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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
15#include "f2fs.h"
16#include "segment.h"
17#include "gc.h"
18
19static struct proc_dir_entry *f2fs_proc_root;
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 */
28#ifdef CONFIG_F2FS_FAULT_INJECTION
29 FAULT_INFO_RATE, /* struct f2fs_fault_info */
30 FAULT_INFO_TYPE, /* struct f2fs_fault_info */
31#endif
32 RESERVED_BLOCKS, /* struct f2fs_sb_info */
33};
34
35struct f2fs_attr {
36 struct attribute attr;
37 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *);
38 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *,
39 const char *, size_t);
40 int struct_type;
41 int offset;
42 int id;
43};
44
45static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
46{
47 if (struct_type == GC_THREAD)
48 return (unsigned char *)sbi->gc_thread;
49 else if (struct_type == SM_INFO)
50 return (unsigned char *)SM_I(sbi);
51 else if (struct_type == DCC_INFO)
52 return (unsigned char *)SM_I(sbi)->dcc_info;
53 else if (struct_type == NM_INFO)
54 return (unsigned char *)NM_I(sbi);
55 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
56 return (unsigned char *)sbi;
57#ifdef CONFIG_F2FS_FAULT_INJECTION
58 else if (struct_type == FAULT_INFO_RATE ||
59 struct_type == FAULT_INFO_TYPE)
60 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
61#endif
62 return NULL;
63}
64
65static ssize_t dirty_segments_show(struct f2fs_attr *a,
66 struct f2fs_sb_info *sbi, char *buf)
67{
68 return snprintf(buf, PAGE_SIZE, "%llu\n",
69 (unsigned long long)(dirty_segments(sbi)));
70}
71
72static ssize_t unusable_show(struct f2fs_attr *a,
73 struct f2fs_sb_info *sbi, char *buf)
74{
75 block_t unusable;
76
77 if (test_opt(sbi, DISABLE_CHECKPOINT))
78 unusable = sbi->unusable_block_count;
79 else
80 unusable = f2fs_get_unusable_blocks(sbi);
81 return snprintf(buf, PAGE_SIZE, "%llu\n",
82 (unsigned long long)unusable);
83}
84
85static ssize_t encoding_show(struct f2fs_attr *a,
86 struct f2fs_sb_info *sbi, char *buf)
87{
88#ifdef CONFIG_UNICODE
89 if (f2fs_sb_has_casefold(sbi))
90 return snprintf(buf, PAGE_SIZE, "%s (%d.%d.%d)\n",
91 sbi->s_encoding->charset,
92 (sbi->s_encoding->version >> 16) & 0xff,
93 (sbi->s_encoding->version >> 8) & 0xff,
94 sbi->s_encoding->version & 0xff);
95#endif
96 return snprintf(buf, PAGE_SIZE, "(none)");
97}
98
99static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
100 struct f2fs_sb_info *sbi, char *buf)
101{
102 struct super_block *sb = sbi->sb;
103
104 if (!sb->s_bdev->bd_part)
105 return snprintf(buf, PAGE_SIZE, "0\n");
106
107 return snprintf(buf, PAGE_SIZE, "%llu\n",
108 (unsigned long long)(sbi->kbytes_written +
109 BD_PART_WRITTEN(sbi)));
110}
111
112static ssize_t features_show(struct f2fs_attr *a,
113 struct f2fs_sb_info *sbi, char *buf)
114{
115 struct super_block *sb = sbi->sb;
116 int len = 0;
117
118 if (!sb->s_bdev->bd_part)
119 return snprintf(buf, PAGE_SIZE, "0\n");
120
121 if (f2fs_sb_has_encrypt(sbi))
122 len += snprintf(buf, PAGE_SIZE - len, "%s",
123 "encryption");
124 if (f2fs_sb_has_blkzoned(sbi))
125 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
126 len ? ", " : "", "blkzoned");
127 if (f2fs_sb_has_extra_attr(sbi))
128 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
129 len ? ", " : "", "extra_attr");
130 if (f2fs_sb_has_project_quota(sbi))
131 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
132 len ? ", " : "", "projquota");
133 if (f2fs_sb_has_inode_chksum(sbi))
134 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
135 len ? ", " : "", "inode_checksum");
136 if (f2fs_sb_has_flexible_inline_xattr(sbi))
137 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
138 len ? ", " : "", "flexible_inline_xattr");
139 if (f2fs_sb_has_quota_ino(sbi))
140 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
141 len ? ", " : "", "quota_ino");
142 if (f2fs_sb_has_inode_crtime(sbi))
143 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
144 len ? ", " : "", "inode_crtime");
145 if (f2fs_sb_has_lost_found(sbi))
146 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
147 len ? ", " : "", "lost_found");
148 if (f2fs_sb_has_verity(sbi))
149 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
150 len ? ", " : "", "verity");
151 if (f2fs_sb_has_sb_chksum(sbi))
152 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
153 len ? ", " : "", "sb_checksum");
154 if (f2fs_sb_has_casefold(sbi))
155 len += snprintf(buf + len, PAGE_SIZE - len, "%s%s",
156 len ? ", " : "", "casefold");
157 len += snprintf(buf + len, PAGE_SIZE - len, "\n");
158 return len;
159}
160
161static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
162 struct f2fs_sb_info *sbi, char *buf)
163{
164 return snprintf(buf, PAGE_SIZE, "%u\n", sbi->current_reserved_blocks);
165}
166
167static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
168 struct f2fs_sb_info *sbi, char *buf)
169{
170 unsigned char *ptr = NULL;
171 unsigned int *ui;
172
173 ptr = __struct_ptr(sbi, a->struct_type);
174 if (!ptr)
175 return -EINVAL;
176
177 if (!strcmp(a->attr.name, "extension_list")) {
178 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
179 sbi->raw_super->extension_list;
180 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
181 int hot_count = sbi->raw_super->hot_ext_count;
182 int len = 0, i;
183
184 len += snprintf(buf + len, PAGE_SIZE - len,
185 "cold file extension:\n");
186 for (i = 0; i < cold_count; i++)
187 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
188 extlist[i]);
189
190 len += snprintf(buf + len, PAGE_SIZE - len,
191 "hot file extension:\n");
192 for (i = cold_count; i < cold_count + hot_count; i++)
193 len += snprintf(buf + len, PAGE_SIZE - len, "%s\n",
194 extlist[i]);
195 return len;
196 }
197
198 ui = (unsigned int *)(ptr + a->offset);
199
200 return snprintf(buf, PAGE_SIZE, "%u\n", *ui);
201}
202
203static ssize_t __sbi_store(struct f2fs_attr *a,
204 struct f2fs_sb_info *sbi,
205 const char *buf, size_t count)
206{
207 unsigned char *ptr;
208 unsigned long t;
209 unsigned int *ui;
210 ssize_t ret;
211
212 ptr = __struct_ptr(sbi, a->struct_type);
213 if (!ptr)
214 return -EINVAL;
215
216 if (!strcmp(a->attr.name, "extension_list")) {
217 const char *name = strim((char *)buf);
218 bool set = true, hot;
219
220 if (!strncmp(name, "[h]", 3))
221 hot = true;
222 else if (!strncmp(name, "[c]", 3))
223 hot = false;
224 else
225 return -EINVAL;
226
227 name += 3;
228
229 if (*name == '!') {
230 name++;
231 set = false;
232 }
233
234 if (strlen(name) >= F2FS_EXTENSION_LEN)
235 return -EINVAL;
236
237 down_write(&sbi->sb_lock);
238
239 ret = f2fs_update_extension_list(sbi, name, hot, set);
240 if (ret)
241 goto out;
242
243 ret = f2fs_commit_super(sbi, false);
244 if (ret)
245 f2fs_update_extension_list(sbi, name, hot, !set);
246out:
247 up_write(&sbi->sb_lock);
248 return ret ? ret : count;
249 }
250
251 ui = (unsigned int *)(ptr + a->offset);
252
253 ret = kstrtoul(skip_spaces(buf), 0, &t);
254 if (ret < 0)
255 return ret;
256#ifdef CONFIG_F2FS_FAULT_INJECTION
257 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX))
258 return -EINVAL;
259 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
260 return -EINVAL;
261#endif
262 if (a->struct_type == RESERVED_BLOCKS) {
263 spin_lock(&sbi->stat_lock);
264 if (t > (unsigned long)(sbi->user_block_count -
265 F2FS_OPTION(sbi).root_reserved_blocks)) {
266 spin_unlock(&sbi->stat_lock);
267 return -EINVAL;
268 }
269 *ui = t;
270 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
271 sbi->user_block_count - valid_user_blocks(sbi));
272 spin_unlock(&sbi->stat_lock);
273 return count;
274 }
275
276 if (!strcmp(a->attr.name, "discard_granularity")) {
277 if (t == 0 || t > MAX_PLIST_NUM)
278 return -EINVAL;
279 if (t == *ui)
280 return count;
281 *ui = t;
282 return count;
283 }
284
285 if (!strcmp(a->attr.name, "migration_granularity")) {
286 if (t == 0 || t > sbi->segs_per_sec)
287 return -EINVAL;
288 }
289
290 if (!strcmp(a->attr.name, "trim_sections"))
291 return -EINVAL;
292
293 if (!strcmp(a->attr.name, "gc_urgent")) {
294 if (t >= 1) {
295 sbi->gc_mode = GC_URGENT;
296 if (sbi->gc_thread) {
297 sbi->gc_thread->gc_wake = 1;
298 wake_up_interruptible_all(
299 &sbi->gc_thread->gc_wait_queue_head);
300 wake_up_discard_thread(sbi, true);
301 }
302 } else {
303 sbi->gc_mode = GC_NORMAL;
304 }
305 return count;
306 }
307 if (!strcmp(a->attr.name, "gc_idle")) {
308 if (t == GC_IDLE_CB)
309 sbi->gc_mode = GC_IDLE_CB;
310 else if (t == GC_IDLE_GREEDY)
311 sbi->gc_mode = GC_IDLE_GREEDY;
312 else
313 sbi->gc_mode = GC_NORMAL;
314 return count;
315 }
316
317
318 if (!strcmp(a->attr.name, "iostat_enable")) {
319 sbi->iostat_enable = !!t;
320 if (!sbi->iostat_enable)
321 f2fs_reset_iostat(sbi);
322 return count;
323 }
324
325 *ui = (unsigned int)t;
326
327 return count;
328}
329
330static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
331 struct f2fs_sb_info *sbi,
332 const char *buf, size_t count)
333{
334 ssize_t ret;
335 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
336 a->struct_type == GC_THREAD);
337
338 if (gc_entry) {
339 if (!down_read_trylock(&sbi->sb->s_umount))
340 return -EAGAIN;
341 }
342 ret = __sbi_store(a, sbi, buf, count);
343 if (gc_entry)
344 up_read(&sbi->sb->s_umount);
345
346 return ret;
347}
348
349static ssize_t f2fs_attr_show(struct kobject *kobj,
350 struct attribute *attr, char *buf)
351{
352 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
353 s_kobj);
354 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
355
356 return a->show ? a->show(a, sbi, buf) : 0;
357}
358
359static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
360 const char *buf, size_t len)
361{
362 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
363 s_kobj);
364 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
365
366 return a->store ? a->store(a, sbi, buf, len) : 0;
367}
368
369static void f2fs_sb_release(struct kobject *kobj)
370{
371 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
372 s_kobj);
373 complete(&sbi->s_kobj_unregister);
374}
375
376enum feat_id {
377 FEAT_CRYPTO = 0,
378 FEAT_BLKZONED,
379 FEAT_ATOMIC_WRITE,
380 FEAT_EXTRA_ATTR,
381 FEAT_PROJECT_QUOTA,
382 FEAT_INODE_CHECKSUM,
383 FEAT_FLEXIBLE_INLINE_XATTR,
384 FEAT_QUOTA_INO,
385 FEAT_INODE_CRTIME,
386 FEAT_LOST_FOUND,
387 FEAT_VERITY,
388 FEAT_SB_CHECKSUM,
389 FEAT_CASEFOLD,
390};
391
392static ssize_t f2fs_feature_show(struct f2fs_attr *a,
393 struct f2fs_sb_info *sbi, char *buf)
394{
395 switch (a->id) {
396 case FEAT_CRYPTO:
397 case FEAT_BLKZONED:
398 case FEAT_ATOMIC_WRITE:
399 case FEAT_EXTRA_ATTR:
400 case FEAT_PROJECT_QUOTA:
401 case FEAT_INODE_CHECKSUM:
402 case FEAT_FLEXIBLE_INLINE_XATTR:
403 case FEAT_QUOTA_INO:
404 case FEAT_INODE_CRTIME:
405 case FEAT_LOST_FOUND:
406 case FEAT_VERITY:
407 case FEAT_SB_CHECKSUM:
408 case FEAT_CASEFOLD:
409 return snprintf(buf, PAGE_SIZE, "supported\n");
410 }
411 return 0;
412}
413
414#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
415static struct f2fs_attr f2fs_attr_##_name = { \
416 .attr = {.name = __stringify(_name), .mode = _mode }, \
417 .show = _show, \
418 .store = _store, \
419 .struct_type = _struct_type, \
420 .offset = _offset \
421}
422
423#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
424 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
425 f2fs_sbi_show, f2fs_sbi_store, \
426 offsetof(struct struct_name, elname))
427
428#define F2FS_GENERAL_RO_ATTR(name) \
429static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
430
431#define F2FS_FEATURE_RO_ATTR(_name, _id) \
432static struct f2fs_attr f2fs_attr_##_name = { \
433 .attr = {.name = __stringify(_name), .mode = 0444 }, \
434 .show = f2fs_feature_show, \
435 .id = _id, \
436}
437
438F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time,
439 urgent_sleep_time);
440F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time);
441F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time);
442F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time);
443F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode);
444F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode);
445F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments);
446F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards);
447F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity);
448F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks);
449F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections);
450F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy);
451F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util);
452F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks);
453F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks);
454F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks);
455F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections);
456F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh);
457F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages);
458F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio);
459F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search);
460F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity);
461F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level);
462F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]);
463F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]);
464F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval,
465 interval_time[DISCARD_TIME]);
466F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]);
467F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info,
468 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
469F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable);
470F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra);
471F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold);
472F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
473#ifdef CONFIG_F2FS_FAULT_INJECTION
474F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate);
475F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type);
476#endif
477F2FS_GENERAL_RO_ATTR(dirty_segments);
478F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
479F2FS_GENERAL_RO_ATTR(features);
480F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
481F2FS_GENERAL_RO_ATTR(unusable);
482F2FS_GENERAL_RO_ATTR(encoding);
483
484#ifdef CONFIG_FS_ENCRYPTION
485F2FS_FEATURE_RO_ATTR(encryption, FEAT_CRYPTO);
486#endif
487#ifdef CONFIG_BLK_DEV_ZONED
488F2FS_FEATURE_RO_ATTR(block_zoned, FEAT_BLKZONED);
489#endif
490F2FS_FEATURE_RO_ATTR(atomic_write, FEAT_ATOMIC_WRITE);
491F2FS_FEATURE_RO_ATTR(extra_attr, FEAT_EXTRA_ATTR);
492F2FS_FEATURE_RO_ATTR(project_quota, FEAT_PROJECT_QUOTA);
493F2FS_FEATURE_RO_ATTR(inode_checksum, FEAT_INODE_CHECKSUM);
494F2FS_FEATURE_RO_ATTR(flexible_inline_xattr, FEAT_FLEXIBLE_INLINE_XATTR);
495F2FS_FEATURE_RO_ATTR(quota_ino, FEAT_QUOTA_INO);
496F2FS_FEATURE_RO_ATTR(inode_crtime, FEAT_INODE_CRTIME);
497F2FS_FEATURE_RO_ATTR(lost_found, FEAT_LOST_FOUND);
498#ifdef CONFIG_FS_VERITY
499F2FS_FEATURE_RO_ATTR(verity, FEAT_VERITY);
500#endif
501F2FS_FEATURE_RO_ATTR(sb_checksum, FEAT_SB_CHECKSUM);
502F2FS_FEATURE_RO_ATTR(casefold, FEAT_CASEFOLD);
503
504#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
505static struct attribute *f2fs_attrs[] = {
506 ATTR_LIST(gc_urgent_sleep_time),
507 ATTR_LIST(gc_min_sleep_time),
508 ATTR_LIST(gc_max_sleep_time),
509 ATTR_LIST(gc_no_gc_sleep_time),
510 ATTR_LIST(gc_idle),
511 ATTR_LIST(gc_urgent),
512 ATTR_LIST(reclaim_segments),
513 ATTR_LIST(max_small_discards),
514 ATTR_LIST(discard_granularity),
515 ATTR_LIST(batched_trim_sections),
516 ATTR_LIST(ipu_policy),
517 ATTR_LIST(min_ipu_util),
518 ATTR_LIST(min_fsync_blocks),
519 ATTR_LIST(min_seq_blocks),
520 ATTR_LIST(min_hot_blocks),
521 ATTR_LIST(min_ssr_sections),
522 ATTR_LIST(max_victim_search),
523 ATTR_LIST(migration_granularity),
524 ATTR_LIST(dir_level),
525 ATTR_LIST(ram_thresh),
526 ATTR_LIST(ra_nid_pages),
527 ATTR_LIST(dirty_nats_ratio),
528 ATTR_LIST(cp_interval),
529 ATTR_LIST(idle_interval),
530 ATTR_LIST(discard_idle_interval),
531 ATTR_LIST(gc_idle_interval),
532 ATTR_LIST(umount_discard_timeout),
533 ATTR_LIST(iostat_enable),
534 ATTR_LIST(readdir_ra),
535 ATTR_LIST(gc_pin_file_thresh),
536 ATTR_LIST(extension_list),
537#ifdef CONFIG_F2FS_FAULT_INJECTION
538 ATTR_LIST(inject_rate),
539 ATTR_LIST(inject_type),
540#endif
541 ATTR_LIST(dirty_segments),
542 ATTR_LIST(unusable),
543 ATTR_LIST(lifetime_write_kbytes),
544 ATTR_LIST(features),
545 ATTR_LIST(reserved_blocks),
546 ATTR_LIST(current_reserved_blocks),
547 ATTR_LIST(encoding),
548 NULL,
549};
550ATTRIBUTE_GROUPS(f2fs);
551
552static struct attribute *f2fs_feat_attrs[] = {
553#ifdef CONFIG_FS_ENCRYPTION
554 ATTR_LIST(encryption),
555#endif
556#ifdef CONFIG_BLK_DEV_ZONED
557 ATTR_LIST(block_zoned),
558#endif
559 ATTR_LIST(atomic_write),
560 ATTR_LIST(extra_attr),
561 ATTR_LIST(project_quota),
562 ATTR_LIST(inode_checksum),
563 ATTR_LIST(flexible_inline_xattr),
564 ATTR_LIST(quota_ino),
565 ATTR_LIST(inode_crtime),
566 ATTR_LIST(lost_found),
567#ifdef CONFIG_FS_VERITY
568 ATTR_LIST(verity),
569#endif
570 ATTR_LIST(sb_checksum),
571 ATTR_LIST(casefold),
572 NULL,
573};
574ATTRIBUTE_GROUPS(f2fs_feat);
575
576static const struct sysfs_ops f2fs_attr_ops = {
577 .show = f2fs_attr_show,
578 .store = f2fs_attr_store,
579};
580
581static struct kobj_type f2fs_sb_ktype = {
582 .default_groups = f2fs_groups,
583 .sysfs_ops = &f2fs_attr_ops,
584 .release = f2fs_sb_release,
585};
586
587static struct kobj_type f2fs_ktype = {
588 .sysfs_ops = &f2fs_attr_ops,
589};
590
591static struct kset f2fs_kset = {
592 .kobj = {.ktype = &f2fs_ktype},
593};
594
595static struct kobj_type f2fs_feat_ktype = {
596 .default_groups = f2fs_feat_groups,
597 .sysfs_ops = &f2fs_attr_ops,
598};
599
600static struct kobject f2fs_feat = {
601 .kset = &f2fs_kset,
602};
603
604static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
605 void *offset)
606{
607 struct super_block *sb = seq->private;
608 struct f2fs_sb_info *sbi = F2FS_SB(sb);
609 unsigned int total_segs =
610 le32_to_cpu(sbi->raw_super->segment_count_main);
611 int i;
612
613 seq_puts(seq, "format: segment_type|valid_blocks\n"
614 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
615
616 for (i = 0; i < total_segs; i++) {
617 struct seg_entry *se = get_seg_entry(sbi, i);
618
619 if ((i % 10) == 0)
620 seq_printf(seq, "%-10d", i);
621 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
622 if ((i % 10) == 9 || i == (total_segs - 1))
623 seq_putc(seq, '\n');
624 else
625 seq_putc(seq, ' ');
626 }
627
628 return 0;
629}
630
631static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
632 void *offset)
633{
634 struct super_block *sb = seq->private;
635 struct f2fs_sb_info *sbi = F2FS_SB(sb);
636 unsigned int total_segs =
637 le32_to_cpu(sbi->raw_super->segment_count_main);
638 int i, j;
639
640 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
641 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
642
643 for (i = 0; i < total_segs; i++) {
644 struct seg_entry *se = get_seg_entry(sbi, i);
645
646 seq_printf(seq, "%-10d", i);
647 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
648 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
649 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
650 seq_putc(seq, '\n');
651 }
652 return 0;
653}
654
655static int __maybe_unused iostat_info_seq_show(struct seq_file *seq,
656 void *offset)
657{
658 struct super_block *sb = seq->private;
659 struct f2fs_sb_info *sbi = F2FS_SB(sb);
660 time64_t now = ktime_get_real_seconds();
661
662 if (!sbi->iostat_enable)
663 return 0;
664
665 seq_printf(seq, "time: %-16llu\n", now);
666
667 /* print app IOs */
668 seq_printf(seq, "app buffered: %-16llu\n",
669 sbi->write_iostat[APP_BUFFERED_IO]);
670 seq_printf(seq, "app direct: %-16llu\n",
671 sbi->write_iostat[APP_DIRECT_IO]);
672 seq_printf(seq, "app mapped: %-16llu\n",
673 sbi->write_iostat[APP_MAPPED_IO]);
674
675 /* print fs IOs */
676 seq_printf(seq, "fs data: %-16llu\n",
677 sbi->write_iostat[FS_DATA_IO]);
678 seq_printf(seq, "fs node: %-16llu\n",
679 sbi->write_iostat[FS_NODE_IO]);
680 seq_printf(seq, "fs meta: %-16llu\n",
681 sbi->write_iostat[FS_META_IO]);
682 seq_printf(seq, "fs gc data: %-16llu\n",
683 sbi->write_iostat[FS_GC_DATA_IO]);
684 seq_printf(seq, "fs gc node: %-16llu\n",
685 sbi->write_iostat[FS_GC_NODE_IO]);
686 seq_printf(seq, "fs cp data: %-16llu\n",
687 sbi->write_iostat[FS_CP_DATA_IO]);
688 seq_printf(seq, "fs cp node: %-16llu\n",
689 sbi->write_iostat[FS_CP_NODE_IO]);
690 seq_printf(seq, "fs cp meta: %-16llu\n",
691 sbi->write_iostat[FS_CP_META_IO]);
692 seq_printf(seq, "fs discard: %-16llu\n",
693 sbi->write_iostat[FS_DISCARD]);
694
695 return 0;
696}
697
698static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
699 void *offset)
700{
701 struct super_block *sb = seq->private;
702 struct f2fs_sb_info *sbi = F2FS_SB(sb);
703 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
704 int i;
705
706 seq_puts(seq, "format: victim_secmap bitmaps\n");
707
708 for (i = 0; i < MAIN_SECS(sbi); i++) {
709 if ((i % 10) == 0)
710 seq_printf(seq, "%-10d", i);
711 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
712 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
713 seq_putc(seq, '\n');
714 else
715 seq_putc(seq, ' ');
716 }
717 return 0;
718}
719
720int __init f2fs_init_sysfs(void)
721{
722 int ret;
723
724 kobject_set_name(&f2fs_kset.kobj, "f2fs");
725 f2fs_kset.kobj.parent = fs_kobj;
726 ret = kset_register(&f2fs_kset);
727 if (ret)
728 return ret;
729
730 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
731 NULL, "features");
732 if (ret)
733 kset_unregister(&f2fs_kset);
734 else
735 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
736 return ret;
737}
738
739void f2fs_exit_sysfs(void)
740{
741 kobject_put(&f2fs_feat);
742 kset_unregister(&f2fs_kset);
743 remove_proc_entry("fs/f2fs", NULL);
744 f2fs_proc_root = NULL;
745}
746
747int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
748{
749 struct super_block *sb = sbi->sb;
750 int err;
751
752 sbi->s_kobj.kset = &f2fs_kset;
753 init_completion(&sbi->s_kobj_unregister);
754 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
755 "%s", sb->s_id);
756 if (err)
757 return err;
758
759 if (f2fs_proc_root)
760 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
761
762 if (sbi->s_proc) {
763 proc_create_single_data("segment_info", S_IRUGO, sbi->s_proc,
764 segment_info_seq_show, sb);
765 proc_create_single_data("segment_bits", S_IRUGO, sbi->s_proc,
766 segment_bits_seq_show, sb);
767 proc_create_single_data("iostat_info", S_IRUGO, sbi->s_proc,
768 iostat_info_seq_show, sb);
769 proc_create_single_data("victim_bits", S_IRUGO, sbi->s_proc,
770 victim_bits_seq_show, sb);
771 }
772 return 0;
773}
774
775void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
776{
777 if (sbi->s_proc) {
778 remove_proc_entry("iostat_info", sbi->s_proc);
779 remove_proc_entry("segment_info", sbi->s_proc);
780 remove_proc_entry("segment_bits", sbi->s_proc);
781 remove_proc_entry("victim_bits", sbi->s_proc);
782 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root);
783 }
784 kobject_del(&sbi->s_kobj);
785}
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
23static struct proc_dir_entry *f2fs_proc_root;
24
25/* Sysfs support for f2fs */
26enum {
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
44static 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
54struct 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
64static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
65 struct f2fs_sb_info *sbi, char *buf);
66
67static 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
95static 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
102static 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
109static 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
116static 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
125static 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
131static 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
137static 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
146static 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
155static 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
164static 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
173static ssize_t gc_mode_show(struct f2fs_attr *a,
174 struct f2fs_sb_info *sbi, char *buf)
175{
176 return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]);
177}
178
179static ssize_t features_show(struct f2fs_attr *a,
180 struct f2fs_sb_info *sbi, char *buf)
181{
182 int len = 0;
183
184 if (f2fs_sb_has_encrypt(sbi))
185 len += scnprintf(buf, PAGE_SIZE - len, "%s",
186 "encryption");
187 if (f2fs_sb_has_blkzoned(sbi))
188 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
189 len ? ", " : "", "blkzoned");
190 if (f2fs_sb_has_extra_attr(sbi))
191 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
192 len ? ", " : "", "extra_attr");
193 if (f2fs_sb_has_project_quota(sbi))
194 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
195 len ? ", " : "", "projquota");
196 if (f2fs_sb_has_inode_chksum(sbi))
197 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
198 len ? ", " : "", "inode_checksum");
199 if (f2fs_sb_has_flexible_inline_xattr(sbi))
200 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
201 len ? ", " : "", "flexible_inline_xattr");
202 if (f2fs_sb_has_quota_ino(sbi))
203 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
204 len ? ", " : "", "quota_ino");
205 if (f2fs_sb_has_inode_crtime(sbi))
206 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
207 len ? ", " : "", "inode_crtime");
208 if (f2fs_sb_has_lost_found(sbi))
209 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
210 len ? ", " : "", "lost_found");
211 if (f2fs_sb_has_verity(sbi))
212 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
213 len ? ", " : "", "verity");
214 if (f2fs_sb_has_sb_chksum(sbi))
215 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
216 len ? ", " : "", "sb_checksum");
217 if (f2fs_sb_has_casefold(sbi))
218 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
219 len ? ", " : "", "casefold");
220 if (f2fs_sb_has_readonly(sbi))
221 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
222 len ? ", " : "", "readonly");
223 if (f2fs_sb_has_compression(sbi))
224 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
225 len ? ", " : "", "compression");
226 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s",
227 len ? ", " : "", "pin_file");
228 len += scnprintf(buf + len, PAGE_SIZE - len, "\n");
229 return len;
230}
231
232static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
233 struct f2fs_sb_info *sbi, char *buf)
234{
235 return sysfs_emit(buf, "%u\n", sbi->current_reserved_blocks);
236}
237
238static ssize_t unusable_show(struct f2fs_attr *a,
239 struct f2fs_sb_info *sbi, char *buf)
240{
241 block_t unusable;
242
243 if (test_opt(sbi, DISABLE_CHECKPOINT))
244 unusable = sbi->unusable_block_count;
245 else
246 unusable = f2fs_get_unusable_blocks(sbi);
247 return sysfs_emit(buf, "%llu\n", (unsigned long long)unusable);
248}
249
250static ssize_t encoding_show(struct f2fs_attr *a,
251 struct f2fs_sb_info *sbi, char *buf)
252{
253#if IS_ENABLED(CONFIG_UNICODE)
254 struct super_block *sb = sbi->sb;
255
256 if (f2fs_sb_has_casefold(sbi))
257 return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n",
258 (sb->s_encoding->version >> 16) & 0xff,
259 (sb->s_encoding->version >> 8) & 0xff,
260 sb->s_encoding->version & 0xff);
261#endif
262 return sysfs_emit(buf, "(none)\n");
263}
264
265static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
266 struct f2fs_sb_info *sbi, char *buf)
267{
268 return sysfs_emit(buf, "%llu\n", SIT_I(sbi)->mounted_time);
269}
270
271#ifdef CONFIG_F2FS_STAT_FS
272static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
273 struct f2fs_sb_info *sbi, char *buf)
274{
275 struct f2fs_stat_info *si = F2FS_STAT(sbi);
276
277 return sysfs_emit(buf, "%llu\n",
278 (unsigned long long)(si->tot_blks -
279 (si->bg_data_blks + si->bg_node_blks)));
280}
281
282static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
283 struct f2fs_sb_info *sbi, char *buf)
284{
285 struct f2fs_stat_info *si = F2FS_STAT(sbi);
286
287 return sysfs_emit(buf, "%llu\n",
288 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
289}
290
291static ssize_t avg_vblocks_show(struct f2fs_attr *a,
292 struct f2fs_sb_info *sbi, char *buf)
293{
294 struct f2fs_stat_info *si = F2FS_STAT(sbi);
295
296 si->dirty_count = dirty_segments(sbi);
297 f2fs_update_sit_info(sbi);
298 return sysfs_emit(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
299}
300#endif
301
302static ssize_t main_blkaddr_show(struct f2fs_attr *a,
303 struct f2fs_sb_info *sbi, char *buf)
304{
305 return sysfs_emit(buf, "%llu\n",
306 (unsigned long long)MAIN_BLKADDR(sbi));
307}
308
309static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
310 struct f2fs_sb_info *sbi, char *buf)
311{
312 unsigned char *ptr = NULL;
313 unsigned int *ui;
314
315 ptr = __struct_ptr(sbi, a->struct_type);
316 if (!ptr)
317 return -EINVAL;
318
319 if (!strcmp(a->attr.name, "extension_list")) {
320 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
321 sbi->raw_super->extension_list;
322 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
323 int hot_count = sbi->raw_super->hot_ext_count;
324 int len = 0, i;
325
326 len += scnprintf(buf + len, PAGE_SIZE - len,
327 "cold file extension:\n");
328 for (i = 0; i < cold_count; i++)
329 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
330 extlist[i]);
331
332 len += scnprintf(buf + len, PAGE_SIZE - len,
333 "hot file extension:\n");
334 for (i = cold_count; i < cold_count + hot_count; i++)
335 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n",
336 extlist[i]);
337 return len;
338 }
339
340 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
341 struct ckpt_req_control *cprc = &sbi->cprc_info;
342 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
343 int data = IOPRIO_PRIO_DATA(cprc->ckpt_thread_ioprio);
344
345 if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE)
346 return -EINVAL;
347
348 return sysfs_emit(buf, "%s,%d\n",
349 class == IOPRIO_CLASS_RT ? "rt" : "be", data);
350 }
351
352#ifdef CONFIG_F2FS_FS_COMPRESSION
353 if (!strcmp(a->attr.name, "compr_written_block"))
354 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block);
355
356 if (!strcmp(a->attr.name, "compr_saved_block"))
357 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block);
358
359 if (!strcmp(a->attr.name, "compr_new_inode"))
360 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode);
361#endif
362
363 if (!strcmp(a->attr.name, "gc_segment_mode"))
364 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode);
365
366 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
367 return sysfs_emit(buf, "%u\n",
368 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]);
369 }
370
371 if (!strcmp(a->attr.name, "current_atomic_write")) {
372 s64 current_write = atomic64_read(&sbi->current_atomic_write);
373
374 return sysfs_emit(buf, "%lld\n", current_write);
375 }
376
377 if (!strcmp(a->attr.name, "peak_atomic_write"))
378 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write);
379
380 if (!strcmp(a->attr.name, "committed_atomic_block"))
381 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block);
382
383 if (!strcmp(a->attr.name, "revoked_atomic_block"))
384 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block);
385
386#ifdef CONFIG_F2FS_STAT_FS
387 if (!strcmp(a->attr.name, "cp_foreground_calls"))
388 return sysfs_emit(buf, "%d\n",
389 atomic_read(&sbi->cp_call_count[TOTAL_CALL]) -
390 atomic_read(&sbi->cp_call_count[BACKGROUND]));
391 if (!strcmp(a->attr.name, "cp_background_calls"))
392 return sysfs_emit(buf, "%d\n",
393 atomic_read(&sbi->cp_call_count[BACKGROUND]));
394#endif
395
396 ui = (unsigned int *)(ptr + a->offset);
397
398 return sysfs_emit(buf, "%u\n", *ui);
399}
400
401static ssize_t __sbi_store(struct f2fs_attr *a,
402 struct f2fs_sb_info *sbi,
403 const char *buf, size_t count)
404{
405 unsigned char *ptr;
406 unsigned long t;
407 unsigned int *ui;
408 ssize_t ret;
409
410 ptr = __struct_ptr(sbi, a->struct_type);
411 if (!ptr)
412 return -EINVAL;
413
414 if (!strcmp(a->attr.name, "extension_list")) {
415 const char *name = strim((char *)buf);
416 bool set = true, hot;
417
418 if (!strncmp(name, "[h]", 3))
419 hot = true;
420 else if (!strncmp(name, "[c]", 3))
421 hot = false;
422 else
423 return -EINVAL;
424
425 name += 3;
426
427 if (*name == '!') {
428 name++;
429 set = false;
430 }
431
432 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN)
433 return -EINVAL;
434
435 f2fs_down_write(&sbi->sb_lock);
436
437 ret = f2fs_update_extension_list(sbi, name, hot, set);
438 if (ret)
439 goto out;
440
441 ret = f2fs_commit_super(sbi, false);
442 if (ret)
443 f2fs_update_extension_list(sbi, name, hot, !set);
444out:
445 f2fs_up_write(&sbi->sb_lock);
446 return ret ? ret : count;
447 }
448
449 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
450 const char *name = strim((char *)buf);
451 struct ckpt_req_control *cprc = &sbi->cprc_info;
452 int class;
453 long data;
454 int ret;
455
456 if (!strncmp(name, "rt,", 3))
457 class = IOPRIO_CLASS_RT;
458 else if (!strncmp(name, "be,", 3))
459 class = IOPRIO_CLASS_BE;
460 else
461 return -EINVAL;
462
463 name += 3;
464 ret = kstrtol(name, 10, &data);
465 if (ret)
466 return ret;
467 if (data >= IOPRIO_NR_LEVELS || data < 0)
468 return -EINVAL;
469
470 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data);
471 if (test_opt(sbi, MERGE_CHECKPOINT)) {
472 ret = set_task_ioprio(cprc->f2fs_issue_ckpt,
473 cprc->ckpt_thread_ioprio);
474 if (ret)
475 return ret;
476 }
477
478 return count;
479 }
480
481 ui = (unsigned int *)(ptr + a->offset);
482
483 ret = kstrtoul(skip_spaces(buf), 0, &t);
484 if (ret < 0)
485 return ret;
486#ifdef CONFIG_F2FS_FAULT_INJECTION
487 if (a->struct_type == FAULT_INFO_TYPE && t >= BIT(FAULT_MAX))
488 return -EINVAL;
489 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX)
490 return -EINVAL;
491#endif
492 if (a->struct_type == RESERVED_BLOCKS) {
493 spin_lock(&sbi->stat_lock);
494 if (t > (unsigned long)(sbi->user_block_count -
495 F2FS_OPTION(sbi).root_reserved_blocks -
496 sbi->blocks_per_seg *
497 SM_I(sbi)->additional_reserved_segments)) {
498 spin_unlock(&sbi->stat_lock);
499 return -EINVAL;
500 }
501 *ui = t;
502 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
503 sbi->user_block_count - valid_user_blocks(sbi));
504 spin_unlock(&sbi->stat_lock);
505 return count;
506 }
507
508 if (!strcmp(a->attr.name, "discard_io_aware_gran")) {
509 if (t > MAX_PLIST_NUM)
510 return -EINVAL;
511 if (!f2fs_block_unit_discard(sbi))
512 return -EINVAL;
513 if (t == *ui)
514 return count;
515 *ui = t;
516 return count;
517 }
518
519 if (!strcmp(a->attr.name, "discard_granularity")) {
520 if (t == 0 || t > MAX_PLIST_NUM)
521 return -EINVAL;
522 if (!f2fs_block_unit_discard(sbi))
523 return -EINVAL;
524 if (t == *ui)
525 return count;
526 *ui = t;
527 return count;
528 }
529
530 if (!strcmp(a->attr.name, "max_ordered_discard")) {
531 if (t == 0 || t > MAX_PLIST_NUM)
532 return -EINVAL;
533 if (!f2fs_block_unit_discard(sbi))
534 return -EINVAL;
535 *ui = t;
536 return count;
537 }
538
539 if (!strcmp(a->attr.name, "discard_urgent_util")) {
540 if (t > 100)
541 return -EINVAL;
542 *ui = t;
543 return count;
544 }
545
546 if (!strcmp(a->attr.name, "discard_io_aware")) {
547 if (t >= DPOLICY_IO_AWARE_MAX)
548 return -EINVAL;
549 *ui = t;
550 return count;
551 }
552
553 if (!strcmp(a->attr.name, "migration_granularity")) {
554 if (t == 0 || t > sbi->segs_per_sec)
555 return -EINVAL;
556 }
557
558 if (!strcmp(a->attr.name, "gc_urgent")) {
559 if (t == 0) {
560 sbi->gc_mode = GC_NORMAL;
561 } else if (t == 1) {
562 sbi->gc_mode = GC_URGENT_HIGH;
563 if (sbi->gc_thread) {
564 sbi->gc_thread->gc_wake = true;
565 wake_up_interruptible_all(
566 &sbi->gc_thread->gc_wait_queue_head);
567 wake_up_discard_thread(sbi, true);
568 }
569 } else if (t == 2) {
570 sbi->gc_mode = GC_URGENT_LOW;
571 } else if (t == 3) {
572 sbi->gc_mode = GC_URGENT_MID;
573 if (sbi->gc_thread) {
574 sbi->gc_thread->gc_wake = true;
575 wake_up_interruptible_all(
576 &sbi->gc_thread->gc_wait_queue_head);
577 }
578 } else {
579 return -EINVAL;
580 }
581 return count;
582 }
583 if (!strcmp(a->attr.name, "gc_idle")) {
584 if (t == GC_IDLE_CB) {
585 sbi->gc_mode = GC_IDLE_CB;
586 } else if (t == GC_IDLE_GREEDY) {
587 sbi->gc_mode = GC_IDLE_GREEDY;
588 } else if (t == GC_IDLE_AT) {
589 if (!sbi->am.atgc_enabled)
590 return -EINVAL;
591 sbi->gc_mode = GC_IDLE_AT;
592 } else {
593 sbi->gc_mode = GC_NORMAL;
594 }
595 return count;
596 }
597
598 if (!strcmp(a->attr.name, "gc_remaining_trials")) {
599 spin_lock(&sbi->gc_remaining_trials_lock);
600 sbi->gc_remaining_trials = t;
601 spin_unlock(&sbi->gc_remaining_trials_lock);
602
603 return count;
604 }
605
606#ifdef CONFIG_F2FS_IOSTAT
607 if (!strcmp(a->attr.name, "iostat_enable")) {
608 sbi->iostat_enable = !!t;
609 if (!sbi->iostat_enable)
610 f2fs_reset_iostat(sbi);
611 return count;
612 }
613
614 if (!strcmp(a->attr.name, "iostat_period_ms")) {
615 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
616 return -EINVAL;
617 spin_lock_irq(&sbi->iostat_lock);
618 sbi->iostat_period_ms = (unsigned int)t;
619 spin_unlock_irq(&sbi->iostat_lock);
620 return count;
621 }
622#endif
623
624#ifdef CONFIG_F2FS_FS_COMPRESSION
625 if (!strcmp(a->attr.name, "compr_written_block") ||
626 !strcmp(a->attr.name, "compr_saved_block")) {
627 if (t != 0)
628 return -EINVAL;
629 sbi->compr_written_block = 0;
630 sbi->compr_saved_block = 0;
631 return count;
632 }
633
634 if (!strcmp(a->attr.name, "compr_new_inode")) {
635 if (t != 0)
636 return -EINVAL;
637 sbi->compr_new_inode = 0;
638 return count;
639 }
640
641 if (!strcmp(a->attr.name, "compress_percent")) {
642 if (t == 0 || t > 100)
643 return -EINVAL;
644 *ui = t;
645 return count;
646 }
647
648 if (!strcmp(a->attr.name, "compress_watermark")) {
649 if (t == 0 || t > 100)
650 return -EINVAL;
651 *ui = t;
652 return count;
653 }
654#endif
655
656 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
657 if (t > 100)
658 return -EINVAL;
659 sbi->am.candidate_ratio = t;
660 return count;
661 }
662
663 if (!strcmp(a->attr.name, "atgc_age_weight")) {
664 if (t > 100)
665 return -EINVAL;
666 sbi->am.age_weight = t;
667 return count;
668 }
669
670 if (!strcmp(a->attr.name, "gc_segment_mode")) {
671 if (t < MAX_GC_MODE)
672 sbi->gc_segment_mode = t;
673 else
674 return -EINVAL;
675 return count;
676 }
677
678 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
679 if (t != 0)
680 return -EINVAL;
681 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0;
682 return count;
683 }
684
685 if (!strcmp(a->attr.name, "seq_file_ra_mul")) {
686 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL)
687 sbi->seq_file_ra_mul = t;
688 else
689 return -EINVAL;
690 return count;
691 }
692
693 if (!strcmp(a->attr.name, "max_fragment_chunk")) {
694 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
695 sbi->max_fragment_chunk = t;
696 else
697 return -EINVAL;
698 return count;
699 }
700
701 if (!strcmp(a->attr.name, "max_fragment_hole")) {
702 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
703 sbi->max_fragment_hole = t;
704 else
705 return -EINVAL;
706 return count;
707 }
708
709 if (!strcmp(a->attr.name, "peak_atomic_write")) {
710 if (t != 0)
711 return -EINVAL;
712 sbi->peak_atomic_write = 0;
713 return count;
714 }
715
716 if (!strcmp(a->attr.name, "committed_atomic_block")) {
717 if (t != 0)
718 return -EINVAL;
719 sbi->committed_atomic_block = 0;
720 return count;
721 }
722
723 if (!strcmp(a->attr.name, "revoked_atomic_block")) {
724 if (t != 0)
725 return -EINVAL;
726 sbi->revoked_atomic_block = 0;
727 return count;
728 }
729
730 if (!strcmp(a->attr.name, "readdir_ra")) {
731 sbi->readdir_ra = !!t;
732 return count;
733 }
734
735 if (!strcmp(a->attr.name, "hot_data_age_threshold")) {
736 if (t == 0 || t >= sbi->warm_data_age_threshold)
737 return -EINVAL;
738 if (t == *ui)
739 return count;
740 *ui = (unsigned int)t;
741 return count;
742 }
743
744 if (!strcmp(a->attr.name, "warm_data_age_threshold")) {
745 if (t <= sbi->hot_data_age_threshold)
746 return -EINVAL;
747 if (t == *ui)
748 return count;
749 *ui = (unsigned int)t;
750 return count;
751 }
752
753 if (!strcmp(a->attr.name, "last_age_weight")) {
754 if (t > 100)
755 return -EINVAL;
756 if (t == *ui)
757 return count;
758 *ui = (unsigned int)t;
759 return count;
760 }
761
762 if (!strcmp(a->attr.name, "ipu_policy")) {
763 if (t >= BIT(F2FS_IPU_MAX))
764 return -EINVAL;
765 if (t && f2fs_lfs_mode(sbi))
766 return -EINVAL;
767 SM_I(sbi)->ipu_policy = (unsigned int)t;
768 return count;
769 }
770
771 if (!strcmp(a->attr.name, "dir_level")) {
772 if (t > MAX_DIR_HASH_DEPTH)
773 return -EINVAL;
774 sbi->dir_level = t;
775 return count;
776 }
777
778 *ui = (unsigned int)t;
779
780 return count;
781}
782
783static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
784 struct f2fs_sb_info *sbi,
785 const char *buf, size_t count)
786{
787 ssize_t ret;
788 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
789 a->struct_type == GC_THREAD);
790
791 if (gc_entry) {
792 if (!down_read_trylock(&sbi->sb->s_umount))
793 return -EAGAIN;
794 }
795 ret = __sbi_store(a, sbi, buf, count);
796 if (gc_entry)
797 up_read(&sbi->sb->s_umount);
798
799 return ret;
800}
801
802static ssize_t f2fs_attr_show(struct kobject *kobj,
803 struct attribute *attr, char *buf)
804{
805 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
806 s_kobj);
807 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
808
809 return a->show ? a->show(a, sbi, buf) : 0;
810}
811
812static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
813 const char *buf, size_t len)
814{
815 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
816 s_kobj);
817 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
818
819 return a->store ? a->store(a, sbi, buf, len) : 0;
820}
821
822static void f2fs_sb_release(struct kobject *kobj)
823{
824 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
825 s_kobj);
826 complete(&sbi->s_kobj_unregister);
827}
828
829/*
830 * Note that there are three feature list entries:
831 * 1) /sys/fs/f2fs/features
832 * : shows runtime features supported by in-kernel f2fs along with Kconfig.
833 * - ref. F2FS_FEATURE_RO_ATTR()
834 *
835 * 2) /sys/fs/f2fs/$s_id/features <deprecated>
836 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
837 * won't add new feature anymore, and thus, users should check entries in 3)
838 * instead of this 2).
839 *
840 * 3) /sys/fs/f2fs/$s_id/feature_list
841 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows
842 * sysfs entry rule where each entry should expose single value.
843 * This list covers old feature list provided by 2) and beyond. Therefore,
844 * please add new on-disk feature in this list only.
845 * - ref. F2FS_SB_FEATURE_RO_ATTR()
846 */
847static ssize_t f2fs_feature_show(struct f2fs_attr *a,
848 struct f2fs_sb_info *sbi, char *buf)
849{
850 return sysfs_emit(buf, "supported\n");
851}
852
853#define F2FS_FEATURE_RO_ATTR(_name) \
854static struct f2fs_attr f2fs_attr_##_name = { \
855 .attr = {.name = __stringify(_name), .mode = 0444 }, \
856 .show = f2fs_feature_show, \
857}
858
859static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
860 struct f2fs_sb_info *sbi, char *buf)
861{
862 if (F2FS_HAS_FEATURE(sbi, a->id))
863 return sysfs_emit(buf, "supported\n");
864 return sysfs_emit(buf, "unsupported\n");
865}
866
867#define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \
868static struct f2fs_attr f2fs_attr_sb_##_name = { \
869 .attr = {.name = __stringify(_name), .mode = 0444 }, \
870 .show = f2fs_sb_feature_show, \
871 .id = F2FS_FEATURE_##_feat, \
872}
873
874#define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
875static struct f2fs_attr f2fs_attr_##_name = { \
876 .attr = {.name = __stringify(_name), .mode = _mode }, \
877 .show = _show, \
878 .store = _store, \
879 .struct_type = _struct_type, \
880 .offset = _offset \
881}
882
883#define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \
884 F2FS_ATTR_OFFSET(struct_type, name, 0444, \
885 f2fs_sbi_show, NULL, \
886 offsetof(struct struct_name, elname))
887
888#define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
889 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
890 f2fs_sbi_show, f2fs_sbi_store, \
891 offsetof(struct struct_name, elname))
892
893#define F2FS_GENERAL_RO_ATTR(name) \
894static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
895
896#ifdef CONFIG_F2FS_STAT_FS
897#define STAT_INFO_RO_ATTR(name, elname) \
898 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname)
899#endif
900
901#define GC_THREAD_RW_ATTR(name, elname) \
902 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname)
903
904#define SM_INFO_RW_ATTR(name, elname) \
905 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname)
906
907#define SM_INFO_GENERAL_RW_ATTR(elname) \
908 SM_INFO_RW_ATTR(elname, elname)
909
910#define DCC_INFO_RW_ATTR(name, elname) \
911 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname)
912
913#define DCC_INFO_GENERAL_RW_ATTR(elname) \
914 DCC_INFO_RW_ATTR(elname, elname)
915
916#define NM_INFO_RW_ATTR(name, elname) \
917 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname)
918
919#define NM_INFO_GENERAL_RW_ATTR(elname) \
920 NM_INFO_RW_ATTR(elname, elname)
921
922#define F2FS_SBI_RW_ATTR(name, elname) \
923 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname)
924
925#define F2FS_SBI_GENERAL_RW_ATTR(elname) \
926 F2FS_SBI_RW_ATTR(elname, elname)
927
928#define F2FS_SBI_GENERAL_RO_ATTR(elname) \
929 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname)
930
931#ifdef CONFIG_F2FS_FAULT_INJECTION
932#define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \
933 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname)
934#endif
935
936#define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \
937 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname)
938
939#define CPRC_INFO_GENERAL_RW_ATTR(elname) \
940 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname)
941
942#define ATGC_INFO_RW_ATTR(name, elname) \
943 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname)
944
945/* GC_THREAD ATTR */
946GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
947GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
948GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
949GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
950
951/* SM_INFO ATTR */
952SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
953SM_INFO_GENERAL_RW_ATTR(ipu_policy);
954SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
955SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
956SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
957SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
958SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
959
960/* DCC_INFO ATTR */
961DCC_INFO_RW_ATTR(max_small_discards, max_discards);
962DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
963DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
964DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
965DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
966DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
967DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
968DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
969DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
970DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
971
972/* NM_INFO ATTR */
973NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
974NM_INFO_GENERAL_RW_ATTR(ram_thresh);
975NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
976NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
977
978/* F2FS_SBI ATTR */
979F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
980F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
981F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
982F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
983F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
984F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
985F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
986F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
987F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
988F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
989F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
990F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
991F2FS_SBI_GENERAL_RW_ATTR(dir_level);
992#ifdef CONFIG_F2FS_IOSTAT
993F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
994F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
995#endif
996F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
997F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
998F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
999F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
1000F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
1001F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
1002F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
1003F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
1004F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
1005#ifdef CONFIG_F2FS_FS_COMPRESSION
1006F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
1007F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
1008F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
1009F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
1010F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
1011#endif
1012/* atomic write */
1013F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
1014F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
1015F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
1016F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
1017/* block age extent cache */
1018F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
1019F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
1020F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
1021#ifdef CONFIG_BLK_DEV_ZONED
1022F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
1023#endif
1024
1025/* STAT_INFO ATTR */
1026#ifdef CONFIG_F2FS_STAT_FS
1027STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
1028STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
1029STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
1030STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
1031#endif
1032
1033/* FAULT_INFO ATTR */
1034#ifdef CONFIG_F2FS_FAULT_INJECTION
1035FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
1036FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
1037#endif
1038
1039/* RESERVED_BLOCKS ATTR */
1040RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
1041
1042/* CPRC_INFO ATTR */
1043CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
1044
1045/* ATGC_INFO ATTR */
1046ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
1047ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
1048ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
1049ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
1050
1051F2FS_GENERAL_RO_ATTR(dirty_segments);
1052F2FS_GENERAL_RO_ATTR(free_segments);
1053F2FS_GENERAL_RO_ATTR(ovp_segments);
1054F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
1055F2FS_GENERAL_RO_ATTR(features);
1056F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
1057F2FS_GENERAL_RO_ATTR(unusable);
1058F2FS_GENERAL_RO_ATTR(encoding);
1059F2FS_GENERAL_RO_ATTR(mounted_time_sec);
1060F2FS_GENERAL_RO_ATTR(main_blkaddr);
1061F2FS_GENERAL_RO_ATTR(pending_discard);
1062F2FS_GENERAL_RO_ATTR(gc_mode);
1063#ifdef CONFIG_F2FS_STAT_FS
1064F2FS_GENERAL_RO_ATTR(moved_blocks_background);
1065F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
1066F2FS_GENERAL_RO_ATTR(avg_vblocks);
1067#endif
1068
1069#ifdef CONFIG_FS_ENCRYPTION
1070F2FS_FEATURE_RO_ATTR(encryption);
1071F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
1072#if IS_ENABLED(CONFIG_UNICODE)
1073F2FS_FEATURE_RO_ATTR(encrypted_casefold);
1074#endif
1075#endif /* CONFIG_FS_ENCRYPTION */
1076#ifdef CONFIG_BLK_DEV_ZONED
1077F2FS_FEATURE_RO_ATTR(block_zoned);
1078#endif
1079F2FS_FEATURE_RO_ATTR(atomic_write);
1080F2FS_FEATURE_RO_ATTR(extra_attr);
1081F2FS_FEATURE_RO_ATTR(project_quota);
1082F2FS_FEATURE_RO_ATTR(inode_checksum);
1083F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
1084F2FS_FEATURE_RO_ATTR(quota_ino);
1085F2FS_FEATURE_RO_ATTR(inode_crtime);
1086F2FS_FEATURE_RO_ATTR(lost_found);
1087#ifdef CONFIG_FS_VERITY
1088F2FS_FEATURE_RO_ATTR(verity);
1089#endif
1090F2FS_FEATURE_RO_ATTR(sb_checksum);
1091#if IS_ENABLED(CONFIG_UNICODE)
1092F2FS_FEATURE_RO_ATTR(casefold);
1093#endif
1094F2FS_FEATURE_RO_ATTR(readonly);
1095#ifdef CONFIG_F2FS_FS_COMPRESSION
1096F2FS_FEATURE_RO_ATTR(compression);
1097#endif
1098F2FS_FEATURE_RO_ATTR(pin_file);
1099
1100#define ATTR_LIST(name) (&f2fs_attr_##name.attr)
1101static struct attribute *f2fs_attrs[] = {
1102 ATTR_LIST(gc_urgent_sleep_time),
1103 ATTR_LIST(gc_min_sleep_time),
1104 ATTR_LIST(gc_max_sleep_time),
1105 ATTR_LIST(gc_no_gc_sleep_time),
1106 ATTR_LIST(gc_idle),
1107 ATTR_LIST(gc_urgent),
1108 ATTR_LIST(reclaim_segments),
1109 ATTR_LIST(main_blkaddr),
1110 ATTR_LIST(max_small_discards),
1111 ATTR_LIST(max_discard_request),
1112 ATTR_LIST(min_discard_issue_time),
1113 ATTR_LIST(mid_discard_issue_time),
1114 ATTR_LIST(max_discard_issue_time),
1115 ATTR_LIST(discard_io_aware_gran),
1116 ATTR_LIST(discard_urgent_util),
1117 ATTR_LIST(discard_granularity),
1118 ATTR_LIST(max_ordered_discard),
1119 ATTR_LIST(discard_io_aware),
1120 ATTR_LIST(pending_discard),
1121 ATTR_LIST(gc_mode),
1122 ATTR_LIST(ipu_policy),
1123 ATTR_LIST(min_ipu_util),
1124 ATTR_LIST(min_fsync_blocks),
1125 ATTR_LIST(min_seq_blocks),
1126 ATTR_LIST(min_hot_blocks),
1127 ATTR_LIST(min_ssr_sections),
1128 ATTR_LIST(max_victim_search),
1129 ATTR_LIST(migration_granularity),
1130 ATTR_LIST(dir_level),
1131 ATTR_LIST(ram_thresh),
1132 ATTR_LIST(ra_nid_pages),
1133 ATTR_LIST(dirty_nats_ratio),
1134 ATTR_LIST(max_roll_forward_node_blocks),
1135 ATTR_LIST(cp_interval),
1136 ATTR_LIST(idle_interval),
1137 ATTR_LIST(discard_idle_interval),
1138 ATTR_LIST(gc_idle_interval),
1139 ATTR_LIST(umount_discard_timeout),
1140#ifdef CONFIG_F2FS_IOSTAT
1141 ATTR_LIST(iostat_enable),
1142 ATTR_LIST(iostat_period_ms),
1143#endif
1144 ATTR_LIST(readdir_ra),
1145 ATTR_LIST(max_io_bytes),
1146 ATTR_LIST(gc_pin_file_thresh),
1147 ATTR_LIST(extension_list),
1148#ifdef CONFIG_F2FS_FAULT_INJECTION
1149 ATTR_LIST(inject_rate),
1150 ATTR_LIST(inject_type),
1151#endif
1152 ATTR_LIST(data_io_flag),
1153 ATTR_LIST(node_io_flag),
1154 ATTR_LIST(gc_remaining_trials),
1155 ATTR_LIST(ckpt_thread_ioprio),
1156 ATTR_LIST(dirty_segments),
1157 ATTR_LIST(free_segments),
1158 ATTR_LIST(ovp_segments),
1159 ATTR_LIST(unusable),
1160 ATTR_LIST(lifetime_write_kbytes),
1161 ATTR_LIST(features),
1162 ATTR_LIST(reserved_blocks),
1163 ATTR_LIST(current_reserved_blocks),
1164 ATTR_LIST(encoding),
1165 ATTR_LIST(mounted_time_sec),
1166#ifdef CONFIG_F2FS_STAT_FS
1167 ATTR_LIST(cp_foreground_calls),
1168 ATTR_LIST(cp_background_calls),
1169 ATTR_LIST(gc_foreground_calls),
1170 ATTR_LIST(gc_background_calls),
1171 ATTR_LIST(moved_blocks_foreground),
1172 ATTR_LIST(moved_blocks_background),
1173 ATTR_LIST(avg_vblocks),
1174#endif
1175#ifdef CONFIG_BLK_DEV_ZONED
1176 ATTR_LIST(unusable_blocks_per_sec),
1177#endif
1178#ifdef CONFIG_F2FS_FS_COMPRESSION
1179 ATTR_LIST(compr_written_block),
1180 ATTR_LIST(compr_saved_block),
1181 ATTR_LIST(compr_new_inode),
1182 ATTR_LIST(compress_percent),
1183 ATTR_LIST(compress_watermark),
1184#endif
1185 /* For ATGC */
1186 ATTR_LIST(atgc_candidate_ratio),
1187 ATTR_LIST(atgc_candidate_count),
1188 ATTR_LIST(atgc_age_weight),
1189 ATTR_LIST(atgc_age_threshold),
1190 ATTR_LIST(seq_file_ra_mul),
1191 ATTR_LIST(gc_segment_mode),
1192 ATTR_LIST(gc_reclaimed_segments),
1193 ATTR_LIST(max_fragment_chunk),
1194 ATTR_LIST(max_fragment_hole),
1195 ATTR_LIST(current_atomic_write),
1196 ATTR_LIST(peak_atomic_write),
1197 ATTR_LIST(committed_atomic_block),
1198 ATTR_LIST(revoked_atomic_block),
1199 ATTR_LIST(hot_data_age_threshold),
1200 ATTR_LIST(warm_data_age_threshold),
1201 ATTR_LIST(last_age_weight),
1202 NULL,
1203};
1204ATTRIBUTE_GROUPS(f2fs);
1205
1206static struct attribute *f2fs_feat_attrs[] = {
1207#ifdef CONFIG_FS_ENCRYPTION
1208 ATTR_LIST(encryption),
1209 ATTR_LIST(test_dummy_encryption_v2),
1210#if IS_ENABLED(CONFIG_UNICODE)
1211 ATTR_LIST(encrypted_casefold),
1212#endif
1213#endif /* CONFIG_FS_ENCRYPTION */
1214#ifdef CONFIG_BLK_DEV_ZONED
1215 ATTR_LIST(block_zoned),
1216#endif
1217 ATTR_LIST(atomic_write),
1218 ATTR_LIST(extra_attr),
1219 ATTR_LIST(project_quota),
1220 ATTR_LIST(inode_checksum),
1221 ATTR_LIST(flexible_inline_xattr),
1222 ATTR_LIST(quota_ino),
1223 ATTR_LIST(inode_crtime),
1224 ATTR_LIST(lost_found),
1225#ifdef CONFIG_FS_VERITY
1226 ATTR_LIST(verity),
1227#endif
1228 ATTR_LIST(sb_checksum),
1229#if IS_ENABLED(CONFIG_UNICODE)
1230 ATTR_LIST(casefold),
1231#endif
1232 ATTR_LIST(readonly),
1233#ifdef CONFIG_F2FS_FS_COMPRESSION
1234 ATTR_LIST(compression),
1235#endif
1236 ATTR_LIST(pin_file),
1237 NULL,
1238};
1239ATTRIBUTE_GROUPS(f2fs_feat);
1240
1241F2FS_GENERAL_RO_ATTR(sb_status);
1242F2FS_GENERAL_RO_ATTR(cp_status);
1243F2FS_GENERAL_RO_ATTR(issued_discard);
1244F2FS_GENERAL_RO_ATTR(queued_discard);
1245F2FS_GENERAL_RO_ATTR(undiscard_blks);
1246
1247static struct attribute *f2fs_stat_attrs[] = {
1248 ATTR_LIST(sb_status),
1249 ATTR_LIST(cp_status),
1250 ATTR_LIST(issued_discard),
1251 ATTR_LIST(queued_discard),
1252 ATTR_LIST(undiscard_blks),
1253 NULL,
1254};
1255ATTRIBUTE_GROUPS(f2fs_stat);
1256
1257F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1258F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1259F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1260F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1261F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1262F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1263F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1264F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1265F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1266F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1267F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1268F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1269F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1270F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1271
1272static struct attribute *f2fs_sb_feat_attrs[] = {
1273 ATTR_LIST(sb_encryption),
1274 ATTR_LIST(sb_block_zoned),
1275 ATTR_LIST(sb_extra_attr),
1276 ATTR_LIST(sb_project_quota),
1277 ATTR_LIST(sb_inode_checksum),
1278 ATTR_LIST(sb_flexible_inline_xattr),
1279 ATTR_LIST(sb_quota_ino),
1280 ATTR_LIST(sb_inode_crtime),
1281 ATTR_LIST(sb_lost_found),
1282 ATTR_LIST(sb_verity),
1283 ATTR_LIST(sb_sb_checksum),
1284 ATTR_LIST(sb_casefold),
1285 ATTR_LIST(sb_compression),
1286 ATTR_LIST(sb_readonly),
1287 NULL,
1288};
1289ATTRIBUTE_GROUPS(f2fs_sb_feat);
1290
1291static const struct sysfs_ops f2fs_attr_ops = {
1292 .show = f2fs_attr_show,
1293 .store = f2fs_attr_store,
1294};
1295
1296static const struct kobj_type f2fs_sb_ktype = {
1297 .default_groups = f2fs_groups,
1298 .sysfs_ops = &f2fs_attr_ops,
1299 .release = f2fs_sb_release,
1300};
1301
1302static const struct kobj_type f2fs_ktype = {
1303 .sysfs_ops = &f2fs_attr_ops,
1304};
1305
1306static struct kset f2fs_kset = {
1307 .kobj = {.ktype = &f2fs_ktype},
1308};
1309
1310static const struct kobj_type f2fs_feat_ktype = {
1311 .default_groups = f2fs_feat_groups,
1312 .sysfs_ops = &f2fs_attr_ops,
1313};
1314
1315static struct kobject f2fs_feat = {
1316 .kset = &f2fs_kset,
1317};
1318
1319static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
1320 struct attribute *attr, char *buf)
1321{
1322 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1323 s_stat_kobj);
1324 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1325
1326 return a->show ? a->show(a, sbi, buf) : 0;
1327}
1328
1329static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
1330 const char *buf, size_t len)
1331{
1332 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1333 s_stat_kobj);
1334 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1335
1336 return a->store ? a->store(a, sbi, buf, len) : 0;
1337}
1338
1339static void f2fs_stat_kobj_release(struct kobject *kobj)
1340{
1341 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1342 s_stat_kobj);
1343 complete(&sbi->s_stat_kobj_unregister);
1344}
1345
1346static const struct sysfs_ops f2fs_stat_attr_ops = {
1347 .show = f2fs_stat_attr_show,
1348 .store = f2fs_stat_attr_store,
1349};
1350
1351static const struct kobj_type f2fs_stat_ktype = {
1352 .default_groups = f2fs_stat_groups,
1353 .sysfs_ops = &f2fs_stat_attr_ops,
1354 .release = f2fs_stat_kobj_release,
1355};
1356
1357static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
1358 struct attribute *attr, char *buf)
1359{
1360 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1361 s_feature_list_kobj);
1362 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1363
1364 return a->show ? a->show(a, sbi, buf) : 0;
1365}
1366
1367static void f2fs_feature_list_kobj_release(struct kobject *kobj)
1368{
1369 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1370 s_feature_list_kobj);
1371 complete(&sbi->s_feature_list_kobj_unregister);
1372}
1373
1374static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1375 .show = f2fs_sb_feat_attr_show,
1376};
1377
1378static const struct kobj_type f2fs_feature_list_ktype = {
1379 .default_groups = f2fs_sb_feat_groups,
1380 .sysfs_ops = &f2fs_feature_list_attr_ops,
1381 .release = f2fs_feature_list_kobj_release,
1382};
1383
1384static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
1385 void *offset)
1386{
1387 struct super_block *sb = seq->private;
1388 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1389 unsigned int total_segs =
1390 le32_to_cpu(sbi->raw_super->segment_count_main);
1391 int i;
1392
1393 seq_puts(seq, "format: segment_type|valid_blocks\n"
1394 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1395
1396 for (i = 0; i < total_segs; i++) {
1397 struct seg_entry *se = get_seg_entry(sbi, i);
1398
1399 if ((i % 10) == 0)
1400 seq_printf(seq, "%-10d", i);
1401 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
1402 if ((i % 10) == 9 || i == (total_segs - 1))
1403 seq_putc(seq, '\n');
1404 else
1405 seq_putc(seq, ' ');
1406 }
1407
1408 return 0;
1409}
1410
1411static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
1412 void *offset)
1413{
1414 struct super_block *sb = seq->private;
1415 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1416 unsigned int total_segs =
1417 le32_to_cpu(sbi->raw_super->segment_count_main);
1418 int i, j;
1419
1420 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
1421 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1422
1423 for (i = 0; i < total_segs; i++) {
1424 struct seg_entry *se = get_seg_entry(sbi, i);
1425
1426 seq_printf(seq, "%-10d", i);
1427 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
1428 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
1429 seq_printf(seq, " %.2x", se->cur_valid_map[j]);
1430 seq_putc(seq, '\n');
1431 }
1432 return 0;
1433}
1434
1435static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
1436 void *offset)
1437{
1438 struct super_block *sb = seq->private;
1439 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1440 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1441 int i;
1442
1443 seq_puts(seq, "format: victim_secmap bitmaps\n");
1444
1445 for (i = 0; i < MAIN_SECS(sbi); i++) {
1446 if ((i % 10) == 0)
1447 seq_printf(seq, "%-10d", i);
1448 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
1449 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
1450 seq_putc(seq, '\n');
1451 else
1452 seq_putc(seq, ' ');
1453 }
1454 return 0;
1455}
1456
1457static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
1458 void *offset)
1459{
1460 struct super_block *sb = seq->private;
1461 struct f2fs_sb_info *sbi = F2FS_SB(sb);
1462 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1463 int i, count;
1464
1465 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n");
1466 if (!f2fs_realtime_discard_enable(sbi))
1467 return 0;
1468
1469 if (dcc) {
1470 mutex_lock(&dcc->cmd_lock);
1471 for (i = 0; i < MAX_PLIST_NUM; i++) {
1472 struct list_head *pend_list;
1473 struct discard_cmd *dc, *tmp;
1474
1475 if (i % 8 == 0)
1476 seq_printf(seq, " %-3d", i);
1477 count = 0;
1478 pend_list = &dcc->pend_list[i];
1479 list_for_each_entry_safe(dc, tmp, pend_list, list)
1480 count++;
1481 if (count)
1482 seq_printf(seq, " %7d", count);
1483 else
1484 seq_puts(seq, " .");
1485 if (i % 8 == 7)
1486 seq_putc(seq, '\n');
1487 }
1488 seq_putc(seq, '\n');
1489 mutex_unlock(&dcc->cmd_lock);
1490 }
1491
1492 return 0;
1493}
1494
1495int __init f2fs_init_sysfs(void)
1496{
1497 int ret;
1498
1499 kobject_set_name(&f2fs_kset.kobj, "f2fs");
1500 f2fs_kset.kobj.parent = fs_kobj;
1501 ret = kset_register(&f2fs_kset);
1502 if (ret)
1503 return ret;
1504
1505 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
1506 NULL, "features");
1507 if (ret)
1508 goto put_kobject;
1509
1510 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
1511 if (!f2fs_proc_root) {
1512 ret = -ENOMEM;
1513 goto put_kobject;
1514 }
1515
1516 return 0;
1517put_kobject:
1518 kobject_put(&f2fs_feat);
1519 kset_unregister(&f2fs_kset);
1520 return ret;
1521}
1522
1523void f2fs_exit_sysfs(void)
1524{
1525 kobject_put(&f2fs_feat);
1526 kset_unregister(&f2fs_kset);
1527 remove_proc_entry("fs/f2fs", NULL);
1528 f2fs_proc_root = NULL;
1529}
1530
1531int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
1532{
1533 struct super_block *sb = sbi->sb;
1534 int err;
1535
1536 sbi->s_kobj.kset = &f2fs_kset;
1537 init_completion(&sbi->s_kobj_unregister);
1538 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
1539 "%s", sb->s_id);
1540 if (err)
1541 goto put_sb_kobj;
1542
1543 sbi->s_stat_kobj.kset = &f2fs_kset;
1544 init_completion(&sbi->s_stat_kobj_unregister);
1545 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
1546 &sbi->s_kobj, "stat");
1547 if (err)
1548 goto put_stat_kobj;
1549
1550 sbi->s_feature_list_kobj.kset = &f2fs_kset;
1551 init_completion(&sbi->s_feature_list_kobj_unregister);
1552 err = kobject_init_and_add(&sbi->s_feature_list_kobj,
1553 &f2fs_feature_list_ktype,
1554 &sbi->s_kobj, "feature_list");
1555 if (err)
1556 goto put_feature_list_kobj;
1557
1558 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
1559 if (!sbi->s_proc) {
1560 err = -ENOMEM;
1561 goto put_feature_list_kobj;
1562 }
1563
1564 proc_create_single_data("segment_info", 0444, sbi->s_proc,
1565 segment_info_seq_show, sb);
1566 proc_create_single_data("segment_bits", 0444, sbi->s_proc,
1567 segment_bits_seq_show, sb);
1568#ifdef CONFIG_F2FS_IOSTAT
1569 proc_create_single_data("iostat_info", 0444, sbi->s_proc,
1570 iostat_info_seq_show, sb);
1571#endif
1572 proc_create_single_data("victim_bits", 0444, sbi->s_proc,
1573 victim_bits_seq_show, sb);
1574 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
1575 discard_plist_seq_show, sb);
1576 return 0;
1577put_feature_list_kobj:
1578 kobject_put(&sbi->s_feature_list_kobj);
1579 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1580put_stat_kobj:
1581 kobject_put(&sbi->s_stat_kobj);
1582 wait_for_completion(&sbi->s_stat_kobj_unregister);
1583put_sb_kobj:
1584 kobject_put(&sbi->s_kobj);
1585 wait_for_completion(&sbi->s_kobj_unregister);
1586 return err;
1587}
1588
1589void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
1590{
1591 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root);
1592
1593 kobject_put(&sbi->s_stat_kobj);
1594 wait_for_completion(&sbi->s_stat_kobj_unregister);
1595 kobject_put(&sbi->s_feature_list_kobj);
1596 wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1597
1598 kobject_put(&sbi->s_kobj);
1599 wait_for_completion(&sbi->s_kobj_unregister);
1600}