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