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
64struct f2fs_base_attr {
65 struct attribute attr;
66 ssize_t (*show)(struct f2fs_base_attr *a, char *buf);
67 ssize_t (*store)(struct f2fs_base_attr *a, const char *buf, size_t len);
68};
69
70static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
71 struct f2fs_sb_info *sbi, char *buf);
72
73static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
74{
75 if (struct_type == GC_THREAD)
76 return (unsigned char *)sbi->gc_thread;
77 else if (struct_type == SM_INFO)
78 return (unsigned char *)SM_I(sbi);
79 else if (struct_type == DCC_INFO)
80 return (unsigned char *)SM_I(sbi)->dcc_info;
81 else if (struct_type == NM_INFO)
82 return (unsigned char *)NM_I(sbi);
83 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
84 return (unsigned char *)sbi;
85#ifdef CONFIG_F2FS_FAULT_INJECTION
86 else if (struct_type == FAULT_INFO_RATE ||
87 struct_type == FAULT_INFO_TYPE)
88 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
89#endif
90#ifdef CONFIG_F2FS_STAT_FS
91 else if (struct_type == STAT_INFO)
92 return (unsigned char *)F2FS_STAT(sbi);
93#endif
94 else if (struct_type == CPRC_INFO)
95 return (unsigned char *)&sbi->cprc_info;
96 else if (struct_type == ATGC_INFO)
97 return (unsigned char *)&sbi->am;
98 return NULL;
99}
100
101static ssize_t dirty_segments_show(struct f2fs_attr *a,
102 struct f2fs_sb_info *sbi, char *buf)
103{
104 return sysfs_emit(buf, fmt: "%llu\n",
105 (unsigned long long)(dirty_segments(sbi)));
106}
107
108static ssize_t free_segments_show(struct f2fs_attr *a,
109 struct f2fs_sb_info *sbi, char *buf)
110{
111 return sysfs_emit(buf, fmt: "%llu\n",
112 (unsigned long long)(free_segments(sbi)));
113}
114
115static ssize_t ovp_segments_show(struct f2fs_attr *a,
116 struct f2fs_sb_info *sbi, char *buf)
117{
118 return sysfs_emit(buf, fmt: "%llu\n",
119 (unsigned long long)(overprovision_segments(sbi)));
120}
121
122static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
123 struct f2fs_sb_info *sbi, char *buf)
124{
125 return sysfs_emit(buf, fmt: "%llu\n",
126 (unsigned long long)(sbi->kbytes_written +
127 ((f2fs_get_sectors_written(sbi) -
128 sbi->sectors_written_start) >> 1)));
129}
130
131static ssize_t sb_status_show(struct f2fs_attr *a,
132 struct f2fs_sb_info *sbi, char *buf)
133{
134 return sysfs_emit(buf, fmt: "%lx\n", sbi->s_flag);
135}
136
137static ssize_t cp_status_show(struct f2fs_attr *a,
138 struct f2fs_sb_info *sbi, char *buf)
139{
140 return sysfs_emit(buf, fmt: "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags));
141}
142
143static ssize_t pending_discard_show(struct f2fs_attr *a,
144 struct f2fs_sb_info *sbi, char *buf)
145{
146 if (!SM_I(sbi)->dcc_info)
147 return -EINVAL;
148 return sysfs_emit(buf, fmt: "%llu\n", (unsigned long long)atomic_read(
149 v: &SM_I(sbi)->dcc_info->discard_cmd_cnt));
150}
151
152static ssize_t issued_discard_show(struct f2fs_attr *a,
153 struct f2fs_sb_info *sbi, char *buf)
154{
155 if (!SM_I(sbi)->dcc_info)
156 return -EINVAL;
157 return sysfs_emit(buf, fmt: "%llu\n", (unsigned long long)atomic_read(
158 v: &SM_I(sbi)->dcc_info->issued_discard));
159}
160
161static ssize_t queued_discard_show(struct f2fs_attr *a,
162 struct f2fs_sb_info *sbi, char *buf)
163{
164 if (!SM_I(sbi)->dcc_info)
165 return -EINVAL;
166 return sysfs_emit(buf, fmt: "%llu\n", (unsigned long long)atomic_read(
167 v: &SM_I(sbi)->dcc_info->queued_discard));
168}
169
170static ssize_t undiscard_blks_show(struct f2fs_attr *a,
171 struct f2fs_sb_info *sbi, char *buf)
172{
173 if (!SM_I(sbi)->dcc_info)
174 return -EINVAL;
175 return sysfs_emit(buf, fmt: "%u\n",
176 SM_I(sbi)->dcc_info->undiscard_blks);
177}
178
179static ssize_t atgc_enabled_show(struct f2fs_attr *a,
180 struct f2fs_sb_info *sbi, char *buf)
181{
182 return sysfs_emit(buf, fmt: "%d\n", sbi->am.atgc_enabled ? 1 : 0);
183}
184
185static ssize_t gc_mode_show(struct f2fs_attr *a,
186 struct f2fs_sb_info *sbi, char *buf)
187{
188 return sysfs_emit(buf, fmt: "%s\n", gc_mode_names[sbi->gc_mode]);
189}
190
191static ssize_t features_show(struct f2fs_attr *a,
192 struct f2fs_sb_info *sbi, char *buf)
193{
194 int len = 0;
195
196 if (f2fs_sb_has_encrypt(sbi))
197 len += sysfs_emit_at(buf, at: len, fmt: "%s",
198 "encryption");
199 if (f2fs_sb_has_blkzoned(sbi))
200 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
201 len ? ", " : "", "blkzoned");
202 if (f2fs_sb_has_extra_attr(sbi))
203 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
204 len ? ", " : "", "extra_attr");
205 if (f2fs_sb_has_project_quota(sbi))
206 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
207 len ? ", " : "", "projquota");
208 if (f2fs_sb_has_inode_chksum(sbi))
209 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
210 len ? ", " : "", "inode_checksum");
211 if (f2fs_sb_has_flexible_inline_xattr(sbi))
212 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
213 len ? ", " : "", "flexible_inline_xattr");
214 if (f2fs_sb_has_quota_ino(sbi))
215 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
216 len ? ", " : "", "quota_ino");
217 if (f2fs_sb_has_inode_crtime(sbi))
218 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
219 len ? ", " : "", "inode_crtime");
220 if (f2fs_sb_has_lost_found(sbi))
221 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
222 len ? ", " : "", "lost_found");
223 if (f2fs_sb_has_verity(sbi))
224 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
225 len ? ", " : "", "verity");
226 if (f2fs_sb_has_sb_chksum(sbi))
227 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
228 len ? ", " : "", "sb_checksum");
229 if (f2fs_sb_has_casefold(sbi))
230 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
231 len ? ", " : "", "casefold");
232 if (f2fs_sb_has_readonly(sbi))
233 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
234 len ? ", " : "", "readonly");
235 if (f2fs_sb_has_compression(sbi))
236 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
237 len ? ", " : "", "compression");
238 if (f2fs_sb_has_packed_ssa(sbi))
239 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
240 len ? ", " : "", "packed_ssa");
241 len += sysfs_emit_at(buf, at: len, fmt: "%s%s",
242 len ? ", " : "", "pin_file");
243 len += sysfs_emit_at(buf, at: len, fmt: "\n");
244 return len;
245}
246
247static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
248 struct f2fs_sb_info *sbi, char *buf)
249{
250 return sysfs_emit(buf, fmt: "%u\n", sbi->current_reserved_blocks);
251}
252
253static ssize_t unusable_show(struct f2fs_attr *a,
254 struct f2fs_sb_info *sbi, char *buf)
255{
256 block_t unusable;
257
258 if (test_opt(sbi, DISABLE_CHECKPOINT))
259 unusable = sbi->unusable_block_count;
260 else
261 unusable = f2fs_get_unusable_blocks(sbi);
262 return sysfs_emit(buf, fmt: "%llu\n", (unsigned long long)unusable);
263}
264
265static ssize_t encoding_show(struct f2fs_attr *a,
266 struct f2fs_sb_info *sbi, char *buf)
267{
268#if IS_ENABLED(CONFIG_UNICODE)
269 struct super_block *sb = sbi->sb;
270
271 if (f2fs_sb_has_casefold(sbi))
272 return sysfs_emit(buf, fmt: "UTF-8 (%d.%d.%d)\n",
273 (sb->s_encoding->version >> 16) & 0xff,
274 (sb->s_encoding->version >> 8) & 0xff,
275 sb->s_encoding->version & 0xff);
276#endif
277 return sysfs_emit(buf, fmt: "(none)\n");
278}
279
280static ssize_t encoding_flags_show(struct f2fs_attr *a,
281 struct f2fs_sb_info *sbi, char *buf)
282{
283 return sysfs_emit(buf, fmt: "%x\n",
284 le16_to_cpu(F2FS_RAW_SUPER(sbi)->s_encoding_flags));
285}
286
287static ssize_t effective_lookup_mode_show(struct f2fs_attr *a,
288 struct f2fs_sb_info *sbi, char *buf)
289{
290 switch (F2FS_OPTION(sbi).lookup_mode) {
291 case LOOKUP_PERF:
292 return sysfs_emit(buf, fmt: "perf\n");
293 case LOOKUP_COMPAT:
294 return sysfs_emit(buf, fmt: "compat\n");
295 case LOOKUP_AUTO:
296 if (sb_no_casefold_compat_fallback(sbi->sb))
297 return sysfs_emit(buf, fmt: "auto:perf\n");
298 return sysfs_emit(buf, fmt: "auto:compat\n");
299 }
300 return 0;
301}
302
303static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
304 struct f2fs_sb_info *sbi, char *buf)
305{
306 return sysfs_emit(buf, fmt: "%llu\n", SIT_I(sbi)->mounted_time);
307}
308
309#ifdef CONFIG_F2FS_STAT_FS
310static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
311 struct f2fs_sb_info *sbi, char *buf)
312{
313 struct f2fs_stat_info *si = F2FS_STAT(sbi);
314
315 return sysfs_emit(buf, fmt: "%llu\n",
316 (unsigned long long)(si->tot_blks -
317 (si->bg_data_blks + si->bg_node_blks)));
318}
319
320static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
321 struct f2fs_sb_info *sbi, char *buf)
322{
323 struct f2fs_stat_info *si = F2FS_STAT(sbi);
324
325 return sysfs_emit(buf, fmt: "%llu\n",
326 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
327}
328
329static ssize_t avg_vblocks_show(struct f2fs_attr *a,
330 struct f2fs_sb_info *sbi, char *buf)
331{
332 struct f2fs_stat_info *si = F2FS_STAT(sbi);
333
334 si->dirty_count = dirty_segments(sbi);
335 f2fs_update_sit_info(sbi);
336 return sysfs_emit(buf, fmt: "%llu\n", (unsigned long long)(si->avg_vblocks));
337}
338#endif
339
340static ssize_t main_blkaddr_show(struct f2fs_attr *a,
341 struct f2fs_sb_info *sbi, char *buf)
342{
343 return sysfs_emit(buf, fmt: "%llu\n",
344 (unsigned long long)MAIN_BLKADDR(sbi));
345}
346
347static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
348 struct f2fs_sb_info *sbi, char *buf)
349{
350 unsigned char *ptr = NULL;
351 unsigned int *ui;
352
353 ptr = __struct_ptr(sbi, struct_type: a->struct_type);
354 if (!ptr)
355 return -EINVAL;
356
357 if (!strcmp(a->attr.name, "extension_list")) {
358 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
359 sbi->raw_super->extension_list;
360 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
361 int hot_count = sbi->raw_super->hot_ext_count;
362 int len = 0, i;
363
364 len += sysfs_emit_at(buf, at: len, fmt: "cold file extension:\n");
365 for (i = 0; i < cold_count; i++)
366 len += sysfs_emit_at(buf, at: len, fmt: "%s\n", extlist[i]);
367
368 len += sysfs_emit_at(buf, at: len, fmt: "hot file extension:\n");
369 for (i = cold_count; i < cold_count + hot_count; i++)
370 len += sysfs_emit_at(buf, at: len, fmt: "%s\n", extlist[i]);
371
372 return len;
373 }
374
375 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
376 struct ckpt_req_control *cprc = &sbi->cprc_info;
377 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
378 int level = IOPRIO_PRIO_LEVEL(cprc->ckpt_thread_ioprio);
379
380 if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE)
381 return -EINVAL;
382
383 return sysfs_emit(buf, fmt: "%s,%d\n",
384 class == IOPRIO_CLASS_RT ? "rt" : "be", level);
385 }
386
387#ifdef CONFIG_F2FS_FS_COMPRESSION
388 if (!strcmp(a->attr.name, "compr_written_block"))
389 return sysfs_emit(buf, fmt: "%llu\n", sbi->compr_written_block);
390
391 if (!strcmp(a->attr.name, "compr_saved_block"))
392 return sysfs_emit(buf, fmt: "%llu\n", sbi->compr_saved_block);
393
394 if (!strcmp(a->attr.name, "compr_new_inode"))
395 return sysfs_emit(buf, fmt: "%u\n", sbi->compr_new_inode);
396#endif
397
398 if (!strcmp(a->attr.name, "gc_segment_mode"))
399 return sysfs_emit(buf, fmt: "%u\n", sbi->gc_segment_mode);
400
401 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
402 return sysfs_emit(buf, fmt: "%u\n",
403 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]);
404 }
405
406 if (!strcmp(a->attr.name, "current_atomic_write")) {
407 s64 current_write = atomic64_read(v: &sbi->current_atomic_write);
408
409 return sysfs_emit(buf, fmt: "%lld\n", current_write);
410 }
411
412 if (!strcmp(a->attr.name, "peak_atomic_write"))
413 return sysfs_emit(buf, fmt: "%lld\n", sbi->peak_atomic_write);
414
415 if (!strcmp(a->attr.name, "committed_atomic_block"))
416 return sysfs_emit(buf, fmt: "%llu\n", sbi->committed_atomic_block);
417
418 if (!strcmp(a->attr.name, "revoked_atomic_block"))
419 return sysfs_emit(buf, fmt: "%llu\n", sbi->revoked_atomic_block);
420
421#ifdef CONFIG_F2FS_STAT_FS
422 if (!strcmp(a->attr.name, "cp_foreground_calls"))
423 return sysfs_emit(buf, fmt: "%d\n",
424 atomic_read(v: &sbi->cp_call_count[TOTAL_CALL]) -
425 atomic_read(v: &sbi->cp_call_count[BACKGROUND]));
426 if (!strcmp(a->attr.name, "cp_background_calls"))
427 return sysfs_emit(buf, fmt: "%d\n",
428 atomic_read(v: &sbi->cp_call_count[BACKGROUND]));
429#endif
430
431 ui = (unsigned int *)(ptr + a->offset);
432
433 return sysfs_emit(buf, fmt: "%u\n", *ui);
434}
435
436static ssize_t __sbi_store(struct f2fs_attr *a,
437 struct f2fs_sb_info *sbi,
438 const char *buf, size_t count)
439{
440 unsigned char *ptr;
441 unsigned long t;
442 unsigned int *ui;
443 ssize_t ret;
444
445 ptr = __struct_ptr(sbi, struct_type: a->struct_type);
446 if (!ptr)
447 return -EINVAL;
448
449 if (!strcmp(a->attr.name, "extension_list")) {
450 const char *name = strim((char *)buf);
451 bool set = true, hot;
452
453 if (!strncmp(name, "[h]", 3))
454 hot = true;
455 else if (!strncmp(name, "[c]", 3))
456 hot = false;
457 else
458 return -EINVAL;
459
460 name += 3;
461
462 if (*name == '!') {
463 name++;
464 set = false;
465 }
466
467 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN)
468 return -EINVAL;
469
470 f2fs_down_write(sem: &sbi->sb_lock);
471
472 ret = f2fs_update_extension_list(sbi, name, hot, set);
473 if (ret)
474 goto out;
475
476 ret = f2fs_commit_super(sbi, recover: false);
477 if (ret)
478 f2fs_update_extension_list(sbi, name, hot, set: !set);
479out:
480 f2fs_up_write(sem: &sbi->sb_lock);
481 return ret ? ret : count;
482 }
483
484 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
485 const char *name = strim((char *)buf);
486 struct ckpt_req_control *cprc = &sbi->cprc_info;
487 int class;
488 long level;
489 int ret;
490
491 if (!strncmp(name, "rt,", 3))
492 class = IOPRIO_CLASS_RT;
493 else if (!strncmp(name, "be,", 3))
494 class = IOPRIO_CLASS_BE;
495 else
496 return -EINVAL;
497
498 name += 3;
499 ret = kstrtol(s: name, base: 10, res: &level);
500 if (ret)
501 return ret;
502 if (level >= IOPRIO_NR_LEVELS || level < 0)
503 return -EINVAL;
504
505 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, level);
506 if (test_opt(sbi, MERGE_CHECKPOINT)) {
507 ret = set_task_ioprio(task: cprc->f2fs_issue_ckpt,
508 ioprio: cprc->ckpt_thread_ioprio);
509 if (ret)
510 return ret;
511 }
512
513 return count;
514 }
515
516 ui = (unsigned int *)(ptr + a->offset);
517
518 ret = kstrtoul(s: skip_spaces(buf), base: 0, res: &t);
519 if (ret < 0)
520 return ret;
521#ifdef CONFIG_F2FS_FAULT_INJECTION
522 if (a->struct_type == FAULT_INFO_TYPE) {
523 if (f2fs_build_fault_attr(sbi, rate: 0, type: t, fo: FAULT_TYPE))
524 return -EINVAL;
525 return count;
526 }
527 if (a->struct_type == FAULT_INFO_RATE) {
528 if (f2fs_build_fault_attr(sbi, rate: t, type: 0, fo: FAULT_RATE))
529 return -EINVAL;
530 return count;
531 }
532#endif
533 if (a->struct_type == RESERVED_BLOCKS) {
534 spin_lock(lock: &sbi->stat_lock);
535 if (t > (unsigned long)(sbi->user_block_count -
536 F2FS_OPTION(sbi).root_reserved_blocks)) {
537 spin_unlock(lock: &sbi->stat_lock);
538 return -EINVAL;
539 }
540 *ui = t;
541 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
542 sbi->user_block_count - valid_user_blocks(sbi));
543 spin_unlock(lock: &sbi->stat_lock);
544 return count;
545 }
546
547 if (!strcmp(a->attr.name, "discard_io_aware_gran")) {
548 if (t > MAX_PLIST_NUM)
549 return -EINVAL;
550 if (!f2fs_block_unit_discard(sbi))
551 return -EINVAL;
552 if (t == *ui)
553 return count;
554 *ui = t;
555 return count;
556 }
557
558 if (!strcmp(a->attr.name, "discard_granularity")) {
559 if (t == 0 || t > MAX_PLIST_NUM)
560 return -EINVAL;
561 if (!f2fs_block_unit_discard(sbi))
562 return -EINVAL;
563 if (t == *ui)
564 return count;
565 *ui = t;
566 return count;
567 }
568
569 if (!strcmp(a->attr.name, "max_ordered_discard")) {
570 if (t == 0 || t > MAX_PLIST_NUM)
571 return -EINVAL;
572 if (!f2fs_block_unit_discard(sbi))
573 return -EINVAL;
574 *ui = t;
575 return count;
576 }
577
578 if (!strcmp(a->attr.name, "discard_urgent_util")) {
579 if (t > 100)
580 return -EINVAL;
581 *ui = t;
582 return count;
583 }
584
585 if (!strcmp(a->attr.name, "discard_io_aware")) {
586 if (t >= DPOLICY_IO_AWARE_MAX)
587 return -EINVAL;
588 *ui = t;
589 return count;
590 }
591
592 if (!strcmp(a->attr.name, "migration_granularity")) {
593 if (t == 0 || t > SEGS_PER_SEC(sbi))
594 return -EINVAL;
595 }
596
597 if (!strcmp(a->attr.name, "migration_window_granularity")) {
598 if (t == 0 || t > SEGS_PER_SEC(sbi))
599 return -EINVAL;
600 }
601
602 if (!strcmp(a->attr.name, "gc_urgent")) {
603 if (t == 0) {
604 sbi->gc_mode = GC_NORMAL;
605 } else if (t == 1) {
606 sbi->gc_mode = GC_URGENT_HIGH;
607 if (sbi->gc_thread) {
608 sbi->gc_thread->gc_wake = true;
609 wake_up_interruptible_all(
610 &sbi->gc_thread->gc_wait_queue_head);
611 wake_up_discard_thread(sbi, force: true);
612 }
613 } else if (t == 2) {
614 sbi->gc_mode = GC_URGENT_LOW;
615 } else if (t == 3) {
616 sbi->gc_mode = GC_URGENT_MID;
617 if (sbi->gc_thread) {
618 sbi->gc_thread->gc_wake = true;
619 wake_up_interruptible_all(
620 &sbi->gc_thread->gc_wait_queue_head);
621 }
622 } else {
623 return -EINVAL;
624 }
625 return count;
626 }
627 if (!strcmp(a->attr.name, "gc_idle")) {
628 if (t == GC_IDLE_CB) {
629 sbi->gc_mode = GC_IDLE_CB;
630 } else if (t == GC_IDLE_GREEDY) {
631 sbi->gc_mode = GC_IDLE_GREEDY;
632 } else if (t == GC_IDLE_AT) {
633 if (!sbi->am.atgc_enabled)
634 return -EINVAL;
635 sbi->gc_mode = GC_IDLE_AT;
636 } else {
637 sbi->gc_mode = GC_NORMAL;
638 }
639 return count;
640 }
641
642 if (!strcmp(a->attr.name, "gc_remaining_trials")) {
643 spin_lock(lock: &sbi->gc_remaining_trials_lock);
644 sbi->gc_remaining_trials = t;
645 spin_unlock(lock: &sbi->gc_remaining_trials_lock);
646
647 return count;
648 }
649
650 if (!strcmp(a->attr.name, "gc_no_zoned_gc_percent")) {
651 if (t > 100)
652 return -EINVAL;
653 *ui = (unsigned int)t;
654 return count;
655 }
656
657 if (!strcmp(a->attr.name, "gc_boost_zoned_gc_percent")) {
658 if (t > 100)
659 return -EINVAL;
660 *ui = (unsigned int)t;
661 return count;
662 }
663
664 if (!strcmp(a->attr.name, "gc_valid_thresh_ratio")) {
665 if (t > 100)
666 return -EINVAL;
667 *ui = (unsigned int)t;
668 return count;
669 }
670
671#ifdef CONFIG_F2FS_IOSTAT
672 if (!strcmp(a->attr.name, "iostat_enable")) {
673 sbi->iostat_enable = !!t;
674 if (!sbi->iostat_enable)
675 f2fs_reset_iostat(sbi);
676 return count;
677 }
678
679 if (!strcmp(a->attr.name, "iostat_period_ms")) {
680 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
681 return -EINVAL;
682 spin_lock_irq(lock: &sbi->iostat_lock);
683 sbi->iostat_period_ms = (unsigned int)t;
684 spin_unlock_irq(lock: &sbi->iostat_lock);
685 return count;
686 }
687#endif
688
689#ifdef CONFIG_BLK_DEV_ZONED
690 if (!strcmp(a->attr.name, "blkzone_alloc_policy")) {
691 if (t < BLKZONE_ALLOC_PRIOR_SEQ || t > BLKZONE_ALLOC_PRIOR_CONV)
692 return -EINVAL;
693 sbi->blkzone_alloc_policy = t;
694 return count;
695 }
696#endif
697
698#ifdef CONFIG_F2FS_FS_COMPRESSION
699 if (!strcmp(a->attr.name, "compr_written_block") ||
700 !strcmp(a->attr.name, "compr_saved_block")) {
701 if (t != 0)
702 return -EINVAL;
703 sbi->compr_written_block = 0;
704 sbi->compr_saved_block = 0;
705 return count;
706 }
707
708 if (!strcmp(a->attr.name, "compr_new_inode")) {
709 if (t != 0)
710 return -EINVAL;
711 sbi->compr_new_inode = 0;
712 return count;
713 }
714
715 if (!strcmp(a->attr.name, "compress_percent")) {
716 if (t == 0 || t > 100)
717 return -EINVAL;
718 *ui = t;
719 return count;
720 }
721
722 if (!strcmp(a->attr.name, "compress_watermark")) {
723 if (t == 0 || t > 100)
724 return -EINVAL;
725 *ui = t;
726 return count;
727 }
728#endif
729
730 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
731 if (t > 100)
732 return -EINVAL;
733 sbi->am.candidate_ratio = t;
734 return count;
735 }
736
737 if (!strcmp(a->attr.name, "atgc_age_weight")) {
738 if (t > 100)
739 return -EINVAL;
740 sbi->am.age_weight = t;
741 return count;
742 }
743
744 if (!strcmp(a->attr.name, "gc_segment_mode")) {
745 if (t < MAX_GC_MODE)
746 sbi->gc_segment_mode = t;
747 else
748 return -EINVAL;
749 return count;
750 }
751
752 if (!strcmp(a->attr.name, "gc_pin_file_threshold")) {
753 if (t > MAX_GC_FAILED_PINNED_FILES)
754 return -EINVAL;
755 sbi->gc_pin_file_threshold = t;
756 return count;
757 }
758
759 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
760 if (t != 0)
761 return -EINVAL;
762 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0;
763 return count;
764 }
765
766 if (!strcmp(a->attr.name, "seq_file_ra_mul")) {
767 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL)
768 sbi->seq_file_ra_mul = t;
769 else
770 return -EINVAL;
771 return count;
772 }
773
774 if (!strcmp(a->attr.name, "max_fragment_chunk")) {
775 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
776 sbi->max_fragment_chunk = t;
777 else
778 return -EINVAL;
779 return count;
780 }
781
782 if (!strcmp(a->attr.name, "max_fragment_hole")) {
783 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
784 sbi->max_fragment_hole = t;
785 else
786 return -EINVAL;
787 return count;
788 }
789
790 if (!strcmp(a->attr.name, "peak_atomic_write")) {
791 if (t != 0)
792 return -EINVAL;
793 sbi->peak_atomic_write = 0;
794 return count;
795 }
796
797 if (!strcmp(a->attr.name, "committed_atomic_block")) {
798 if (t != 0)
799 return -EINVAL;
800 sbi->committed_atomic_block = 0;
801 return count;
802 }
803
804 if (!strcmp(a->attr.name, "revoked_atomic_block")) {
805 if (t != 0)
806 return -EINVAL;
807 sbi->revoked_atomic_block = 0;
808 return count;
809 }
810
811 if (!strcmp(a->attr.name, "readdir_ra")) {
812 sbi->readdir_ra = !!t;
813 return count;
814 }
815
816 if (!strcmp(a->attr.name, "hot_data_age_threshold")) {
817 if (t == 0 || t >= sbi->warm_data_age_threshold)
818 return -EINVAL;
819 if (t == *ui)
820 return count;
821 *ui = (unsigned int)t;
822 return count;
823 }
824
825 if (!strcmp(a->attr.name, "warm_data_age_threshold")) {
826 if (t <= sbi->hot_data_age_threshold)
827 return -EINVAL;
828 if (t == *ui)
829 return count;
830 *ui = (unsigned int)t;
831 return count;
832 }
833
834 if (!strcmp(a->attr.name, "last_age_weight")) {
835 if (t > 100)
836 return -EINVAL;
837 if (t == *ui)
838 return count;
839 *ui = (unsigned int)t;
840 return count;
841 }
842
843 if (!strcmp(a->attr.name, "max_read_extent_count")) {
844 if (t > UINT_MAX)
845 return -EINVAL;
846 *ui = (unsigned int)t;
847 return count;
848 }
849
850 if (!strcmp(a->attr.name, "ipu_policy")) {
851 if (t >= BIT(F2FS_IPU_MAX))
852 return -EINVAL;
853 /* allow F2FS_IPU_NOCACHE only for IPU in the pinned file */
854 if (f2fs_lfs_mode(sbi) && (t & ~BIT(F2FS_IPU_NOCACHE)))
855 return -EINVAL;
856 SM_I(sbi)->ipu_policy = (unsigned int)t;
857 return count;
858 }
859
860 if (!strcmp(a->attr.name, "dir_level")) {
861 if (t > MAX_DIR_HASH_DEPTH)
862 return -EINVAL;
863 sbi->dir_level = t;
864 return count;
865 }
866
867 if (!strcmp(a->attr.name, "reserved_pin_section")) {
868 if (t > GET_SEC_FROM_SEG(sbi, overprovision_segments(sbi)))
869 return -EINVAL;
870 *ui = (unsigned int)t;
871 return count;
872 }
873
874 if (!strcmp(a->attr.name, "gc_boost_gc_multiple")) {
875 if (t < 1 || t > SEGS_PER_SEC(sbi))
876 return -EINVAL;
877 sbi->gc_thread->boost_gc_multiple = (unsigned int)t;
878 return count;
879 }
880
881 if (!strcmp(a->attr.name, "gc_boost_gc_greedy")) {
882 if (t > GC_GREEDY)
883 return -EINVAL;
884 sbi->gc_thread->boost_gc_greedy = (unsigned int)t;
885 return count;
886 }
887
888 if (!strcmp(a->attr.name, "bggc_io_aware")) {
889 if (t < AWARE_ALL_IO || t > AWARE_NONE)
890 return -EINVAL;
891 sbi->bggc_io_aware = t;
892 return count;
893 }
894
895 if (!strcmp(a->attr.name, "allocate_section_hint")) {
896 if (t < 0 || t > MAIN_SECS(sbi))
897 return -EINVAL;
898 sbi->allocate_section_hint = t;
899 return count;
900 }
901
902 if (!strcmp(a->attr.name, "allocate_section_policy")) {
903 if (t < ALLOCATE_FORWARD_NOHINT || t > ALLOCATE_FORWARD_FROM_HINT)
904 return -EINVAL;
905 sbi->allocate_section_policy = t;
906 return count;
907 }
908
909 *ui = (unsigned int)t;
910
911 return count;
912}
913
914static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
915 struct f2fs_sb_info *sbi,
916 const char *buf, size_t count)
917{
918 ssize_t ret;
919 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
920 a->struct_type == GC_THREAD);
921
922 if (gc_entry) {
923 if (!down_read_trylock(sem: &sbi->sb->s_umount))
924 return -EAGAIN;
925 }
926 ret = __sbi_store(a, sbi, buf, count);
927 if (gc_entry)
928 up_read(sem: &sbi->sb->s_umount);
929
930 return ret;
931}
932
933static ssize_t f2fs_attr_show(struct kobject *kobj,
934 struct attribute *attr, char *buf)
935{
936 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
937 s_kobj);
938 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
939
940 return a->show ? a->show(a, sbi, buf) : 0;
941}
942
943static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
944 const char *buf, size_t len)
945{
946 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
947 s_kobj);
948 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
949
950 return a->store ? a->store(a, sbi, buf, len) : 0;
951}
952
953static void f2fs_sb_release(struct kobject *kobj)
954{
955 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
956 s_kobj);
957 complete(&sbi->s_kobj_unregister);
958}
959
960static ssize_t f2fs_base_attr_show(struct kobject *kobj,
961 struct attribute *attr, char *buf)
962{
963 struct f2fs_base_attr *a = container_of(attr,
964 struct f2fs_base_attr, attr);
965
966 return a->show ? a->show(a, buf) : 0;
967}
968
969static ssize_t f2fs_base_attr_store(struct kobject *kobj,
970 struct attribute *attr,
971 const char *buf, size_t len)
972{
973 struct f2fs_base_attr *a = container_of(attr,
974 struct f2fs_base_attr, attr);
975
976 return a->store ? a->store(a, buf, len) : 0;
977}
978
979/*
980 * Note that there are three feature list entries:
981 * 1) /sys/fs/f2fs/features
982 * : shows runtime features supported by in-kernel f2fs along with Kconfig.
983 * - ref. F2FS_FEATURE_RO_ATTR()
984 *
985 * 2) /sys/fs/f2fs/$s_id/features <deprecated>
986 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
987 * won't add new feature anymore, and thus, users should check entries in 3)
988 * instead of this 2).
989 *
990 * 3) /sys/fs/f2fs/$s_id/feature_list
991 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows
992 * sysfs entry rule where each entry should expose single value.
993 * This list covers old feature list provided by 2) and beyond. Therefore,
994 * please add new on-disk feature in this list only.
995 * - ref. F2FS_SB_FEATURE_RO_ATTR()
996 */
997static ssize_t f2fs_feature_show(struct f2fs_base_attr *a, char *buf)
998{
999 return sysfs_emit(buf, fmt: "supported\n");
1000}
1001
1002#define F2FS_FEATURE_RO_ATTR(_name) \
1003static struct f2fs_base_attr f2fs_base_attr_##_name = { \
1004 .attr = {.name = __stringify(_name), .mode = 0444 }, \
1005 .show = f2fs_feature_show, \
1006}
1007
1008static ssize_t f2fs_tune_show(struct f2fs_base_attr *a, char *buf)
1009{
1010 unsigned int res = 0;
1011
1012 if (!strcmp(a->attr.name, "reclaim_caches_kb"))
1013 res = f2fs_donate_files();
1014
1015 return sysfs_emit(buf, fmt: "%u\n", res);
1016}
1017
1018static ssize_t f2fs_tune_store(struct f2fs_base_attr *a,
1019 const char *buf, size_t count)
1020{
1021 unsigned long t;
1022 int ret;
1023
1024 ret = kstrtoul(s: skip_spaces(buf), base: 0, res: &t);
1025 if (ret)
1026 return ret;
1027
1028 if (!strcmp(a->attr.name, "reclaim_caches_kb"))
1029 f2fs_reclaim_caches(reclaim_caches_kb: t);
1030
1031 return count;
1032}
1033
1034#define F2FS_TUNE_RW_ATTR(_name) \
1035static struct f2fs_base_attr f2fs_base_attr_##_name = { \
1036 .attr = {.name = __stringify(_name), .mode = 0644 }, \
1037 .show = f2fs_tune_show, \
1038 .store = f2fs_tune_store, \
1039}
1040
1041static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
1042 struct f2fs_sb_info *sbi, char *buf)
1043{
1044 if (F2FS_HAS_FEATURE(sbi, a->id))
1045 return sysfs_emit(buf, fmt: "supported\n");
1046 return sysfs_emit(buf, fmt: "unsupported\n");
1047}
1048
1049#define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \
1050static struct f2fs_attr f2fs_attr_sb_##_name = { \
1051 .attr = {.name = __stringify(_name), .mode = 0444 }, \
1052 .show = f2fs_sb_feature_show, \
1053 .id = F2FS_FEATURE_##_feat, \
1054}
1055
1056#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
1057static struct f2fs_attr f2fs_attr_##_name = { \
1058 .attr = {.name = __stringify(_name), .mode = _mode }, \
1059 .show = _show, \
1060 .store = _store, \
1061 .struct_type = _struct_type, \
1062 .offset = _offset \
1063}
1064
1065#define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
1066 F2FS_ATTR_OFFSET(struct_type, name, 0444, \
1067 f2fs_sbi_show, NULL, \
1068 offsetof(struct struct_name, elname))
1069
1070#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
1071 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
1072 f2fs_sbi_show, f2fs_sbi_store, \
1073 offsetof(struct struct_name, elname))
1074
1075#define F2FS_GENERAL_RO_ATTR(name) \
1076static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
1077
1078#ifdef CONFIG_F2FS_STAT_FS
1079#define STAT_INFO_RO_ATTR(name, elname) \
1080 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname)
1081#endif
1082
1083#define GC_THREAD_RW_ATTR(name, elname) \
1084 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname)
1085
1086#define SM_INFO_RW_ATTR(name, elname) \
1087 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname)
1088
1089#define SM_INFO_GENERAL_RW_ATTR(elname) \
1090 SM_INFO_RW_ATTR(elname, elname)
1091
1092#define DCC_INFO_RW_ATTR(name, elname) \
1093 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname)
1094
1095#define DCC_INFO_GENERAL_RW_ATTR(elname) \
1096 DCC_INFO_RW_ATTR(elname, elname)
1097
1098#define NM_INFO_RW_ATTR(name, elname) \
1099 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname)
1100
1101#define NM_INFO_GENERAL_RW_ATTR(elname) \
1102 NM_INFO_RW_ATTR(elname, elname)
1103
1104#define F2FS_SBI_RW_ATTR(name, elname) \
1105 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname)
1106
1107#define F2FS_SBI_GENERAL_RW_ATTR(elname) \
1108 F2FS_SBI_RW_ATTR(elname, elname)
1109
1110#define F2FS_SBI_GENERAL_RO_ATTR(elname) \
1111 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname)
1112
1113#ifdef CONFIG_F2FS_FAULT_INJECTION
1114#define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \
1115 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname)
1116#endif
1117
1118#define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \
1119 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname)
1120
1121#define CPRC_INFO_GENERAL_RW_ATTR(elname) \
1122 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname)
1123
1124#define ATGC_INFO_RW_ATTR(name, elname) \
1125 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname)
1126
1127/* GC_THREAD ATTR */
1128GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
1129GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
1130GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
1131GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
1132GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent);
1133GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent);
1134GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio);
1135GC_THREAD_RW_ATTR(gc_boost_gc_multiple, boost_gc_multiple);
1136GC_THREAD_RW_ATTR(gc_boost_gc_greedy, boost_gc_greedy);
1137
1138/* SM_INFO ATTR */
1139SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
1140SM_INFO_GENERAL_RW_ATTR(ipu_policy);
1141SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
1142SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
1143SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
1144SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
1145SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
1146SM_INFO_GENERAL_RW_ATTR(reserved_segments);
1147
1148/* DCC_INFO ATTR */
1149DCC_INFO_RW_ATTR(max_small_discards, max_discards);
1150DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
1151DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
1152DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
1153DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
1154DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
1155DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
1156DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
1157DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
1158DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
1159
1160/* NM_INFO ATTR */
1161NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
1162NM_INFO_GENERAL_RW_ATTR(ram_thresh);
1163NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
1164NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
1165
1166/* F2FS_SBI ATTR */
1167F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
1168F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
1169F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
1170F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
1171F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
1172F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
1173F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
1174F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
1175F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
1176F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
1177F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
1178F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
1179F2FS_SBI_GENERAL_RW_ATTR(migration_window_granularity);
1180F2FS_SBI_GENERAL_RW_ATTR(dir_level);
1181F2FS_SBI_GENERAL_RW_ATTR(allocate_section_hint);
1182F2FS_SBI_GENERAL_RW_ATTR(allocate_section_policy);
1183#ifdef CONFIG_F2FS_IOSTAT
1184F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
1185F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
1186#endif
1187F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
1188F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
1189F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
1190F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
1191F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
1192F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
1193F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
1194F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
1195F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
1196#ifdef CONFIG_F2FS_FS_COMPRESSION
1197F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
1198F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
1199F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
1200F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
1201F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
1202#endif
1203/* atomic write */
1204F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
1205F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
1206F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
1207F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
1208/* block age extent cache */
1209F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
1210F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
1211F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
1212/* read extent cache */
1213F2FS_SBI_GENERAL_RW_ATTR(max_read_extent_count);
1214#ifdef CONFIG_BLK_DEV_ZONED
1215F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
1216F2FS_SBI_GENERAL_RO_ATTR(max_open_zones);
1217F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy);
1218#endif
1219F2FS_SBI_GENERAL_RW_ATTR(carve_out);
1220F2FS_SBI_GENERAL_RW_ATTR(reserved_pin_section);
1221F2FS_SBI_GENERAL_RW_ATTR(bggc_io_aware);
1222
1223/* STAT_INFO ATTR */
1224#ifdef CONFIG_F2FS_STAT_FS
1225STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
1226STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
1227STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
1228STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
1229#endif
1230
1231/* FAULT_INFO ATTR */
1232#ifdef CONFIG_F2FS_FAULT_INJECTION
1233FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
1234FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
1235#endif
1236
1237/* RESERVED_BLOCKS ATTR */
1238RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
1239
1240/* CPRC_INFO ATTR */
1241CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
1242
1243/* ATGC_INFO ATTR */
1244ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
1245ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
1246ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
1247ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
1248
1249F2FS_GENERAL_RO_ATTR(dirty_segments);
1250F2FS_GENERAL_RO_ATTR(free_segments);
1251F2FS_GENERAL_RO_ATTR(ovp_segments);
1252F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
1253F2FS_GENERAL_RO_ATTR(features);
1254F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
1255F2FS_GENERAL_RO_ATTR(unusable);
1256F2FS_GENERAL_RO_ATTR(encoding);
1257F2FS_GENERAL_RO_ATTR(encoding_flags);
1258F2FS_GENERAL_RO_ATTR(effective_lookup_mode);
1259F2FS_GENERAL_RO_ATTR(mounted_time_sec);
1260F2FS_GENERAL_RO_ATTR(main_blkaddr);
1261F2FS_GENERAL_RO_ATTR(pending_discard);
1262F2FS_GENERAL_RO_ATTR(atgc_enabled);
1263F2FS_GENERAL_RO_ATTR(gc_mode);
1264#ifdef CONFIG_F2FS_STAT_FS
1265F2FS_GENERAL_RO_ATTR(moved_blocks_background);
1266F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
1267F2FS_GENERAL_RO_ATTR(avg_vblocks);
1268#endif
1269
1270#ifdef CONFIG_FS_ENCRYPTION
1271F2FS_FEATURE_RO_ATTR(encryption);
1272F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
1273#if IS_ENABLED(CONFIG_UNICODE)
1274F2FS_FEATURE_RO_ATTR(encrypted_casefold);
1275#endif
1276#endif /* CONFIG_FS_ENCRYPTION */
1277#ifdef CONFIG_BLK_DEV_ZONED
1278F2FS_FEATURE_RO_ATTR(block_zoned);
1279#endif
1280F2FS_FEATURE_RO_ATTR(atomic_write);
1281F2FS_FEATURE_RO_ATTR(extra_attr);
1282F2FS_FEATURE_RO_ATTR(project_quota);
1283F2FS_FEATURE_RO_ATTR(inode_checksum);
1284F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
1285F2FS_FEATURE_RO_ATTR(quota_ino);
1286F2FS_FEATURE_RO_ATTR(inode_crtime);
1287F2FS_FEATURE_RO_ATTR(lost_found);
1288#ifdef CONFIG_FS_VERITY
1289F2FS_FEATURE_RO_ATTR(verity);
1290#endif
1291F2FS_FEATURE_RO_ATTR(sb_checksum);
1292#if IS_ENABLED(CONFIG_UNICODE)
1293F2FS_FEATURE_RO_ATTR(casefold);
1294#endif
1295F2FS_FEATURE_RO_ATTR(readonly);
1296#ifdef CONFIG_F2FS_FS_COMPRESSION
1297F2FS_FEATURE_RO_ATTR(compression);
1298#endif
1299F2FS_FEATURE_RO_ATTR(pin_file);
1300#ifdef CONFIG_UNICODE
1301F2FS_FEATURE_RO_ATTR(linear_lookup);
1302#endif
1303F2FS_FEATURE_RO_ATTR(packed_ssa);
1304
1305#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
1306static struct attribute *f2fs_attrs[] = {
1307 ATTR_LIST(gc_urgent_sleep_time),
1308 ATTR_LIST(gc_min_sleep_time),
1309 ATTR_LIST(gc_max_sleep_time),
1310 ATTR_LIST(gc_no_gc_sleep_time),
1311 ATTR_LIST(gc_no_zoned_gc_percent),
1312 ATTR_LIST(gc_boost_zoned_gc_percent),
1313 ATTR_LIST(gc_valid_thresh_ratio),
1314 ATTR_LIST(gc_boost_gc_multiple),
1315 ATTR_LIST(gc_boost_gc_greedy),
1316 ATTR_LIST(gc_idle),
1317 ATTR_LIST(gc_urgent),
1318 ATTR_LIST(reclaim_segments),
1319 ATTR_LIST(main_blkaddr),
1320 ATTR_LIST(max_small_discards),
1321 ATTR_LIST(max_discard_request),
1322 ATTR_LIST(min_discard_issue_time),
1323 ATTR_LIST(mid_discard_issue_time),
1324 ATTR_LIST(max_discard_issue_time),
1325 ATTR_LIST(discard_io_aware_gran),
1326 ATTR_LIST(discard_urgent_util),
1327 ATTR_LIST(discard_granularity),
1328 ATTR_LIST(max_ordered_discard),
1329 ATTR_LIST(discard_io_aware),
1330 ATTR_LIST(pending_discard),
1331 ATTR_LIST(gc_mode),
1332 ATTR_LIST(ipu_policy),
1333 ATTR_LIST(min_ipu_util),
1334 ATTR_LIST(min_fsync_blocks),
1335 ATTR_LIST(min_seq_blocks),
1336 ATTR_LIST(min_hot_blocks),
1337 ATTR_LIST(min_ssr_sections),
1338 ATTR_LIST(reserved_segments),
1339 ATTR_LIST(max_victim_search),
1340 ATTR_LIST(migration_granularity),
1341 ATTR_LIST(migration_window_granularity),
1342 ATTR_LIST(dir_level),
1343 ATTR_LIST(ram_thresh),
1344 ATTR_LIST(ra_nid_pages),
1345 ATTR_LIST(dirty_nats_ratio),
1346 ATTR_LIST(max_roll_forward_node_blocks),
1347 ATTR_LIST(cp_interval),
1348 ATTR_LIST(idle_interval),
1349 ATTR_LIST(discard_idle_interval),
1350 ATTR_LIST(gc_idle_interval),
1351 ATTR_LIST(umount_discard_timeout),
1352 ATTR_LIST(bggc_io_aware),
1353#ifdef CONFIG_F2FS_IOSTAT
1354 ATTR_LIST(iostat_enable),
1355 ATTR_LIST(iostat_period_ms),
1356#endif
1357 ATTR_LIST(readdir_ra),
1358 ATTR_LIST(max_io_bytes),
1359 ATTR_LIST(gc_pin_file_thresh),
1360 ATTR_LIST(extension_list),
1361#ifdef CONFIG_F2FS_FAULT_INJECTION
1362 ATTR_LIST(inject_rate),
1363 ATTR_LIST(inject_type),
1364#endif
1365 ATTR_LIST(data_io_flag),
1366 ATTR_LIST(node_io_flag),
1367 ATTR_LIST(gc_remaining_trials),
1368 ATTR_LIST(ckpt_thread_ioprio),
1369 ATTR_LIST(dirty_segments),
1370 ATTR_LIST(free_segments),
1371 ATTR_LIST(ovp_segments),
1372 ATTR_LIST(unusable),
1373 ATTR_LIST(lifetime_write_kbytes),
1374 ATTR_LIST(features),
1375 ATTR_LIST(reserved_blocks),
1376 ATTR_LIST(current_reserved_blocks),
1377 ATTR_LIST(encoding),
1378 ATTR_LIST(encoding_flags),
1379 ATTR_LIST(effective_lookup_mode),
1380 ATTR_LIST(mounted_time_sec),
1381#ifdef CONFIG_F2FS_STAT_FS
1382 ATTR_LIST(cp_foreground_calls),
1383 ATTR_LIST(cp_background_calls),
1384 ATTR_LIST(gc_foreground_calls),
1385 ATTR_LIST(gc_background_calls),
1386 ATTR_LIST(moved_blocks_foreground),
1387 ATTR_LIST(moved_blocks_background),
1388 ATTR_LIST(avg_vblocks),
1389#endif
1390#ifdef CONFIG_BLK_DEV_ZONED
1391 ATTR_LIST(unusable_blocks_per_sec),
1392 ATTR_LIST(max_open_zones),
1393 ATTR_LIST(blkzone_alloc_policy),
1394#endif
1395#ifdef CONFIG_F2FS_FS_COMPRESSION
1396 ATTR_LIST(compr_written_block),
1397 ATTR_LIST(compr_saved_block),
1398 ATTR_LIST(compr_new_inode),
1399 ATTR_LIST(compress_percent),
1400 ATTR_LIST(compress_watermark),
1401#endif
1402 /* For ATGC */
1403 ATTR_LIST(atgc_candidate_ratio),
1404 ATTR_LIST(atgc_candidate_count),
1405 ATTR_LIST(atgc_age_weight),
1406 ATTR_LIST(atgc_age_threshold),
1407 ATTR_LIST(atgc_enabled),
1408 ATTR_LIST(seq_file_ra_mul),
1409 ATTR_LIST(gc_segment_mode),
1410 ATTR_LIST(gc_reclaimed_segments),
1411 ATTR_LIST(max_fragment_chunk),
1412 ATTR_LIST(max_fragment_hole),
1413 ATTR_LIST(current_atomic_write),
1414 ATTR_LIST(peak_atomic_write),
1415 ATTR_LIST(committed_atomic_block),
1416 ATTR_LIST(revoked_atomic_block),
1417 ATTR_LIST(hot_data_age_threshold),
1418 ATTR_LIST(warm_data_age_threshold),
1419 ATTR_LIST(last_age_weight),
1420 ATTR_LIST(max_read_extent_count),
1421 ATTR_LIST(carve_out),
1422 ATTR_LIST(reserved_pin_section),
1423 ATTR_LIST(allocate_section_hint),
1424 ATTR_LIST(allocate_section_policy),
1425 NULL,
1426};
1427ATTRIBUTE_GROUPS(f2fs);
1428
1429#define BASE_ATTR_LIST(name) (&f2fs_base_attr_##name.attr)
1430static struct attribute *f2fs_feat_attrs[] = {
1431#ifdef CONFIG_FS_ENCRYPTION
1432 BASE_ATTR_LIST(encryption),
1433 BASE_ATTR_LIST(test_dummy_encryption_v2),
1434#if IS_ENABLED(CONFIG_UNICODE)
1435 BASE_ATTR_LIST(encrypted_casefold),
1436#endif
1437#endif /* CONFIG_FS_ENCRYPTION */
1438#ifdef CONFIG_BLK_DEV_ZONED
1439 BASE_ATTR_LIST(block_zoned),
1440#endif
1441 BASE_ATTR_LIST(atomic_write),
1442 BASE_ATTR_LIST(extra_attr),
1443 BASE_ATTR_LIST(project_quota),
1444 BASE_ATTR_LIST(inode_checksum),
1445 BASE_ATTR_LIST(flexible_inline_xattr),
1446 BASE_ATTR_LIST(quota_ino),
1447 BASE_ATTR_LIST(inode_crtime),
1448 BASE_ATTR_LIST(lost_found),
1449#ifdef CONFIG_FS_VERITY
1450 BASE_ATTR_LIST(verity),
1451#endif
1452 BASE_ATTR_LIST(sb_checksum),
1453#if IS_ENABLED(CONFIG_UNICODE)
1454 BASE_ATTR_LIST(casefold),
1455#endif
1456 BASE_ATTR_LIST(readonly),
1457#ifdef CONFIG_F2FS_FS_COMPRESSION
1458 BASE_ATTR_LIST(compression),
1459#endif
1460 BASE_ATTR_LIST(pin_file),
1461#ifdef CONFIG_UNICODE
1462 BASE_ATTR_LIST(linear_lookup),
1463#endif
1464 BASE_ATTR_LIST(packed_ssa),
1465 NULL,
1466};
1467ATTRIBUTE_GROUPS(f2fs_feat);
1468
1469F2FS_GENERAL_RO_ATTR(sb_status);
1470F2FS_GENERAL_RO_ATTR(cp_status);
1471F2FS_GENERAL_RO_ATTR(issued_discard);
1472F2FS_GENERAL_RO_ATTR(queued_discard);
1473F2FS_GENERAL_RO_ATTR(undiscard_blks);
1474
1475static struct attribute *f2fs_stat_attrs[] = {
1476 ATTR_LIST(sb_status),
1477 ATTR_LIST(cp_status),
1478 ATTR_LIST(issued_discard),
1479 ATTR_LIST(queued_discard),
1480 ATTR_LIST(undiscard_blks),
1481 NULL,
1482};
1483ATTRIBUTE_GROUPS(f2fs_stat);
1484
1485F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1486F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1487F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1488F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1489F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1490F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1491F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1492F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1493F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1494F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1495F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1496F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1497F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1498F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1499F2FS_SB_FEATURE_RO_ATTR(device_alias, DEVICE_ALIAS);
1500F2FS_SB_FEATURE_RO_ATTR(packed_ssa, PACKED_SSA);
1501
1502static struct attribute *f2fs_sb_feat_attrs[] = {
1503 ATTR_LIST(sb_encryption),
1504 ATTR_LIST(sb_block_zoned),
1505 ATTR_LIST(sb_extra_attr),
1506 ATTR_LIST(sb_project_quota),
1507 ATTR_LIST(sb_inode_checksum),
1508 ATTR_LIST(sb_flexible_inline_xattr),
1509 ATTR_LIST(sb_quota_ino),
1510 ATTR_LIST(sb_inode_crtime),
1511 ATTR_LIST(sb_lost_found),
1512 ATTR_LIST(sb_verity),
1513 ATTR_LIST(sb_sb_checksum),
1514 ATTR_LIST(sb_casefold),
1515 ATTR_LIST(sb_compression),
1516 ATTR_LIST(sb_readonly),
1517 ATTR_LIST(sb_device_alias),
1518 ATTR_LIST(sb_packed_ssa),
1519 NULL,
1520};
1521ATTRIBUTE_GROUPS(f2fs_sb_feat);
1522
1523F2FS_TUNE_RW_ATTR(reclaim_caches_kb);
1524
1525static struct attribute *f2fs_tune_attrs[] = {
1526 BASE_ATTR_LIST(reclaim_caches_kb),
1527 NULL,
1528};
1529ATTRIBUTE_GROUPS(f2fs_tune);
1530
1531static const struct sysfs_ops f2fs_attr_ops = {
1532 .show = f2fs_attr_show,
1533 .store = f2fs_attr_store,
1534};
1535
1536static const struct kobj_type f2fs_sb_ktype = {
1537 .default_groups = f2fs_groups,
1538 .sysfs_ops = &f2fs_attr_ops,
1539 .release = f2fs_sb_release,
1540};
1541
1542static const struct kobj_type f2fs_ktype = {
1543 .sysfs_ops = &f2fs_attr_ops,
1544};
1545
1546static struct kset f2fs_kset = {
1547 .kobj = {.ktype = &f2fs_ktype},
1548};
1549
1550static const struct sysfs_ops f2fs_feat_attr_ops = {
1551 .show = f2fs_base_attr_show,
1552 .store = f2fs_base_attr_store,
1553};
1554
1555static const struct kobj_type f2fs_feat_ktype = {
1556 .default_groups = f2fs_feat_groups,
1557 .sysfs_ops = &f2fs_feat_attr_ops,
1558};
1559
1560static struct kobject f2fs_feat = {
1561 .kset = &f2fs_kset,
1562};
1563
1564static const struct sysfs_ops f2fs_tune_attr_ops = {
1565 .show = f2fs_base_attr_show,
1566 .store = f2fs_base_attr_store,
1567};
1568
1569static const struct kobj_type f2fs_tune_ktype = {
1570 .default_groups = f2fs_tune_groups,
1571 .sysfs_ops = &f2fs_tune_attr_ops,
1572};
1573
1574static struct kobject f2fs_tune = {
1575 .kset = &f2fs_kset,
1576};
1577
1578static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
1579 struct attribute *attr, char *buf)
1580{
1581 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1582 s_stat_kobj);
1583 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1584
1585 return a->show ? a->show(a, sbi, buf) : 0;
1586}
1587
1588static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
1589 const char *buf, size_t len)
1590{
1591 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1592 s_stat_kobj);
1593 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1594
1595 return a->store ? a->store(a, sbi, buf, len) : 0;
1596}
1597
1598static void f2fs_stat_kobj_release(struct kobject *kobj)
1599{
1600 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1601 s_stat_kobj);
1602 complete(&sbi->s_stat_kobj_unregister);
1603}
1604
1605static const struct sysfs_ops f2fs_stat_attr_ops = {
1606 .show = f2fs_stat_attr_show,
1607 .store = f2fs_stat_attr_store,
1608};
1609
1610static const struct kobj_type f2fs_stat_ktype = {
1611 .default_groups = f2fs_stat_groups,
1612 .sysfs_ops = &f2fs_stat_attr_ops,
1613 .release = f2fs_stat_kobj_release,
1614};
1615
1616static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
1617 struct attribute *attr, char *buf)
1618{
1619 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1620 s_feature_list_kobj);
1621 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1622
1623 return a->show ? a->show(a, sbi, buf) : 0;
1624}
1625
1626static void f2fs_feature_list_kobj_release(struct kobject *kobj)
1627{
1628 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1629 s_feature_list_kobj);
1630 complete(&sbi->s_feature_list_kobj_unregister);
1631}
1632
1633static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1634 .show = f2fs_sb_feat_attr_show,
1635};
1636
1637static const struct kobj_type f2fs_feature_list_ktype = {
1638 .default_groups = f2fs_sb_feat_groups,
1639 .sysfs_ops = &f2fs_feature_list_attr_ops,
1640 .release = f2fs_feature_list_kobj_release,
1641};
1642
1643static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
1644 void *offset)
1645{
1646 struct super_block *sb = seq->private;
1647 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1648 unsigned int total_segs =
1649 le32_to_cpu(sbi->raw_super->segment_count_main);
1650 int i;
1651
1652 seq_puts(m: seq, s: "format: segment_type|valid_blocks\n"
1653 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1654
1655 for (i = 0; i < total_segs; i++) {
1656 struct seg_entry *se = get_seg_entry(sbi, segno: i);
1657
1658 if ((i % 10) == 0)
1659 seq_printf(m: seq, fmt: "%-10d", i);
1660 seq_printf(m: seq, fmt: "%d|%-3u", se->type, se->valid_blocks);
1661 if ((i % 10) == 9 || i == (total_segs - 1))
1662 seq_putc(m: seq, c: '\n');
1663 else
1664 seq_putc(m: seq, c: ' ');
1665 }
1666
1667 return 0;
1668}
1669
1670static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
1671 void *offset)
1672{
1673 struct super_block *sb = seq->private;
1674 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1675 unsigned int total_segs =
1676 le32_to_cpu(sbi->raw_super->segment_count_main);
1677 int i, j;
1678
1679 seq_puts(m: seq, s: "format: segment_type|valid_blocks|bitmaps|mtime\n"
1680 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1681
1682 for (i = 0; i < total_segs; i++) {
1683 struct seg_entry *se = get_seg_entry(sbi, segno: i);
1684
1685 seq_printf(m: seq, fmt: "%-10d", i);
1686 seq_printf(m: seq, fmt: "%d|%-3u|", se->type, se->valid_blocks);
1687 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
1688 seq_printf(m: seq, fmt: " %.2x", se->cur_valid_map[j]);
1689 seq_printf(m: seq, fmt: "| %llx", se->mtime);
1690 seq_putc(m: seq, c: '\n');
1691 }
1692 return 0;
1693}
1694
1695static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
1696 void *offset)
1697{
1698 struct super_block *sb = seq->private;
1699 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1700 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1701 int i;
1702
1703 seq_puts(m: seq, s: "format: victim_secmap bitmaps\n");
1704
1705 for (i = 0; i < MAIN_SECS(sbi); i++) {
1706 if ((i % 10) == 0)
1707 seq_printf(m: seq, fmt: "%-10d", i);
1708 seq_printf(m: seq, fmt: "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
1709 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
1710 seq_putc(m: seq, c: '\n');
1711 else
1712 seq_putc(m: seq, c: ' ');
1713 }
1714 return 0;
1715}
1716
1717static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
1718 void *offset)
1719{
1720 struct super_block *sb = seq->private;
1721 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1722 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1723 int i, count;
1724
1725 seq_puts(m: seq, s: "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n");
1726 if (!f2fs_realtime_discard_enable(sbi))
1727 return 0;
1728
1729 if (dcc) {
1730 mutex_lock(&dcc->cmd_lock);
1731 for (i = 0; i < MAX_PLIST_NUM; i++) {
1732 struct list_head *pend_list;
1733 struct discard_cmd *dc, *tmp;
1734
1735 if (i % 8 == 0)
1736 seq_printf(m: seq, fmt: " %-3d", i);
1737 count = 0;
1738 pend_list = &dcc->pend_list[i];
1739 list_for_each_entry_safe(dc, tmp, pend_list, list)
1740 count++;
1741 if (count)
1742 seq_printf(m: seq, fmt: " %7d", count);
1743 else
1744 seq_puts(m: seq, s: " .");
1745 if (i % 8 == 7)
1746 seq_putc(m: seq, c: '\n');
1747 }
1748 seq_putc(m: seq, c: '\n');
1749 mutex_unlock(lock: &dcc->cmd_lock);
1750 }
1751
1752 return 0;
1753}
1754
1755static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
1756 void *offset)
1757{
1758 struct super_block *sb = seq->private;
1759 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1760 int i;
1761
1762 seq_printf(m: seq, fmt: "Address Layout : %5luB Block address (# of Segments)\n",
1763 F2FS_BLKSIZE);
1764 seq_printf(m: seq, fmt: " SB : %12s\n", "0/1024B");
1765 seq_printf(m: seq, fmt: " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi));
1766 seq_printf(m: seq, fmt: " Checkpoint : 0x%010x (%10d)\n",
1767 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2);
1768 seq_printf(m: seq, fmt: " SIT : 0x%010x (%10d)\n",
1769 SIT_I(sbi)->sit_base_addr,
1770 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit));
1771 seq_printf(m: seq, fmt: " NAT : 0x%010x (%10d)\n",
1772 NM_I(sbi)->nat_blkaddr,
1773 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat));
1774 seq_printf(m: seq, fmt: " SSA : 0x%010x (%10d)\n",
1775 SM_I(sbi)->ssa_blkaddr,
1776 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa));
1777 seq_printf(m: seq, fmt: " Main : 0x%010x (%10d)\n",
1778 SM_I(sbi)->main_blkaddr,
1779 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
1780 seq_printf(m: seq, fmt: " Block size : %12lu KB\n", F2FS_BLKSIZE >> 10);
1781 seq_printf(m: seq, fmt: " Segment size : %12d MB\n",
1782 (BLKS_PER_SEG(sbi) << (F2FS_BLKSIZE_BITS - 10)) >> 10);
1783 seq_printf(m: seq, fmt: " Segs/Sections : %12d\n",
1784 SEGS_PER_SEC(sbi));
1785 seq_printf(m: seq, fmt: " Section size : %12d MB\n",
1786 (BLKS_PER_SEC(sbi) << (F2FS_BLKSIZE_BITS - 10)) >> 10);
1787 seq_printf(m: seq, fmt: " # of Sections : %12d\n",
1788 le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
1789
1790 if (!f2fs_is_multi_device(sbi))
1791 return 0;
1792
1793 seq_puts(m: seq, s: "\nDisk Map for multi devices:\n");
1794 for (i = 0; i < sbi->s_ndevs; i++)
1795 seq_printf(m: seq, fmt: "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n",
1796 i, bdev_is_zoned(FDEV(i).bdev),
1797 FDEV(i).start_blk, FDEV(i).end_blk,
1798 FDEV(i).path);
1799 return 0;
1800}
1801
1802static int __maybe_unused donation_list_seq_show(struct seq_file *seq,
1803 void *offset)
1804{
1805 struct super_block *sb = seq->private;
1806 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1807 struct inode *inode;
1808 struct f2fs_inode_info *fi;
1809 struct dentry *dentry;
1810 char *buf, *path;
1811 int i;
1812
1813 buf = f2fs_getname(sbi);
1814 if (!buf)
1815 return 0;
1816
1817 seq_printf(m: seq, fmt: "Donation List\n");
1818 seq_printf(m: seq, fmt: " # of files : %u\n", sbi->donate_files);
1819 seq_printf(m: seq, fmt: " %-50s %10s %20s %20s %22s\n",
1820 "File path", "Status", "Donation offset (kb)",
1821 "Donation size (kb)", "File cached size (kb)");
1822 seq_printf(m: seq, fmt: "---\n");
1823
1824 for (i = 0; i < sbi->donate_files; i++) {
1825 spin_lock(lock: &sbi->inode_lock[DONATE_INODE]);
1826 if (list_empty(head: &sbi->inode_list[DONATE_INODE])) {
1827 spin_unlock(lock: &sbi->inode_lock[DONATE_INODE]);
1828 break;
1829 }
1830 fi = list_first_entry(&sbi->inode_list[DONATE_INODE],
1831 struct f2fs_inode_info, gdonate_list);
1832 list_move_tail(list: &fi->gdonate_list, head: &sbi->inode_list[DONATE_INODE]);
1833 inode = igrab(&fi->vfs_inode);
1834 spin_unlock(lock: &sbi->inode_lock[DONATE_INODE]);
1835
1836 if (!inode)
1837 continue;
1838
1839 inode_lock_shared(inode);
1840
1841 dentry = d_find_alias(inode);
1842 if (!dentry) {
1843 path = NULL;
1844 } else {
1845 path = dentry_path_raw(dentry, buf, PATH_MAX);
1846 if (IS_ERR(ptr: path))
1847 goto next;
1848 }
1849 seq_printf(m: seq, fmt: " %-50s %10s %20llu %20llu %22llu\n",
1850 path ? path : "<unlinked>",
1851 is_inode_flag_set(inode, flag: FI_DONATE_FINISHED) ?
1852 "Evicted" : "Donated",
1853 (loff_t)fi->donate_start << (PAGE_SHIFT - 10),
1854 (loff_t)(fi->donate_end + 1) << (PAGE_SHIFT - 10),
1855 (loff_t)inode->i_mapping->nrpages << (PAGE_SHIFT - 10));
1856next:
1857 dput(dentry);
1858 inode_unlock_shared(inode);
1859 iput(inode);
1860 }
1861 f2fs_putname(buf);
1862 return 0;
1863}
1864
1865#ifdef CONFIG_F2FS_FAULT_INJECTION
1866static int __maybe_unused inject_stats_seq_show(struct seq_file *seq,
1867 void *offset)
1868{
1869 struct super_block *sb = seq->private;
1870 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1871 struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1872 int i;
1873
1874 seq_puts(m: seq, s: "fault_type injected_count\n");
1875
1876 for (i = 0; i < FAULT_MAX; i++)
1877 seq_printf(m: seq, fmt: "%-24s%-10u\n", f2fs_fault_name[i],
1878 ffi->inject_count[i]);
1879 return 0;
1880}
1881#endif
1882
1883int __init f2fs_init_sysfs(void)
1884{
1885 int ret;
1886
1887 kobject_set_name(kobj: &f2fs_kset.kobj, name: "f2fs");
1888 f2fs_kset.kobj.parent = fs_kobj;
1889 ret = kset_register(kset: &f2fs_kset);
1890 if (ret)
1891 return ret;
1892
1893 ret = kobject_init_and_add(kobj: &f2fs_feat, ktype: &f2fs_feat_ktype,
1894 NULL, fmt: "features");
1895 if (ret)
1896 goto put_kobject;
1897
1898 ret = kobject_init_and_add(kobj: &f2fs_tune, ktype: &f2fs_tune_ktype,
1899 NULL, fmt: "tuning");
1900 if (ret)
1901 goto put_kobject;
1902
1903 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
1904 if (!f2fs_proc_root) {
1905 ret = -ENOMEM;
1906 goto put_kobject;
1907 }
1908
1909 return 0;
1910
1911put_kobject:
1912 kobject_put(kobj: &f2fs_tune);
1913 kobject_put(kobj: &f2fs_feat);
1914 kset_unregister(kset: &f2fs_kset);
1915 return ret;
1916}
1917
1918void f2fs_exit_sysfs(void)
1919{
1920 kobject_put(kobj: &f2fs_tune);
1921 kobject_put(kobj: &f2fs_feat);
1922 kset_unregister(kset: &f2fs_kset);
1923 remove_proc_entry("fs/f2fs", NULL);
1924 f2fs_proc_root = NULL;
1925}
1926
1927int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
1928{
1929 struct super_block *sb = sbi->sb;
1930 int err;
1931
1932 sbi->s_kobj.kset = &f2fs_kset;
1933 init_completion(x: &sbi->s_kobj_unregister);
1934 err = kobject_init_and_add(kobj: &sbi->s_kobj, ktype: &f2fs_sb_ktype, NULL,
1935 fmt: "%s", sb->s_id);
1936 if (err)
1937 goto put_sb_kobj;
1938
1939 sbi->s_stat_kobj.kset = &f2fs_kset;
1940 init_completion(x: &sbi->s_stat_kobj_unregister);
1941 err = kobject_init_and_add(kobj: &sbi->s_stat_kobj, ktype: &f2fs_stat_ktype,
1942 parent: &sbi->s_kobj, fmt: "stat");
1943 if (err)
1944 goto put_stat_kobj;
1945
1946 sbi->s_feature_list_kobj.kset = &f2fs_kset;
1947 init_completion(x: &sbi->s_feature_list_kobj_unregister);
1948 err = kobject_init_and_add(kobj: &sbi->s_feature_list_kobj,
1949 ktype: &f2fs_feature_list_ktype,
1950 parent: &sbi->s_kobj, fmt: "feature_list");
1951 if (err)
1952 goto put_feature_list_kobj;
1953
1954 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
1955 if (!sbi->s_proc) {
1956 err = -ENOMEM;
1957 goto put_feature_list_kobj;
1958 }
1959
1960 proc_create_single_data(name: "segment_info", mode: 0444, parent: sbi->s_proc,
1961 show: segment_info_seq_show, data: sb);
1962 proc_create_single_data(name: "segment_bits", mode: 0444, parent: sbi->s_proc,
1963 show: segment_bits_seq_show, data: sb);
1964#ifdef CONFIG_F2FS_IOSTAT
1965 proc_create_single_data(name: "iostat_info", mode: 0444, parent: sbi->s_proc,
1966 show: iostat_info_seq_show, data: sb);
1967#endif
1968 proc_create_single_data(name: "victim_bits", mode: 0444, parent: sbi->s_proc,
1969 show: victim_bits_seq_show, data: sb);
1970 proc_create_single_data(name: "discard_plist_info", mode: 0444, parent: sbi->s_proc,
1971 show: discard_plist_seq_show, data: sb);
1972 proc_create_single_data(name: "disk_map", mode: 0444, parent: sbi->s_proc,
1973 show: disk_map_seq_show, data: sb);
1974 proc_create_single_data(name: "donation_list", mode: 0444, parent: sbi->s_proc,
1975 show: donation_list_seq_show, data: sb);
1976#ifdef CONFIG_F2FS_FAULT_INJECTION
1977 proc_create_single_data(name: "inject_stats", mode: 0444, parent: sbi->s_proc,
1978 show: inject_stats_seq_show, data: sb);
1979#endif
1980 return 0;
1981put_feature_list_kobj:
1982 kobject_put(kobj: &sbi->s_feature_list_kobj);
1983 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1984put_stat_kobj:
1985 kobject_put(kobj: &sbi->s_stat_kobj);
1986 wait_for_completion(&sbi->s_stat_kobj_unregister);
1987put_sb_kobj:
1988 kobject_put(kobj: &sbi->s_kobj);
1989 wait_for_completion(&sbi->s_kobj_unregister);
1990 return err;
1991}
1992
1993void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
1994{
1995 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root);
1996
1997 kobject_put(kobj: &sbi->s_stat_kobj);
1998 wait_for_completion(&sbi->s_stat_kobj_unregister);
1999 kobject_put(kobj: &sbi->s_feature_list_kobj);
2000 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
2001
2002 kobject_put(kobj: &sbi->s_kobj);
2003 wait_for_completion(&sbi->s_kobj_unregister);
2004}
2005

source code of linux/fs/f2fs/sysfs.c