_groups,
1353 .sysfs_ops = &f2fs_stat_attr_ops,
1354 .release = f2fs_stat_kobj_release,
1355};
1356
1357static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
1358 struct attribute *attr, char *buf)
1359{
1360 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1361 s_feature_list_kobj);
1362 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1363
1364 return a->show ? a->show(a, sbi, buf) : 0;
1365}
1366
1367static void f2fs_feature_list_kobj_release(struct kobject *kobj)
1368{
1369 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1370 s_feature_list_kobj);
1371 complete(&sbi->s_feature_list_kobj_unregister);
1372}
1373
1374static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1375 .show = f2fs_sb_feat_attr_show,
1376};
1377
1378static const struct kobj_type f2fs_feature_list_ktype = {
1379 .default_groups = f2fs_sb_feat_groups,
1380 .sysfs_ops = &f2fs_feature_list_attr_ops,
1381 .release = f2fs_feature_list_kobj_release,
1382};
1383
1384static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
1385 void *offset)
1386{
1387 struct super_block *sb = seq->private;
1388 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1389 unsigned int total_segs =
1390 le32_to_cpu(sbi->raw_super->segment_count_main);
1391 int i;
1392
1393 seq_puts(seq, "format: segment_type|valid_blocks\n"
1394 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1395
1396 for (i = 0; i < total_segs; i++) {
1397 struct seg_entry *se = get_seg_entry(sbi, i);
1398
1399 if ((i % 10) == 0)
1400 seq_printf(seq, "%-10d", i);
1401 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
1402 if ((i % 10) == 9 || i == (total_segs - 1))
1403 seq_putc(seq, '\n');
1404 else
1405 seq_putc(seq, ' ');
1406 }
1407
1408 return 0;
1409}
1410
1411static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
1412 void *offset)
1413{
1414 struct super_block *sb = seq->private;
1415 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1416 unsigned int total_segs =
1417 le32_to_cpu(sbi->raw_super->segment_count_main);
1418 int i, j;
1419
1420 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
1421 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1422
1423 for (i = 0; i < total_segs; i++) {
1424 struct seg_entry *se = get_seg_entry(sbi, i);
1425
1426 seq_printf(seq, "%-10d", i);
1427 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
1428 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
1429 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
1430 seq_putc(seq, '\n');
1431 }
1432 return 0;
1433}
1434
1435static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
1436 void *offset)
1437{
1438 struct super_block *sb = seq->private;
1439 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1440 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1441 int i;
1442
1443 seq_puts(seq, "format: victim_secmap bitmaps\n");
1444
1445 for (i = 0; i < MAIN_SECS(sbi); i++) {
1446 if ((i % 10) == 0)
1447 seq_printf(seq, "%-10d", i);
1448 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
1449 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
1450 seq_putc(seq, '\n');
1451 else
1452 seq_putc(seq, ' ');
1453 }
1454 return 0;
1455}
1456
1457static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
1458 void *offset)
1459{
1460 struct super_block *sb = seq->private;
1461 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1462 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1463 int i, count;
1464
1465 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n");
1466 if (!f2fs_realtime_discard_enable(sbi))
1467 return 0;
1468
1469 if (dcc) {
1470 mutex_lock(&dcc->cmd_lock);
1471 for (i = 0; i < MAX_PLIST_NUM; i++) {
1472 struct list_head *pend_list;
1473 struct discard_cmd *dc, *tmp;
1474
1475 if (i % 8 == 0)
1476 seq_printf(seq, " %-3d", i);
1477 count = 0;
1478 pend_list = &dcc->pend_list[i];
1479 list_for_each_entry_safe(dc, tmp, pend_list, list)
1480 count++;
1481 if (count)
1482 seq_printf(seq, " %7d", count);
1483 else
1484 seq_puts(seq, " .");
1485 if (i % 8 == 7)
1486 seq_putc(seq, '\n');
1487 }
1488 seq_putc(seq, '\n');
1489 mutex_unlock(&dcc->cmd_lock);
1490 }
1491
1492 return 0;
1493}
1494
1495static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
1496 void *offset)
1497{
1498 struct super_block *sb = seq->private;
1499 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1500 int i;
1501
1502 seq_printf(seq, "Address Layout : %5luB Block address (# of Segments)\n",
1503 F2FS_BLKSIZE);
1504 seq_printf(seq, " SB : %12s\n", "0/1024B");
1505 seq_printf(seq, " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi));
1506 seq_printf(seq, " Checkpoint : 0x%010x (%10d)\n",
1507 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2);
1508 seq_printf(seq, " SIT : 0x%010x (%10d)\n",
1509 SIT_I(sbi)->sit_base_addr,
1510 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit));
1511 seq_printf(seq, " NAT : 0x%010x (%10d)\n",
1512 NM_I(sbi)->nat_blkaddr,
1513 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat));
1514 seq_printf(seq, " SSA : 0x%010x (%10d)\n",
1515 SM_I(sbi)->ssa_blkaddr,
1516 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa));
1517 seq_printf(seq, " Main : 0x%010x (%10d)\n",
1518 SM_I(sbi)->main_blkaddr,
1519 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
1520 seq_printf(seq, " # of Sections : %12d\n",
1521 le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
1522 seq_printf(seq, " Segs/Sections : %12d\n",
1523 SEGS_PER_SEC(sbi));
1524 seq_printf(seq, " Section size : %12d MB\n",
1525 SEGS_PER_SEC(sbi) << 1);
1526
1527 if (!f2fs_is_multi_device(sbi))
1528 return 0;
1529
1530 seq_puts(seq, "\nDisk Map for multi devices:\n");
1531 for (i = 0; i < sbi->s_ndevs; i++)
1532 seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n",
1533 i, bdev_is_zoned(FDEV(i).bdev),
1534 FDEV(i).start_blk, FDEV(i).end_blk,
1535 FDEV(i).path);
1536 return 0;
1537}
1538
1539int __init f2fs_init_sysfs(void)
1540{
1541 int ret;
1542
1543 kobject_set_name(&f2fs_kset.kobj, "f2fs");
1544 f2fs_kset.kobj.parent = fs_kobj;
1545 ret = kset_register(&f2fs_kset);
1546 if (ret)
1547 return ret;
1548
1549 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
1550 NULL, "features");
1551 if (ret)
1552 goto put_kobject;
1553
1554 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
1555 if (!f2fs_proc_root) {
1556 ret = -ENOMEM;
1557 goto put_kobject;
1558 }
1559
1560 return 0;
1561put_kobject:
1562 kobject_put(&f2fs_feat);
1563 kset_unregister(&f2fs_kset);
1564 return ret;
1565}
1566
1567void f2fs_exit_sysfs(void)
1568{
1569 kobject_put(&f2fs_feat);
1570 kset_unregister(&f2fs_kset);
1571 remove_proc_entry("fs/f2fs", NULL);
1572 f2fs_proc_root = NULL;
1573}
1574
1575int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
1576{
1577 struct super_block *sb = sbi->sb;
1578 int err;
1579
1580 sbi->s_kobj.kset = &f2fs_kset;
1581 init_completion(&sbi->s_kobj_unregister);
1582 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
1583 "%s", sb->s_id);
1584 if (err)
1585 goto put_sb_kobj;
1586
1587 sbi->s_stat_kobj.kset = &f2fs_kset;
1588 init_completion(&sbi->s_stat_kobj_unregister);
1589 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
1590 &sbi->s_kobj, "stat");
1591 if (err)
1592 goto put_stat_kobj;
1593
1594 sbi->s_feature_list_kobj.kset = &f2fs_kset;
1595 init_completion(&sbi->s_feature_list_kobj_unregister);
1596 err = kobject_init_and_add(&sbi->s_feature_list_kobj,
1597 &f2fs_feature_list_ktype,
1598 &sbi->s_kobj, "feature_list");
1599 if (err)
1600 goto put_feature_list_kobj;
1601
1602 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
1603 if (!sbi->s_proc) {
1604 err = -ENOMEM;
1605 goto put_feature_list_kobj;
1606 }
1607
1608 proc_create_single_data("segment_info", 0444, sbi->s_proc,
1609 segment_info_seq_show, sb);
1610 proc_create_single_data("segment_bits", 0444, sbi->s_proc,
1611 segment_bits_seq_show, sb);
1612#ifdef CONFIG_F2FS_IOSTAT
1613 proc_create_single_data("iostat_info", 0444, sbi->s_proc,
1614 iostat_info_seq_show, sb);
1615#endif
1616 proc_create_single_data("victim_bits", 0444, sbi->s_proc,
1617 victim_bits_seq_show, sb);
1618 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
1619 discard_plist_seq_show, sb);
1620 proc_create_single_data("disk_map", 0444, sbi->s_proc,
1621 disk_map_seq_show, sb);
1622 return 0;
1623put_feature_list_kobj:
1624 kobject_put(&sbi->s_feature_list_kobj);
1625 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1626put_stat_kobj:
1627 kobject_put(&sbi->s_stat_kobj);
1628 wait_for_completion(&sbi->s_stat_kobj_unregister);
1629put_sb_kobj:
1630 kobject_put(&sbi->s_kobj);
1631 wait_for_completion(&sbi->s_kobj_unregister);
1632 return err;
1633}
1634
1635void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
1636{
1637 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root);
1638
1639 kobject_put(&sbi->s_stat_kobj);
1640 wait_for_completion(&sbi->s_stat_kobj_unregister);
1641 kobject_put(&sbi->s_feature_list_kobj);
1642 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1643
1644 kobject_put(&sbi->s_kobj);
1645 wait_for_completion(&sbi->s_kobj_unregister);
1646}