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