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Merge tag 'mfd-next-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
[linux-2.6-block.git] / fs / f2fs / sysfs.c
CommitLineData
7c1a000d 1// SPDX-License-Identifier: GPL-2.0
8ceffcb2
CY		 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>
8ceffcb2 8 */
cb15d1e4 9#include <linux/compiler.h>
8ceffcb2
CY		 10#include <linux/proc_fs.h>
11#include <linux/f2fs_fs.h>
299aa41a 12#include <linux/seq_file.h>
5aba5430 13#include <linux/unicode.h>
8ceffcb2
CY		 14
15#include "f2fs.h"
16#include "segment.h"
17#include "gc.h"
18
19static struct proc_dir_entry *f2fs_proc_root;
8ceffcb2
CY		 20
21/* Sysfs support for f2fs */
22enum {
23 GC_THREAD, /* struct f2fs_gc_thread */
24 SM_INFO, /* struct f2fs_sm_info */
25 DCC_INFO, /* struct discard_cmd_control */
26 NM_INFO, /* struct f2fs_nm_info */
27 F2FS_SBI, /* struct f2fs_sb_info */
fc7100ea
HV		 28#ifdef CONFIG_F2FS_STAT_FS
29 STAT_INFO, /* struct f2fs_stat_info */
30#endif
8ceffcb2
CY		 31#ifdef CONFIG_F2FS_FAULT_INJECTION
32 FAULT_INFO_RATE, /* struct f2fs_fault_info */
33 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
34#endif
80d42145 35 RESERVED_BLOCKS, /* struct f2fs_sb_info */
8ceffcb2
CY		 36};
37
38struct f2fs_attr {
39 struct attribute attr;
40 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
41 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
42 const char *, size_t);
43 int struct_type;
44 int offset;
bf9e697e 45 int id;
8ceffcb2
CY		 46};
47
fc7100ea
HV		 48static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
49 struct f2fs_sb_info *sbi, char *buf);
50
8ceffcb2
CY		 51static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
52{
53 if (struct_type == GC_THREAD)
54 return (unsigned char *)sbi->gc_thread;
55 else if (struct_type == SM_INFO)
56 return (unsigned char *)SM_I(sbi);
57 else if (struct_type == DCC_INFO)
58 return (unsigned char *)SM_I(sbi)->dcc_info;
59 else if (struct_type == NM_INFO)
60 return (unsigned char *)NM_I(sbi);
daeb433e 61 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
8ceffcb2
CY		 62 return (unsigned char *)sbi;
63#ifdef CONFIG_F2FS_FAULT_INJECTION
64 else if (struct_type == FAULT_INFO_RATE ||
65 struct_type == FAULT_INFO_TYPE)
63189b78 66 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
fc7100ea
HV		 67#endif
68#ifdef CONFIG_F2FS_STAT_FS
69 else if (struct_type == STAT_INFO)
70 return (unsigned char *)F2FS_STAT(sbi);
8ceffcb2
CY		 71#endif
72 return NULL;
73}
74
8f1572f7
JK		 75static ssize_t dirty_segments_show(struct f2fs_attr *a,
76 struct f2fs_sb_info *sbi, char *buf)
77{
fc7100ea
HV		 78 return sprintf(buf, "%llu\n",
79 (unsigned long long)(dirty_segments(sbi)));
8f1572f7
JK		 80}
81
fc7100ea 82static ssize_t free_segments_show(struct f2fs_attr *a,
4d3aed70
DR		 83 struct f2fs_sb_info *sbi, char *buf)
84{
fc7100ea
HV		 85 return sprintf(buf, "%llu\n",
86 (unsigned long long)(free_segments(sbi)));
5aba5430 87}
4d3aed70 88
8ceffcb2
CY		 89static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
90 struct f2fs_sb_info *sbi, char *buf)
91{
92 struct super_block *sb = sbi->sb;
93
94 if (!sb->s_bdev->bd_part)
fc7100ea 95 return sprintf(buf, "0\n");
8ceffcb2 96
fc7100ea
HV		 97 return sprintf(buf, "%llu\n",
98 (unsigned long long)(sbi->kbytes_written +
8ceffcb2
CY		 99 BD_PART_WRITTEN(sbi)));
100}
101
bf9e697e
JK		 102static ssize_t features_show(struct f2fs_attr *a,
103 struct f2fs_sb_info *sbi, char *buf)
104{
105 struct super_block *sb = sbi->sb;
106 int len = 0;
107
108 if (!sb->s_bdev->bd_part)
fc7100ea 109 return sprintf(buf, "0\n");
bf9e697e 110
7beb01f7 111 if (f2fs_sb_has_encrypt(sbi))
c6d5789b 112 len += scnprintf(buf, PAGE_SIZE - len, "%s",
bf9e697e 113 "encryption");
7beb01f7 114 if (f2fs_sb_has_blkzoned(sbi))
c6d5789b 115 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
bf9e697e 116 len ? ", " : "", "blkzoned");
7beb01f7 117 if (f2fs_sb_has_extra_attr(sbi))
c6d5789b 118 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
bf9e697e 119 len ? ", " : "", "extra_attr");
7beb01f7 120 if (f2fs_sb_has_project_quota(sbi))
c6d5789b 121 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
bf9e697e 122 len ? ", " : "", "projquota");
7beb01f7 123 if (f2fs_sb_has_inode_chksum(sbi))
c6d5789b 124 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
bf9e697e 125 len ? ", " : "", "inode_checksum");
7beb01f7 126 if (f2fs_sb_has_flexible_inline_xattr(sbi))
c6d5789b 127 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
6afc662e 128 len ? ", " : "", "flexible_inline_xattr");
7beb01f7 129 if (f2fs_sb_has_quota_ino(sbi))
c6d5789b 130 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
234a9689 131 len ? ", " : "", "quota_ino");
7beb01f7 132 if (f2fs_sb_has_inode_crtime(sbi))
c6d5789b 133 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
1c1d35df 134 len ? ", " : "", "inode_crtime");
7beb01f7 135 if (f2fs_sb_has_lost_found(sbi))
c6d5789b 136 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
b7c409de 137 len ? ", " : "", "lost_found");
95ae251f 138 if (f2fs_sb_has_verity(sbi))
c6d5789b 139 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
95ae251f 140 len ? ", " : "", "verity");
7beb01f7 141 if (f2fs_sb_has_sb_chksum(sbi))
c6d5789b 142 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
d440c52d 143 len ? ", " : "", "sb_checksum");
5aba5430 144 if (f2fs_sb_has_casefold(sbi))
c6d5789b 145 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
5aba5430 146 len ? ", " : "", "casefold");
4c8ff709 147 if (f2fs_sb_has_compression(sbi))
c6d5789b 148 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
4c8ff709 149 len ? ", " : "", "compression");
c6d5789b 150 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
f5a53edc 151 len ? ", " : "", "pin_file");
c6d5789b 152 len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
bf9e697e
JK		 153 return len;
154}
155
80d42145
YS		 156static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
157 struct f2fs_sb_info *sbi, char *buf)
158{
fc7100ea
HV		 159 return sprintf(buf, "%u\n", sbi->current_reserved_blocks);
160}
161
162static ssize_t unusable_show(struct f2fs_attr *a,
163 struct f2fs_sb_info *sbi, char *buf)
164{
165 block_t unusable;
166
167 if (test_opt(sbi, DISABLE_CHECKPOINT))
168 unusable = sbi->unusable_block_count;
169 else
170 unusable = f2fs_get_unusable_blocks(sbi);
171 return sprintf(buf, "%llu\n", (unsigned long long)unusable);
80d42145
YS		 172}
173
fc7100ea
HV		 174static ssize_t encoding_show(struct f2fs_attr *a,
175 struct f2fs_sb_info *sbi, char *buf)
176{
177#ifdef CONFIG_UNICODE
178 if (f2fs_sb_has_casefold(sbi))
179 return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n",
180 sbi->s_encoding->charset,
181 (sbi->s_encoding->version >> 16) & 0xff,
182 (sbi->s_encoding->version >> 8) & 0xff,
183 sbi->s_encoding->version & 0xff);
184#endif
185 return sprintf(buf, "(none)");
186}
187
a7e679b5
JK		 188static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
189 struct f2fs_sb_info *sbi, char *buf)
190{
191 return sprintf(buf, "%llu", SIT_I(sbi)->mounted_time);
192}
193
fc7100ea
HV		 194#ifdef CONFIG_F2FS_STAT_FS
195static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
196 struct f2fs_sb_info *sbi, char *buf)
197{
198 struct f2fs_stat_info *si = F2FS_STAT(sbi);
199
200 return sprintf(buf, "%llu\n",
201 (unsigned long long)(si->tot_blks -
202 (si->bg_data_blks + si->bg_node_blks)));
203}
204
205static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
206 struct f2fs_sb_info *sbi, char *buf)
207{
208 struct f2fs_stat_info *si = F2FS_STAT(sbi);
209
210 return sprintf(buf, "%llu\n",
211 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
212}
213
214static ssize_t avg_vblocks_show(struct f2fs_attr *a,
215 struct f2fs_sb_info *sbi, char *buf)
216{
217 struct f2fs_stat_info *si = F2FS_STAT(sbi);
218
219 si->dirty_count = dirty_segments(sbi);
220 f2fs_update_sit_info(sbi);
221 return sprintf(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
222}
223#endif
224
8ceffcb2
CY		 225static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
226 struct f2fs_sb_info *sbi, char *buf)
227{
228 unsigned char *ptr = NULL;
229 unsigned int *ui;
230
231 ptr = __struct_ptr(sbi, a->struct_type);
232 if (!ptr)
233 return -EINVAL;
234
846ae671
CY		 235 if (!strcmp(a->attr.name, "extension_list")) {
236 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
237 sbi->raw_super->extension_list;
b6a06cbb
CY		 238 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
239 int hot_count = sbi->raw_super->hot_ext_count;
846ae671
CY		 240 int len = 0, i;
241
c6d5789b 242 len += scnprintf(buf + len, PAGE_SIZE - len,
4580038e 243 "cold file extension:\n");
b6a06cbb 244 for (i = 0; i < cold_count; i++)
c6d5789b 245 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
b6a06cbb
CY		 246 extlist[i]);
247
c6d5789b 248 len += scnprintf(buf + len, PAGE_SIZE - len,
4580038e 249 "hot file extension:\n");
b6a06cbb 250 for (i = cold_count; i < cold_count + hot_count; i++)
c6d5789b 251 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
846ae671
CY		 252 extlist[i]);
253 return len;
254 }
255
8ceffcb2
CY		 256 ui = (unsigned int *)(ptr + a->offset);
257
fc7100ea 258 return sprintf(buf, "%u\n", *ui);
8ceffcb2
CY		 259}
260
4d57b86d 261static ssize_t __sbi_store(struct f2fs_attr *a,
8ceffcb2
CY		 262 struct f2fs_sb_info *sbi,
263 const char *buf, size_t count)
264{
265 unsigned char *ptr;
266 unsigned long t;
267 unsigned int *ui;
268 ssize_t ret;
269
270 ptr = __struct_ptr(sbi, a->struct_type);
271 if (!ptr)
272 return -EINVAL;
273
846ae671
CY		 274 if (!strcmp(a->attr.name, "extension_list")) {
275 const char *name = strim((char *)buf);
b6a06cbb
CY		 276 bool set = true, hot;
277
278 if (!strncmp(name, "[h]", 3))
279 hot = true;
280 else if (!strncmp(name, "[c]", 3))
281 hot = false;
282 else
283 return -EINVAL;
284
285 name += 3;
846ae671 286
b6a06cbb 287 if (*name == '!') {
846ae671
CY		 288 name++;
289 set = false;
290 }
291
292 if (strlen(name) >= F2FS_EXTENSION_LEN)
293 return -EINVAL;
294
295 down_write(&sbi->sb_lock);
296
4d57b86d 297 ret = f2fs_update_extension_list(sbi, name, hot, set);
846ae671
CY		 298 if (ret)
299 goto out;
300
301 ret = f2fs_commit_super(sbi, false);
302 if (ret)
4d57b86d 303 f2fs_update_extension_list(sbi, name, hot, !set);
846ae671
CY		 304out:
305 up_write(&sbi->sb_lock);
306 return ret ? ret : count;
307 }
308
8ceffcb2
CY		 309 ui = (unsigned int *)(ptr + a->offset);
310
311 ret = kstrtoul(skip_spaces(buf), 0, &t);
312 if (ret < 0)
313 return ret;
314#ifdef CONFIG_F2FS_FAULT_INJECTION
315 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
316 return -EINVAL;
36c5733f
CY		 317 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
318 return -EINVAL;
8ceffcb2 319#endif
daeb433e
CY		 320 if (a->struct_type == RESERVED_BLOCKS) {
321 spin_lock(&sbi->stat_lock);
7e65be49 322 if (t > (unsigned long)(sbi->user_block_count -
63189b78 323 F2FS_OPTION(sbi).root_reserved_blocks)) {
daeb433e
CY		 324 spin_unlock(&sbi->stat_lock);
325 return -EINVAL;
326 }
327 *ui = t;
80d42145
YS		 328 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
329 sbi->user_block_count - valid_user_blocks(sbi));
daeb433e
CY		 330 spin_unlock(&sbi->stat_lock);
331 return count;
332 }
969d1b18
CY		 333
334 if (!strcmp(a->attr.name, "discard_granularity")) {
969d1b18
CY		 335 if (t == 0 || t > MAX_PLIST_NUM)
336 return -EINVAL;
337 if (t == *ui)
338 return count;
80647e5f 339 *ui = t;
969d1b18
CY		 340 return count;
341 }
342
34655575
CY		 343 if (!strcmp(a->attr.name, "migration_granularity")) {
344 if (t == 0 || t > sbi->segs_per_sec)
345 return -EINVAL;
346 }
347
377224c4
CY		 348 if (!strcmp(a->attr.name, "trim_sections"))
349 return -EINVAL;
350
5b0e9539
JK		 351 if (!strcmp(a->attr.name, "gc_urgent")) {
352 if (t >= 1) {
353 sbi->gc_mode = GC_URGENT;
354 if (sbi->gc_thread) {
a690efff 355 sbi->gc_thread->gc_wake = 1;
5b0e9539
JK		 356 wake_up_interruptible_all(
357 &sbi->gc_thread->gc_wait_queue_head);
358 wake_up_discard_thread(sbi, true);
359 }
360 } else {
361 sbi->gc_mode = GC_NORMAL;
362 }
363 return count;
364 }
365 if (!strcmp(a->attr.name, "gc_idle")) {
366 if (t == GC_IDLE_CB)
367 sbi->gc_mode = GC_IDLE_CB;
368 else if (t == GC_IDLE_GREEDY)
369 sbi->gc_mode = GC_IDLE_GREEDY;
370 else
371 sbi->gc_mode = GC_NORMAL;
372 return count;
373 }
374
b0af6d49 375
ac929858
SY		 376 if (!strcmp(a->attr.name, "iostat_enable")) {
377 sbi->iostat_enable = !!t;
378 if (!sbi->iostat_enable)
379 f2fs_reset_iostat(sbi);
380 return count;
381 }
382
383 *ui = (unsigned int)t;
384
8ceffcb2
CY		 385 return count;
386}
387
250dbf51
CY		 388static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
389 struct f2fs_sb_info *sbi,
390 const char *buf, size_t count)
391{
392 ssize_t ret;
393 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
394 a->struct_type == GC_THREAD);
395
a1933c09
JK		 396 if (gc_entry) {
397 if (!down_read_trylock(&sbi->sb->s_umount))
398 return -EAGAIN;
399 }
4d57b86d 400 ret = __sbi_store(a, sbi, buf, count);
250dbf51
CY		 401 if (gc_entry)
402 up_read(&sbi->sb->s_umount);
403
404 return ret;
405}
406
8ceffcb2
CY		 407static ssize_t f2fs_attr_show(struct kobject *kobj,
408 struct attribute *attr, char *buf)
409{
410 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
411 s_kobj);
412 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
413
414 return a->show ? a->show(a, sbi, buf) : 0;
415}
416
417static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
418 const char *buf, size_t len)
419{
420 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
421 s_kobj);
422 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
423
424 return a->store ? a->store(a, sbi, buf, len) : 0;
425}
426
427static void f2fs_sb_release(struct kobject *kobj)
428{
429 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
430 s_kobj);
431 complete(&sbi->s_kobj_unregister);
432}
433
bf9e697e
JK		 434enum feat_id {
435 FEAT_CRYPTO = 0,
436 FEAT_BLKZONED,
437 FEAT_ATOMIC_WRITE,
438 FEAT_EXTRA_ATTR,
439 FEAT_PROJECT_QUOTA,
440 FEAT_INODE_CHECKSUM,
6afc662e 441 FEAT_FLEXIBLE_INLINE_XATTR,
234a9689 442 FEAT_QUOTA_INO,
1c1d35df 443 FEAT_INODE_CRTIME,
b7c409de 444 FEAT_LOST_FOUND,
95ae251f 445 FEAT_VERITY,
d440c52d 446 FEAT_SB_CHECKSUM,
5aba5430 447 FEAT_CASEFOLD,
4c8ff709 448 FEAT_COMPRESSION,
bf9e697e
JK		 449};
450
451static ssize_t f2fs_feature_show(struct f2fs_attr *a,
452 struct f2fs_sb_info *sbi, char *buf)
453{
454 switch (a->id) {
455 case FEAT_CRYPTO:
456 case FEAT_BLKZONED:
457 case FEAT_ATOMIC_WRITE:
458 case FEAT_EXTRA_ATTR:
459 case FEAT_PROJECT_QUOTA:
460 case FEAT_INODE_CHECKSUM:
6afc662e 461 case FEAT_FLEXIBLE_INLINE_XATTR:
234a9689 462 case FEAT_QUOTA_INO:
1c1d35df 463 case FEAT_INODE_CRTIME:
b7c409de 464 case FEAT_LOST_FOUND:
95ae251f 465 case FEAT_VERITY:
d440c52d 466 case FEAT_SB_CHECKSUM:
5aba5430 467 case FEAT_CASEFOLD:
4c8ff709 468 case FEAT_COMPRESSION:
fc7100ea 469 return sprintf(buf, "supported\n");
bf9e697e
JK		 470 }
471 return 0;
472}
473
8ceffcb2
CY		 474#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
475static struct f2fs_attr f2fs_attr_##_name = { \
476 .attr = {.name = __stringify(_name), .mode = _mode }, \
477 .show = _show, \
478 .store = _store, \
479 .struct_type = _struct_type, \
480 .offset = _offset \
481}
482
483#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
484 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
485 f2fs_sbi_show, f2fs_sbi_store, \
486 offsetof(struct struct_name, elname))
487
488#define F2FS_GENERAL_RO_ATTR(name) \
489static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
490
bf9e697e
JK		 491#define F2FS_FEATURE_RO_ATTR(_name, _id) \
492static struct f2fs_attr f2fs_attr_##_name = { \
493 .attr = {.name = __stringify(_name), .mode = 0444 }, \
494 .show = f2fs_feature_show, \
495 .id = _id, \
496}
497
fc7100ea
HV		 498#define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \
499static struct f2fs_attr f2fs_attr_##_name = { \
500 .attr = {.name = __stringify(_name), .mode = 0444 }, \
501 .show = f2fs_sbi_show, \
502 .struct_type = _struct_type, \
503 .offset = offsetof(struct _struct_name, _elname), \
504}
505
d9872a69
JK		 506F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
507 urgent_sleep_time);
8ceffcb2
CY		 508F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
509F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
510F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
5b0e9539
JK		 511F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
512F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
8ceffcb2 513F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
a4db59ac 514F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, main_blkaddr, main_blkaddr);
8ceffcb2 515F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
969d1b18 516F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
daeb433e 517F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
8ceffcb2
CY		 518F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
519F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
520F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
521F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
853137ce 522F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks);
8ceffcb2 523F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
a2a12b67 524F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
8ceffcb2
CY		 525F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
526F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
527F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
528F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
34655575 529F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity);
8ceffcb2
CY		 530F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
531F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
532F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
a7d10cf3
ST		 533F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
534 interval_time[DISCARD_TIME]);
535F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
03f2c02d
JK		 536F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info,
537 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
b0af6d49 538F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
f6df8f23 539F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
1ad71a27 540F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
846ae671 541F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
8ceffcb2
CY		 542#ifdef CONFIG_F2FS_FAULT_INJECTION
543F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
544F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
545#endif
8f1572f7 546F2FS_GENERAL_RO_ATTR(dirty_segments);
fc7100ea 547F2FS_GENERAL_RO_ATTR(free_segments);
8ceffcb2 548F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
bf9e697e 549F2FS_GENERAL_RO_ATTR(features);
80d42145 550F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
4d3aed70 551F2FS_GENERAL_RO_ATTR(unusable);
5aba5430 552F2FS_GENERAL_RO_ATTR(encoding);
a7e679b5 553F2FS_GENERAL_RO_ATTR(mounted_time_sec);
fc7100ea
HV		 554#ifdef CONFIG_F2FS_STAT_FS
555F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count);
556F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count);
557F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count);
558F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc);
559F2FS_GENERAL_RO_ATTR(moved_blocks_background);
560F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
561F2FS_GENERAL_RO_ATTR(avg_vblocks);
562#endif
bf9e697e 563
643fa961 564#ifdef CONFIG_FS_ENCRYPTION
bf9e697e
JK		 565F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
566#endif
567#ifdef CONFIG_BLK_DEV_ZONED
568F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
569#endif
570F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
571F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
572F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
573F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
6afc662e 574F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
234a9689 575F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
1c1d35df 576F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
b7c409de 577F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
95ae251f
EB		 578#ifdef CONFIG_FS_VERITY
579F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY);
580#endif
d440c52d 581F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
5aba5430 582F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD);
9b6ed143 583#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709 584F2FS_FEATURE_RO_ATTR(compression, FEAT_COMPRESSION);
9b6ed143 585#endif
8ceffcb2
CY		 586
587#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
588static struct attribute *f2fs_attrs[] = {
d9872a69 589 ATTR_LIST(gc_urgent_sleep_time),
8ceffcb2
CY		 590 ATTR_LIST(gc_min_sleep_time),
591 ATTR_LIST(gc_max_sleep_time),
592 ATTR_LIST(gc_no_gc_sleep_time),
593 ATTR_LIST(gc_idle),
d9872a69 594 ATTR_LIST(gc_urgent),
8ceffcb2 595 ATTR_LIST(reclaim_segments),
a4db59ac 596 ATTR_LIST(main_blkaddr),
8ceffcb2 597 ATTR_LIST(max_small_discards),
969d1b18 598 ATTR_LIST(discard_granularity),
8ceffcb2
CY		 599 ATTR_LIST(batched_trim_sections),
600 ATTR_LIST(ipu_policy),
601 ATTR_LIST(min_ipu_util),
602 ATTR_LIST(min_fsync_blocks),
853137ce 603 ATTR_LIST(min_seq_blocks),
8ceffcb2 604 ATTR_LIST(min_hot_blocks),
a2a12b67 605 ATTR_LIST(min_ssr_sections),
8ceffcb2 606 ATTR_LIST(max_victim_search),
34655575 607 ATTR_LIST(migration_granularity),
8ceffcb2
CY		 608 ATTR_LIST(dir_level),
609 ATTR_LIST(ram_thresh),
610 ATTR_LIST(ra_nid_pages),
611 ATTR_LIST(dirty_nats_ratio),
612 ATTR_LIST(cp_interval),
613 ATTR_LIST(idle_interval),
a7d10cf3
ST		 614 ATTR_LIST(discard_idle_interval),
615 ATTR_LIST(gc_idle_interval),
03f2c02d 616 ATTR_LIST(umount_discard_timeout),
b0af6d49 617 ATTR_LIST(iostat_enable),
f6df8f23 618 ATTR_LIST(readdir_ra),
1ad71a27 619 ATTR_LIST(gc_pin_file_thresh),
846ae671 620 ATTR_LIST(extension_list),
8ceffcb2
CY		 621#ifdef CONFIG_F2FS_FAULT_INJECTION
622 ATTR_LIST(inject_rate),
623 ATTR_LIST(inject_type),
624#endif
8f1572f7 625 ATTR_LIST(dirty_segments),
fc7100ea 626 ATTR_LIST(free_segments),
4d3aed70 627 ATTR_LIST(unusable),
8ceffcb2 628 ATTR_LIST(lifetime_write_kbytes),
bf9e697e 629 ATTR_LIST(features),
daeb433e 630 ATTR_LIST(reserved_blocks),
80d42145 631 ATTR_LIST(current_reserved_blocks),
5aba5430 632 ATTR_LIST(encoding),
a7e679b5 633 ATTR_LIST(mounted_time_sec),
fc7100ea
HV		 634#ifdef CONFIG_F2FS_STAT_FS
635 ATTR_LIST(cp_foreground_calls),
636 ATTR_LIST(cp_background_calls),
637 ATTR_LIST(gc_foreground_calls),
638 ATTR_LIST(gc_background_calls),
639 ATTR_LIST(moved_blocks_foreground),
640 ATTR_LIST(moved_blocks_background),
641 ATTR_LIST(avg_vblocks),
642#endif
8ceffcb2
CY		 643 NULL,
644};
176ef3c4 645ATTRIBUTE_GROUPS(f2fs);
8ceffcb2 646
bf9e697e 647static struct attribute *f2fs_feat_attrs[] = {
643fa961 648#ifdef CONFIG_FS_ENCRYPTION
bf9e697e
JK		 649 ATTR_LIST(encryption),
650#endif
651#ifdef CONFIG_BLK_DEV_ZONED
652 ATTR_LIST(block_zoned),
653#endif
654 ATTR_LIST(atomic_write),
655 ATTR_LIST(extra_attr),
656 ATTR_LIST(project_quota),
657 ATTR_LIST(inode_checksum),
6afc662e 658 ATTR_LIST(flexible_inline_xattr),
234a9689 659 ATTR_LIST(quota_ino),
1c1d35df 660 ATTR_LIST(inode_crtime),
b7c409de 661 ATTR_LIST(lost_found),
95ae251f
EB		 662#ifdef CONFIG_FS_VERITY
663 ATTR_LIST(verity),
664#endif
d440c52d 665 ATTR_LIST(sb_checksum),
5aba5430 666 ATTR_LIST(casefold),
9b6ed143 667#ifdef CONFIG_F2FS_FS_COMPRESSION
4c8ff709 668 ATTR_LIST(compression),
9b6ed143 669#endif
bf9e697e
JK		 670 NULL,
671};
176ef3c4 672ATTRIBUTE_GROUPS(f2fs_feat);
bf9e697e 673
8ceffcb2
CY		 674static const struct sysfs_ops f2fs_attr_ops = {
675 .show = f2fs_attr_show,
676 .store = f2fs_attr_store,
677};
678
bf9e697e 679static struct kobj_type f2fs_sb_ktype = {
176ef3c4 680 .default_groups = f2fs_groups,
8ceffcb2
CY		 681 .sysfs_ops = &f2fs_attr_ops,
682 .release = f2fs_sb_release,
683};
684
bf9e697e
JK		 685static struct kobj_type f2fs_ktype = {
686 .sysfs_ops = &f2fs_attr_ops,
687};
688
689static struct kset f2fs_kset = {
690 .kobj = {.ktype = &f2fs_ktype},
691};
692
693static struct kobj_type f2fs_feat_ktype = {
176ef3c4 694 .default_groups = f2fs_feat_groups,
bf9e697e
JK		 695 .sysfs_ops = &f2fs_attr_ops,
696};
697
698static struct kobject f2fs_feat = {
699 .kset = &f2fs_kset,
700};
701
cb15d1e4
RD		 702static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
703 void *offset)
8ceffcb2
CY		 704{
705 struct super_block *sb = seq->private;
706 struct f2fs_sb_info *sbi = F2FS_SB(sb);
707 unsigned int total_segs =
708 le32_to_cpu(sbi->raw_super->segment_count_main);
709 int i;
710
711 seq_puts(seq, "format: segment_type|valid_blocks\n"
712 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
713
714 for (i = 0; i < total_segs; i++) {
715 struct seg_entry *se = get_seg_entry(sbi, i);
716
717 if ((i % 10) == 0)
718 seq_printf(seq, "%-10d", i);
8740edc3 719 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
8ceffcb2
CY		 720 if ((i % 10) == 9 || i == (total_segs - 1))
721 seq_putc(seq, '\n');
722 else
723 seq_putc(seq, ' ');
724 }
725
726 return 0;
727}
728
cb15d1e4
RD		 729static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
730 void *offset)
8ceffcb2
CY		 731{
732 struct super_block *sb = seq->private;
733 struct f2fs_sb_info *sbi = F2FS_SB(sb);
734 unsigned int total_segs =
735 le32_to_cpu(sbi->raw_super->segment_count_main);
736 int i, j;
737
738 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
739 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
740
741 for (i = 0; i < total_segs; i++) {
742 struct seg_entry *se = get_seg_entry(sbi, i);
743
744 seq_printf(seq, "%-10d", i);
8740edc3 745 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
8ceffcb2
CY		 746 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
747 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
748 seq_putc(seq, '\n');
749 }
750 return 0;
751}
752
cb15d1e4
RD		 753static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
754 void *offset)
b0af6d49
CY		 755{
756 struct super_block *sb = seq->private;
757 struct f2fs_sb_info *sbi = F2FS_SB(sb);
758 time64_t now = ktime_get_real_seconds();
759
760 if (!sbi->iostat_enable)
761 return 0;
762
763 seq_printf(seq, "time: %-16llu\n", now);
764
765 /* print app IOs */
766 seq_printf(seq, "app buffered: %-16llu\n",
767 sbi->write_iostat[APP_BUFFERED_IO]);
768 seq_printf(seq, "app direct: %-16llu\n",
769 sbi->write_iostat[APP_DIRECT_IO]);
770 seq_printf(seq, "app mapped: %-16llu\n",
771 sbi->write_iostat[APP_MAPPED_IO]);
772
773 /* print fs IOs */
774 seq_printf(seq, "fs data: %-16llu\n",
775 sbi->write_iostat[FS_DATA_IO]);
776 seq_printf(seq, "fs node: %-16llu\n",
777 sbi->write_iostat[FS_NODE_IO]);
778 seq_printf(seq, "fs meta: %-16llu\n",
779 sbi->write_iostat[FS_META_IO]);
780 seq_printf(seq, "fs gc data: %-16llu\n",
781 sbi->write_iostat[FS_GC_DATA_IO]);
782 seq_printf(seq, "fs gc node: %-16llu\n",
783 sbi->write_iostat[FS_GC_NODE_IO]);
784 seq_printf(seq, "fs cp data: %-16llu\n",
785 sbi->write_iostat[FS_CP_DATA_IO]);
786 seq_printf(seq, "fs cp node: %-16llu\n",
787 sbi->write_iostat[FS_CP_NODE_IO]);
788 seq_printf(seq, "fs cp meta: %-16llu\n",
789 sbi->write_iostat[FS_CP_META_IO]);
790 seq_printf(seq, "fs discard: %-16llu\n",
791 sbi->write_iostat[FS_DISCARD]);
792
793 return 0;
794}
795
970e348d
YS		 796static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
797 void *offset)
798{
799 struct super_block *sb = seq->private;
800 struct f2fs_sb_info *sbi = F2FS_SB(sb);
801 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
802 int i;
803
804 seq_puts(seq, "format: victim_secmap bitmaps\n");
805
806 for (i = 0; i < MAIN_SECS(sbi); i++) {
807 if ((i % 10) == 0)
808 seq_printf(seq, "%-10d", i);
809 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
810 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
811 seq_putc(seq, '\n');
812 else
813 seq_putc(seq, ' ');
814 }
815 return 0;
816}
817
dc6b2055 818int __init f2fs_init_sysfs(void)
8ceffcb2 819{
bf9e697e 820 int ret;
8ceffcb2 821
bf9e697e
JK		 822 kobject_set_name(&f2fs_kset.kobj, "f2fs");
823 f2fs_kset.kobj.parent = fs_kobj;
824 ret = kset_register(&f2fs_kset);
825 if (ret)
826 return ret;
827
828 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
829 NULL, "features");
fe396ad8
CY		 830 if (ret) {
831 kobject_put(&f2fs_feat);
bf9e697e 832 kset_unregister(&f2fs_kset);
fe396ad8 833 } else {
bf9e697e 834 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
fe396ad8 835 }
bf9e697e 836 return ret;
8ceffcb2
CY		 837}
838
dc6b2055 839void f2fs_exit_sysfs(void)
8ceffcb2 840{
bf9e697e
JK		 841 kobject_put(&f2fs_feat);
842 kset_unregister(&f2fs_kset);
8ceffcb2 843 remove_proc_entry("fs/f2fs", NULL);
bf9e697e 844 f2fs_proc_root = NULL;
8ceffcb2
CY		 845}
846
dc6b2055 847int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
8ceffcb2
CY		 848{
849 struct super_block *sb = sbi->sb;
850 int err;
851
bf9e697e
JK		 852 sbi->s_kobj.kset = &f2fs_kset;
853 init_completion(&sbi->s_kobj_unregister);
854 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
855 "%s", sb->s_id);
fe396ad8
CY		 856 if (err) {
857 kobject_put(&sbi->s_kobj);
858 wait_for_completion(&sbi->s_kobj_unregister);
bf9e697e 859 return err;
fe396ad8 860 }
bf9e697e 861
8ceffcb2
CY		 862 if (f2fs_proc_root)
863 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
864
865 if (sbi->s_proc) {
3f3942ac
CH		 866 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
867 segment_info_seq_show, sb);
868 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
869 segment_bits_seq_show, sb);
870 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
871 iostat_info_seq_show, sb);
970e348d
YS		 872 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc,
873 victim_bits_seq_show, sb);
8ceffcb2 874 }
8ceffcb2 875 return 0;
8ceffcb2
CY		 876}
877
dc6b2055 878void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
8ceffcb2 879{
8ceffcb2 880 if (sbi->s_proc) {
b0af6d49 881 remove_proc_entry("iostat_info", sbi->s_proc);
8ceffcb2
CY		 882 remove_proc_entry("segment_info", sbi->s_proc);
883 remove_proc_entry("segment_bits", sbi->s_proc);
970e348d 884 remove_proc_entry("victim_bits", sbi->s_proc);
8ceffcb2
CY		 885 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
886 }
bf9e697e 887 kobject_del(&sbi->s_kobj);
820d3667 888 kobject_put(&sbi->s_kobj);
8ceffcb2 889}
Linux 6.x block layer and io_uring tree(s)