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accel/qaic: Add AIC200 support
[drm/drm-misc.git] / fs / f2fs / sysfs.c
blob6b99dc49f7761a6b8ec2ecfb05d607e9d436cd45
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * f2fs sysfs interface
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 * Copyright (c) 2017 Chao Yu <chao@kernel.org>
8 */
9 #include <linux/compiler.h>
10 #include <linux/proc_fs.h>
11 #include <linux/f2fs_fs.h>
12 #include <linux/seq_file.h>
13 #include <linux/unicode.h>
14 #include <linux/ioprio.h>
15 #include <linux/sysfs.h>
16
17 #include "f2fs.h"
18 #include "segment.h"
19 #include "gc.h"
20 #include "iostat.h"
21 #include <trace/events/f2fs.h>
22
23 static struct proc_dir_entry *f2fs_proc_root;
24
25 /* Sysfs support for f2fs */
26 enum {
27 GC_THREAD, /* struct f2fs_gc_thread */
28 SM_INFO, /* struct f2fs_sm_info */
29 DCC_INFO, /* struct discard_cmd_control */
30 NM_INFO, /* struct f2fs_nm_info */
31 F2FS_SBI, /* struct f2fs_sb_info */
32 #ifdef CONFIG_F2FS_STAT_FS
33 STAT_INFO, /* struct f2fs_stat_info */
34 #endif
35 #ifdef CONFIG_F2FS_FAULT_INJECTION
36 FAULT_INFO_RATE, /* struct f2fs_fault_info */
37 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
38 #endif
39 RESERVED_BLOCKS, /* struct f2fs_sb_info */
40 CPRC_INFO, /* struct ckpt_req_control */
41 ATGC_INFO, /* struct atgc_management */
42 };
43
44 static const char *gc_mode_names[MAX_GC_MODE] = {
45 "GC_NORMAL",
46 "GC_IDLE_CB",
47 "GC_IDLE_GREEDY",
48 "GC_IDLE_AT",
49 "GC_URGENT_HIGH",
50 "GC_URGENT_LOW",
51 "GC_URGENT_MID"
52 };
53
54 struct f2fs_attr {
55 struct attribute attr;
56 ssize_t (*show)(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf);
57 ssize_t (*store)(struct f2fs_attr *a, struct f2fs_sb_info *sbi,
58 const char *buf, size_t len);
59 int struct_type;
60 int offset;
61 int id;
62 };
63
64 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
65 struct f2fs_sb_info *sbi, char *buf);
66
67 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
68 {
69 if (struct_type == GC_THREAD)
70 return (unsigned char *)sbi->gc_thread;
71 else if (struct_type == SM_INFO)
72 return (unsigned char *)SM_I(sbi);
73 else if (struct_type == DCC_INFO)
74 return (unsigned char *)SM_I(sbi)->dcc_info;
75 else if (struct_type == NM_INFO)
76 return (unsigned char *)NM_I(sbi);
77 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
78 return (unsigned char *)sbi;
79 #ifdef CONFIG_F2FS_FAULT_INJECTION
80 else if (struct_type == FAULT_INFO_RATE ||
81 struct_type == FAULT_INFO_TYPE)
82 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
83 #endif
84 #ifdef CONFIG_F2FS_STAT_FS
85 else if (struct_type == STAT_INFO)
86 return (unsigned char *)F2FS_STAT(sbi);
87 #endif
88 else if (struct_type == CPRC_INFO)
89 return (unsigned char *)&sbi->cprc_info;
90 else if (struct_type == ATGC_INFO)
91 return (unsigned char *)&sbi->am;
92 return NULL;
93 }
94
95 static ssize_t dirty_segments_show(struct f2fs_attr *a,
96 struct f2fs_sb_info *sbi, char *buf)
97 {
98 return sysfs_emit(buf, "%llu\n",
99 (unsigned long long)(dirty_segments(sbi)));
100 }
101
102 static ssize_t free_segments_show(struct f2fs_attr *a,
103 struct f2fs_sb_info *sbi, char *buf)
104 {
105 return sysfs_emit(buf, "%llu\n",
106 (unsigned long long)(free_segments(sbi)));
107 }
108
109 static ssize_t ovp_segments_show(struct f2fs_attr *a,
110 struct f2fs_sb_info *sbi, char *buf)
111 {
112 return sysfs_emit(buf, "%llu\n",
113 (unsigned long long)(overprovision_segments(sbi)));
114 }
115
116 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
117 struct f2fs_sb_info *sbi, char *buf)
118 {
119 return sysfs_emit(buf, "%llu\n",
120 (unsigned long long)(sbi->kbytes_written +
121 ((f2fs_get_sectors_written(sbi) -
122 sbi->sectors_written_start) >> 1)));
123 }
124
125 static ssize_t sb_status_show(struct f2fs_attr *a,
126 struct f2fs_sb_info *sbi, char *buf)
127 {
128 return sysfs_emit(buf, "%lx\n", sbi->s_flag);
129 }
130
131 static ssize_t cp_status_show(struct f2fs_attr *a,
132 struct f2fs_sb_info *sbi, char *buf)
133 {
134 return sysfs_emit(buf, "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags));
135 }
136
137 static ssize_t pending_discard_show(struct f2fs_attr *a,
138 struct f2fs_sb_info *sbi, char *buf)
139 {
140 if (!SM_I(sbi)->dcc_info)
141 return -EINVAL;
142 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
143 &SM_I(sbi)->dcc_info->discard_cmd_cnt));
144 }
145
146 static ssize_t issued_discard_show(struct f2fs_attr *a,
147 struct f2fs_sb_info *sbi, char *buf)
148 {
149 if (!SM_I(sbi)->dcc_info)
150 return -EINVAL;
151 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
152 &SM_I(sbi)->dcc_info->issued_discard));
153 }
154
155 static ssize_t queued_discard_show(struct f2fs_attr *a,
156 struct f2fs_sb_info *sbi, char *buf)
157 {
158 if (!SM_I(sbi)->dcc_info)
159 return -EINVAL;
160 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
161 &SM_I(sbi)->dcc_info->queued_discard));
162 }
163
164 static ssize_t undiscard_blks_show(struct f2fs_attr *a,
165 struct f2fs_sb_info *sbi, char *buf)
166 {
167 if (!SM_I(sbi)->dcc_info)
168 return -EINVAL;
169 return sysfs_emit(buf, "%u\n",
170 SM_I(sbi)->dcc_info->undiscard_blks);
171 }
172
173 static ssize_t 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
179 static 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
185 static 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
238 static 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
244 static 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
256 static 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
271 static 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
278 static 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
288 static 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
297 static 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
308 static 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
315 static 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
404 static 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);
447 out:
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
819 static 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
838 static 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
848 static 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
858 static 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 */
883 static 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) \
890 static struct f2fs_attr f2fs_attr_##_name = { \
891 .attr = {.name = __stringify(_name), .mode = 0444 }, \
892 .show = f2fs_feature_show, \
893 }
894
895 static 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) \
904 static 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) \
911 static 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) \
930 static 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 */
982 GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
983 GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
984 GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
985 GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
986 GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent);
987 GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent);
988 GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio);
989
990 /* SM_INFO ATTR */
991 SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
992 SM_INFO_GENERAL_RW_ATTR(ipu_policy);
993 SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
994 SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
995 SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
996 SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
997 SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
998 SM_INFO_GENERAL_RW_ATTR(reserved_segments);
999
1000 /* DCC_INFO ATTR */
1001 DCC_INFO_RW_ATTR(max_small_discards, max_discards);
1002 DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
1003 DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
1004 DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
1005 DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
1006 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
1007 DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
1008 DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
1009 DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
1010 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
1011
1012 /* NM_INFO ATTR */
1013 NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
1014 NM_INFO_GENERAL_RW_ATTR(ram_thresh);
1015 NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
1016 NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
1017
1018 /* F2FS_SBI ATTR */
1019 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
1020 F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
1021 F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
1022 F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
1023 F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
1024 F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
1025 F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
1026 F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
1027 F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
1028 F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
1029 F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
1030 F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
1031 F2FS_SBI_GENERAL_RW_ATTR(migration_window_granularity);
1032 F2FS_SBI_GENERAL_RW_ATTR(dir_level);
1033 #ifdef CONFIG_F2FS_IOSTAT
1034 F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
1035 F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
1036 #endif
1037 F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
1038 F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
1039 F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
1040 F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
1041 F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
1042 F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
1043 F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
1044 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
1045 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
1046 #ifdef CONFIG_F2FS_FS_COMPRESSION
1047 F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
1048 F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
1049 F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
1050 F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
1051 F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
1052 #endif
1053 /* atomic write */
1054 F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
1055 F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
1056 F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
1057 F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
1058 /* block age extent cache */
1059 F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
1060 F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
1061 F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
1062 /* read extent cache */
1063 F2FS_SBI_GENERAL_RW_ATTR(max_read_extent_count);
1064 #ifdef CONFIG_BLK_DEV_ZONED
1065 F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
1066 F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy);
1067 #endif
1068
1069 /* STAT_INFO ATTR */
1070 #ifdef CONFIG_F2FS_STAT_FS
1071 STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
1072 STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
1073 STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
1074 STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
1075 #endif
1076
1077 /* FAULT_INFO ATTR */
1078 #ifdef CONFIG_F2FS_FAULT_INJECTION
1079 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
1080 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
1081 #endif
1082
1083 /* RESERVED_BLOCKS ATTR */
1084 RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
1085
1086 /* CPRC_INFO ATTR */
1087 CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
1088
1089 /* ATGC_INFO ATTR */
1090 ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
1091 ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
1092 ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
1093 ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
1094
1095 F2FS_GENERAL_RO_ATTR(dirty_segments);
1096 F2FS_GENERAL_RO_ATTR(free_segments);
1097 F2FS_GENERAL_RO_ATTR(ovp_segments);
1098 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
1099 F2FS_GENERAL_RO_ATTR(features);
1100 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
1101 F2FS_GENERAL_RO_ATTR(unusable);
1102 F2FS_GENERAL_RO_ATTR(encoding);
1103 F2FS_GENERAL_RO_ATTR(mounted_time_sec);
1104 F2FS_GENERAL_RO_ATTR(main_blkaddr);
1105 F2FS_GENERAL_RO_ATTR(pending_discard);
1106 F2FS_GENERAL_RO_ATTR(atgc_enabled);
1107 F2FS_GENERAL_RO_ATTR(gc_mode);
1108 #ifdef CONFIG_F2FS_STAT_FS
1109 F2FS_GENERAL_RO_ATTR(moved_blocks_background);
1110 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
1111 F2FS_GENERAL_RO_ATTR(avg_vblocks);
1112 #endif
1113
1114 #ifdef CONFIG_FS_ENCRYPTION
1115 F2FS_FEATURE_RO_ATTR(encryption);
1116 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
1117 #if IS_ENABLED(CONFIG_UNICODE)
1118 F2FS_FEATURE_RO_ATTR(encrypted_casefold);
1119 #endif
1120 #endif /* CONFIG_FS_ENCRYPTION */
1121 #ifdef CONFIG_BLK_DEV_ZONED
1122 F2FS_FEATURE_RO_ATTR(block_zoned);
1123 #endif
1124 F2FS_FEATURE_RO_ATTR(atomic_write);
1125 F2FS_FEATURE_RO_ATTR(extra_attr);
1126 F2FS_FEATURE_RO_ATTR(project_quota);
1127 F2FS_FEATURE_RO_ATTR(inode_checksum);
1128 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
1129 F2FS_FEATURE_RO_ATTR(quota_ino);
1130 F2FS_FEATURE_RO_ATTR(inode_crtime);
1131 F2FS_FEATURE_RO_ATTR(lost_found);
1132 #ifdef CONFIG_FS_VERITY
1133 F2FS_FEATURE_RO_ATTR(verity);
1134 #endif
1135 F2FS_FEATURE_RO_ATTR(sb_checksum);
1136 #if IS_ENABLED(CONFIG_UNICODE)
1137 F2FS_FEATURE_RO_ATTR(casefold);
1138 #endif
1139 F2FS_FEATURE_RO_ATTR(readonly);
1140 #ifdef CONFIG_F2FS_FS_COMPRESSION
1141 F2FS_FEATURE_RO_ATTR(compression);
1142 #endif
1143 F2FS_FEATURE_RO_ATTR(pin_file);
1144
1145 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
1146 static 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 };
1257 ATTRIBUTE_GROUPS(f2fs);
1258
1259 static 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 };
1292 ATTRIBUTE_GROUPS(f2fs_feat);
1293
1294 F2FS_GENERAL_RO_ATTR(sb_status);
1295 F2FS_GENERAL_RO_ATTR(cp_status);
1296 F2FS_GENERAL_RO_ATTR(issued_discard);
1297 F2FS_GENERAL_RO_ATTR(queued_discard);
1298 F2FS_GENERAL_RO_ATTR(undiscard_blks);
1299
1300 static 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 };
1308 ATTRIBUTE_GROUPS(f2fs_stat);
1309
1310 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1311 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1312 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1313 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1314 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1315 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1316 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1317 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1318 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1319 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1320 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1321 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1322 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1323 F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1324 F2FS_SB_FEATURE_RO_ATTR(device_alias, DEVICE_ALIAS);
1325
1326 static 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 };
1344 ATTRIBUTE_GROUPS(f2fs_sb_feat);
1345
1346 static const struct sysfs_ops f2fs_attr_ops = {
1347 .show = f2fs_attr_show,
1348 .store = f2fs_attr_store,
1349 };
1350
1351 static 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
1357 static const struct kobj_type f2fs_ktype = {
1358 .sysfs_ops = &f2fs_attr_ops,
1359 };
1360
1361 static struct kset f2fs_kset = {
1362 .kobj = {.ktype = &f2fs_ktype},
1363 };
1364
1365 static const struct kobj_type f2fs_feat_ktype = {
1366 .default_groups = f2fs_feat_groups,
1367 .sysfs_ops = &f2fs_attr_ops,
1368 };
1369
1370 static struct kobject f2fs_feat = {
1371 .kset = &f2fs_kset,
1372 };
1373
1374 static 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
1384 static 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
1394 static 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
1401 static const struct sysfs_ops f2fs_stat_attr_ops = {
1402 .show = f2fs_stat_attr_show,
1403 .store = f2fs_stat_attr_store,
1404 };
1405
1406 static 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
1412 static 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
1422 static 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
1429 static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1430 .show = f2fs_sb_feat_attr_show,
1431 };
1432
1433 static 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
1439 static 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
1466 static 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
1490 static 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
1512 static 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
1550 static 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
1594 int __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;
1616 put_kobject:
1617 kobject_put(&f2fs_feat);
1618 kset_unregister(&f2fs_kset);
1619 return ret;
1620 }
1621
1622 void 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
1630 int 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;
1678 put_feature_list_kobj:
1679 kobject_put(&sbi->s_feature_list_kobj);
1680 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1681 put_stat_kobj:
1682 kobject_put(&sbi->s_stat_kobj);
1683 wait_for_completion(&sbi->s_stat_kobj_unregister);
1684 put_sb_kobj:
1685 kobject_put(&sbi->s_kobj);
1686 wait_for_completion(&sbi->s_kobj_unregister);
1687 return err;
1688 }
1689
1690 void 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 }
Kernel DRM miscellaneous fixes and cross-tree changes