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