1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * f2fs sysfs interface 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 * Copyright (c) 2017 Chao Yu <chao@kernel.org> 8 */ 9 #include <linux/compiler.h> 10 #include <linux/proc_fs.h> 11 #include <linux/f2fs_fs.h> 12 #include <linux/seq_file.h> 13 #include <linux/unicode.h> 14 #include <linux/ioprio.h> 15 #include <linux/sysfs.h> 16 17 #include "f2fs.h" 18 #include "segment.h" 19 #include "gc.h" 20 #include "iostat.h" 21 #include <trace/events/f2fs.h> 22 23 static struct proc_dir_entry *f2fs_proc_root; 24 25 /* Sysfs support for f2fs */ 26 enum { 27 GC_THREAD, /* struct f2fs_gc_thread */ 28 SM_INFO, /* struct f2fs_sm_info */ 29 DCC_INFO, /* struct discard_cmd_control */ 30 NM_INFO, /* struct f2fs_nm_info */ 31 F2FS_SBI, /* struct f2fs_sb_info */ 32 #ifdef CONFIG_F2FS_STAT_FS 33 STAT_INFO, /* struct f2fs_stat_info */ 34 #endif 35 #ifdef CONFIG_F2FS_FAULT_INJECTION 36 FAULT_INFO_RATE, /* struct f2fs_fault_info */ 37 FAULT_INFO_TYPE, /* struct f2fs_fault_info */ 38 #endif 39 RESERVED_BLOCKS, /* struct f2fs_sb_info */ 40 CPRC_INFO, /* struct ckpt_req_control */ 41 ATGC_INFO, /* struct atgc_management */ 42 }; 43 44 struct f2fs_attr { 45 struct attribute attr; 46 ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); 47 ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, 48 const char *, size_t); 49 int struct_type; 50 int offset; 51 int id; 52 }; 53 54 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 55 struct f2fs_sb_info *sbi, char *buf); 56 57 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) 58 { 59 if (struct_type == GC_THREAD) 60 return (unsigned char *)sbi->gc_thread; 61 else if (struct_type == SM_INFO) 62 return (unsigned char *)SM_I(sbi); 63 else if (struct_type == DCC_INFO) 64 return (unsigned char *)SM_I(sbi)->dcc_info; 65 else if (struct_type == NM_INFO) 66 return (unsigned char *)NM_I(sbi); 67 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS) 68 return (unsigned char *)sbi; 69 #ifdef CONFIG_F2FS_FAULT_INJECTION 70 else if (struct_type == FAULT_INFO_RATE || 71 struct_type == FAULT_INFO_TYPE) 72 return (unsigned char *)&F2FS_OPTION(sbi).fault_info; 73 #endif 74 #ifdef CONFIG_F2FS_STAT_FS 75 else if (struct_type == STAT_INFO) 76 return (unsigned char *)F2FS_STAT(sbi); 77 #endif 78 else if (struct_type == CPRC_INFO) 79 return (unsigned char *)&sbi->cprc_info; 80 else if (struct_type == ATGC_INFO) 81 return (unsigned char *)&sbi->am; 82 return NULL; 83 } 84 85 static ssize_t dirty_segments_show(struct f2fs_attr *a, 86 struct f2fs_sb_info *sbi, char *buf) 87 { 88 return sprintf(buf, "%llu\n", 89 (unsigned long long)(dirty_segments(sbi))); 90 } 91 92 static ssize_t free_segments_show(struct f2fs_attr *a, 93 struct f2fs_sb_info *sbi, char *buf) 94 { 95 return sprintf(buf, "%llu\n", 96 (unsigned long long)(free_segments(sbi))); 97 } 98 99 static ssize_t ovp_segments_show(struct f2fs_attr *a, 100 struct f2fs_sb_info *sbi, char *buf) 101 { 102 return sprintf(buf, "%llu\n", 103 (unsigned long long)(overprovision_segments(sbi))); 104 } 105 106 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, 107 struct f2fs_sb_info *sbi, char *buf) 108 { 109 return sprintf(buf, "%llu\n", 110 (unsigned long long)(sbi->kbytes_written + 111 ((f2fs_get_sectors_written(sbi) - 112 sbi->sectors_written_start) >> 1))); 113 } 114 115 static ssize_t sb_status_show(struct f2fs_attr *a, 116 struct f2fs_sb_info *sbi, char *buf) 117 { 118 return sprintf(buf, "%lx\n", sbi->s_flag); 119 } 120 121 static ssize_t features_show(struct f2fs_attr *a, 122 struct f2fs_sb_info *sbi, char *buf) 123 { 124 int len = 0; 125 126 if (f2fs_sb_has_encrypt(sbi)) 127 len += scnprintf(buf, PAGE_SIZE - len, "%s", 128 "encryption"); 129 if (f2fs_sb_has_blkzoned(sbi)) 130 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 131 len ? ", " : "", "blkzoned"); 132 if (f2fs_sb_has_extra_attr(sbi)) 133 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 134 len ? ", " : "", "extra_attr"); 135 if (f2fs_sb_has_project_quota(sbi)) 136 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 137 len ? ", " : "", "projquota"); 138 if (f2fs_sb_has_inode_chksum(sbi)) 139 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 140 len ? ", " : "", "inode_checksum"); 141 if (f2fs_sb_has_flexible_inline_xattr(sbi)) 142 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 143 len ? ", " : "", "flexible_inline_xattr"); 144 if (f2fs_sb_has_quota_ino(sbi)) 145 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 146 len ? ", " : "", "quota_ino"); 147 if (f2fs_sb_has_inode_crtime(sbi)) 148 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 149 len ? ", " : "", "inode_crtime"); 150 if (f2fs_sb_has_lost_found(sbi)) 151 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 152 len ? ", " : "", "lost_found"); 153 if (f2fs_sb_has_verity(sbi)) 154 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 155 len ? ", " : "", "verity"); 156 if (f2fs_sb_has_sb_chksum(sbi)) 157 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 158 len ? ", " : "", "sb_checksum"); 159 if (f2fs_sb_has_casefold(sbi)) 160 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 161 len ? ", " : "", "casefold"); 162 if (f2fs_sb_has_readonly(sbi)) 163 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 164 len ? ", " : "", "readonly"); 165 if (f2fs_sb_has_compression(sbi)) 166 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 167 len ? ", " : "", "compression"); 168 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 169 len ? ", " : "", "pin_file"); 170 len += scnprintf(buf + len, PAGE_SIZE - len, "\n"); 171 return len; 172 } 173 174 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, 175 struct f2fs_sb_info *sbi, char *buf) 176 { 177 return sprintf(buf, "%u\n", sbi->current_reserved_blocks); 178 } 179 180 static ssize_t unusable_show(struct f2fs_attr *a, 181 struct f2fs_sb_info *sbi, char *buf) 182 { 183 block_t unusable; 184 185 if (test_opt(sbi, DISABLE_CHECKPOINT)) 186 unusable = sbi->unusable_block_count; 187 else 188 unusable = f2fs_get_unusable_blocks(sbi); 189 return sprintf(buf, "%llu\n", (unsigned long long)unusable); 190 } 191 192 static ssize_t encoding_show(struct f2fs_attr *a, 193 struct f2fs_sb_info *sbi, char *buf) 194 { 195 #ifdef CONFIG_UNICODE 196 struct super_block *sb = sbi->sb; 197 198 if (f2fs_sb_has_casefold(sbi)) 199 return sysfs_emit(buf, "%s (%d.%d.%d)\n", 200 sb->s_encoding->charset, 201 (sb->s_encoding->version >> 16) & 0xff, 202 (sb->s_encoding->version >> 8) & 0xff, 203 sb->s_encoding->version & 0xff); 204 #endif 205 return sprintf(buf, "(none)"); 206 } 207 208 static ssize_t mounted_time_sec_show(struct f2fs_attr *a, 209 struct f2fs_sb_info *sbi, char *buf) 210 { 211 return sprintf(buf, "%llu", SIT_I(sbi)->mounted_time); 212 } 213 214 #ifdef CONFIG_F2FS_STAT_FS 215 static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a, 216 struct f2fs_sb_info *sbi, char *buf) 217 { 218 struct f2fs_stat_info *si = F2FS_STAT(sbi); 219 220 return sprintf(buf, "%llu\n", 221 (unsigned long long)(si->tot_blks - 222 (si->bg_data_blks + si->bg_node_blks))); 223 } 224 225 static ssize_t moved_blocks_background_show(struct f2fs_attr *a, 226 struct f2fs_sb_info *sbi, char *buf) 227 { 228 struct f2fs_stat_info *si = F2FS_STAT(sbi); 229 230 return sprintf(buf, "%llu\n", 231 (unsigned long long)(si->bg_data_blks + si->bg_node_blks)); 232 } 233 234 static ssize_t avg_vblocks_show(struct f2fs_attr *a, 235 struct f2fs_sb_info *sbi, char *buf) 236 { 237 struct f2fs_stat_info *si = F2FS_STAT(sbi); 238 239 si->dirty_count = dirty_segments(sbi); 240 f2fs_update_sit_info(sbi); 241 return sprintf(buf, "%llu\n", (unsigned long long)(si->avg_vblocks)); 242 } 243 #endif 244 245 static ssize_t main_blkaddr_show(struct f2fs_attr *a, 246 struct f2fs_sb_info *sbi, char *buf) 247 { 248 return sysfs_emit(buf, "%llu\n", 249 (unsigned long long)MAIN_BLKADDR(sbi)); 250 } 251 252 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 253 struct f2fs_sb_info *sbi, char *buf) 254 { 255 unsigned char *ptr = NULL; 256 unsigned int *ui; 257 258 ptr = __struct_ptr(sbi, a->struct_type); 259 if (!ptr) 260 return -EINVAL; 261 262 if (!strcmp(a->attr.name, "extension_list")) { 263 __u8 (*extlist)[F2FS_EXTENSION_LEN] = 264 sbi->raw_super->extension_list; 265 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 266 int hot_count = sbi->raw_super->hot_ext_count; 267 int len = 0, i; 268 269 len += scnprintf(buf + len, PAGE_SIZE - len, 270 "cold file extension:\n"); 271 for (i = 0; i < cold_count; i++) 272 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", 273 extlist[i]); 274 275 len += scnprintf(buf + len, PAGE_SIZE - len, 276 "hot file extension:\n"); 277 for (i = cold_count; i < cold_count + hot_count; i++) 278 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", 279 extlist[i]); 280 return len; 281 } 282 283 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { 284 struct ckpt_req_control *cprc = &sbi->cprc_info; 285 int len = 0; 286 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio); 287 int data = IOPRIO_PRIO_DATA(cprc->ckpt_thread_ioprio); 288 289 if (class == IOPRIO_CLASS_RT) 290 len += scnprintf(buf + len, PAGE_SIZE - len, "rt,"); 291 else if (class == IOPRIO_CLASS_BE) 292 len += scnprintf(buf + len, PAGE_SIZE - len, "be,"); 293 else 294 return -EINVAL; 295 296 len += scnprintf(buf + len, PAGE_SIZE - len, "%d\n", data); 297 return len; 298 } 299 300 #ifdef CONFIG_F2FS_FS_COMPRESSION 301 if (!strcmp(a->attr.name, "compr_written_block")) 302 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block); 303 304 if (!strcmp(a->attr.name, "compr_saved_block")) 305 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block); 306 307 if (!strcmp(a->attr.name, "compr_new_inode")) 308 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode); 309 #endif 310 311 if (!strcmp(a->attr.name, "gc_segment_mode")) 312 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode); 313 314 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 315 return sysfs_emit(buf, "%u\n", 316 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]); 317 } 318 319 ui = (unsigned int *)(ptr + a->offset); 320 321 return sprintf(buf, "%u\n", *ui); 322 } 323 324 static ssize_t __sbi_store(struct f2fs_attr *a, 325 struct f2fs_sb_info *sbi, 326 const char *buf, size_t count) 327 { 328 unsigned char *ptr; 329 unsigned long t; 330 unsigned int *ui; 331 ssize_t ret; 332 333 ptr = __struct_ptr(sbi, a->struct_type); 334 if (!ptr) 335 return -EINVAL; 336 337 if (!strcmp(a->attr.name, "extension_list")) { 338 const char *name = strim((char *)buf); 339 bool set = true, hot; 340 341 if (!strncmp(name, "[h]", 3)) 342 hot = true; 343 else if (!strncmp(name, "[c]", 3)) 344 hot = false; 345 else 346 return -EINVAL; 347 348 name += 3; 349 350 if (*name == '!') { 351 name++; 352 set = false; 353 } 354 355 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN) 356 return -EINVAL; 357 358 down_write(&sbi->sb_lock); 359 360 ret = f2fs_update_extension_list(sbi, name, hot, set); 361 if (ret) 362 goto out; 363 364 ret = f2fs_commit_super(sbi, false); 365 if (ret) 366 f2fs_update_extension_list(sbi, name, hot, !set); 367 out: 368 up_write(&sbi->sb_lock); 369 return ret ? ret : count; 370 } 371 372 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { 373 const char *name = strim((char *)buf); 374 struct ckpt_req_control *cprc = &sbi->cprc_info; 375 int class; 376 long data; 377 int ret; 378 379 if (!strncmp(name, "rt,", 3)) 380 class = IOPRIO_CLASS_RT; 381 else if (!strncmp(name, "be,", 3)) 382 class = IOPRIO_CLASS_BE; 383 else 384 return -EINVAL; 385 386 name += 3; 387 ret = kstrtol(name, 10, &data); 388 if (ret) 389 return ret; 390 if (data >= IOPRIO_NR_LEVELS || data < 0) 391 return -EINVAL; 392 393 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data); 394 if (test_opt(sbi, MERGE_CHECKPOINT)) { 395 ret = set_task_ioprio(cprc->f2fs_issue_ckpt, 396 cprc->ckpt_thread_ioprio); 397 if (ret) 398 return ret; 399 } 400 401 return count; 402 } 403 404 ui = (unsigned int *)(ptr + a->offset); 405 406 ret = kstrtoul(skip_spaces(buf), 0, &t); 407 if (ret < 0) 408 return ret; 409 #ifdef CONFIG_F2FS_FAULT_INJECTION 410 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) 411 return -EINVAL; 412 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) 413 return -EINVAL; 414 #endif 415 if (a->struct_type == RESERVED_BLOCKS) { 416 spin_lock(&sbi->stat_lock); 417 if (t > (unsigned long)(sbi->user_block_count - 418 F2FS_OPTION(sbi).root_reserved_blocks)) { 419 spin_unlock(&sbi->stat_lock); 420 return -EINVAL; 421 } 422 *ui = t; 423 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 424 sbi->user_block_count - valid_user_blocks(sbi)); 425 spin_unlock(&sbi->stat_lock); 426 return count; 427 } 428 429 if (!strcmp(a->attr.name, "discard_granularity")) { 430 if (t == 0 || t > MAX_PLIST_NUM) 431 return -EINVAL; 432 if (!f2fs_block_unit_discard(sbi)) 433 return -EINVAL; 434 if (t == *ui) 435 return count; 436 *ui = t; 437 return count; 438 } 439 440 if (!strcmp(a->attr.name, "migration_granularity")) { 441 if (t == 0 || t > sbi->segs_per_sec) 442 return -EINVAL; 443 } 444 445 if (!strcmp(a->attr.name, "trim_sections")) 446 return -EINVAL; 447 448 if (!strcmp(a->attr.name, "gc_urgent")) { 449 if (t == 0) { 450 sbi->gc_mode = GC_NORMAL; 451 } else if (t == 1) { 452 sbi->gc_mode = GC_URGENT_HIGH; 453 if (sbi->gc_thread) { 454 sbi->gc_thread->gc_wake = 1; 455 wake_up_interruptible_all( 456 &sbi->gc_thread->gc_wait_queue_head); 457 wake_up_discard_thread(sbi, true); 458 } 459 } else if (t == 2) { 460 sbi->gc_mode = GC_URGENT_LOW; 461 } else { 462 return -EINVAL; 463 } 464 return count; 465 } 466 if (!strcmp(a->attr.name, "gc_idle")) { 467 if (t == GC_IDLE_CB) { 468 sbi->gc_mode = GC_IDLE_CB; 469 } else if (t == GC_IDLE_GREEDY) { 470 sbi->gc_mode = GC_IDLE_GREEDY; 471 } else if (t == GC_IDLE_AT) { 472 if (!sbi->am.atgc_enabled) 473 return -EINVAL; 474 sbi->gc_mode = GC_AT; 475 } else { 476 sbi->gc_mode = GC_NORMAL; 477 } 478 return count; 479 } 480 481 #ifdef CONFIG_F2FS_IOSTAT 482 if (!strcmp(a->attr.name, "iostat_enable")) { 483 sbi->iostat_enable = !!t; 484 if (!sbi->iostat_enable) 485 f2fs_reset_iostat(sbi); 486 return count; 487 } 488 489 if (!strcmp(a->attr.name, "iostat_period_ms")) { 490 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS) 491 return -EINVAL; 492 spin_lock(&sbi->iostat_lock); 493 sbi->iostat_period_ms = (unsigned int)t; 494 spin_unlock(&sbi->iostat_lock); 495 return count; 496 } 497 #endif 498 499 #ifdef CONFIG_F2FS_FS_COMPRESSION 500 if (!strcmp(a->attr.name, "compr_written_block") || 501 !strcmp(a->attr.name, "compr_saved_block")) { 502 if (t != 0) 503 return -EINVAL; 504 sbi->compr_written_block = 0; 505 sbi->compr_saved_block = 0; 506 return count; 507 } 508 509 if (!strcmp(a->attr.name, "compr_new_inode")) { 510 if (t != 0) 511 return -EINVAL; 512 sbi->compr_new_inode = 0; 513 return count; 514 } 515 #endif 516 517 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) { 518 if (t > 100) 519 return -EINVAL; 520 sbi->am.candidate_ratio = t; 521 return count; 522 } 523 524 if (!strcmp(a->attr.name, "atgc_age_weight")) { 525 if (t > 100) 526 return -EINVAL; 527 sbi->am.age_weight = t; 528 return count; 529 } 530 531 if (!strcmp(a->attr.name, "gc_segment_mode")) { 532 if (t < MAX_GC_MODE) 533 sbi->gc_segment_mode = t; 534 else 535 return -EINVAL; 536 return count; 537 } 538 539 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 540 if (t != 0) 541 return -EINVAL; 542 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0; 543 return count; 544 } 545 546 if (!strcmp(a->attr.name, "seq_file_ra_mul")) { 547 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL) 548 sbi->seq_file_ra_mul = t; 549 else 550 return -EINVAL; 551 return count; 552 } 553 554 if (!strcmp(a->attr.name, "max_fragment_chunk")) { 555 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 556 sbi->max_fragment_chunk = t; 557 else 558 return -EINVAL; 559 return count; 560 } 561 562 if (!strcmp(a->attr.name, "max_fragment_hole")) { 563 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 564 sbi->max_fragment_hole = t; 565 else 566 return -EINVAL; 567 return count; 568 } 569 570 *ui = (unsigned int)t; 571 572 return count; 573 } 574 575 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 576 struct f2fs_sb_info *sbi, 577 const char *buf, size_t count) 578 { 579 ssize_t ret; 580 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 581 a->struct_type == GC_THREAD); 582 583 if (gc_entry) { 584 if (!down_read_trylock(&sbi->sb->s_umount)) 585 return -EAGAIN; 586 } 587 ret = __sbi_store(a, sbi, buf, count); 588 if (gc_entry) 589 up_read(&sbi->sb->s_umount); 590 591 return ret; 592 } 593 594 static ssize_t f2fs_attr_show(struct kobject *kobj, 595 struct attribute *attr, char *buf) 596 { 597 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 598 s_kobj); 599 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 600 601 return a->show ? a->show(a, sbi, buf) : 0; 602 } 603 604 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 605 const char *buf, size_t len) 606 { 607 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 608 s_kobj); 609 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 610 611 return a->store ? a->store(a, sbi, buf, len) : 0; 612 } 613 614 static void f2fs_sb_release(struct kobject *kobj) 615 { 616 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 617 s_kobj); 618 complete(&sbi->s_kobj_unregister); 619 } 620 621 /* 622 * Note that there are three feature list entries: 623 * 1) /sys/fs/f2fs/features 624 * : shows runtime features supported by in-kernel f2fs along with Kconfig. 625 * - ref. F2FS_FEATURE_RO_ATTR() 626 * 627 * 2) /sys/fs/f2fs/$s_id/features <deprecated> 628 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This 629 * won't add new feature anymore, and thus, users should check entries in 3) 630 * instead of this 2). 631 * 632 * 3) /sys/fs/f2fs/$s_id/feature_list 633 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows 634 * sysfs entry rule where each entry should expose single value. 635 * This list covers old feature list provided by 2) and beyond. Therefore, 636 * please add new on-disk feature in this list only. 637 * - ref. F2FS_SB_FEATURE_RO_ATTR() 638 */ 639 static ssize_t f2fs_feature_show(struct f2fs_attr *a, 640 struct f2fs_sb_info *sbi, char *buf) 641 { 642 return sprintf(buf, "supported\n"); 643 } 644 645 #define F2FS_FEATURE_RO_ATTR(_name) \ 646 static struct f2fs_attr f2fs_attr_##_name = { \ 647 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 648 .show = f2fs_feature_show, \ 649 } 650 651 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a, 652 struct f2fs_sb_info *sbi, char *buf) 653 { 654 if (F2FS_HAS_FEATURE(sbi, a->id)) 655 return sprintf(buf, "supported\n"); 656 return sprintf(buf, "unsupported\n"); 657 } 658 659 #define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \ 660 static struct f2fs_attr f2fs_attr_sb_##_name = { \ 661 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 662 .show = f2fs_sb_feature_show, \ 663 .id = F2FS_FEATURE_##_feat, \ 664 } 665 666 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 667 static struct f2fs_attr f2fs_attr_##_name = { \ 668 .attr = {.name = __stringify(_name), .mode = _mode }, \ 669 .show = _show, \ 670 .store = _store, \ 671 .struct_type = _struct_type, \ 672 .offset = _offset \ 673 } 674 675 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 676 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 677 f2fs_sbi_show, f2fs_sbi_store, \ 678 offsetof(struct struct_name, elname)) 679 680 #define F2FS_GENERAL_RO_ATTR(name) \ 681 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 682 683 #define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \ 684 static struct f2fs_attr f2fs_attr_##_name = { \ 685 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 686 .show = f2fs_sbi_show, \ 687 .struct_type = _struct_type, \ 688 .offset = offsetof(struct _struct_name, _elname), \ 689 } 690 691 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time, 692 urgent_sleep_time); 693 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); 694 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); 695 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); 696 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode); 697 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode); 698 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); 699 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards); 700 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity); 701 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks); 702 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); 703 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); 704 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); 705 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); 706 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks); 707 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); 708 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); 709 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); 710 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); 711 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); 712 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); 713 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity); 714 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); 715 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); 716 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); 717 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval, 718 interval_time[DISCARD_TIME]); 719 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]); 720 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, 721 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 722 #ifdef CONFIG_F2FS_IOSTAT 723 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable); 724 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_period_ms, iostat_period_ms); 725 #endif 726 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra); 727 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_io_bytes, max_io_bytes); 728 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold); 729 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 730 #ifdef CONFIG_F2FS_FAULT_INJECTION 731 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); 732 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); 733 #endif 734 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, data_io_flag, data_io_flag); 735 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, node_io_flag, node_io_flag); 736 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, ckpt_thread_ioprio, ckpt_thread_ioprio); 737 F2FS_GENERAL_RO_ATTR(dirty_segments); 738 F2FS_GENERAL_RO_ATTR(free_segments); 739 F2FS_GENERAL_RO_ATTR(ovp_segments); 740 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 741 F2FS_GENERAL_RO_ATTR(features); 742 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 743 F2FS_GENERAL_RO_ATTR(unusable); 744 F2FS_GENERAL_RO_ATTR(encoding); 745 F2FS_GENERAL_RO_ATTR(mounted_time_sec); 746 F2FS_GENERAL_RO_ATTR(main_blkaddr); 747 #ifdef CONFIG_F2FS_STAT_FS 748 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count); 749 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count); 750 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count); 751 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc); 752 F2FS_GENERAL_RO_ATTR(moved_blocks_background); 753 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground); 754 F2FS_GENERAL_RO_ATTR(avg_vblocks); 755 #endif 756 757 #ifdef CONFIG_FS_ENCRYPTION 758 F2FS_FEATURE_RO_ATTR(encryption); 759 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2); 760 #ifdef CONFIG_UNICODE 761 F2FS_FEATURE_RO_ATTR(encrypted_casefold); 762 #endif 763 #endif /* CONFIG_FS_ENCRYPTION */ 764 #ifdef CONFIG_BLK_DEV_ZONED 765 F2FS_FEATURE_RO_ATTR(block_zoned); 766 #endif 767 F2FS_FEATURE_RO_ATTR(atomic_write); 768 F2FS_FEATURE_RO_ATTR(extra_attr); 769 F2FS_FEATURE_RO_ATTR(project_quota); 770 F2FS_FEATURE_RO_ATTR(inode_checksum); 771 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr); 772 F2FS_FEATURE_RO_ATTR(quota_ino); 773 F2FS_FEATURE_RO_ATTR(inode_crtime); 774 F2FS_FEATURE_RO_ATTR(lost_found); 775 #ifdef CONFIG_FS_VERITY 776 F2FS_FEATURE_RO_ATTR(verity); 777 #endif 778 F2FS_FEATURE_RO_ATTR(sb_checksum); 779 #ifdef CONFIG_UNICODE 780 F2FS_FEATURE_RO_ATTR(casefold); 781 #endif 782 F2FS_FEATURE_RO_ATTR(readonly); 783 #ifdef CONFIG_F2FS_FS_COMPRESSION 784 F2FS_FEATURE_RO_ATTR(compression); 785 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_written_block, compr_written_block); 786 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_saved_block, compr_saved_block); 787 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_new_inode, compr_new_inode); 788 #endif 789 F2FS_FEATURE_RO_ATTR(pin_file); 790 791 /* For ATGC */ 792 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_ratio, candidate_ratio); 793 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_count, max_candidate_count); 794 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_weight, age_weight); 795 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_threshold, age_threshold); 796 797 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, seq_file_ra_mul, seq_file_ra_mul); 798 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_segment_mode, gc_segment_mode); 799 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_reclaimed_segments, gc_reclaimed_segs); 800 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_fragment_chunk, max_fragment_chunk); 801 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_fragment_hole, max_fragment_hole); 802 803 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 804 static struct attribute *f2fs_attrs[] = { 805 ATTR_LIST(gc_urgent_sleep_time), 806 ATTR_LIST(gc_min_sleep_time), 807 ATTR_LIST(gc_max_sleep_time), 808 ATTR_LIST(gc_no_gc_sleep_time), 809 ATTR_LIST(gc_idle), 810 ATTR_LIST(gc_urgent), 811 ATTR_LIST(reclaim_segments), 812 ATTR_LIST(main_blkaddr), 813 ATTR_LIST(max_small_discards), 814 ATTR_LIST(discard_granularity), 815 ATTR_LIST(batched_trim_sections), 816 ATTR_LIST(ipu_policy), 817 ATTR_LIST(min_ipu_util), 818 ATTR_LIST(min_fsync_blocks), 819 ATTR_LIST(min_seq_blocks), 820 ATTR_LIST(min_hot_blocks), 821 ATTR_LIST(min_ssr_sections), 822 ATTR_LIST(max_victim_search), 823 ATTR_LIST(migration_granularity), 824 ATTR_LIST(dir_level), 825 ATTR_LIST(ram_thresh), 826 ATTR_LIST(ra_nid_pages), 827 ATTR_LIST(dirty_nats_ratio), 828 ATTR_LIST(cp_interval), 829 ATTR_LIST(idle_interval), 830 ATTR_LIST(discard_idle_interval), 831 ATTR_LIST(gc_idle_interval), 832 ATTR_LIST(umount_discard_timeout), 833 #ifdef CONFIG_F2FS_IOSTAT 834 ATTR_LIST(iostat_enable), 835 ATTR_LIST(iostat_period_ms), 836 #endif 837 ATTR_LIST(readdir_ra), 838 ATTR_LIST(max_io_bytes), 839 ATTR_LIST(gc_pin_file_thresh), 840 ATTR_LIST(extension_list), 841 #ifdef CONFIG_F2FS_FAULT_INJECTION 842 ATTR_LIST(inject_rate), 843 ATTR_LIST(inject_type), 844 #endif 845 ATTR_LIST(data_io_flag), 846 ATTR_LIST(node_io_flag), 847 ATTR_LIST(ckpt_thread_ioprio), 848 ATTR_LIST(dirty_segments), 849 ATTR_LIST(free_segments), 850 ATTR_LIST(ovp_segments), 851 ATTR_LIST(unusable), 852 ATTR_LIST(lifetime_write_kbytes), 853 ATTR_LIST(features), 854 ATTR_LIST(reserved_blocks), 855 ATTR_LIST(current_reserved_blocks), 856 ATTR_LIST(encoding), 857 ATTR_LIST(mounted_time_sec), 858 #ifdef CONFIG_F2FS_STAT_FS 859 ATTR_LIST(cp_foreground_calls), 860 ATTR_LIST(cp_background_calls), 861 ATTR_LIST(gc_foreground_calls), 862 ATTR_LIST(gc_background_calls), 863 ATTR_LIST(moved_blocks_foreground), 864 ATTR_LIST(moved_blocks_background), 865 ATTR_LIST(avg_vblocks), 866 #endif 867 #ifdef CONFIG_F2FS_FS_COMPRESSION 868 ATTR_LIST(compr_written_block), 869 ATTR_LIST(compr_saved_block), 870 ATTR_LIST(compr_new_inode), 871 #endif 872 /* For ATGC */ 873 ATTR_LIST(atgc_candidate_ratio), 874 ATTR_LIST(atgc_candidate_count), 875 ATTR_LIST(atgc_age_weight), 876 ATTR_LIST(atgc_age_threshold), 877 ATTR_LIST(seq_file_ra_mul), 878 ATTR_LIST(gc_segment_mode), 879 ATTR_LIST(gc_reclaimed_segments), 880 ATTR_LIST(max_fragment_chunk), 881 ATTR_LIST(max_fragment_hole), 882 NULL, 883 }; 884 ATTRIBUTE_GROUPS(f2fs); 885 886 static struct attribute *f2fs_feat_attrs[] = { 887 #ifdef CONFIG_FS_ENCRYPTION 888 ATTR_LIST(encryption), 889 ATTR_LIST(test_dummy_encryption_v2), 890 #ifdef CONFIG_UNICODE 891 ATTR_LIST(encrypted_casefold), 892 #endif 893 #endif /* CONFIG_FS_ENCRYPTION */ 894 #ifdef CONFIG_BLK_DEV_ZONED 895 ATTR_LIST(block_zoned), 896 #endif 897 ATTR_LIST(atomic_write), 898 ATTR_LIST(extra_attr), 899 ATTR_LIST(project_quota), 900 ATTR_LIST(inode_checksum), 901 ATTR_LIST(flexible_inline_xattr), 902 ATTR_LIST(quota_ino), 903 ATTR_LIST(inode_crtime), 904 ATTR_LIST(lost_found), 905 #ifdef CONFIG_FS_VERITY 906 ATTR_LIST(verity), 907 #endif 908 ATTR_LIST(sb_checksum), 909 #ifdef CONFIG_UNICODE 910 ATTR_LIST(casefold), 911 #endif 912 ATTR_LIST(readonly), 913 #ifdef CONFIG_F2FS_FS_COMPRESSION 914 ATTR_LIST(compression), 915 #endif 916 ATTR_LIST(pin_file), 917 NULL, 918 }; 919 ATTRIBUTE_GROUPS(f2fs_feat); 920 921 F2FS_GENERAL_RO_ATTR(sb_status); 922 static struct attribute *f2fs_stat_attrs[] = { 923 ATTR_LIST(sb_status), 924 NULL, 925 }; 926 ATTRIBUTE_GROUPS(f2fs_stat); 927 928 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT); 929 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED); 930 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR); 931 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA); 932 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM); 933 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR); 934 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO); 935 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME); 936 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND); 937 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY); 938 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM); 939 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD); 940 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION); 941 F2FS_SB_FEATURE_RO_ATTR(readonly, RO); 942 943 static struct attribute *f2fs_sb_feat_attrs[] = { 944 ATTR_LIST(sb_encryption), 945 ATTR_LIST(sb_block_zoned), 946 ATTR_LIST(sb_extra_attr), 947 ATTR_LIST(sb_project_quota), 948 ATTR_LIST(sb_inode_checksum), 949 ATTR_LIST(sb_flexible_inline_xattr), 950 ATTR_LIST(sb_quota_ino), 951 ATTR_LIST(sb_inode_crtime), 952 ATTR_LIST(sb_lost_found), 953 ATTR_LIST(sb_verity), 954 ATTR_LIST(sb_sb_checksum), 955 ATTR_LIST(sb_casefold), 956 ATTR_LIST(sb_compression), 957 ATTR_LIST(sb_readonly), 958 NULL, 959 }; 960 ATTRIBUTE_GROUPS(f2fs_sb_feat); 961 962 static const struct sysfs_ops f2fs_attr_ops = { 963 .show = f2fs_attr_show, 964 .store = f2fs_attr_store, 965 }; 966 967 static struct kobj_type f2fs_sb_ktype = { 968 .default_groups = f2fs_groups, 969 .sysfs_ops = &f2fs_attr_ops, 970 .release = f2fs_sb_release, 971 }; 972 973 static struct kobj_type f2fs_ktype = { 974 .sysfs_ops = &f2fs_attr_ops, 975 }; 976 977 static struct kset f2fs_kset = { 978 .kobj = {.ktype = &f2fs_ktype}, 979 }; 980 981 static struct kobj_type f2fs_feat_ktype = { 982 .default_groups = f2fs_feat_groups, 983 .sysfs_ops = &f2fs_attr_ops, 984 }; 985 986 static struct kobject f2fs_feat = { 987 .kset = &f2fs_kset, 988 }; 989 990 static ssize_t f2fs_stat_attr_show(struct kobject *kobj, 991 struct attribute *attr, char *buf) 992 { 993 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 994 s_stat_kobj); 995 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 996 997 return a->show ? a->show(a, sbi, buf) : 0; 998 } 999 1000 static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr, 1001 const char *buf, size_t len) 1002 { 1003 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1004 s_stat_kobj); 1005 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1006 1007 return a->store ? a->store(a, sbi, buf, len) : 0; 1008 } 1009 1010 static void f2fs_stat_kobj_release(struct kobject *kobj) 1011 { 1012 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1013 s_stat_kobj); 1014 complete(&sbi->s_stat_kobj_unregister); 1015 } 1016 1017 static const struct sysfs_ops f2fs_stat_attr_ops = { 1018 .show = f2fs_stat_attr_show, 1019 .store = f2fs_stat_attr_store, 1020 }; 1021 1022 static struct kobj_type f2fs_stat_ktype = { 1023 .default_groups = f2fs_stat_groups, 1024 .sysfs_ops = &f2fs_stat_attr_ops, 1025 .release = f2fs_stat_kobj_release, 1026 }; 1027 1028 static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj, 1029 struct attribute *attr, char *buf) 1030 { 1031 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1032 s_feature_list_kobj); 1033 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1034 1035 return a->show ? a->show(a, sbi, buf) : 0; 1036 } 1037 1038 static void f2fs_feature_list_kobj_release(struct kobject *kobj) 1039 { 1040 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1041 s_feature_list_kobj); 1042 complete(&sbi->s_feature_list_kobj_unregister); 1043 } 1044 1045 static const struct sysfs_ops f2fs_feature_list_attr_ops = { 1046 .show = f2fs_sb_feat_attr_show, 1047 }; 1048 1049 static struct kobj_type f2fs_feature_list_ktype = { 1050 .default_groups = f2fs_sb_feat_groups, 1051 .sysfs_ops = &f2fs_feature_list_attr_ops, 1052 .release = f2fs_feature_list_kobj_release, 1053 }; 1054 1055 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 1056 void *offset) 1057 { 1058 struct super_block *sb = seq->private; 1059 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1060 unsigned int total_segs = 1061 le32_to_cpu(sbi->raw_super->segment_count_main); 1062 int i; 1063 1064 seq_puts(seq, "format: segment_type|valid_blocks\n" 1065 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1066 1067 for (i = 0; i < total_segs; i++) { 1068 struct seg_entry *se = get_seg_entry(sbi, i); 1069 1070 if ((i % 10) == 0) 1071 seq_printf(seq, "%-10d", i); 1072 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 1073 if ((i % 10) == 9 || i == (total_segs - 1)) 1074 seq_putc(seq, '\n'); 1075 else 1076 seq_putc(seq, ' '); 1077 } 1078 1079 return 0; 1080 } 1081 1082 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 1083 void *offset) 1084 { 1085 struct super_block *sb = seq->private; 1086 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1087 unsigned int total_segs = 1088 le32_to_cpu(sbi->raw_super->segment_count_main); 1089 int i, j; 1090 1091 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 1092 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1093 1094 for (i = 0; i < total_segs; i++) { 1095 struct seg_entry *se = get_seg_entry(sbi, i); 1096 1097 seq_printf(seq, "%-10d", i); 1098 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 1099 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 1100 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 1101 seq_putc(seq, '\n'); 1102 } 1103 return 0; 1104 } 1105 1106 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 1107 void *offset) 1108 { 1109 struct super_block *sb = seq->private; 1110 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1111 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 1112 int i; 1113 1114 seq_puts(seq, "format: victim_secmap bitmaps\n"); 1115 1116 for (i = 0; i < MAIN_SECS(sbi); i++) { 1117 if ((i % 10) == 0) 1118 seq_printf(seq, "%-10d", i); 1119 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 1120 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 1121 seq_putc(seq, '\n'); 1122 else 1123 seq_putc(seq, ' '); 1124 } 1125 return 0; 1126 } 1127 1128 int __init f2fs_init_sysfs(void) 1129 { 1130 int ret; 1131 1132 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 1133 f2fs_kset.kobj.parent = fs_kobj; 1134 ret = kset_register(&f2fs_kset); 1135 if (ret) 1136 return ret; 1137 1138 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 1139 NULL, "features"); 1140 if (ret) { 1141 kobject_put(&f2fs_feat); 1142 kset_unregister(&f2fs_kset); 1143 } else { 1144 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 1145 } 1146 return ret; 1147 } 1148 1149 void f2fs_exit_sysfs(void) 1150 { 1151 kobject_put(&f2fs_feat); 1152 kset_unregister(&f2fs_kset); 1153 remove_proc_entry("fs/f2fs", NULL); 1154 f2fs_proc_root = NULL; 1155 } 1156 1157 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 1158 { 1159 struct super_block *sb = sbi->sb; 1160 int err; 1161 1162 sbi->s_kobj.kset = &f2fs_kset; 1163 init_completion(&sbi->s_kobj_unregister); 1164 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 1165 "%s", sb->s_id); 1166 if (err) 1167 goto put_sb_kobj; 1168 1169 sbi->s_stat_kobj.kset = &f2fs_kset; 1170 init_completion(&sbi->s_stat_kobj_unregister); 1171 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype, 1172 &sbi->s_kobj, "stat"); 1173 if (err) 1174 goto put_stat_kobj; 1175 1176 sbi->s_feature_list_kobj.kset = &f2fs_kset; 1177 init_completion(&sbi->s_feature_list_kobj_unregister); 1178 err = kobject_init_and_add(&sbi->s_feature_list_kobj, 1179 &f2fs_feature_list_ktype, 1180 &sbi->s_kobj, "feature_list"); 1181 if (err) 1182 goto put_feature_list_kobj; 1183 1184 if (f2fs_proc_root) 1185 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 1186 1187 if (sbi->s_proc) { 1188 proc_create_single_data("segment_info", 0444, sbi->s_proc, 1189 segment_info_seq_show, sb); 1190 proc_create_single_data("segment_bits", 0444, sbi->s_proc, 1191 segment_bits_seq_show, sb); 1192 #ifdef CONFIG_F2FS_IOSTAT 1193 proc_create_single_data("iostat_info", 0444, sbi->s_proc, 1194 iostat_info_seq_show, sb); 1195 #endif 1196 proc_create_single_data("victim_bits", 0444, sbi->s_proc, 1197 victim_bits_seq_show, sb); 1198 } 1199 return 0; 1200 put_feature_list_kobj: 1201 kobject_put(&sbi->s_feature_list_kobj); 1202 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1203 put_stat_kobj: 1204 kobject_put(&sbi->s_stat_kobj); 1205 wait_for_completion(&sbi->s_stat_kobj_unregister); 1206 put_sb_kobj: 1207 kobject_put(&sbi->s_kobj); 1208 wait_for_completion(&sbi->s_kobj_unregister); 1209 return err; 1210 } 1211 1212 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 1213 { 1214 if (sbi->s_proc) { 1215 #ifdef CONFIG_F2FS_IOSTAT 1216 remove_proc_entry("iostat_info", sbi->s_proc); 1217 #endif 1218 remove_proc_entry("segment_info", sbi->s_proc); 1219 remove_proc_entry("segment_bits", sbi->s_proc); 1220 remove_proc_entry("victim_bits", sbi->s_proc); 1221 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); 1222 } 1223 1224 kobject_del(&sbi->s_stat_kobj); 1225 kobject_put(&sbi->s_stat_kobj); 1226 wait_for_completion(&sbi->s_stat_kobj_unregister); 1227 kobject_del(&sbi->s_feature_list_kobj); 1228 kobject_put(&sbi->s_feature_list_kobj); 1229 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1230 1231 kobject_del(&sbi->s_kobj); 1232 kobject_put(&sbi->s_kobj); 1233 wait_for_completion(&sbi->s_kobj_unregister); 1234 } 1235