fs/f2fs/sysfs.c

   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 <[email protected]>
   8  */
   9 #include <linux/compiler.h>
  10 #include <linux/proc_fs.h>
  11 #include <linux/f2fs_fs.h>
  12 #include <linux/seq_file.h>
  13 #include <linux/unicode.h>
  14 #include <linux/ioprio.h>
  15 #include <linux/sysfs.h>
  16
  17 #include "f2fs.h"
  18 #include "segment.h"
  19 #include "gc.h"
  20 #include "iostat.h"
  21 #include <trace/events/f2fs.h>
  22
  23 static struct proc_dir_entry *f2fs_proc_root;
  24
  25 /* Sysfs support for f2fs */
  26 enum {
  27         GC_THREAD,      /* struct f2fs_gc_thread */
  28         SM_INFO,        /* struct f2fs_sm_info */
  29         DCC_INFO,       /* struct discard_cmd_control */
  30         NM_INFO,        /* struct f2fs_nm_info */
  31         F2FS_SBI,       /* struct f2fs_sb_info */
  32 #ifdef CONFIG_F2FS_STAT_FS
  33         STAT_INFO,      /* struct f2fs_stat_info */
  34 #endif
  35 #ifdef CONFIG_F2FS_FAULT_INJECTION
  36         FAULT_INFO_RATE,        /* struct f2fs_fault_info */
  37         FAULT_INFO_TYPE,        /* struct f2fs_fault_info */
  38 #endif
  39         RESERVED_BLOCKS,        /* struct f2fs_sb_info */
  40         CPRC_INFO,      /* struct ckpt_req_control */
  41         ATGC_INFO,      /* struct atgc_management */
  42 };
  43
  44 static const char *gc_mode_names[MAX_GC_MODE] = {
  45         "GC_NORMAL",
  46         "GC_IDLE_CB",
  47         "GC_IDLE_GREEDY",
  48         "GC_IDLE_AT",
  49         "GC_URGENT_HIGH",
  50         "GC_URGENT_LOW",
  51         "GC_URGENT_MID"
  52 };
  53
  54 struct f2fs_attr {
  55         struct attribute attr;
  56         ssize_t (*show)(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf);
  57         ssize_t (*store)(struct f2fs_attr *a, struct f2fs_sb_info *sbi,
  58                          const char *buf, size_t len);
  59         int struct_type;
  60         int offset;
  61         int id;
  62 };
  63
  64 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
  65                              struct f2fs_sb_info *sbi, char *buf);
  66
  67 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type)
  68 {
  69         if (struct_type == GC_THREAD)
  70                 return (unsigned char *)sbi->gc_thread;
  71         else if (struct_type == SM_INFO)
  72                 return (unsigned char *)SM_I(sbi);
  73         else if (struct_type == DCC_INFO)
  74                 return (unsigned char *)SM_I(sbi)->dcc_info;
  75         else if (struct_type == NM_INFO)
  76                 return (unsigned char *)NM_I(sbi);
  77         else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS)
  78                 return (unsigned char *)sbi;
  79 #ifdef CONFIG_F2FS_FAULT_INJECTION
  80         else if (struct_type == FAULT_INFO_RATE ||
  81                                         struct_type == FAULT_INFO_TYPE)
  82                 return (unsigned char *)&F2FS_OPTION(sbi).fault_info;
  83 #endif
  84 #ifdef CONFIG_F2FS_STAT_FS
  85         else if (struct_type == STAT_INFO)
  86                 return (unsigned char *)F2FS_STAT(sbi);
  87 #endif
  88         else if (struct_type == CPRC_INFO)
  89                 return (unsigned char *)&sbi->cprc_info;
  90         else if (struct_type == ATGC_INFO)
  91                 return (unsigned char *)&sbi->am;
  92         return NULL;
  93 }
  94
  95 static ssize_t dirty_segments_show(struct f2fs_attr *a,
  96                 struct f2fs_sb_info *sbi, char *buf)
  97 {
  98         return sysfs_emit(buf, "%llu\n",
  99                         (unsigned long long)(dirty_segments(sbi)));
 100 }
 101
 102 static ssize_t free_segments_show(struct f2fs_attr *a,
 103                 struct f2fs_sb_info *sbi, char *buf)
 104 {
 105         return sysfs_emit(buf, "%llu\n",
 106                         (unsigned long long)(free_segments(sbi)));
 107 }
 108
 109 static ssize_t ovp_segments_show(struct f2fs_attr *a,
 110                 struct f2fs_sb_info *sbi, char *buf)
 111 {
 112         return sysfs_emit(buf, "%llu\n",
 113                         (unsigned long long)(overprovision_segments(sbi)));
 114 }
 115
 116 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a,
 117                 struct f2fs_sb_info *sbi, char *buf)
 118 {
 119         return sysfs_emit(buf, "%llu\n",
 120                         (unsigned long long)(sbi->kbytes_written +
 121                         ((f2fs_get_sectors_written(sbi) -
 122                                 sbi->sectors_written_start) >> 1)));
 123 }
 124
 125 static ssize_t sb_status_show(struct f2fs_attr *a,
 126                 struct f2fs_sb_info *sbi, char *buf)
 127 {
 128         return sysfs_emit(buf, "%lx\n", sbi->s_flag);
 129 }
 130
 131 static ssize_t cp_status_show(struct f2fs_attr *a,
 132                 struct f2fs_sb_info *sbi, char *buf)
 133 {
 134         return sysfs_emit(buf, "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags));
 135 }
 136
 137 static ssize_t pending_discard_show(struct f2fs_attr *a,
 138                 struct f2fs_sb_info *sbi, char *buf)
 139 {
 140         if (!SM_I(sbi)->dcc_info)
 141                 return -EINVAL;
 142         return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
 143                                 &SM_I(sbi)->dcc_info->discard_cmd_cnt));
 144 }
 145
 146 static ssize_t issued_discard_show(struct f2fs_attr *a,
 147                 struct f2fs_sb_info *sbi, char *buf)
 148 {
 149         if (!SM_I(sbi)->dcc_info)
 150                 return -EINVAL;
 151         return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
 152                                 &SM_I(sbi)->dcc_info->issued_discard));
 153 }
 154
 155 static ssize_t queued_discard_show(struct f2fs_attr *a,
 156                 struct f2fs_sb_info *sbi, char *buf)
 157 {
 158         if (!SM_I(sbi)->dcc_info)
 159                 return -EINVAL;
 160         return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read(
 161                                 &SM_I(sbi)->dcc_info->queued_discard));
 162 }
 163
 164 static ssize_t undiscard_blks_show(struct f2fs_attr *a,
 165                 struct f2fs_sb_info *sbi, char *buf)
 166 {
 167         if (!SM_I(sbi)->dcc_info)
 168                 return -EINVAL;
 169         return sysfs_emit(buf, "%u\n",
 170                                 SM_I(sbi)->dcc_info->undiscard_blks);
 171 }
 172
 173 static ssize_t atgc_enabled_show(struct f2fs_attr *a,
 174                 struct f2fs_sb_info *sbi, char *buf)
 175 {
 176         return sysfs_emit(buf, "%d\n", sbi->am.atgc_enabled ? 1 : 0);
 177 }
 178
 179 static ssize_t gc_mode_show(struct f2fs_attr *a,
 180                 struct f2fs_sb_info *sbi, char *buf)
 181 {
 182         return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]);
 183 }
 184
 185 static ssize_t features_show(struct f2fs_attr *a,
 186                 struct f2fs_sb_info *sbi, char *buf)
 187 {
 188         int len = 0;
 189
 190         if (f2fs_sb_has_encrypt(sbi))
 191                 len += sysfs_emit_at(buf, len, "%s",
 192                                                 "encryption");
 193         if (f2fs_sb_has_blkzoned(sbi))
 194                 len += sysfs_emit_at(buf, len, "%s%s",
 195                                 len ? ", " : "", "blkzoned");
 196         if (f2fs_sb_has_extra_attr(sbi))
 197                 len += sysfs_emit_at(buf, len, "%s%s",
 198                                 len ? ", " : "", "extra_attr");
 199         if (f2fs_sb_has_project_quota(sbi))
 200                 len += sysfs_emit_at(buf, len, "%s%s",
 201                                 len ? ", " : "", "projquota");
 202         if (f2fs_sb_has_inode_chksum(sbi))
 203                 len += sysfs_emit_at(buf, len, "%s%s",
 204                                 len ? ", " : "", "inode_checksum");
 205         if (f2fs_sb_has_flexible_inline_xattr(sbi))
 206                 len += sysfs_emit_at(buf, len, "%s%s",
 207                                 len ? ", " : "", "flexible_inline_xattr");
 208         if (f2fs_sb_has_quota_ino(sbi))
 209                 len += sysfs_emit_at(buf, len, "%s%s",
 210                                 len ? ", " : "", "quota_ino");
 211         if (f2fs_sb_has_inode_crtime(sbi))
 212                 len += sysfs_emit_at(buf, len, "%s%s",
 213                                 len ? ", " : "", "inode_crtime");
 214         if (f2fs_sb_has_lost_found(sbi))
 215                 len += sysfs_emit_at(buf, len, "%s%s",
 216                                 len ? ", " : "", "lost_found");
 217         if (f2fs_sb_has_verity(sbi))
 218                 len += sysfs_emit_at(buf, len, "%s%s",
 219                                 len ? ", " : "", "verity");
 220         if (f2fs_sb_has_sb_chksum(sbi))
 221                 len += sysfs_emit_at(buf, len, "%s%s",
 222                                 len ? ", " : "", "sb_checksum");
 223         if (f2fs_sb_has_casefold(sbi))
 224                 len += sysfs_emit_at(buf, len, "%s%s",
 225                                 len ? ", " : "", "casefold");
 226         if (f2fs_sb_has_readonly(sbi))
 227                 len += sysfs_emit_at(buf, len, "%s%s",
 228                                 len ? ", " : "", "readonly");
 229         if (f2fs_sb_has_compression(sbi))
 230                 len += sysfs_emit_at(buf, len, "%s%s",
 231                                 len ? ", " : "", "compression");
 232         len += sysfs_emit_at(buf, len, "%s%s",
 233                                 len ? ", " : "", "pin_file");
 234         len += sysfs_emit_at(buf, len, "\n");
 235         return len;
 236 }
 237
 238 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a,
 239                                         struct f2fs_sb_info *sbi, char *buf)
 240 {
 241         return sysfs_emit(buf, "%u\n", sbi->current_reserved_blocks);
 242 }
 243
 244 static ssize_t unusable_show(struct f2fs_attr *a,
 245                 struct f2fs_sb_info *sbi, char *buf)
 246 {
 247         block_t unusable;
 248
 249         if (test_opt(sbi, DISABLE_CHECKPOINT))
 250                 unusable = sbi->unusable_block_count;
 251         else
 252                 unusable = f2fs_get_unusable_blocks(sbi);
 253         return sysfs_emit(buf, "%llu\n", (unsigned long long)unusable);
 254 }
 255
 256 static ssize_t encoding_show(struct f2fs_attr *a,
 257                 struct f2fs_sb_info *sbi, char *buf)
 258 {
 259 #if IS_ENABLED(CONFIG_UNICODE)
 260         struct super_block *sb = sbi->sb;
 261
 262         if (f2fs_sb_has_casefold(sbi))
 263                 return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n",
 264                         (sb->s_encoding->version >> 16) & 0xff,
 265                         (sb->s_encoding->version >> 8) & 0xff,
 266                         sb->s_encoding->version & 0xff);
 267 #endif
 268         return sysfs_emit(buf, "(none)\n");
 269 }
 270
 271 static ssize_t mounted_time_sec_show(struct f2fs_attr *a,
 272                 struct f2fs_sb_info *sbi, char *buf)
 273 {
 274         return sysfs_emit(buf, "%llu\n", SIT_I(sbi)->mounted_time);
 275 }
 276
 277 #ifdef CONFIG_F2FS_STAT_FS
 278 static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a,
 279                                 struct f2fs_sb_info *sbi, char *buf)
 280 {
 281         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 282
 283         return sysfs_emit(buf, "%llu\n",
 284                 (unsigned long long)(si->tot_blks -
 285                         (si->bg_data_blks + si->bg_node_blks)));
 286 }
 287
 288 static ssize_t moved_blocks_background_show(struct f2fs_attr *a,
 289                                 struct f2fs_sb_info *sbi, char *buf)
 290 {
 291         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 292
 293         return sysfs_emit(buf, "%llu\n",
 294                 (unsigned long long)(si->bg_data_blks + si->bg_node_blks));
 295 }
 296
 297 static ssize_t avg_vblocks_show(struct f2fs_attr *a,
 298                 struct f2fs_sb_info *sbi, char *buf)
 299 {
 300         struct f2fs_stat_info *si = F2FS_STAT(sbi);
 301
 302         si->dirty_count = dirty_segments(sbi);
 303         f2fs_update_sit_info(sbi);
 304         return sysfs_emit(buf, "%llu\n", (unsigned long long)(si->avg_vblocks));
 305 }
 306 #endif
 307
 308 static ssize_t main_blkaddr_show(struct f2fs_attr *a,
 309                                 struct f2fs_sb_info *sbi, char *buf)
 310 {
 311         return sysfs_emit(buf, "%llu\n",
 312                         (unsigned long long)MAIN_BLKADDR(sbi));
 313 }
 314
 315 static ssize_t f2fs_sbi_show(struct f2fs_attr *a,
 316                         struct f2fs_sb_info *sbi, char *buf)
 317 {
 318         unsigned char *ptr = NULL;
 319         unsigned int *ui;
 320
 321         ptr = __struct_ptr(sbi, a->struct_type);
 322         if (!ptr)
 323                 return -EINVAL;
 324
 325         if (!strcmp(a->attr.name, "extension_list")) {
 326                 __u8 (*extlist)[F2FS_EXTENSION_LEN] =
 327                                         sbi->raw_super->extension_list;
 328                 int cold_count = le32_to_cpu(sbi->raw_super->extension_count);
 329                 int hot_count = sbi->raw_super->hot_ext_count;
 330                 int len = 0, i;
 331
 332                 len += sysfs_emit_at(buf, len, "cold file extension:\n");
 333                 for (i = 0; i < cold_count; i++)
 334                         len += sysfs_emit_at(buf, len, "%s\n", extlist[i]);
 335
 336                 len += sysfs_emit_at(buf, len, "hot file extension:\n");
 337                 for (i = cold_count; i < cold_count + hot_count; i++)
 338                         len += sysfs_emit_at(buf, len, "%s\n", extlist[i]);
 339
 340                 return len;
 341         }
 342
 343         if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
 344                 struct ckpt_req_control *cprc = &sbi->cprc_info;
 345                 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio);
 346                 int level = IOPRIO_PRIO_LEVEL(cprc->ckpt_thread_ioprio);
 347
 348                 if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE)
 349                         return -EINVAL;
 350
 351                 return sysfs_emit(buf, "%s,%d\n",
 352                         class == IOPRIO_CLASS_RT ? "rt" : "be", level);
 353         }
 354
 355 #ifdef CONFIG_F2FS_FS_COMPRESSION
 356         if (!strcmp(a->attr.name, "compr_written_block"))
 357                 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block);
 358
 359         if (!strcmp(a->attr.name, "compr_saved_block"))
 360                 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block);
 361
 362         if (!strcmp(a->attr.name, "compr_new_inode"))
 363                 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode);
 364 #endif
 365
 366         if (!strcmp(a->attr.name, "gc_segment_mode"))
 367                 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode);
 368
 369         if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
 370                 return sysfs_emit(buf, "%u\n",
 371                         sbi->gc_reclaimed_segs[sbi->gc_segment_mode]);
 372         }
 373
 374         if (!strcmp(a->attr.name, "current_atomic_write")) {
 375                 s64 current_write = atomic64_read(&sbi->current_atomic_write);
 376
 377                 return sysfs_emit(buf, "%lld\n", current_write);
 378         }
 379
 380         if (!strcmp(a->attr.name, "peak_atomic_write"))
 381                 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write);
 382
 383         if (!strcmp(a->attr.name, "committed_atomic_block"))
 384                 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block);
 385
 386         if (!strcmp(a->attr.name, "revoked_atomic_block"))
 387                 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block);
 388
 389 #ifdef CONFIG_F2FS_STAT_FS
 390         if (!strcmp(a->attr.name, "cp_foreground_calls"))
 391                 return sysfs_emit(buf, "%d\n",
 392                                 atomic_read(&sbi->cp_call_count[TOTAL_CALL]) -
 393                                 atomic_read(&sbi->cp_call_count[BACKGROUND]));
 394         if (!strcmp(a->attr.name, "cp_background_calls"))
 395                 return sysfs_emit(buf, "%d\n",
 396                                 atomic_read(&sbi->cp_call_count[BACKGROUND]));
 397 #endif
 398
 399         ui = (unsigned int *)(ptr + a->offset);
 400
 401         return sysfs_emit(buf, "%u\n", *ui);
 402 }
 403
 404 static ssize_t __sbi_store(struct f2fs_attr *a,
 405                         struct f2fs_sb_info *sbi,
 406                         const char *buf, size_t count)
 407 {
 408         unsigned char *ptr;
 409         unsigned long t;
 410         unsigned int *ui;
 411         ssize_t ret;
 412
 413         ptr = __struct_ptr(sbi, a->struct_type);
 414         if (!ptr)
 415                 return -EINVAL;
 416
 417         if (!strcmp(a->attr.name, "extension_list")) {
 418                 const char *name = strim((char *)buf);
 419                 bool set = true, hot;
 420
 421                 if (!strncmp(name, "[h]", 3))
 422                         hot = true;
 423                 else if (!strncmp(name, "[c]", 3))
 424                         hot = false;
 425                 else
 426                         return -EINVAL;
 427
 428                 name += 3;
 429
 430                 if (*name == '!') {
 431                         name++;
 432                         set = false;
 433                 }
 434
 435                 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN)
 436                         return -EINVAL;
 437
 438                 f2fs_down_write(&sbi->sb_lock);
 439
 440                 ret = f2fs_update_extension_list(sbi, name, hot, set);
 441                 if (ret)
 442                         goto out;
 443
 444                 ret = f2fs_commit_super(sbi, false);
 445                 if (ret)
 446                         f2fs_update_extension_list(sbi, name, hot, !set);
 447 out:
 448                 f2fs_up_write(&sbi->sb_lock);
 449                 return ret ? ret : count;
 450         }
 451
 452         if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) {
 453                 const char *name = strim((char *)buf);
 454                 struct ckpt_req_control *cprc = &sbi->cprc_info;
 455                 int class;
 456                 long level;
 457                 int ret;
 458
 459                 if (!strncmp(name, "rt,", 3))
 460                         class = IOPRIO_CLASS_RT;
 461                 else if (!strncmp(name, "be,", 3))
 462                         class = IOPRIO_CLASS_BE;
 463                 else
 464                         return -EINVAL;
 465
 466                 name += 3;
 467                 ret = kstrtol(name, 10, &level);
 468                 if (ret)
 469                         return ret;
 470                 if (level >= IOPRIO_NR_LEVELS || level < 0)
 471                         return -EINVAL;
 472
 473                 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, level);
 474                 if (test_opt(sbi, MERGE_CHECKPOINT)) {
 475                         ret = set_task_ioprio(cprc->f2fs_issue_ckpt,
 476                                         cprc->ckpt_thread_ioprio);
 477                         if (ret)
 478                                 return ret;
 479                 }
 480
 481                 return count;
 482         }
 483
 484         ui = (unsigned int *)(ptr + a->offset);
 485
 486         ret = kstrtoul(skip_spaces(buf), 0, &t);
 487         if (ret < 0)
 488                 return ret;
 489 #ifdef CONFIG_F2FS_FAULT_INJECTION
 490         if (a->struct_type == FAULT_INFO_TYPE) {
 491                 if (f2fs_build_fault_attr(sbi, 0, t))
 492                         return -EINVAL;
 493                 return count;
 494         }
 495         if (a->struct_type == FAULT_INFO_RATE) {
 496                 if (f2fs_build_fault_attr(sbi, t, 0))
 497                         return -EINVAL;
 498                 return count;
 499         }
 500 #endif
 501         if (a->struct_type == RESERVED_BLOCKS) {
 502                 spin_lock(&sbi->stat_lock);
 503                 if (t > (unsigned long)(sbi->user_block_count -
 504                                 F2FS_OPTION(sbi).root_reserved_blocks)) {
 505                         spin_unlock(&sbi->stat_lock);
 506                         return -EINVAL;
 507                 }
 508                 *ui = t;
 509                 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
 510                                 sbi->user_block_count - valid_user_blocks(sbi));
 511                 spin_unlock(&sbi->stat_lock);
 512                 return count;
 513         }
 514
 515         if (!strcmp(a->attr.name, "discard_io_aware_gran")) {
 516                 if (t > MAX_PLIST_NUM)
 517                         return -EINVAL;
 518                 if (!f2fs_block_unit_discard(sbi))
 519                         return -EINVAL;
 520                 if (t == *ui)
 521                         return count;
 522                 *ui = t;
 523                 return count;
 524         }
 525
 526         if (!strcmp(a->attr.name, "discard_granularity")) {
 527                 if (t == 0 || t > MAX_PLIST_NUM)
 528                         return -EINVAL;
 529                 if (!f2fs_block_unit_discard(sbi))
 530                         return -EINVAL;
 531                 if (t == *ui)
 532                         return count;
 533                 *ui = t;
 534                 return count;
 535         }
 536
 537         if (!strcmp(a->attr.name, "max_ordered_discard")) {
 538                 if (t == 0 || t > MAX_PLIST_NUM)
 539                         return -EINVAL;
 540                 if (!f2fs_block_unit_discard(sbi))
 541                         return -EINVAL;
 542                 *ui = t;
 543                 return count;
 544         }
 545
 546         if (!strcmp(a->attr.name, "discard_urgent_util")) {
 547                 if (t > 100)
 548                         return -EINVAL;
 549                 *ui = t;
 550                 return count;
 551         }
 552
 553         if (!strcmp(a->attr.name, "discard_io_aware")) {
 554                 if (t >= DPOLICY_IO_AWARE_MAX)
 555                         return -EINVAL;
 556                 *ui = t;
 557                 return count;
 558         }
 559
 560         if (!strcmp(a->attr.name, "migration_granularity")) {
 561                 if (t == 0 || t > SEGS_PER_SEC(sbi))
 562                         return -EINVAL;
 563         }
 564
 565         if (!strcmp(a->attr.name, "migration_window_granularity")) {
 566                 if (t == 0 || t > SEGS_PER_SEC(sbi))
 567                         return -EINVAL;
 568         }
 569
 570         if (!strcmp(a->attr.name, "gc_urgent")) {
 571                 if (t == 0) {
 572                         sbi->gc_mode = GC_NORMAL;
 573                 } else if (t == 1) {
 574                         sbi->gc_mode = GC_URGENT_HIGH;
 575                         if (sbi->gc_thread) {
 576                                 sbi->gc_thread->gc_wake = true;
 577                                 wake_up_interruptible_all(
 578                                         &sbi->gc_thread->gc_wait_queue_head);
 579                                 wake_up_discard_thread(sbi, true);
 580                         }
 581                 } else if (t == 2) {
 582                         sbi->gc_mode = GC_URGENT_LOW;
 583                 } else if (t == 3) {
 584                         sbi->gc_mode = GC_URGENT_MID;
 585                         if (sbi->gc_thread) {
 586                                 sbi->gc_thread->gc_wake = true;
 587                                 wake_up_interruptible_all(
 588                                         &sbi->gc_thread->gc_wait_queue_head);
 589                         }
 590                 } else {
 591                         return -EINVAL;
 592                 }
 593                 return count;
 594         }
 595         if (!strcmp(a->attr.name, "gc_idle")) {
 596                 if (t == GC_IDLE_CB) {
 597                         sbi->gc_mode = GC_IDLE_CB;
 598                 } else if (t == GC_IDLE_GREEDY) {
 599                         sbi->gc_mode = GC_IDLE_GREEDY;
 600                 } else if (t == GC_IDLE_AT) {
 601                         if (!sbi->am.atgc_enabled)
 602                                 return -EINVAL;
 603                         sbi->gc_mode = GC_IDLE_AT;
 604                 } else {
 605                         sbi->gc_mode = GC_NORMAL;
 606                 }
 607                 return count;
 608         }
 609
 610         if (!strcmp(a->attr.name, "gc_remaining_trials")) {
 611                 spin_lock(&sbi->gc_remaining_trials_lock);
 612                 sbi->gc_remaining_trials = t;
 613                 spin_unlock(&sbi->gc_remaining_trials_lock);
 614
 615                 return count;
 616         }
 617
 618 #ifdef CONFIG_F2FS_IOSTAT
 619         if (!strcmp(a->attr.name, "iostat_enable")) {
 620                 sbi->iostat_enable = !!t;
 621                 if (!sbi->iostat_enable)
 622                         f2fs_reset_iostat(sbi);
 623                 return count;
 624         }
 625
 626         if (!strcmp(a->attr.name, "iostat_period_ms")) {
 627                 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS)
 628                         return -EINVAL;
 629                 spin_lock_irq(&sbi->iostat_lock);
 630                 sbi->iostat_period_ms = (unsigned int)t;
 631                 spin_unlock_irq(&sbi->iostat_lock);
 632                 return count;
 633         }
 634 #endif
 635
 636 #ifdef CONFIG_BLK_DEV_ZONED
 637         if (!strcmp(a->attr.name, "blkzone_alloc_policy")) {
 638                 if (t < BLKZONE_ALLOC_PRIOR_SEQ || t > BLKZONE_ALLOC_PRIOR_CONV)
 639                         return -EINVAL;
 640                 sbi->blkzone_alloc_policy = t;
 641                 return count;
 642         }
 643 #endif
 644
 645 #ifdef CONFIG_F2FS_FS_COMPRESSION
 646         if (!strcmp(a->attr.name, "compr_written_block") ||
 647                 !strcmp(a->attr.name, "compr_saved_block")) {
 648                 if (t != 0)
 649                         return -EINVAL;
 650                 sbi->compr_written_block = 0;
 651                 sbi->compr_saved_block = 0;
 652                 return count;
 653         }
 654
 655         if (!strcmp(a->attr.name, "compr_new_inode")) {
 656                 if (t != 0)
 657                         return -EINVAL;
 658                 sbi->compr_new_inode = 0;
 659                 return count;
 660         }
 661
 662         if (!strcmp(a->attr.name, "compress_percent")) {
 663                 if (t == 0 || t > 100)
 664                         return -EINVAL;
 665                 *ui = t;
 666                 return count;
 667         }
 668
 669         if (!strcmp(a->attr.name, "compress_watermark")) {
 670                 if (t == 0 || t > 100)
 671                         return -EINVAL;
 672                 *ui = t;
 673                 return count;
 674         }
 675 #endif
 676
 677         if (!strcmp(a->attr.name, "atgc_candidate_ratio")) {
 678                 if (t > 100)
 679                         return -EINVAL;
 680                 sbi->am.candidate_ratio = t;
 681                 return count;
 682         }
 683
 684         if (!strcmp(a->attr.name, "atgc_age_weight")) {
 685                 if (t > 100)
 686                         return -EINVAL;
 687                 sbi->am.age_weight = t;
 688                 return count;
 689         }
 690
 691         if (!strcmp(a->attr.name, "gc_segment_mode")) {
 692                 if (t < MAX_GC_MODE)
 693                         sbi->gc_segment_mode = t;
 694                 else
 695                         return -EINVAL;
 696                 return count;
 697         }
 698
 699         if (!strcmp(a->attr.name, "gc_pin_file_threshold")) {
 700                 if (t > MAX_GC_FAILED_PINNED_FILES)
 701                         return -EINVAL;
 702                 sbi->gc_pin_file_threshold = t;
 703                 return count;
 704         }
 705
 706         if (!strcmp(a->attr.name, "gc_reclaimed_segments")) {
 707                 if (t != 0)
 708                         return -EINVAL;
 709                 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0;
 710                 return count;
 711         }
 712
 713         if (!strcmp(a->attr.name, "seq_file_ra_mul")) {
 714                 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL)
 715                         sbi->seq_file_ra_mul = t;
 716                 else
 717                         return -EINVAL;
 718                 return count;
 719         }
 720
 721         if (!strcmp(a->attr.name, "max_fragment_chunk")) {
 722                 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
 723                         sbi->max_fragment_chunk = t;
 724                 else
 725                         return -EINVAL;
 726                 return count;
 727         }
 728
 729         if (!strcmp(a->attr.name, "max_fragment_hole")) {
 730                 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE)
 731                         sbi->max_fragment_hole = t;
 732                 else
 733                         return -EINVAL;
 734                 return count;
 735         }
 736
 737         if (!strcmp(a->attr.name, "peak_atomic_write")) {
 738                 if (t != 0)
 739                         return -EINVAL;
 740                 sbi->peak_atomic_write = 0;
 741                 return count;
 742         }
 743
 744         if (!strcmp(a->attr.name, "committed_atomic_block")) {
 745                 if (t != 0)
 746                         return -EINVAL;
 747                 sbi->committed_atomic_block = 0;
 748                 return count;
 749         }
 750
 751         if (!strcmp(a->attr.name, "revoked_atomic_block")) {
 752                 if (t != 0)
 753                         return -EINVAL;
 754                 sbi->revoked_atomic_block = 0;
 755                 return count;
 756         }
 757
 758         if (!strcmp(a->attr.name, "readdir_ra")) {
 759                 sbi->readdir_ra = !!t;
 760                 return count;
 761         }
 762
 763         if (!strcmp(a->attr.name, "hot_data_age_threshold")) {
 764                 if (t == 0 || t >= sbi->warm_data_age_threshold)
 765                         return -EINVAL;
 766                 if (t == *ui)
 767                         return count;
 768                 *ui = (unsigned int)t;
 769                 return count;
 770         }
 771
 772         if (!strcmp(a->attr.name, "warm_data_age_threshold")) {
 773                 if (t <= sbi->hot_data_age_threshold)
 774                         return -EINVAL;
 775                 if (t == *ui)
 776                         return count;
 777                 *ui = (unsigned int)t;
 778                 return count;
 779         }
 780
 781         if (!strcmp(a->attr.name, "last_age_weight")) {
 782                 if (t > 100)
 783                         return -EINVAL;
 784                 if (t == *ui)
 785                         return count;
 786                 *ui = (unsigned int)t;
 787                 return count;
 788         }
 789
 790         if (!strcmp(a->attr.name, "max_read_extent_count")) {
 791                 if (t > UINT_MAX)
 792                         return -EINVAL;
 793                 *ui = (unsigned int)t;
 794                 return count;
 795         }
 796
 797         if (!strcmp(a->attr.name, "ipu_policy")) {
 798                 if (t >= BIT(F2FS_IPU_MAX))
 799                         return -EINVAL;
 800                 /* allow F2FS_IPU_NOCACHE only for IPU in the pinned file */
 801                 if (f2fs_lfs_mode(sbi) && (t & ~BIT(F2FS_IPU_NOCACHE)))
 802                         return -EINVAL;
 803                 SM_I(sbi)->ipu_policy = (unsigned int)t;
 804                 return count;
 805         }
 806
 807         if (!strcmp(a->attr.name, "dir_level")) {
 808                 if (t > MAX_DIR_HASH_DEPTH)
 809                         return -EINVAL;
 810                 sbi->dir_level = t;
 811                 return count;
 812         }
 813
 814         *ui = (unsigned int)t;
 815
 816         return count;
 817 }
 818
 819 static ssize_t f2fs_sbi_store(struct f2fs_attr *a,
 820                         struct f2fs_sb_info *sbi,
 821                         const char *buf, size_t count)
 822 {
 823         ssize_t ret;
 824         bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") ||
 825                                         a->struct_type == GC_THREAD);
 826
 827         if (gc_entry) {
 828                 if (!down_read_trylock(&sbi->sb->s_umount))
 829                         return -EAGAIN;
 830         }
 831         ret = __sbi_store(a, sbi, buf, count);
 832         if (gc_entry)
 833                 up_read(&sbi->sb->s_umount);
 834
 835         return ret;
 836 }
 837
 838 static ssize_t f2fs_attr_show(struct kobject *kobj,
 839                                 struct attribute *attr, char *buf)
 840 {
 841         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
 842                                                                 s_kobj);
 843         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
 844
 845         return a->show ? a->show(a, sbi, buf) : 0;
 846 }
 847
 848 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr,
 849                                                 const char *buf, size_t len)
 850 {
 851         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
 852                                                                         s_kobj);
 853         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
 854
 855         return a->store ? a->store(a, sbi, buf, len) : 0;
 856 }
 857
 858 static void f2fs_sb_release(struct kobject *kobj)
 859 {
 860         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
 861                                                                 s_kobj);
 862         complete(&sbi->s_kobj_unregister);
 863 }
 864
 865 /*
 866  * Note that there are three feature list entries:
 867  * 1) /sys/fs/f2fs/features
 868  *   : shows runtime features supported by in-kernel f2fs along with Kconfig.
 869  *     - ref. F2FS_FEATURE_RO_ATTR()
 870  *
 871  * 2) /sys/fs/f2fs/$s_id/features <deprecated>
 872  *   : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This
 873  *     won't add new feature anymore, and thus, users should check entries in 3)
 874  *     instead of this 2).
 875  *
 876  * 3) /sys/fs/f2fs/$s_id/feature_list
 877  *   : shows on-disk features enabled by mkfs.f2fs per instance, which follows
 878  *     sysfs entry rule where each entry should expose single value.
 879  *     This list covers old feature list provided by 2) and beyond. Therefore,
 880  *     please add new on-disk feature in this list only.
 881  *     - ref. F2FS_SB_FEATURE_RO_ATTR()
 882  */
 883 static ssize_t f2fs_feature_show(struct f2fs_attr *a,
 884                 struct f2fs_sb_info *sbi, char *buf)
 885 {
 886         return sysfs_emit(buf, "supported\n");
 887 }
 888
 889 #define F2FS_FEATURE_RO_ATTR(_name)                             \
 890 static struct f2fs_attr f2fs_attr_##_name = {                   \
 891         .attr = {.name = __stringify(_name), .mode = 0444 },    \
 892         .show   = f2fs_feature_show,                            \
 893 }
 894
 895 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a,
 896                 struct f2fs_sb_info *sbi, char *buf)
 897 {
 898         if (F2FS_HAS_FEATURE(sbi, a->id))
 899                 return sysfs_emit(buf, "supported\n");
 900         return sysfs_emit(buf, "unsupported\n");
 901 }
 902
 903 #define F2FS_SB_FEATURE_RO_ATTR(_name, _feat)                   \
 904 static struct f2fs_attr f2fs_attr_sb_##_name = {                \
 905         .attr = {.name = __stringify(_name), .mode = 0444 },    \
 906         .show   = f2fs_sb_feature_show,                         \
 907         .id     = F2FS_FEATURE_##_feat,                         \
 908 }
 909
 910 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
 911 static struct f2fs_attr f2fs_attr_##_name = {                   \
 912         .attr = {.name = __stringify(_name), .mode = _mode },   \
 913         .show   = _show,                                        \
 914         .store  = _store,                                       \
 915         .struct_type = _struct_type,                            \
 916         .offset = _offset                                       \
 917 }
 918
 919 #define F2FS_RO_ATTR(struct_type, struct_name, name, elname)    \
 920         F2FS_ATTR_OFFSET(struct_type, name, 0444,               \
 921                 f2fs_sbi_show, NULL,                            \
 922                 offsetof(struct struct_name, elname))
 923
 924 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname)    \
 925         F2FS_ATTR_OFFSET(struct_type, name, 0644,               \
 926                 f2fs_sbi_show, f2fs_sbi_store,                  \
 927                 offsetof(struct struct_name, elname))
 928
 929 #define F2FS_GENERAL_RO_ATTR(name) \
 930 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
 931
 932 #ifdef CONFIG_F2FS_STAT_FS
 933 #define STAT_INFO_RO_ATTR(name, elname)                         \
 934         F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname)
 935 #endif
 936
 937 #define GC_THREAD_RW_ATTR(name, elname)                         \
 938         F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname)
 939
 940 #define SM_INFO_RW_ATTR(name, elname)                           \
 941         F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname)
 942
 943 #define SM_INFO_GENERAL_RW_ATTR(elname)                         \
 944         SM_INFO_RW_ATTR(elname, elname)
 945
 946 #define DCC_INFO_RW_ATTR(name, elname)                          \
 947         F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname)
 948
 949 #define DCC_INFO_GENERAL_RW_ATTR(elname)                        \
 950         DCC_INFO_RW_ATTR(elname, elname)
 951
 952 #define NM_INFO_RW_ATTR(name, elname)                           \
 953         F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname)
 954
 955 #define NM_INFO_GENERAL_RW_ATTR(elname)                         \
 956         NM_INFO_RW_ATTR(elname, elname)
 957
 958 #define F2FS_SBI_RW_ATTR(name, elname)                          \
 959         F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname)
 960
 961 #define F2FS_SBI_GENERAL_RW_ATTR(elname)                        \
 962         F2FS_SBI_RW_ATTR(elname, elname)
 963
 964 #define F2FS_SBI_GENERAL_RO_ATTR(elname)                        \
 965         F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname)
 966
 967 #ifdef CONFIG_F2FS_FAULT_INJECTION
 968 #define FAULT_INFO_GENERAL_RW_ATTR(type, elname)                \
 969         F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname)
 970 #endif
 971
 972 #define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname)                 \
 973         F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname)
 974
 975 #define CPRC_INFO_GENERAL_RW_ATTR(elname)                       \
 976         F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname)
 977
 978 #define ATGC_INFO_RW_ATTR(name, elname)                         \
 979         F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname)
 980
 981 /* GC_THREAD ATTR */
 982 GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time);
 983 GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time);
 984 GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time);
 985 GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time);
 986 GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent);
 987 GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent);
 988 GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio);
 989
 990 /* SM_INFO ATTR */
 991 SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments);
 992 SM_INFO_GENERAL_RW_ATTR(ipu_policy);
 993 SM_INFO_GENERAL_RW_ATTR(min_ipu_util);
 994 SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks);
 995 SM_INFO_GENERAL_RW_ATTR(min_seq_blocks);
 996 SM_INFO_GENERAL_RW_ATTR(min_hot_blocks);
 997 SM_INFO_GENERAL_RW_ATTR(min_ssr_sections);
 998 SM_INFO_GENERAL_RW_ATTR(reserved_segments);
 999
1000 /* DCC_INFO ATTR */
1001 DCC_INFO_RW_ATTR(max_small_discards, max_discards);
1002 DCC_INFO_GENERAL_RW_ATTR(max_discard_request);
1003 DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time);
1004 DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time);
1005 DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time);
1006 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran);
1007 DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util);
1008 DCC_INFO_GENERAL_RW_ATTR(discard_granularity);
1009 DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard);
1010 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware);
1011
1012 /* NM_INFO ATTR */
1013 NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks);
1014 NM_INFO_GENERAL_RW_ATTR(ram_thresh);
1015 NM_INFO_GENERAL_RW_ATTR(ra_nid_pages);
1016 NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio);
1017
1018 /* F2FS_SBI ATTR */
1019 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list);
1020 F2FS_SBI_RW_ATTR(gc_idle, gc_mode);
1021 F2FS_SBI_RW_ATTR(gc_urgent, gc_mode);
1022 F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]);
1023 F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]);
1024 F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]);
1025 F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]);
1026 F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]);
1027 F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold);
1028 F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs);
1029 F2FS_SBI_GENERAL_RW_ATTR(max_victim_search);
1030 F2FS_SBI_GENERAL_RW_ATTR(migration_granularity);
1031 F2FS_SBI_GENERAL_RW_ATTR(migration_window_granularity);
1032 F2FS_SBI_GENERAL_RW_ATTR(dir_level);
1033 #ifdef CONFIG_F2FS_IOSTAT
1034 F2FS_SBI_GENERAL_RW_ATTR(iostat_enable);
1035 F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms);
1036 #endif
1037 F2FS_SBI_GENERAL_RW_ATTR(readdir_ra);
1038 F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes);
1039 F2FS_SBI_GENERAL_RW_ATTR(data_io_flag);
1040 F2FS_SBI_GENERAL_RW_ATTR(node_io_flag);
1041 F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials);
1042 F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul);
1043 F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode);
1044 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk);
1045 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole);
1046 #ifdef CONFIG_F2FS_FS_COMPRESSION
1047 F2FS_SBI_GENERAL_RW_ATTR(compr_written_block);
1048 F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block);
1049 F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode);
1050 F2FS_SBI_GENERAL_RW_ATTR(compress_percent);
1051 F2FS_SBI_GENERAL_RW_ATTR(compress_watermark);
1052 #endif
1053 /* atomic write */
1054 F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write);
1055 F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write);
1056 F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block);
1057 F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block);
1058 /* block age extent cache */
1059 F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold);
1060 F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold);
1061 F2FS_SBI_GENERAL_RW_ATTR(last_age_weight);
1062 /* read extent cache */
1063 F2FS_SBI_GENERAL_RW_ATTR(max_read_extent_count);
1064 #ifdef CONFIG_BLK_DEV_ZONED
1065 F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec);
1066 F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy);
1067 #endif
1068
1069 /* STAT_INFO ATTR */
1070 #ifdef CONFIG_F2FS_STAT_FS
1071 STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]);
1072 STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]);
1073 STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]);
1074 STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]);
1075 #endif
1076
1077 /* FAULT_INFO ATTR */
1078 #ifdef CONFIG_F2FS_FAULT_INJECTION
1079 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate);
1080 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type);
1081 #endif
1082
1083 /* RESERVED_BLOCKS ATTR */
1084 RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks);
1085
1086 /* CPRC_INFO ATTR */
1087 CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio);
1088
1089 /* ATGC_INFO ATTR */
1090 ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio);
1091 ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count);
1092 ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight);
1093 ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold);
1094
1095 F2FS_GENERAL_RO_ATTR(dirty_segments);
1096 F2FS_GENERAL_RO_ATTR(free_segments);
1097 F2FS_GENERAL_RO_ATTR(ovp_segments);
1098 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes);
1099 F2FS_GENERAL_RO_ATTR(features);
1100 F2FS_GENERAL_RO_ATTR(current_reserved_blocks);
1101 F2FS_GENERAL_RO_ATTR(unusable);
1102 F2FS_GENERAL_RO_ATTR(encoding);
1103 F2FS_GENERAL_RO_ATTR(mounted_time_sec);
1104 F2FS_GENERAL_RO_ATTR(main_blkaddr);
1105 F2FS_GENERAL_RO_ATTR(pending_discard);
1106 F2FS_GENERAL_RO_ATTR(atgc_enabled);
1107 F2FS_GENERAL_RO_ATTR(gc_mode);
1108 #ifdef CONFIG_F2FS_STAT_FS
1109 F2FS_GENERAL_RO_ATTR(moved_blocks_background);
1110 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground);
1111 F2FS_GENERAL_RO_ATTR(avg_vblocks);
1112 #endif
1113
1114 #ifdef CONFIG_FS_ENCRYPTION
1115 F2FS_FEATURE_RO_ATTR(encryption);
1116 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2);
1117 #if IS_ENABLED(CONFIG_UNICODE)
1118 F2FS_FEATURE_RO_ATTR(encrypted_casefold);
1119 #endif
1120 #endif /* CONFIG_FS_ENCRYPTION */
1121 #ifdef CONFIG_BLK_DEV_ZONED
1122 F2FS_FEATURE_RO_ATTR(block_zoned);
1123 #endif
1124 F2FS_FEATURE_RO_ATTR(atomic_write);
1125 F2FS_FEATURE_RO_ATTR(extra_attr);
1126 F2FS_FEATURE_RO_ATTR(project_quota);
1127 F2FS_FEATURE_RO_ATTR(inode_checksum);
1128 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr);
1129 F2FS_FEATURE_RO_ATTR(quota_ino);
1130 F2FS_FEATURE_RO_ATTR(inode_crtime);
1131 F2FS_FEATURE_RO_ATTR(lost_found);
1132 #ifdef CONFIG_FS_VERITY
1133 F2FS_FEATURE_RO_ATTR(verity);
1134 #endif
1135 F2FS_FEATURE_RO_ATTR(sb_checksum);
1136 #if IS_ENABLED(CONFIG_UNICODE)
1137 F2FS_FEATURE_RO_ATTR(casefold);
1138 #endif
1139 F2FS_FEATURE_RO_ATTR(readonly);
1140 #ifdef CONFIG_F2FS_FS_COMPRESSION
1141 F2FS_FEATURE_RO_ATTR(compression);
1142 #endif
1143 F2FS_FEATURE_RO_ATTR(pin_file);
1144
1145 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
1146 static struct attribute *f2fs_attrs[] = {
1147         ATTR_LIST(gc_urgent_sleep_time),
1148         ATTR_LIST(gc_min_sleep_time),
1149         ATTR_LIST(gc_max_sleep_time),
1150         ATTR_LIST(gc_no_gc_sleep_time),
1151         ATTR_LIST(gc_no_zoned_gc_percent),
1152         ATTR_LIST(gc_boost_zoned_gc_percent),
1153         ATTR_LIST(gc_valid_thresh_ratio),
1154         ATTR_LIST(gc_idle),
1155         ATTR_LIST(gc_urgent),
1156         ATTR_LIST(reclaim_segments),
1157         ATTR_LIST(main_blkaddr),
1158         ATTR_LIST(max_small_discards),
1159         ATTR_LIST(max_discard_request),
1160         ATTR_LIST(min_discard_issue_time),
1161         ATTR_LIST(mid_discard_issue_time),
1162         ATTR_LIST(max_discard_issue_time),
1163         ATTR_LIST(discard_io_aware_gran),
1164         ATTR_LIST(discard_urgent_util),
1165         ATTR_LIST(discard_granularity),
1166         ATTR_LIST(max_ordered_discard),
1167         ATTR_LIST(discard_io_aware),
1168         ATTR_LIST(pending_discard),
1169         ATTR_LIST(gc_mode),
1170         ATTR_LIST(ipu_policy),
1171         ATTR_LIST(min_ipu_util),
1172         ATTR_LIST(min_fsync_blocks),
1173         ATTR_LIST(min_seq_blocks),
1174         ATTR_LIST(min_hot_blocks),
1175         ATTR_LIST(min_ssr_sections),
1176         ATTR_LIST(reserved_segments),
1177         ATTR_LIST(max_victim_search),
1178         ATTR_LIST(migration_granularity),
1179         ATTR_LIST(migration_window_granularity),
1180         ATTR_LIST(dir_level),
1181         ATTR_LIST(ram_thresh),
1182         ATTR_LIST(ra_nid_pages),
1183         ATTR_LIST(dirty_nats_ratio),
1184         ATTR_LIST(max_roll_forward_node_blocks),
1185         ATTR_LIST(cp_interval),
1186         ATTR_LIST(idle_interval),
1187         ATTR_LIST(discard_idle_interval),
1188         ATTR_LIST(gc_idle_interval),
1189         ATTR_LIST(umount_discard_timeout),
1190 #ifdef CONFIG_F2FS_IOSTAT
1191         ATTR_LIST(iostat_enable),
1192         ATTR_LIST(iostat_period_ms),
1193 #endif
1194         ATTR_LIST(readdir_ra),
1195         ATTR_LIST(max_io_bytes),
1196         ATTR_LIST(gc_pin_file_thresh),
1197         ATTR_LIST(extension_list),
1198 #ifdef CONFIG_F2FS_FAULT_INJECTION
1199         ATTR_LIST(inject_rate),
1200         ATTR_LIST(inject_type),
1201 #endif
1202         ATTR_LIST(data_io_flag),
1203         ATTR_LIST(node_io_flag),
1204         ATTR_LIST(gc_remaining_trials),
1205         ATTR_LIST(ckpt_thread_ioprio),
1206         ATTR_LIST(dirty_segments),
1207         ATTR_LIST(free_segments),
1208         ATTR_LIST(ovp_segments),
1209         ATTR_LIST(unusable),
1210         ATTR_LIST(lifetime_write_kbytes),
1211         ATTR_LIST(features),
1212         ATTR_LIST(reserved_blocks),
1213         ATTR_LIST(current_reserved_blocks),
1214         ATTR_LIST(encoding),
1215         ATTR_LIST(mounted_time_sec),
1216 #ifdef CONFIG_F2FS_STAT_FS
1217         ATTR_LIST(cp_foreground_calls),
1218         ATTR_LIST(cp_background_calls),
1219         ATTR_LIST(gc_foreground_calls),
1220         ATTR_LIST(gc_background_calls),
1221         ATTR_LIST(moved_blocks_foreground),
1222         ATTR_LIST(moved_blocks_background),
1223         ATTR_LIST(avg_vblocks),
1224 #endif
1225 #ifdef CONFIG_BLK_DEV_ZONED
1226         ATTR_LIST(unusable_blocks_per_sec),
1227         ATTR_LIST(blkzone_alloc_policy),
1228 #endif
1229 #ifdef CONFIG_F2FS_FS_COMPRESSION
1230         ATTR_LIST(compr_written_block),
1231         ATTR_LIST(compr_saved_block),
1232         ATTR_LIST(compr_new_inode),
1233         ATTR_LIST(compress_percent),
1234         ATTR_LIST(compress_watermark),
1235 #endif
1236         /* For ATGC */
1237         ATTR_LIST(atgc_candidate_ratio),
1238         ATTR_LIST(atgc_candidate_count),
1239         ATTR_LIST(atgc_age_weight),
1240         ATTR_LIST(atgc_age_threshold),
1241         ATTR_LIST(atgc_enabled),
1242         ATTR_LIST(seq_file_ra_mul),
1243         ATTR_LIST(gc_segment_mode),
1244         ATTR_LIST(gc_reclaimed_segments),
1245         ATTR_LIST(max_fragment_chunk),
1246         ATTR_LIST(max_fragment_hole),
1247         ATTR_LIST(current_atomic_write),
1248         ATTR_LIST(peak_atomic_write),
1249         ATTR_LIST(committed_atomic_block),
1250         ATTR_LIST(revoked_atomic_block),
1251         ATTR_LIST(hot_data_age_threshold),
1252         ATTR_LIST(warm_data_age_threshold),
1253         ATTR_LIST(last_age_weight),
1254         ATTR_LIST(max_read_extent_count),
1255         NULL,
1256 };
1257 ATTRIBUTE_GROUPS(f2fs);
1258
1259 static struct attribute *f2fs_feat_attrs[] = {
1260 #ifdef CONFIG_FS_ENCRYPTION
1261         ATTR_LIST(encryption),
1262         ATTR_LIST(test_dummy_encryption_v2),
1263 #if IS_ENABLED(CONFIG_UNICODE)
1264         ATTR_LIST(encrypted_casefold),
1265 #endif
1266 #endif /* CONFIG_FS_ENCRYPTION */
1267 #ifdef CONFIG_BLK_DEV_ZONED
1268         ATTR_LIST(block_zoned),
1269 #endif
1270         ATTR_LIST(atomic_write),
1271         ATTR_LIST(extra_attr),
1272         ATTR_LIST(project_quota),
1273         ATTR_LIST(inode_checksum),
1274         ATTR_LIST(flexible_inline_xattr),
1275         ATTR_LIST(quota_ino),
1276         ATTR_LIST(inode_crtime),
1277         ATTR_LIST(lost_found),
1278 #ifdef CONFIG_FS_VERITY
1279         ATTR_LIST(verity),
1280 #endif
1281         ATTR_LIST(sb_checksum),
1282 #if IS_ENABLED(CONFIG_UNICODE)
1283         ATTR_LIST(casefold),
1284 #endif
1285         ATTR_LIST(readonly),
1286 #ifdef CONFIG_F2FS_FS_COMPRESSION
1287         ATTR_LIST(compression),
1288 #endif
1289         ATTR_LIST(pin_file),
1290         NULL,
1291 };
1292 ATTRIBUTE_GROUPS(f2fs_feat);
1293
1294 F2FS_GENERAL_RO_ATTR(sb_status);
1295 F2FS_GENERAL_RO_ATTR(cp_status);
1296 F2FS_GENERAL_RO_ATTR(issued_discard);
1297 F2FS_GENERAL_RO_ATTR(queued_discard);
1298 F2FS_GENERAL_RO_ATTR(undiscard_blks);
1299
1300 static struct attribute *f2fs_stat_attrs[] = {
1301         ATTR_LIST(sb_status),
1302         ATTR_LIST(cp_status),
1303         ATTR_LIST(issued_discard),
1304         ATTR_LIST(queued_discard),
1305         ATTR_LIST(undiscard_blks),
1306         NULL,
1307 };
1308 ATTRIBUTE_GROUPS(f2fs_stat);
1309
1310 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT);
1311 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED);
1312 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR);
1313 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA);
1314 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM);
1315 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
1316 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO);
1317 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME);
1318 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND);
1319 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY);
1320 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM);
1321 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD);
1322 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION);
1323 F2FS_SB_FEATURE_RO_ATTR(readonly, RO);
1324 F2FS_SB_FEATURE_RO_ATTR(device_alias, DEVICE_ALIAS);
1325
1326 static struct attribute *f2fs_sb_feat_attrs[] = {
1327         ATTR_LIST(sb_encryption),
1328         ATTR_LIST(sb_block_zoned),
1329         ATTR_LIST(sb_extra_attr),
1330         ATTR_LIST(sb_project_quota),
1331         ATTR_LIST(sb_inode_checksum),
1332         ATTR_LIST(sb_flexible_inline_xattr),
1333         ATTR_LIST(sb_quota_ino),
1334         ATTR_LIST(sb_inode_crtime),
1335         ATTR_LIST(sb_lost_found),
1336         ATTR_LIST(sb_verity),
1337         ATTR_LIST(sb_sb_checksum),
1338         ATTR_LIST(sb_casefold),
1339         ATTR_LIST(sb_compression),
1340         ATTR_LIST(sb_readonly),
1341         ATTR_LIST(sb_device_alias),
1342         NULL,
1343 };
1344 ATTRIBUTE_GROUPS(f2fs_sb_feat);
1345
1346 static const struct sysfs_ops f2fs_attr_ops = {
1347         .show   = f2fs_attr_show,
1348         .store  = f2fs_attr_store,
1349 };
1350
1351 static const struct kobj_type f2fs_sb_ktype = {
1352         .default_groups = f2fs_groups,
1353         .sysfs_ops      = &f2fs_attr_ops,
1354         .release        = f2fs_sb_release,
1355 };
1356
1357 static const struct kobj_type f2fs_ktype = {
1358         .sysfs_ops      = &f2fs_attr_ops,
1359 };
1360
1361 static struct kset f2fs_kset = {
1362         .kobj   = {.ktype = &f2fs_ktype},
1363 };
1364
1365 static const struct kobj_type f2fs_feat_ktype = {
1366         .default_groups = f2fs_feat_groups,
1367         .sysfs_ops      = &f2fs_attr_ops,
1368 };
1369
1370 static struct kobject f2fs_feat = {
1371         .kset   = &f2fs_kset,
1372 };
1373
1374 static ssize_t f2fs_stat_attr_show(struct kobject *kobj,
1375                                 struct attribute *attr, char *buf)
1376 {
1377         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1378                                                                 s_stat_kobj);
1379         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1380
1381         return a->show ? a->show(a, sbi, buf) : 0;
1382 }
1383
1384 static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr,
1385                                                 const char *buf, size_t len)
1386 {
1387         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1388                                                                 s_stat_kobj);
1389         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1390
1391         return a->store ? a->store(a, sbi, buf, len) : 0;
1392 }
1393
1394 static void f2fs_stat_kobj_release(struct kobject *kobj)
1395 {
1396         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1397                                                                 s_stat_kobj);
1398         complete(&sbi->s_stat_kobj_unregister);
1399 }
1400
1401 static const struct sysfs_ops f2fs_stat_attr_ops = {
1402         .show   = f2fs_stat_attr_show,
1403         .store  = f2fs_stat_attr_store,
1404 };
1405
1406 static const struct kobj_type f2fs_stat_ktype = {
1407         .default_groups = f2fs_stat_groups,
1408         .sysfs_ops      = &f2fs_stat_attr_ops,
1409         .release        = f2fs_stat_kobj_release,
1410 };
1411
1412 static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj,
1413                                 struct attribute *attr, char *buf)
1414 {
1415         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1416                                                         s_feature_list_kobj);
1417         struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr);
1418
1419         return a->show ? a->show(a, sbi, buf) : 0;
1420 }
1421
1422 static void f2fs_feature_list_kobj_release(struct kobject *kobj)
1423 {
1424         struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info,
1425                                                         s_feature_list_kobj);
1426         complete(&sbi->s_feature_list_kobj_unregister);
1427 }
1428
1429 static const struct sysfs_ops f2fs_feature_list_attr_ops = {
1430         .show   = f2fs_sb_feat_attr_show,
1431 };
1432
1433 static const struct kobj_type f2fs_feature_list_ktype = {
1434         .default_groups = f2fs_sb_feat_groups,
1435         .sysfs_ops      = &f2fs_feature_list_attr_ops,
1436         .release        = f2fs_feature_list_kobj_release,
1437 };
1438
1439 static int __maybe_unused segment_info_seq_show(struct seq_file *seq,
1440                                                 void *offset)
1441 {
1442         struct super_block *sb = seq->private;
1443         struct f2fs_sb_info *sbi = F2FS_SB(sb);
1444         unsigned int total_segs =
1445                         le32_to_cpu(sbi->raw_super->segment_count_main);
1446         int i;
1447
1448         seq_puts(seq, "format: segment_type|valid_blocks\n"
1449                 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1450
1451         for (i = 0; i < total_segs; i++) {
1452                 struct seg_entry *se = get_seg_entry(sbi, i);
1453
1454                 if ((i % 10) == 0)
1455                         seq_printf(seq, "%-10d", i);
1456                 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks);
1457                 if ((i % 10) == 9 || i == (total_segs - 1))
1458                         seq_putc(seq, '\n');
1459                 else
1460                         seq_putc(seq, ' ');
1461         }
1462
1463         return 0;
1464 }
1465
1466 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq,
1467                                                 void *offset)
1468 {
1469         struct super_block *sb = seq->private;
1470         struct f2fs_sb_info *sbi = F2FS_SB(sb);
1471         unsigned int total_segs =
1472                         le32_to_cpu(sbi->raw_super->segment_count_main);
1473         int i, j;
1474
1475         seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n"
1476                 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1477
1478         for (i = 0; i < total_segs; i++) {
1479                 struct seg_entry *se = get_seg_entry(sbi, i);
1480
1481                 seq_printf(seq, "%-10d", i);
1482                 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks);
1483                 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++)
1484                         seq_printf(seq, " %.2x", se->cur_valid_map[j]);
1485                 seq_putc(seq, '\n');
1486         }
1487         return 0;
1488 }
1489
1490 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq,
1491                                                 void *offset)
1492 {
1493         struct super_block *sb = seq->private;
1494         struct f2fs_sb_info *sbi = F2FS_SB(sb);
1495         struct dirty_seglist_info *dirty_i = DIRTY_I(sbi);
1496         int i;
1497
1498         seq_puts(seq, "format: victim_secmap bitmaps\n");
1499
1500         for (i = 0; i < MAIN_SECS(sbi); i++) {
1501                 if ((i % 10) == 0)
1502                         seq_printf(seq, "%-10d", i);
1503                 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0);
1504                 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1))
1505                         seq_putc(seq, '\n');
1506                 else
1507                         seq_putc(seq, ' ');
1508         }
1509         return 0;
1510 }
1511
1512 static int __maybe_unused discard_plist_seq_show(struct seq_file *seq,
1513                                                 void *offset)
1514 {
1515         struct super_block *sb = seq->private;
1516         struct f2fs_sb_info *sbi = F2FS_SB(sb);
1517         struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info;
1518         int i, count;
1519
1520         seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n");
1521         if (!f2fs_realtime_discard_enable(sbi))
1522                 return 0;
1523
1524         if (dcc) {
1525                 mutex_lock(&dcc->cmd_lock);
1526                 for (i = 0; i < MAX_PLIST_NUM; i++) {
1527                         struct list_head *pend_list;
1528                         struct discard_cmd *dc, *tmp;
1529
1530                         if (i % 8 == 0)
1531                                 seq_printf(seq, "  %-3d", i);
1532                         count = 0;
1533                         pend_list = &dcc->pend_list[i];
1534                         list_for_each_entry_safe(dc, tmp, pend_list, list)
1535                                 count++;
1536                         if (count)
1537                                 seq_printf(seq, " %7d", count);
1538                         else
1539                                 seq_puts(seq, "       .");
1540                         if (i % 8 == 7)
1541                                 seq_putc(seq, '\n');
1542                 }
1543                 seq_putc(seq, '\n');
1544                 mutex_unlock(&dcc->cmd_lock);
1545         }
1546
1547         return 0;
1548 }
1549
1550 static int __maybe_unused disk_map_seq_show(struct seq_file *seq,
1551                                                 void *offset)
1552 {
1553         struct super_block *sb = seq->private;
1554         struct f2fs_sb_info *sbi = F2FS_SB(sb);
1555         int i;
1556
1557         seq_printf(seq, "Address Layout   : %5luB Block address (# of Segments)\n",
1558                                         F2FS_BLKSIZE);
1559         seq_printf(seq, " SB            : %12s\n", "0/1024B");
1560         seq_printf(seq, " seg0_blkaddr  : 0x%010x\n", SEG0_BLKADDR(sbi));
1561         seq_printf(seq, " Checkpoint    : 0x%010x (%10d)\n",
1562                         le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2);
1563         seq_printf(seq, " SIT           : 0x%010x (%10d)\n",
1564                         SIT_I(sbi)->sit_base_addr,
1565                         le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit));
1566         seq_printf(seq, " NAT           : 0x%010x (%10d)\n",
1567                         NM_I(sbi)->nat_blkaddr,
1568                         le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat));
1569         seq_printf(seq, " SSA           : 0x%010x (%10d)\n",
1570                         SM_I(sbi)->ssa_blkaddr,
1571                         le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa));
1572         seq_printf(seq, " Main          : 0x%010x (%10d)\n",
1573                         SM_I(sbi)->main_blkaddr,
1574                         le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main));
1575         seq_printf(seq, " # of Sections : %12d\n",
1576                         le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count));
1577         seq_printf(seq, " Segs/Sections : %12d\n",
1578                         SEGS_PER_SEC(sbi));
1579         seq_printf(seq, " Section size  : %12d MB\n",
1580                         SEGS_PER_SEC(sbi) << 1);
1581
1582         if (!f2fs_is_multi_device(sbi))
1583                 return 0;
1584
1585         seq_puts(seq, "\nDisk Map for multi devices:\n");
1586         for (i = 0; i < sbi->s_ndevs; i++)
1587                 seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n",
1588                         i, bdev_is_zoned(FDEV(i).bdev),
1589                         FDEV(i).start_blk, FDEV(i).end_blk,
1590                         FDEV(i).path);
1591         return 0;
1592 }
1593
1594 int __init f2fs_init_sysfs(void)
1595 {
1596         int ret;
1597
1598         kobject_set_name(&f2fs_kset.kobj, "f2fs");
1599         f2fs_kset.kobj.parent = fs_kobj;
1600         ret = kset_register(&f2fs_kset);
1601         if (ret)
1602                 return ret;
1603
1604         ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype,
1605                                    NULL, "features");
1606         if (ret)
1607                 goto put_kobject;
1608
1609         f2fs_proc_root = proc_mkdir("fs/f2fs", NULL);
1610         if (!f2fs_proc_root) {
1611                 ret = -ENOMEM;
1612                 goto put_kobject;
1613         }
1614
1615         return 0;
1616 put_kobject:
1617         kobject_put(&f2fs_feat);
1618         kset_unregister(&f2fs_kset);
1619         return ret;
1620 }
1621
1622 void f2fs_exit_sysfs(void)
1623 {
1624         kobject_put(&f2fs_feat);
1625         kset_unregister(&f2fs_kset);
1626         remove_proc_entry("fs/f2fs", NULL);
1627         f2fs_proc_root = NULL;
1628 }
1629
1630 int f2fs_register_sysfs(struct f2fs_sb_info *sbi)
1631 {
1632         struct super_block *sb = sbi->sb;
1633         int err;
1634
1635         sbi->s_kobj.kset = &f2fs_kset;
1636         init_completion(&sbi->s_kobj_unregister);
1637         err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL,
1638                                 "%s", sb->s_id);
1639         if (err)
1640                 goto put_sb_kobj;
1641
1642         sbi->s_stat_kobj.kset = &f2fs_kset;
1643         init_completion(&sbi->s_stat_kobj_unregister);
1644         err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype,
1645                                                 &sbi->s_kobj, "stat");
1646         if (err)
1647                 goto put_stat_kobj;
1648
1649         sbi->s_feature_list_kobj.kset = &f2fs_kset;
1650         init_completion(&sbi->s_feature_list_kobj_unregister);
1651         err = kobject_init_and_add(&sbi->s_feature_list_kobj,
1652                                         &f2fs_feature_list_ktype,
1653                                         &sbi->s_kobj, "feature_list");
1654         if (err)
1655                 goto put_feature_list_kobj;
1656
1657         sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root);
1658         if (!sbi->s_proc) {
1659                 err = -ENOMEM;
1660                 goto put_feature_list_kobj;
1661         }
1662
1663         proc_create_single_data("segment_info", 0444, sbi->s_proc,
1664                                 segment_info_seq_show, sb);
1665         proc_create_single_data("segment_bits", 0444, sbi->s_proc,
1666                                 segment_bits_seq_show, sb);
1667 #ifdef CONFIG_F2FS_IOSTAT
1668         proc_create_single_data("iostat_info", 0444, sbi->s_proc,
1669                                 iostat_info_seq_show, sb);
1670 #endif
1671         proc_create_single_data("victim_bits", 0444, sbi->s_proc,
1672                                 victim_bits_seq_show, sb);
1673         proc_create_single_data("discard_plist_info", 0444, sbi->s_proc,
1674                                 discard_plist_seq_show, sb);
1675         proc_create_single_data("disk_map", 0444, sbi->s_proc,
1676                                 disk_map_seq_show, sb);
1677         return 0;
1678 put_feature_list_kobj:
1679         kobject_put(&sbi->s_feature_list_kobj);
1680         wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1681 put_stat_kobj:
1682         kobject_put(&sbi->s_stat_kobj);
1683         wait_for_completion(&sbi->s_stat_kobj_unregister);
1684 put_sb_kobj:
1685         kobject_put(&sbi->s_kobj);
1686         wait_for_completion(&sbi->s_kobj_unregister);
1687         return err;
1688 }
1689
1690 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi)
1691 {
1692         remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root);
1693
1694         kobject_put(&sbi->s_stat_kobj);
1695         wait_for_completion(&sbi->s_stat_kobj_unregister);
1696         kobject_put(&sbi->s_feature_list_kobj);
1697         wait_for_completion(&sbi->s_feature_list_kobj_unregister);
1698
1699         kobject_put(&sbi->s_kobj);
1700         wait_for_completion(&sbi->s_kobj_unregister);
1701 }