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 *, struct f2fs_sb_info *, char *);
57 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
58 const char *, size_t);
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
__struct_ptr(struct f2fs_sb_info * sbi,int struct_type)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
dirty_segments_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)95 static ssize_t dirty_segments_show(struct f2fs_attr *a,
96 struct f2fs_sb_info *sbi, char *buf)
97 {
98 return sprintf(buf, "%llu\n",
99 (unsigned long long)(dirty_segments(sbi)));
100 }
101
free_segments_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)102 static ssize_t free_segments_show(struct f2fs_attr *a,
103 struct f2fs_sb_info *sbi, char *buf)
104 {
105 return sprintf(buf, "%llu\n",
106 (unsigned long long)(free_segments(sbi)));
107 }
108
ovp_segments_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)109 static ssize_t ovp_segments_show(struct f2fs_attr *a,
110 struct f2fs_sb_info *sbi, char *buf)
111 {
112 return sprintf(buf, "%llu\n",
113 (unsigned long long)(overprovision_segments(sbi)));
114 }
115
lifetime_write_kbytes_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)116 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
117 struct f2fs_sb_info *sbi, char *buf)
118 {
119 return sprintf(buf, "%llu\n",
120 (unsigned long long)(sbi->kbytes_written +
121 ((f2fs_get_sectors_written(sbi) -
122 sbi->sectors_written_start) >> 1)));
123 }
124
sb_status_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)125 static ssize_t sb_status_show(struct f2fs_attr *a,
126 struct f2fs_sb_info *sbi, char *buf)
127 {
128 return sprintf(buf, "%lx\n", sbi->s_flag);
129 }
130
cp_status_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)131 static ssize_t cp_status_show(struct f2fs_attr *a,
132 struct f2fs_sb_info *sbi, char *buf)
133 {
134 return sprintf(buf, "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags));
135 }
136
pending_discard_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)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 sprintf(buf, "%llu\n", (unsigned long long)atomic_read(
143 &SM_I(sbi)->dcc_info->discard_cmd_cnt));
144 }
145
features_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)146 static ssize_t features_show(struct f2fs_attr *a,
147 struct f2fs_sb_info *sbi, char *buf)
148 {
149 int len = 0;
150
151 if (f2fs_sb_has_encrypt(sbi))
152 len += scnprintf(buf, PAGE_SIZE - len, "%s",
153 "encryption");
154 if (f2fs_sb_has_blkzoned(sbi))
155 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
156 len ? ", " : "", "blkzoned");
157 if (f2fs_sb_has_extra_attr(sbi))
158 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
159 len ? ", " : "", "extra_attr");
160 if (f2fs_sb_has_project_quota(sbi))
161 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
162 len ? ", " : "", "projquota");
163 if (f2fs_sb_has_inode_chksum(sbi))
164 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
165 len ? ", " : "", "inode_checksum");
166 if (f2fs_sb_has_flexible_inline_xattr(sbi))
167 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
168 len ? ", " : "", "flexible_inline_xattr");
169 if (f2fs_sb_has_quota_ino(sbi))
170 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
171 len ? ", " : "", "quota_ino");
172 if (f2fs_sb_has_inode_crtime(sbi))
173 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
174 len ? ", " : "", "inode_crtime");
175 if (f2fs_sb_has_lost_found(sbi))
176 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
177 len ? ", " : "", "lost_found");
178 if (f2fs_sb_has_verity(sbi))
179 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
180 len ? ", " : "", "verity");
181 if (f2fs_sb_has_sb_chksum(sbi))
182 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
183 len ? ", " : "", "sb_checksum");
184 if (f2fs_sb_has_casefold(sbi))
185 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
186 len ? ", " : "", "casefold");
187 if (f2fs_sb_has_readonly(sbi))
188 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
189 len ? ", " : "", "readonly");
190 if (f2fs_sb_has_compression(sbi))
191 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
192 len ? ", " : "", "compression");
193 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
194 len ? ", " : "", "pin_file");
195 len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
196 return len;
197 }
198
current_reserved_blocks_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)199 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
200 struct f2fs_sb_info *sbi, char *buf)
201 {
202 return sprintf(buf, "%u\n", sbi->current_reserved_blocks);
203 }
204
unusable_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)205 static ssize_t unusable_show(struct f2fs_attr *a,
206 struct f2fs_sb_info *sbi, char *buf)
207 {
208 block_t unusable;
209
210 if (test_opt(sbi, DISABLE_CHECKPOINT))
211 unusable = sbi->unusable_block_count;
212 else
213 unusable = f2fs_get_unusable_blocks(sbi);
214 return sprintf(buf, "%llu\n", (unsigned long long)unusable);
215 }
216
encoding_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)217 static ssize_t encoding_show(struct f2fs_attr *a,
218 struct f2fs_sb_info *sbi, char *buf)
219 {
220 #if IS_ENABLED(CONFIG_UNICODE)
221 struct super_block *sb = sbi->sb;
222
223 if (f2fs_sb_has_casefold(sbi))
224 return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n",
225 (sb->s_encoding->version >> 16) & 0xff,
226 (sb->s_encoding->version >> 8) & 0xff,
227 sb->s_encoding->version & 0xff);
228 #endif
229 return sprintf(buf, "(none)");
230 }
231
mounted_time_sec_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)232 static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
233 struct f2fs_sb_info *sbi, char *buf)
234 {
235 return sprintf(buf, "%llu", SIT_I(sbi)->mounted_time);
236 }
237
238 #ifdef CONFIG_F2FS_STAT_FS
moved_blocks_foreground_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)239 static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
240 struct f2fs_sb_info *sbi, char *buf)
241 {
242 struct f2fs_stat_info *si = F2FS_STAT(sbi);
243
244 return sprintf(buf, "%llu\n",
245 (unsigned long long)(si->tot_blks -
246 (si->bg_data_blks + si->bg_node_blks)));
247 }
248
moved_blocks_background_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)249 static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
250 struct f2fs_sb_info *sbi, char *buf)
251 {
252 struct f2fs_stat_info *si = F2FS_STAT(sbi);
253
254 return sprintf(buf, "%llu\n",
255 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
256 }
257
avg_vblocks_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)258 static ssize_t avg_vblocks_show(struct f2fs_attr *a,
259 struct f2fs_sb_info *sbi, char *buf)
260 {
261 struct f2fs_stat_info *si = F2FS_STAT(sbi);
262
263 si->dirty_count = dirty_segments(sbi);
264 f2fs_update_sit_info(sbi);
265 return sprintf(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
266 }
267 #endif
268
main_blkaddr_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)269 static ssize_t main_blkaddr_show(struct f2fs_attr *a,
270 struct f2fs_sb_info *sbi, char *buf)
271 {
272 return sysfs_emit(buf, "%llu\n",
273 (unsigned long long)MAIN_BLKADDR(sbi));
274 }
275
f2fs_sbi_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)276 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
277 struct f2fs_sb_info *sbi, char *buf)
278 {
279 unsigned char *ptr = NULL;
280 unsigned int *ui;
281
282 ptr = __struct_ptr(sbi, a->struct_type);
283 if (!ptr)
284 return -EINVAL;
285
286 if (!strcmp(a->attr.name, "extension_list")) {
287 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
288 sbi->raw_super->extension_list;
289 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
290 int hot_count = sbi->raw_super->hot_ext_count;
291 int len = 0, i;
292
293 len += scnprintf(buf + len, PAGE_SIZE - len,
294 "cold file extension:\n");
295 for (i = 0; i < cold_count; i++)
296 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
297 extlist[i]);
298
299 len += scnprintf(buf + len, PAGE_SIZE - len,
300 "hot file extension:\n");
301 for (i = cold_count; i < cold_count + hot_count; i++)
302 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
303 extlist[i]);
304 return len;
305 }
306
307 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
308 struct ckpt_req_control *cprc = &sbi->cprc_info;
309 int len = 0;
310 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
311 int data = IOPRIO_PRIO_DATA(cprc->ckpt_thread_ioprio);
312
313 if (class == IOPRIO_CLASS_RT)
314 len += scnprintf(buf + len, PAGE_SIZE - len, "rt,");
315 else if (class == IOPRIO_CLASS_BE)
316 len += scnprintf(buf + len, PAGE_SIZE - len, "be,");
317 else
318 return -EINVAL;
319
320 len += scnprintf(buf + len, PAGE_SIZE - len, "%d\n", data);
321 return len;
322 }
323
324 #ifdef CONFIG_F2FS_FS_COMPRESSION
325 if (!strcmp(a->attr.name, "compr_written_block"))
326 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block);
327
328 if (!strcmp(a->attr.name, "compr_saved_block"))
329 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block);
330
331 if (!strcmp(a->attr.name, "compr_new_inode"))
332 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode);
333 #endif
334
335 if (!strcmp(a->attr.name, "gc_urgent"))
336 return sysfs_emit(buf, "%s\n",
337 gc_mode_names[sbi->gc_mode]);
338
339 if (!strcmp(a->attr.name, "gc_segment_mode"))
340 return sysfs_emit(buf, "%s\n",
341 gc_mode_names[sbi->gc_segment_mode]);
342
343 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
344 return sysfs_emit(buf, "%u\n",
345 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]);
346 }
347
348 if (!strcmp(a->attr.name, "current_atomic_write")) {
349 s64 current_write = atomic64_read(&sbi->current_atomic_write);
350
351 return sysfs_emit(buf, "%lld\n", current_write);
352 }
353
354 if (!strcmp(a->attr.name, "peak_atomic_write"))
355 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write);
356
357 if (!strcmp(a->attr.name, "committed_atomic_block"))
358 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block);
359
360 if (!strcmp(a->attr.name, "revoked_atomic_block"))
361 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block);
362
363 ui = (unsigned int *)(ptr + a->offset);
364
365 return sprintf(buf, "%u\n", *ui);
366 }
367
__sbi_store(struct f2fs_attr * a,struct f2fs_sb_info * sbi,const char * buf,size_t count)368 static ssize_t __sbi_store(struct f2fs_attr *a,
369 struct f2fs_sb_info *sbi,
370 const char *buf, size_t count)
371 {
372 unsigned char *ptr;
373 unsigned long t;
374 unsigned int *ui;
375 ssize_t ret;
376
377 ptr = __struct_ptr(sbi, a->struct_type);
378 if (!ptr)
379 return -EINVAL;
380
381 if (!strcmp(a->attr.name, "extension_list")) {
382 const char *name = strim((char *)buf);
383 bool set = true, hot;
384
385 if (!strncmp(name, "[h]", 3))
386 hot = true;
387 else if (!strncmp(name, "[c]", 3))
388 hot = false;
389 else
390 return -EINVAL;
391
392 name += 3;
393
394 if (*name == '!') {
395 name++;
396 set = false;
397 }
398
399 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN)
400 return -EINVAL;
401
402 f2fs_down_write(&sbi->sb_lock);
403
404 ret = f2fs_update_extension_list(sbi, name, hot, set);
405 if (ret)
406 goto out;
407
408 ret = f2fs_commit_super(sbi, false);
409 if (ret)
410 f2fs_update_extension_list(sbi, name, hot, !set);
411 out:
412 f2fs_up_write(&sbi->sb_lock);
413 return ret ? ret : count;
414 }
415
416 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
417 const char *name = strim((char *)buf);
418 struct ckpt_req_control *cprc = &sbi->cprc_info;
419 int class;
420 long data;
421 int ret;
422
423 if (!strncmp(name, "rt,", 3))
424 class = IOPRIO_CLASS_RT;
425 else if (!strncmp(name, "be,", 3))
426 class = IOPRIO_CLASS_BE;
427 else
428 return -EINVAL;
429
430 name += 3;
431 ret = kstrtol(name, 10, &data);
432 if (ret)
433 return ret;
434 if (data >= IOPRIO_NR_LEVELS || data < 0)
435 return -EINVAL;
436
437 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data);
438 if (test_opt(sbi, MERGE_CHECKPOINT)) {
439 ret = set_task_ioprio(cprc->f2fs_issue_ckpt,
440 cprc->ckpt_thread_ioprio);
441 if (ret)
442 return ret;
443 }
444
445 return count;
446 }
447
448 ui = (unsigned int *)(ptr + a->offset);
449
450 ret = kstrtoul(skip_spaces(buf), 0, &t);
451 if (ret < 0)
452 return ret;
453 #ifdef CONFIG_F2FS_FAULT_INJECTION
454 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
455 return -EINVAL;
456 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
457 return -EINVAL;
458 #endif
459 if (a->struct_type == RESERVED_BLOCKS) {
460 spin_lock(&sbi->stat_lock);
461 if (t > (unsigned long)(sbi->user_block_count -
462 F2FS_OPTION(sbi).root_reserved_blocks -
463 sbi->blocks_per_seg *
464 SM_I(sbi)->additional_reserved_segments)) {
465 spin_unlock(&sbi->stat_lock);
466 return -EINVAL;
467 }
468 *ui = t;
469 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
470 sbi->user_block_count - valid_user_blocks(sbi));
471 spin_unlock(&sbi->stat_lock);
472 return count;
473 }
474
475 if (!strcmp(a->attr.name, "discard_granularity")) {
476 if (t == 0 || t > MAX_PLIST_NUM)
477 return -EINVAL;
478 if (!f2fs_block_unit_discard(sbi))
479 return -EINVAL;
480 if (t == *ui)
481 return count;
482 *ui = t;
483 return count;
484 }
485
486 if (!strcmp(a->attr.name, "migration_granularity")) {
487 if (t == 0 || t > sbi->segs_per_sec)
488 return -EINVAL;
489 }
490
491 if (!strcmp(a->attr.name, "trim_sections"))
492 return -EINVAL;
493
494 if (!strcmp(a->attr.name, "gc_urgent")) {
495 if (t == 0) {
496 sbi->gc_mode = GC_NORMAL;
497 } else if (t == 1) {
498 sbi->gc_mode = GC_URGENT_HIGH;
499 if (sbi->gc_thread) {
500 sbi->gc_thread->gc_wake = 1;
501 wake_up_interruptible_all(
502 &sbi->gc_thread->gc_wait_queue_head);
503 wake_up_discard_thread(sbi, true);
504 }
505 } else if (t == 2) {
506 sbi->gc_mode = GC_URGENT_LOW;
507 } else if (t == 3) {
508 sbi->gc_mode = GC_URGENT_MID;
509 if (sbi->gc_thread) {
510 sbi->gc_thread->gc_wake = 1;
511 wake_up_interruptible_all(
512 &sbi->gc_thread->gc_wait_queue_head);
513 }
514 } else {
515 return -EINVAL;
516 }
517 return count;
518 }
519 if (!strcmp(a->attr.name, "gc_idle")) {
520 if (t == GC_IDLE_CB) {
521 sbi->gc_mode = GC_IDLE_CB;
522 } else if (t == GC_IDLE_GREEDY) {
523 sbi->gc_mode = GC_IDLE_GREEDY;
524 } else if (t == GC_IDLE_AT) {
525 if (!sbi->am.atgc_enabled)
526 return -EINVAL;
527 sbi->gc_mode = GC_IDLE_AT;
528 } else {
529 sbi->gc_mode = GC_NORMAL;
530 }
531 return count;
532 }
533
534 if (!strcmp(a->attr.name, "gc_urgent_high_remaining")) {
535 spin_lock(&sbi->gc_urgent_high_lock);
536 sbi->gc_urgent_high_remaining = t;
537 spin_unlock(&sbi->gc_urgent_high_lock);
538
539 return count;
540 }
541
542 #ifdef CONFIG_F2FS_IOSTAT
543 if (!strcmp(a->attr.name, "iostat_enable")) {
544 sbi->iostat_enable = !!t;
545 if (!sbi->iostat_enable)
546 f2fs_reset_iostat(sbi);
547 return count;
548 }
549
550 if (!strcmp(a->attr.name, "iostat_period_ms")) {
551 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
552 return -EINVAL;
553 spin_lock(&sbi->iostat_lock);
554 sbi->iostat_period_ms = (unsigned int)t;
555 spin_unlock(&sbi->iostat_lock);
556 return count;
557 }
558 #endif
559
560 #ifdef CONFIG_F2FS_FS_COMPRESSION
561 if (!strcmp(a->attr.name, "compr_written_block") ||
562 !strcmp(a->attr.name, "compr_saved_block")) {
563 if (t != 0)
564 return -EINVAL;
565 sbi->compr_written_block = 0;
566 sbi->compr_saved_block = 0;
567 return count;
568 }
569
570 if (!strcmp(a->attr.name, "compr_new_inode")) {
571 if (t != 0)
572 return -EINVAL;
573 sbi->compr_new_inode = 0;
574 return count;
575 }
576 #endif
577
578 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
579 if (t > 100)
580 return -EINVAL;
581 sbi->am.candidate_ratio = t;
582 return count;
583 }
584
585 if (!strcmp(a->attr.name, "atgc_age_weight")) {
586 if (t > 100)
587 return -EINVAL;
588 sbi->am.age_weight = t;
589 return count;
590 }
591
592 if (!strcmp(a->attr.name, "gc_segment_mode")) {
593 if (t < MAX_GC_MODE)
594 sbi->gc_segment_mode = t;
595 else
596 return -EINVAL;
597 return count;
598 }
599
600 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
601 if (t != 0)
602 return -EINVAL;
603 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0;
604 return count;
605 }
606
607 if (!strcmp(a->attr.name, "seq_file_ra_mul")) {
608 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL)
609 sbi->seq_file_ra_mul = t;
610 else
611 return -EINVAL;
612 return count;
613 }
614
615 if (!strcmp(a->attr.name, "max_fragment_chunk")) {
616 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
617 sbi->max_fragment_chunk = t;
618 else
619 return -EINVAL;
620 return count;
621 }
622
623 if (!strcmp(a->attr.name, "max_fragment_hole")) {
624 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
625 sbi->max_fragment_hole = t;
626 else
627 return -EINVAL;
628 return count;
629 }
630
631 if (!strcmp(a->attr.name, "peak_atomic_write")) {
632 if (t != 0)
633 return -EINVAL;
634 sbi->peak_atomic_write = 0;
635 return count;
636 }
637
638 if (!strcmp(a->attr.name, "committed_atomic_block")) {
639 if (t != 0)
640 return -EINVAL;
641 sbi->committed_atomic_block = 0;
642 return count;
643 }
644
645 if (!strcmp(a->attr.name, "revoked_atomic_block")) {
646 if (t != 0)
647 return -EINVAL;
648 sbi->revoked_atomic_block = 0;
649 return count;
650 }
651
652 *ui = (unsigned int)t;
653
654 return count;
655 }
656
f2fs_sbi_store(struct f2fs_attr * a,struct f2fs_sb_info * sbi,const char * buf,size_t count)657 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
658 struct f2fs_sb_info *sbi,
659 const char *buf, size_t count)
660 {
661 ssize_t ret;
662 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
663 a->struct_type == GC_THREAD);
664
665 if (gc_entry) {
666 if (!down_read_trylock(&sbi->sb->s_umount))
667 return -EAGAIN;
668 }
669 ret = __sbi_store(a, sbi, buf, count);
670 if (gc_entry)
671 up_read(&sbi->sb->s_umount);
672
673 return ret;
674 }
675
f2fs_attr_show(struct kobject * kobj,struct attribute * attr,char * buf)676 static ssize_t f2fs_attr_show(struct kobject *kobj,
677 struct attribute *attr, char *buf)
678 {
679 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
680 s_kobj);
681 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
682
683 return a->show ? a->show(a, sbi, buf) : 0;
684 }
685
f2fs_attr_store(struct kobject * kobj,struct attribute * attr,const char * buf,size_t len)686 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
687 const char *buf, size_t len)
688 {
689 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
690 s_kobj);
691 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
692
693 return a->store ? a->store(a, sbi, buf, len) : 0;
694 }
695
f2fs_sb_release(struct kobject * kobj)696 static void f2fs_sb_release(struct kobject *kobj)
697 {
698 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
699 s_kobj);
700 complete(&sbi->s_kobj_unregister);
701 }
702
703 /*
704 * Note that there are three feature list entries:
705 * 1) /sys/fs/f2fs/features
706 * : shows runtime features supported by in-kernel f2fs along with Kconfig.
707 * - ref. F2FS_FEATURE_RO_ATTR()
708 *
709 * 2) /sys/fs/f2fs/$s_id/features <deprecated>
710 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
711 * won't add new feature anymore, and thus, users should check entries in 3)
712 * instead of this 2).
713 *
714 * 3) /sys/fs/f2fs/$s_id/feature_list
715 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows
716 * sysfs entry rule where each entry should expose single value.
717 * This list covers old feature list provided by 2) and beyond. Therefore,
718 * please add new on-disk feature in this list only.
719 * - ref. F2FS_SB_FEATURE_RO_ATTR()
720 */
f2fs_feature_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)721 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
722 struct f2fs_sb_info *sbi, char *buf)
723 {
724 return sprintf(buf, "supported\n");
725 }
726
727 #define F2FS_FEATURE_RO_ATTR(_name) \
728 static struct f2fs_attr f2fs_attr_##_name = { \
729 .attr = {.name = __stringify(_name), .mode = 0444 }, \
730 .show = f2fs_feature_show, \
731 }
732
f2fs_sb_feature_show(struct f2fs_attr * a,struct f2fs_sb_info * sbi,char * buf)733 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
734 struct f2fs_sb_info *sbi, char *buf)
735 {
736 if (F2FS_HAS_FEATURE(sbi, a->id))
737 return sprintf(buf, "supported\n");
738 return sprintf(buf, "unsupported\n");
739 }
740
741 #define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \
742 static struct f2fs_attr f2fs_attr_sb_##_name = { \
743 .attr = {.name = __stringify(_name), .mode = 0444 }, \
744 .show = f2fs_sb_feature_show, \
745 .id = F2FS_FEATURE_##_feat, \
746 }
747
748 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
749 static struct f2fs_attr f2fs_attr_##_name = { \
750 .attr = {.name = __stringify(_name), .mode = _mode }, \
751 .show = _show, \
752 .store = _store, \
753 .struct_type = _struct_type, \
754 .offset = _offset \
755 }
756
757 #define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
758 F2FS_ATTR_OFFSET(struct_type, name, 0444, \
759 f2fs_sbi_show, NULL, \
760 offsetof(struct struct_name, elname))
761
762 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
763 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
764 f2fs_sbi_show, f2fs_sbi_store, \
765 offsetof(struct struct_name, elname))
766
767 #define F2FS_GENERAL_RO_ATTR(name) \
768 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
769
770 #define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \
771 static struct f2fs_attr f2fs_attr_##_name = { \
772 .attr = {.name = __stringify(_name), .mode = 0444 }, \
773 .show = f2fs_sbi_show, \
774 .struct_type = _struct_type, \
775 .offset = offsetof(struct _struct_name, _elname), \
776 }
777
778 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
779 urgent_sleep_time);
780 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
781 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
782 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
783 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
784 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
785 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
786 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
787 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_discard_request, max_discard_request);
788 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, min_discard_issue_time, min_discard_issue_time);
789 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, mid_discard_issue_time, mid_discard_issue_time);
790 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_discard_issue_time, max_discard_issue_time);
791 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
792 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
793 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
794 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
795 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
796 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
797 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks);
798 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
799 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
800 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
801 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
802 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
803 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, max_roll_forward_node_blocks, max_rf_node_blocks);
804 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
805 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity);
806 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
807 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
808 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
809 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
810 interval_time[DISCARD_TIME]);
811 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
812 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info,
813 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
814 #ifdef CONFIG_F2FS_IOSTAT
815 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
816 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_period_ms, iostat_period_ms);
817 #endif
818 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
819 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_io_bytes, max_io_bytes);
820 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
821 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
822 #ifdef CONFIG_F2FS_FAULT_INJECTION
823 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
824 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
825 #endif
826 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, data_io_flag, data_io_flag);
827 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, node_io_flag, node_io_flag);
828 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent_high_remaining, gc_urgent_high_remaining);
829 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, ckpt_thread_ioprio, ckpt_thread_ioprio);
830 F2FS_GENERAL_RO_ATTR(dirty_segments);
831 F2FS_GENERAL_RO_ATTR(free_segments);
832 F2FS_GENERAL_RO_ATTR(ovp_segments);
833 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
834 F2FS_GENERAL_RO_ATTR(features);
835 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
836 F2FS_GENERAL_RO_ATTR(unusable);
837 F2FS_GENERAL_RO_ATTR(encoding);
838 F2FS_GENERAL_RO_ATTR(mounted_time_sec);
839 F2FS_GENERAL_RO_ATTR(main_blkaddr);
840 F2FS_GENERAL_RO_ATTR(pending_discard);
841 #ifdef CONFIG_F2FS_STAT_FS
842 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count);
843 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count);
844 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count);
845 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc);
846 F2FS_GENERAL_RO_ATTR(moved_blocks_background);
847 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
848 F2FS_GENERAL_RO_ATTR(avg_vblocks);
849 #endif
850
851 #ifdef CONFIG_FS_ENCRYPTION
852 F2FS_FEATURE_RO_ATTR(encryption);
853 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
854 #if IS_ENABLED(CONFIG_UNICODE)
855 F2FS_FEATURE_RO_ATTR(encrypted_casefold);
856 #endif
857 #endif /* CONFIG_FS_ENCRYPTION */
858 #ifdef CONFIG_BLK_DEV_ZONED
859 F2FS_FEATURE_RO_ATTR(block_zoned);
860 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, unusable_blocks_per_sec,
861 unusable_blocks_per_sec);
862 #endif
863 F2FS_FEATURE_RO_ATTR(atomic_write);
864 F2FS_FEATURE_RO_ATTR(extra_attr);
865 F2FS_FEATURE_RO_ATTR(project_quota);
866 F2FS_FEATURE_RO_ATTR(inode_checksum);
867 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
868 F2FS_FEATURE_RO_ATTR(quota_ino);
869 F2FS_FEATURE_RO_ATTR(inode_crtime);
870 F2FS_FEATURE_RO_ATTR(lost_found);
871 #ifdef CONFIG_FS_VERITY
872 F2FS_FEATURE_RO_ATTR(verity);
873 #endif
874 F2FS_FEATURE_RO_ATTR(sb_checksum);
875 #if IS_ENABLED(CONFIG_UNICODE)
876 F2FS_FEATURE_RO_ATTR(casefold);
877 #endif
878 F2FS_FEATURE_RO_ATTR(readonly);
879 #ifdef CONFIG_F2FS_FS_COMPRESSION
880 F2FS_FEATURE_RO_ATTR(compression);
881 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_written_block, compr_written_block);
882 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_saved_block, compr_saved_block);
883 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_new_inode, compr_new_inode);
884 #endif
885 F2FS_FEATURE_RO_ATTR(pin_file);
886
887 /* For ATGC */
888 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_ratio, candidate_ratio);
889 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_count, max_candidate_count);
890 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_weight, age_weight);
891 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_threshold, age_threshold);
892
893 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, seq_file_ra_mul, seq_file_ra_mul);
894 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_segment_mode, gc_segment_mode);
895 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_reclaimed_segments, gc_reclaimed_segs);
896 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_fragment_chunk, max_fragment_chunk);
897 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_fragment_hole, max_fragment_hole);
898
899 /* For atomic write */
900 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, current_atomic_write, current_atomic_write);
901 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, peak_atomic_write, peak_atomic_write);
902 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, committed_atomic_block, committed_atomic_block);
903 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, revoked_atomic_block, revoked_atomic_block);
904
905 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
906 static struct attribute *f2fs_attrs[] = {
907 ATTR_LIST(gc_urgent_sleep_time),
908 ATTR_LIST(gc_min_sleep_time),
909 ATTR_LIST(gc_max_sleep_time),
910 ATTR_LIST(gc_no_gc_sleep_time),
911 ATTR_LIST(gc_idle),
912 ATTR_LIST(gc_urgent),
913 ATTR_LIST(reclaim_segments),
914 ATTR_LIST(main_blkaddr),
915 ATTR_LIST(max_small_discards),
916 ATTR_LIST(max_discard_request),
917 ATTR_LIST(min_discard_issue_time),
918 ATTR_LIST(mid_discard_issue_time),
919 ATTR_LIST(max_discard_issue_time),
920 ATTR_LIST(discard_granularity),
921 ATTR_LIST(pending_discard),
922 ATTR_LIST(batched_trim_sections),
923 ATTR_LIST(ipu_policy),
924 ATTR_LIST(min_ipu_util),
925 ATTR_LIST(min_fsync_blocks),
926 ATTR_LIST(min_seq_blocks),
927 ATTR_LIST(min_hot_blocks),
928 ATTR_LIST(min_ssr_sections),
929 ATTR_LIST(max_victim_search),
930 ATTR_LIST(migration_granularity),
931 ATTR_LIST(dir_level),
932 ATTR_LIST(ram_thresh),
933 ATTR_LIST(ra_nid_pages),
934 ATTR_LIST(dirty_nats_ratio),
935 ATTR_LIST(max_roll_forward_node_blocks),
936 ATTR_LIST(cp_interval),
937 ATTR_LIST(idle_interval),
938 ATTR_LIST(discard_idle_interval),
939 ATTR_LIST(gc_idle_interval),
940 ATTR_LIST(umount_discard_timeout),
941 #ifdef CONFIG_F2FS_IOSTAT
942 ATTR_LIST(iostat_enable),
943 ATTR_LIST(iostat_period_ms),
944 #endif
945 ATTR_LIST(readdir_ra),
946 ATTR_LIST(max_io_bytes),
947 ATTR_LIST(gc_pin_file_thresh),
948 ATTR_LIST(extension_list),
949 #ifdef CONFIG_F2FS_FAULT_INJECTION
950 ATTR_LIST(inject_rate),
951 ATTR_LIST(inject_type),
952 #endif
953 ATTR_LIST(data_io_flag),
954 ATTR_LIST(node_io_flag),
955 ATTR_LIST(gc_urgent_high_remaining),
956 ATTR_LIST(ckpt_thread_ioprio),
957 ATTR_LIST(dirty_segments),
958 ATTR_LIST(free_segments),
959 ATTR_LIST(ovp_segments),
960 ATTR_LIST(unusable),
961 ATTR_LIST(lifetime_write_kbytes),
962 ATTR_LIST(features),
963 ATTR_LIST(reserved_blocks),
964 ATTR_LIST(current_reserved_blocks),
965 ATTR_LIST(encoding),
966 ATTR_LIST(mounted_time_sec),
967 #ifdef CONFIG_F2FS_STAT_FS
968 ATTR_LIST(cp_foreground_calls),
969 ATTR_LIST(cp_background_calls),
970 ATTR_LIST(gc_foreground_calls),
971 ATTR_LIST(gc_background_calls),
972 ATTR_LIST(moved_blocks_foreground),
973 ATTR_LIST(moved_blocks_background),
974 ATTR_LIST(avg_vblocks),
975 #endif
976 #ifdef CONFIG_BLK_DEV_ZONED
977 ATTR_LIST(unusable_blocks_per_sec),
978 #endif
979 #ifdef CONFIG_F2FS_FS_COMPRESSION
980 ATTR_LIST(compr_written_block),
981 ATTR_LIST(compr_saved_block),
982 ATTR_LIST(compr_new_inode),
983 #endif
984 /* For ATGC */
985 ATTR_LIST(atgc_candidate_ratio),
986 ATTR_LIST(atgc_candidate_count),
987 ATTR_LIST(atgc_age_weight),
988 ATTR_LIST(atgc_age_threshold),
989 ATTR_LIST(seq_file_ra_mul),
990 ATTR_LIST(gc_segment_mode),
991 ATTR_LIST(gc_reclaimed_segments),
992 ATTR_LIST(max_fragment_chunk),
993 ATTR_LIST(max_fragment_hole),
994 ATTR_LIST(current_atomic_write),
995 ATTR_LIST(peak_atomic_write),
996 ATTR_LIST(committed_atomic_block),
997 ATTR_LIST(revoked_atomic_block),
998 NULL,
999 };
1000 ATTRIBUTE_GROUPS(f2fs);
1001
1002 static struct attribute *f2fs_feat_attrs[] = {
1003 #ifdef CONFIG_FS_ENCRYPTION
1004 ATTR_LIST(encryption),
1005 ATTR_LIST(test_dummy_encryption_v2),
1006 #if IS_ENABLED(CONFIG_UNICODE)
1007 ATTR_LIST(encrypted_casefold),
1008 #endif
1009 #endif /* CONFIG_FS_ENCRYPTION */
1010 #ifdef CONFIG_BLK_DEV_ZONED
1011 ATTR_LIST(block_zoned),
1012 #endif
1013 ATTR_LIST(atomic_write),
1014 ATTR_LIST(extra_attr),
1015 ATTR_LIST(project_quota),
1016 ATTR_LIST(inode_checksum),
1017 ATTR_LIST(flexible_inline_xattr),
1018 ATTR_LIST(quota_ino),
1019 ATTR_LIST(inode_crtime),
1020 ATTR_LIST(lost_found),
1021 #ifdef CONFIG_FS_VERITY
1022 ATTR_LIST(verity),
1023 #endif
1024 ATTR_LIST(sb_checksum),
1025 #if IS_ENABLED(CONFIG_UNICODE)
1026 ATTR_LIST(casefold),
1027 #endif
1028 ATTR_LIST(readonly),
1029 #ifdef CONFIG_F2FS_FS_COMPRESSION
1030 ATTR_LIST(compression),
1031 #endif
1032 ATTR_LIST(pin_file),
1033 NULL,
1034 };
1035 ATTRIBUTE_GROUPS(f2fs_feat);
1036
1037 F2FS_GENERAL_RO_ATTR(sb_status);
1038 F2FS_GENERAL_RO_ATTR(cp_status);
1039 static struct attribute *f2fs_stat_attrs[] = {
1040 ATTR_LIST(sb_status),
1041 ATTR_LIST(cp_status),
1042 NULL,
1043 };
1044 ATTRIBUTE_GROUPS(f2fs_stat);
1045
1046 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1047 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1048 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1049 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1050 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1051 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1052 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1053 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1054 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1055 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1056 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1057 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1058 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1059 F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1060
1061 static struct attribute *f2fs_sb_feat_attrs[] = {
1062 ATTR_LIST(sb_encryption),
1063 ATTR_LIST(sb_block_zoned),
1064 ATTR_LIST(sb_extra_attr),
1065 ATTR_LIST(sb_project_quota),
1066 ATTR_LIST(sb_inode_checksum),
1067 ATTR_LIST(sb_flexible_inline_xattr),
1068 ATTR_LIST(sb_quota_ino),
1069 ATTR_LIST(sb_inode_crtime),
1070 ATTR_LIST(sb_lost_found),
1071 ATTR_LIST(sb_verity),
1072 ATTR_LIST(sb_sb_checksum),
1073 ATTR_LIST(sb_casefold),
1074 ATTR_LIST(sb_compression),
1075 ATTR_LIST(sb_readonly),
1076 NULL,
1077 };
1078 ATTRIBUTE_GROUPS(f2fs_sb_feat);
1079
1080 static const struct sysfs_ops f2fs_attr_ops = {
1081 .show = f2fs_attr_show,
1082 .store = f2fs_attr_store,
1083 };
1084
1085 static struct kobj_type f2fs_sb_ktype = {
1086 .default_groups = f2fs_groups,
1087 .sysfs_ops = &f2fs_attr_ops,
1088 .release = f2fs_sb_release,
1089 };
1090
1091 static struct kobj_type f2fs_ktype = {
1092 .sysfs_ops = &f2fs_attr_ops,
1093 };
1094
1095 static struct kset f2fs_kset = {
1096 .kobj = {.ktype = &f2fs_ktype},
1097 };
1098
1099 static struct kobj_type f2fs_feat_ktype = {
1100 .default_groups = f2fs_feat_groups,
1101 .sysfs_ops = &f2fs_attr_ops,
1102 };
1103
1104 static struct kobject f2fs_feat = {
1105 .kset = &f2fs_kset,
1106 };
1107
f2fs_stat_attr_show(struct kobject * kobj,struct attribute * attr,char * buf)1108 static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
1109 struct attribute *attr, char *buf)
1110 {
1111 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1112 s_stat_kobj);
1113 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1114
1115 return a->show ? a->show(a, sbi, buf) : 0;
1116 }
1117
f2fs_stat_attr_store(struct kobject * kobj,struct attribute * attr,const char * buf,size_t len)1118 static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
1119 const char *buf, size_t len)
1120 {
1121 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1122 s_stat_kobj);
1123 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1124
1125 return a->store ? a->store(a, sbi, buf, len) : 0;
1126 }
1127
f2fs_stat_kobj_release(struct kobject * kobj)1128 static void f2fs_stat_kobj_release(struct kobject *kobj)
1129 {
1130 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1131 s_stat_kobj);
1132 complete(&sbi->s_stat_kobj_unregister);
1133 }
1134
1135 static const struct sysfs_ops f2fs_stat_attr_ops = {
1136 .show = f2fs_stat_attr_show,
1137 .store = f2fs_stat_attr_store,
1138 };
1139
1140 static struct kobj_type f2fs_stat_ktype = {
1141 .default_groups = f2fs_stat_groups,
1142 .sysfs_ops = &f2fs_stat_attr_ops,
1143 .release = f2fs_stat_kobj_release,
1144 };
1145
f2fs_sb_feat_attr_show(struct kobject * kobj,struct attribute * attr,char * buf)1146 static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
1147 struct attribute *attr, char *buf)
1148 {
1149 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1150 s_feature_list_kobj);
1151 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1152
1153 return a->show ? a->show(a, sbi, buf) : 0;
1154 }
1155
f2fs_feature_list_kobj_release(struct kobject * kobj)1156 static void f2fs_feature_list_kobj_release(struct kobject *kobj)
1157 {
1158 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1159 s_feature_list_kobj);
1160 complete(&sbi->s_feature_list_kobj_unregister);
1161 }
1162
1163 static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1164 .show = f2fs_sb_feat_attr_show,
1165 };
1166
1167 static struct kobj_type f2fs_feature_list_ktype = {
1168 .default_groups = f2fs_sb_feat_groups,
1169 .sysfs_ops = &f2fs_feature_list_attr_ops,
1170 .release = f2fs_feature_list_kobj_release,
1171 };
1172
segment_info_seq_show(struct seq_file * seq,void * offset)1173 static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
1174 void *offset)
1175 {
1176 struct super_block *sb = seq->private;
1177 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1178 unsigned int total_segs =
1179 le32_to_cpu(sbi->raw_super->segment_count_main);
1180 int i;
1181
1182 seq_puts(seq, "format: segment_type|valid_blocks\n"
1183 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1184
1185 for (i = 0; i < total_segs; i++) {
1186 struct seg_entry *se = get_seg_entry(sbi, i);
1187
1188 if ((i % 10) == 0)
1189 seq_printf(seq, "%-10d", i);
1190 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
1191 if ((i % 10) == 9 || i == (total_segs - 1))
1192 seq_putc(seq, '\n');
1193 else
1194 seq_putc(seq, ' ');
1195 }
1196
1197 return 0;
1198 }
1199
segment_bits_seq_show(struct seq_file * seq,void * offset)1200 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
1201 void *offset)
1202 {
1203 struct super_block *sb = seq->private;
1204 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1205 unsigned int total_segs =
1206 le32_to_cpu(sbi->raw_super->segment_count_main);
1207 int i, j;
1208
1209 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
1210 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1211
1212 for (i = 0; i < total_segs; i++) {
1213 struct seg_entry *se = get_seg_entry(sbi, i);
1214
1215 seq_printf(seq, "%-10d", i);
1216 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
1217 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
1218 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
1219 seq_putc(seq, '\n');
1220 }
1221 return 0;
1222 }
1223
victim_bits_seq_show(struct seq_file * seq,void * offset)1224 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
1225 void *offset)
1226 {
1227 struct super_block *sb = seq->private;
1228 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1229 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1230 int i;
1231
1232 seq_puts(seq, "format: victim_secmap bitmaps\n");
1233
1234 for (i = 0; i < MAIN_SECS(sbi); i++) {
1235 if ((i % 10) == 0)
1236 seq_printf(seq, "%-10d", i);
1237 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
1238 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
1239 seq_putc(seq, '\n');
1240 else
1241 seq_putc(seq, ' ');
1242 }
1243 return 0;
1244 }
1245
f2fs_init_sysfs(void)1246 int __init f2fs_init_sysfs(void)
1247 {
1248 int ret;
1249
1250 kobject_set_name(&f2fs_kset.kobj, "f2fs");
1251 f2fs_kset.kobj.parent = fs_kobj;
1252 ret = kset_register(&f2fs_kset);
1253 if (ret)
1254 return ret;
1255
1256 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
1257 NULL, "features");
1258 if (ret) {
1259 kobject_put(&f2fs_feat);
1260 kset_unregister(&f2fs_kset);
1261 } else {
1262 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
1263 }
1264 return ret;
1265 }
1266
f2fs_exit_sysfs(void)1267 void f2fs_exit_sysfs(void)
1268 {
1269 kobject_put(&f2fs_feat);
1270 kset_unregister(&f2fs_kset);
1271 remove_proc_entry("fs/f2fs", NULL);
1272 f2fs_proc_root = NULL;
1273 }
1274
f2fs_register_sysfs(struct f2fs_sb_info * sbi)1275 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
1276 {
1277 struct super_block *sb = sbi->sb;
1278 int err;
1279
1280 sbi->s_kobj.kset = &f2fs_kset;
1281 init_completion(&sbi->s_kobj_unregister);
1282 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
1283 "%s", sb->s_id);
1284 if (err)
1285 goto put_sb_kobj;
1286
1287 sbi->s_stat_kobj.kset = &f2fs_kset;
1288 init_completion(&sbi->s_stat_kobj_unregister);
1289 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
1290 &sbi->s_kobj, "stat");
1291 if (err)
1292 goto put_stat_kobj;
1293
1294 sbi->s_feature_list_kobj.kset = &f2fs_kset;
1295 init_completion(&sbi->s_feature_list_kobj_unregister);
1296 err = kobject_init_and_add(&sbi->s_feature_list_kobj,
1297 &f2fs_feature_list_ktype,
1298 &sbi->s_kobj, "feature_list");
1299 if (err)
1300 goto put_feature_list_kobj;
1301
1302 if (f2fs_proc_root)
1303 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
1304
1305 if (sbi->s_proc) {
1306 proc_create_single_data("segment_info", 0444, sbi->s_proc,
1307 segment_info_seq_show, sb);
1308 proc_create_single_data("segment_bits", 0444, sbi->s_proc,
1309 segment_bits_seq_show, sb);
1310 #ifdef CONFIG_F2FS_IOSTAT
1311 proc_create_single_data("iostat_info", 0444, sbi->s_proc,
1312 iostat_info_seq_show, sb);
1313 #endif
1314 proc_create_single_data("victim_bits", 0444, sbi->s_proc,
1315 victim_bits_seq_show, sb);
1316 }
1317 return 0;
1318 put_feature_list_kobj:
1319 kobject_put(&sbi->s_feature_list_kobj);
1320 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1321 put_stat_kobj:
1322 kobject_put(&sbi->s_stat_kobj);
1323 wait_for_completion(&sbi->s_stat_kobj_unregister);
1324 put_sb_kobj:
1325 kobject_put(&sbi->s_kobj);
1326 wait_for_completion(&sbi->s_kobj_unregister);
1327 return err;
1328 }
1329
f2fs_unregister_sysfs(struct f2fs_sb_info * sbi)1330 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
1331 {
1332 if (sbi->s_proc) {
1333 #ifdef CONFIG_F2FS_IOSTAT
1334 remove_proc_entry("iostat_info", sbi->s_proc);
1335 #endif
1336 remove_proc_entry("segment_info", sbi->s_proc);
1337 remove_proc_entry("segment_bits", sbi->s_proc);
1338 remove_proc_entry("victim_bits", sbi->s_proc);
1339 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
1340 }
1341
1342 kobject_del(&sbi->s_stat_kobj);
1343 kobject_put(&sbi->s_stat_kobj);
1344 wait_for_completion(&sbi->s_stat_kobj_unregister);
1345 kobject_del(&sbi->s_feature_list_kobj);
1346 kobject_put(&sbi->s_feature_list_kobj);
1347 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1348
1349 kobject_del(&sbi->s_kobj);
1350 kobject_put(&sbi->s_kobj);
1351 wait_for_completion(&sbi->s_kobj_unregister);
1352 }
1353