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