1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * f2fs sysfs interface 4 * 5 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 6 * http://www.samsung.com/ 7 * Copyright (c) 2017 Chao Yu <chao@kernel.org> 8 */ 9 #include <linux/compiler.h> 10 #include <linux/proc_fs.h> 11 #include <linux/f2fs_fs.h> 12 #include <linux/seq_file.h> 13 #include <linux/unicode.h> 14 #include <linux/ioprio.h> 15 #include <linux/sysfs.h> 16 17 #include "f2fs.h" 18 #include "segment.h" 19 #include "gc.h" 20 #include "iostat.h" 21 #include <trace/events/f2fs.h> 22 23 static struct proc_dir_entry *f2fs_proc_root; 24 25 /* Sysfs support for f2fs */ 26 enum { 27 GC_THREAD, /* struct f2fs_gc_thread */ 28 SM_INFO, /* struct f2fs_sm_info */ 29 DCC_INFO, /* struct discard_cmd_control */ 30 NM_INFO, /* struct f2fs_nm_info */ 31 F2FS_SBI, /* struct f2fs_sb_info */ 32 #ifdef CONFIG_F2FS_STAT_FS 33 STAT_INFO, /* struct f2fs_stat_info */ 34 #endif 35 #ifdef CONFIG_F2FS_FAULT_INJECTION 36 FAULT_INFO_RATE, /* struct f2fs_fault_info */ 37 FAULT_INFO_TYPE, /* struct f2fs_fault_info */ 38 #endif 39 RESERVED_BLOCKS, /* struct f2fs_sb_info */ 40 CPRC_INFO, /* struct ckpt_req_control */ 41 ATGC_INFO, /* struct atgc_management */ 42 }; 43 44 static const char *gc_mode_names[MAX_GC_MODE] = { 45 "GC_NORMAL", 46 "GC_IDLE_CB", 47 "GC_IDLE_GREEDY", 48 "GC_IDLE_AT", 49 "GC_URGENT_HIGH", 50 "GC_URGENT_LOW", 51 "GC_URGENT_MID" 52 }; 53 54 struct f2fs_attr { 55 struct attribute attr; 56 ssize_t (*show)(struct f2fs_attr *a, struct f2fs_sb_info *sbi, char *buf); 57 ssize_t (*store)(struct f2fs_attr *a, struct f2fs_sb_info *sbi, 58 const char *buf, size_t len); 59 int struct_type; 60 int offset; 61 int id; 62 }; 63 64 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 gc_mode_show(struct f2fs_attr *a, 147 struct f2fs_sb_info *sbi, char *buf) 148 { 149 return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]); 150 } 151 152 static ssize_t features_show(struct f2fs_attr *a, 153 struct f2fs_sb_info *sbi, char *buf) 154 { 155 int len = 0; 156 157 if (f2fs_sb_has_encrypt(sbi)) 158 len += scnprintf(buf, PAGE_SIZE - len, "%s", 159 "encryption"); 160 if (f2fs_sb_has_blkzoned(sbi)) 161 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 162 len ? ", " : "", "blkzoned"); 163 if (f2fs_sb_has_extra_attr(sbi)) 164 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 165 len ? ", " : "", "extra_attr"); 166 if (f2fs_sb_has_project_quota(sbi)) 167 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 168 len ? ", " : "", "projquota"); 169 if (f2fs_sb_has_inode_chksum(sbi)) 170 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 171 len ? ", " : "", "inode_checksum"); 172 if (f2fs_sb_has_flexible_inline_xattr(sbi)) 173 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 174 len ? ", " : "", "flexible_inline_xattr"); 175 if (f2fs_sb_has_quota_ino(sbi)) 176 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 177 len ? ", " : "", "quota_ino"); 178 if (f2fs_sb_has_inode_crtime(sbi)) 179 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 180 len ? ", " : "", "inode_crtime"); 181 if (f2fs_sb_has_lost_found(sbi)) 182 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 183 len ? ", " : "", "lost_found"); 184 if (f2fs_sb_has_verity(sbi)) 185 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 186 len ? ", " : "", "verity"); 187 if (f2fs_sb_has_sb_chksum(sbi)) 188 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 189 len ? ", " : "", "sb_checksum"); 190 if (f2fs_sb_has_casefold(sbi)) 191 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 192 len ? ", " : "", "casefold"); 193 if (f2fs_sb_has_readonly(sbi)) 194 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 195 len ? ", " : "", "readonly"); 196 if (f2fs_sb_has_compression(sbi)) 197 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 198 len ? ", " : "", "compression"); 199 len += scnprintf(buf + len, PAGE_SIZE - len, "%s%s", 200 len ? ", " : "", "pin_file"); 201 len += scnprintf(buf + len, PAGE_SIZE - len, "\n"); 202 return len; 203 } 204 205 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, 206 struct f2fs_sb_info *sbi, char *buf) 207 { 208 return sysfs_emit(buf, "%u\n", sbi->current_reserved_blocks); 209 } 210 211 static ssize_t unusable_show(struct f2fs_attr *a, 212 struct f2fs_sb_info *sbi, char *buf) 213 { 214 block_t unusable; 215 216 if (test_opt(sbi, DISABLE_CHECKPOINT)) 217 unusable = sbi->unusable_block_count; 218 else 219 unusable = f2fs_get_unusable_blocks(sbi); 220 return sysfs_emit(buf, "%llu\n", (unsigned long long)unusable); 221 } 222 223 static ssize_t encoding_show(struct f2fs_attr *a, 224 struct f2fs_sb_info *sbi, char *buf) 225 { 226 #if IS_ENABLED(CONFIG_UNICODE) 227 struct super_block *sb = sbi->sb; 228 229 if (f2fs_sb_has_casefold(sbi)) 230 return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n", 231 (sb->s_encoding->version >> 16) & 0xff, 232 (sb->s_encoding->version >> 8) & 0xff, 233 sb->s_encoding->version & 0xff); 234 #endif 235 return sysfs_emit(buf, "(none)\n"); 236 } 237 238 static ssize_t mounted_time_sec_show(struct f2fs_attr *a, 239 struct f2fs_sb_info *sbi, char *buf) 240 { 241 return sysfs_emit(buf, "%llu\n", SIT_I(sbi)->mounted_time); 242 } 243 244 #ifdef CONFIG_F2FS_STAT_FS 245 static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a, 246 struct f2fs_sb_info *sbi, char *buf) 247 { 248 struct f2fs_stat_info *si = F2FS_STAT(sbi); 249 250 return sysfs_emit(buf, "%llu\n", 251 (unsigned long long)(si->tot_blks - 252 (si->bg_data_blks + si->bg_node_blks))); 253 } 254 255 static ssize_t moved_blocks_background_show(struct f2fs_attr *a, 256 struct f2fs_sb_info *sbi, char *buf) 257 { 258 struct f2fs_stat_info *si = F2FS_STAT(sbi); 259 260 return sysfs_emit(buf, "%llu\n", 261 (unsigned long long)(si->bg_data_blks + si->bg_node_blks)); 262 } 263 264 static ssize_t avg_vblocks_show(struct f2fs_attr *a, 265 struct f2fs_sb_info *sbi, char *buf) 266 { 267 struct f2fs_stat_info *si = F2FS_STAT(sbi); 268 269 si->dirty_count = dirty_segments(sbi); 270 f2fs_update_sit_info(sbi); 271 return sysfs_emit(buf, "%llu\n", (unsigned long long)(si->avg_vblocks)); 272 } 273 #endif 274 275 static ssize_t main_blkaddr_show(struct f2fs_attr *a, 276 struct f2fs_sb_info *sbi, char *buf) 277 { 278 return sysfs_emit(buf, "%llu\n", 279 (unsigned long long)MAIN_BLKADDR(sbi)); 280 } 281 282 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 283 struct f2fs_sb_info *sbi, char *buf) 284 { 285 unsigned char *ptr = NULL; 286 unsigned int *ui; 287 288 ptr = __struct_ptr(sbi, a->struct_type); 289 if (!ptr) 290 return -EINVAL; 291 292 if (!strcmp(a->attr.name, "extension_list")) { 293 __u8 (*extlist)[F2FS_EXTENSION_LEN] = 294 sbi->raw_super->extension_list; 295 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 296 int hot_count = sbi->raw_super->hot_ext_count; 297 int len = 0, i; 298 299 len += scnprintf(buf + len, PAGE_SIZE - len, 300 "cold file extension:\n"); 301 for (i = 0; i < cold_count; i++) 302 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", 303 extlist[i]); 304 305 len += scnprintf(buf + len, PAGE_SIZE - len, 306 "hot file extension:\n"); 307 for (i = cold_count; i < cold_count + hot_count; i++) 308 len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", 309 extlist[i]); 310 return len; 311 } 312 313 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { 314 struct ckpt_req_control *cprc = &sbi->cprc_info; 315 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio); 316 int data = IOPRIO_PRIO_DATA(cprc->ckpt_thread_ioprio); 317 318 if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE) 319 return -EINVAL; 320 321 return sysfs_emit(buf, "%s,%d\n", 322 class == IOPRIO_CLASS_RT ? "rt" : "be", data); 323 } 324 325 #ifdef CONFIG_F2FS_FS_COMPRESSION 326 if (!strcmp(a->attr.name, "compr_written_block")) 327 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block); 328 329 if (!strcmp(a->attr.name, "compr_saved_block")) 330 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block); 331 332 if (!strcmp(a->attr.name, "compr_new_inode")) 333 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode); 334 #endif 335 336 if (!strcmp(a->attr.name, "gc_segment_mode")) 337 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode); 338 339 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 340 return sysfs_emit(buf, "%u\n", 341 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]); 342 } 343 344 if (!strcmp(a->attr.name, "current_atomic_write")) { 345 s64 current_write = atomic64_read(&sbi->current_atomic_write); 346 347 return sysfs_emit(buf, "%lld\n", current_write); 348 } 349 350 if (!strcmp(a->attr.name, "peak_atomic_write")) 351 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write); 352 353 if (!strcmp(a->attr.name, "committed_atomic_block")) 354 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block); 355 356 if (!strcmp(a->attr.name, "revoked_atomic_block")) 357 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block); 358 359 #ifdef CONFIG_F2FS_STAT_FS 360 if (!strcmp(a->attr.name, "cp_foreground_calls")) 361 return sysfs_emit(buf, "%d\n", 362 atomic_read(&sbi->cp_call_count[TOTAL_CALL]) - 363 atomic_read(&sbi->cp_call_count[BACKGROUND])); 364 if (!strcmp(a->attr.name, "cp_background_calls")) 365 return sysfs_emit(buf, "%d\n", 366 atomic_read(&sbi->cp_call_count[BACKGROUND])); 367 #endif 368 369 ui = (unsigned int *)(ptr + a->offset); 370 371 return sysfs_emit(buf, "%u\n", *ui); 372 } 373 374 static ssize_t __sbi_store(struct f2fs_attr *a, 375 struct f2fs_sb_info *sbi, 376 const char *buf, size_t count) 377 { 378 unsigned char *ptr; 379 unsigned long t; 380 unsigned int *ui; 381 ssize_t ret; 382 383 ptr = __struct_ptr(sbi, a->struct_type); 384 if (!ptr) 385 return -EINVAL; 386 387 if (!strcmp(a->attr.name, "extension_list")) { 388 const char *name = strim((char *)buf); 389 bool set = true, hot; 390 391 if (!strncmp(name, "[h]", 3)) 392 hot = true; 393 else if (!strncmp(name, "[c]", 3)) 394 hot = false; 395 else 396 return -EINVAL; 397 398 name += 3; 399 400 if (*name == '!') { 401 name++; 402 set = false; 403 } 404 405 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN) 406 return -EINVAL; 407 408 f2fs_down_write(&sbi->sb_lock); 409 410 ret = f2fs_update_extension_list(sbi, name, hot, set); 411 if (ret) 412 goto out; 413 414 ret = f2fs_commit_super(sbi, false); 415 if (ret) 416 f2fs_update_extension_list(sbi, name, hot, !set); 417 out: 418 f2fs_up_write(&sbi->sb_lock); 419 return ret ? ret : count; 420 } 421 422 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { 423 const char *name = strim((char *)buf); 424 struct ckpt_req_control *cprc = &sbi->cprc_info; 425 int class; 426 long data; 427 int ret; 428 429 if (!strncmp(name, "rt,", 3)) 430 class = IOPRIO_CLASS_RT; 431 else if (!strncmp(name, "be,", 3)) 432 class = IOPRIO_CLASS_BE; 433 else 434 return -EINVAL; 435 436 name += 3; 437 ret = kstrtol(name, 10, &data); 438 if (ret) 439 return ret; 440 if (data >= IOPRIO_NR_LEVELS || data < 0) 441 return -EINVAL; 442 443 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data); 444 if (test_opt(sbi, MERGE_CHECKPOINT)) { 445 ret = set_task_ioprio(cprc->f2fs_issue_ckpt, 446 cprc->ckpt_thread_ioprio); 447 if (ret) 448 return ret; 449 } 450 451 return count; 452 } 453 454 ui = (unsigned int *)(ptr + a->offset); 455 456 ret = kstrtoul(skip_spaces(buf), 0, &t); 457 if (ret < 0) 458 return ret; 459 #ifdef CONFIG_F2FS_FAULT_INJECTION 460 if (a->struct_type == FAULT_INFO_TYPE && t >= BIT(FAULT_MAX)) 461 return -EINVAL; 462 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) 463 return -EINVAL; 464 #endif 465 if (a->struct_type == RESERVED_BLOCKS) { 466 spin_lock(&sbi->stat_lock); 467 if (t > (unsigned long)(sbi->user_block_count - 468 F2FS_OPTION(sbi).root_reserved_blocks - 469 (SM_I(sbi)->additional_reserved_segments << 470 sbi->log_blocks_per_seg))) { 471 spin_unlock(&sbi->stat_lock); 472 return -EINVAL; 473 } 474 *ui = t; 475 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 476 sbi->user_block_count - valid_user_blocks(sbi)); 477 spin_unlock(&sbi->stat_lock); 478 return count; 479 } 480 481 if (!strcmp(a->attr.name, "discard_io_aware_gran")) { 482 if (t > MAX_PLIST_NUM) 483 return -EINVAL; 484 if (!f2fs_block_unit_discard(sbi)) 485 return -EINVAL; 486 if (t == *ui) 487 return count; 488 *ui = t; 489 return count; 490 } 491 492 if (!strcmp(a->attr.name, "discard_granularity")) { 493 if (t == 0 || t > MAX_PLIST_NUM) 494 return -EINVAL; 495 if (!f2fs_block_unit_discard(sbi)) 496 return -EINVAL; 497 if (t == *ui) 498 return count; 499 *ui = t; 500 return count; 501 } 502 503 if (!strcmp(a->attr.name, "max_ordered_discard")) { 504 if (t == 0 || t > MAX_PLIST_NUM) 505 return -EINVAL; 506 if (!f2fs_block_unit_discard(sbi)) 507 return -EINVAL; 508 *ui = t; 509 return count; 510 } 511 512 if (!strcmp(a->attr.name, "discard_urgent_util")) { 513 if (t > 100) 514 return -EINVAL; 515 *ui = t; 516 return count; 517 } 518 519 if (!strcmp(a->attr.name, "migration_granularity")) { 520 if (t == 0 || t > SEGS_PER_SEC(sbi)) 521 return -EINVAL; 522 } 523 524 if (!strcmp(a->attr.name, "gc_urgent")) { 525 if (t == 0) { 526 sbi->gc_mode = GC_NORMAL; 527 } else if (t == 1) { 528 sbi->gc_mode = GC_URGENT_HIGH; 529 if (sbi->gc_thread) { 530 sbi->gc_thread->gc_wake = true; 531 wake_up_interruptible_all( 532 &sbi->gc_thread->gc_wait_queue_head); 533 wake_up_discard_thread(sbi, true); 534 } 535 } else if (t == 2) { 536 sbi->gc_mode = GC_URGENT_LOW; 537 } else if (t == 3) { 538 sbi->gc_mode = GC_URGENT_MID; 539 if (sbi->gc_thread) { 540 sbi->gc_thread->gc_wake = true; 541 wake_up_interruptible_all( 542 &sbi->gc_thread->gc_wait_queue_head); 543 } 544 } else { 545 return -EINVAL; 546 } 547 return count; 548 } 549 if (!strcmp(a->attr.name, "gc_idle")) { 550 if (t == GC_IDLE_CB) { 551 sbi->gc_mode = GC_IDLE_CB; 552 } else if (t == GC_IDLE_GREEDY) { 553 sbi->gc_mode = GC_IDLE_GREEDY; 554 } else if (t == GC_IDLE_AT) { 555 if (!sbi->am.atgc_enabled) 556 return -EINVAL; 557 sbi->gc_mode = GC_IDLE_AT; 558 } else { 559 sbi->gc_mode = GC_NORMAL; 560 } 561 return count; 562 } 563 564 if (!strcmp(a->attr.name, "gc_remaining_trials")) { 565 spin_lock(&sbi->gc_remaining_trials_lock); 566 sbi->gc_remaining_trials = t; 567 spin_unlock(&sbi->gc_remaining_trials_lock); 568 569 return count; 570 } 571 572 #ifdef CONFIG_F2FS_IOSTAT 573 if (!strcmp(a->attr.name, "iostat_enable")) { 574 sbi->iostat_enable = !!t; 575 if (!sbi->iostat_enable) 576 f2fs_reset_iostat(sbi); 577 return count; 578 } 579 580 if (!strcmp(a->attr.name, "iostat_period_ms")) { 581 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS) 582 return -EINVAL; 583 spin_lock_irq(&sbi->iostat_lock); 584 sbi->iostat_period_ms = (unsigned int)t; 585 spin_unlock_irq(&sbi->iostat_lock); 586 return count; 587 } 588 #endif 589 590 #ifdef CONFIG_F2FS_FS_COMPRESSION 591 if (!strcmp(a->attr.name, "compr_written_block") || 592 !strcmp(a->attr.name, "compr_saved_block")) { 593 if (t != 0) 594 return -EINVAL; 595 sbi->compr_written_block = 0; 596 sbi->compr_saved_block = 0; 597 return count; 598 } 599 600 if (!strcmp(a->attr.name, "compr_new_inode")) { 601 if (t != 0) 602 return -EINVAL; 603 sbi->compr_new_inode = 0; 604 return count; 605 } 606 607 if (!strcmp(a->attr.name, "compress_percent")) { 608 if (t == 0 || t > 100) 609 return -EINVAL; 610 *ui = t; 611 return count; 612 } 613 614 if (!strcmp(a->attr.name, "compress_watermark")) { 615 if (t == 0 || t > 100) 616 return -EINVAL; 617 *ui = t; 618 return count; 619 } 620 #endif 621 622 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) { 623 if (t > 100) 624 return -EINVAL; 625 sbi->am.candidate_ratio = t; 626 return count; 627 } 628 629 if (!strcmp(a->attr.name, "atgc_age_weight")) { 630 if (t > 100) 631 return -EINVAL; 632 sbi->am.age_weight = t; 633 return count; 634 } 635 636 if (!strcmp(a->attr.name, "gc_segment_mode")) { 637 if (t < MAX_GC_MODE) 638 sbi->gc_segment_mode = t; 639 else 640 return -EINVAL; 641 return count; 642 } 643 644 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 645 if (t != 0) 646 return -EINVAL; 647 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0; 648 return count; 649 } 650 651 if (!strcmp(a->attr.name, "seq_file_ra_mul")) { 652 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL) 653 sbi->seq_file_ra_mul = t; 654 else 655 return -EINVAL; 656 return count; 657 } 658 659 if (!strcmp(a->attr.name, "max_fragment_chunk")) { 660 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 661 sbi->max_fragment_chunk = t; 662 else 663 return -EINVAL; 664 return count; 665 } 666 667 if (!strcmp(a->attr.name, "max_fragment_hole")) { 668 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 669 sbi->max_fragment_hole = t; 670 else 671 return -EINVAL; 672 return count; 673 } 674 675 if (!strcmp(a->attr.name, "peak_atomic_write")) { 676 if (t != 0) 677 return -EINVAL; 678 sbi->peak_atomic_write = 0; 679 return count; 680 } 681 682 if (!strcmp(a->attr.name, "committed_atomic_block")) { 683 if (t != 0) 684 return -EINVAL; 685 sbi->committed_atomic_block = 0; 686 return count; 687 } 688 689 if (!strcmp(a->attr.name, "revoked_atomic_block")) { 690 if (t != 0) 691 return -EINVAL; 692 sbi->revoked_atomic_block = 0; 693 return count; 694 } 695 696 if (!strcmp(a->attr.name, "readdir_ra")) { 697 sbi->readdir_ra = !!t; 698 return count; 699 } 700 701 if (!strcmp(a->attr.name, "hot_data_age_threshold")) { 702 if (t == 0 || t >= sbi->warm_data_age_threshold) 703 return -EINVAL; 704 if (t == *ui) 705 return count; 706 *ui = (unsigned int)t; 707 return count; 708 } 709 710 if (!strcmp(a->attr.name, "warm_data_age_threshold")) { 711 if (t <= sbi->hot_data_age_threshold) 712 return -EINVAL; 713 if (t == *ui) 714 return count; 715 *ui = (unsigned int)t; 716 return count; 717 } 718 719 if (!strcmp(a->attr.name, "last_age_weight")) { 720 if (t > 100) 721 return -EINVAL; 722 if (t == *ui) 723 return count; 724 *ui = (unsigned int)t; 725 return count; 726 } 727 728 if (!strcmp(a->attr.name, "ipu_policy")) { 729 if (t >= BIT(F2FS_IPU_MAX)) 730 return -EINVAL; 731 if (t && f2fs_lfs_mode(sbi)) 732 return -EINVAL; 733 SM_I(sbi)->ipu_policy = (unsigned int)t; 734 return count; 735 } 736 737 *ui = (unsigned int)t; 738 739 return count; 740 } 741 742 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 743 struct f2fs_sb_info *sbi, 744 const char *buf, size_t count) 745 { 746 ssize_t ret; 747 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 748 a->struct_type == GC_THREAD); 749 750 if (gc_entry) { 751 if (!down_read_trylock(&sbi->sb->s_umount)) 752 return -EAGAIN; 753 } 754 ret = __sbi_store(a, sbi, buf, count); 755 if (gc_entry) 756 up_read(&sbi->sb->s_umount); 757 758 return ret; 759 } 760 761 static ssize_t f2fs_attr_show(struct kobject *kobj, 762 struct attribute *attr, char *buf) 763 { 764 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 765 s_kobj); 766 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 767 768 return a->show ? a->show(a, sbi, buf) : 0; 769 } 770 771 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 772 const char *buf, size_t len) 773 { 774 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 775 s_kobj); 776 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 777 778 return a->store ? a->store(a, sbi, buf, len) : 0; 779 } 780 781 static void f2fs_sb_release(struct kobject *kobj) 782 { 783 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 784 s_kobj); 785 complete(&sbi->s_kobj_unregister); 786 } 787 788 /* 789 * Note that there are three feature list entries: 790 * 1) /sys/fs/f2fs/features 791 * : shows runtime features supported by in-kernel f2fs along with Kconfig. 792 * - ref. F2FS_FEATURE_RO_ATTR() 793 * 794 * 2) /sys/fs/f2fs/$s_id/features <deprecated> 795 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This 796 * won't add new feature anymore, and thus, users should check entries in 3) 797 * instead of this 2). 798 * 799 * 3) /sys/fs/f2fs/$s_id/feature_list 800 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows 801 * sysfs entry rule where each entry should expose single value. 802 * This list covers old feature list provided by 2) and beyond. Therefore, 803 * please add new on-disk feature in this list only. 804 * - ref. F2FS_SB_FEATURE_RO_ATTR() 805 */ 806 static ssize_t f2fs_feature_show(struct f2fs_attr *a, 807 struct f2fs_sb_info *sbi, char *buf) 808 { 809 return sysfs_emit(buf, "supported\n"); 810 } 811 812 #define F2FS_FEATURE_RO_ATTR(_name) \ 813 static struct f2fs_attr f2fs_attr_##_name = { \ 814 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 815 .show = f2fs_feature_show, \ 816 } 817 818 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a, 819 struct f2fs_sb_info *sbi, char *buf) 820 { 821 if (F2FS_HAS_FEATURE(sbi, a->id)) 822 return sysfs_emit(buf, "supported\n"); 823 return sysfs_emit(buf, "unsupported\n"); 824 } 825 826 #define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \ 827 static struct f2fs_attr f2fs_attr_sb_##_name = { \ 828 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 829 .show = f2fs_sb_feature_show, \ 830 .id = F2FS_FEATURE_##_feat, \ 831 } 832 833 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 834 static struct f2fs_attr f2fs_attr_##_name = { \ 835 .attr = {.name = __stringify(_name), .mode = _mode }, \ 836 .show = _show, \ 837 .store = _store, \ 838 .struct_type = _struct_type, \ 839 .offset = _offset \ 840 } 841 842 #define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \ 843 F2FS_ATTR_OFFSET(struct_type, name, 0444, \ 844 f2fs_sbi_show, NULL, \ 845 offsetof(struct struct_name, elname)) 846 847 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 848 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 849 f2fs_sbi_show, f2fs_sbi_store, \ 850 offsetof(struct struct_name, elname)) 851 852 #define F2FS_GENERAL_RO_ATTR(name) \ 853 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 854 855 #ifdef CONFIG_F2FS_STAT_FS 856 #define STAT_INFO_RO_ATTR(name, elname) \ 857 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname) 858 #endif 859 860 #define GC_THREAD_RW_ATTR(name, elname) \ 861 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname) 862 863 #define SM_INFO_RW_ATTR(name, elname) \ 864 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname) 865 866 #define SM_INFO_GENERAL_RW_ATTR(elname) \ 867 SM_INFO_RW_ATTR(elname, elname) 868 869 #define DCC_INFO_RW_ATTR(name, elname) \ 870 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname) 871 872 #define DCC_INFO_GENERAL_RW_ATTR(elname) \ 873 DCC_INFO_RW_ATTR(elname, elname) 874 875 #define NM_INFO_RW_ATTR(name, elname) \ 876 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname) 877 878 #define NM_INFO_GENERAL_RW_ATTR(elname) \ 879 NM_INFO_RW_ATTR(elname, elname) 880 881 #define F2FS_SBI_RW_ATTR(name, elname) \ 882 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname) 883 884 #define F2FS_SBI_GENERAL_RW_ATTR(elname) \ 885 F2FS_SBI_RW_ATTR(elname, elname) 886 887 #define F2FS_SBI_GENERAL_RO_ATTR(elname) \ 888 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname) 889 890 #ifdef CONFIG_F2FS_FAULT_INJECTION 891 #define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \ 892 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname) 893 #endif 894 895 #define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \ 896 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname) 897 898 #define CPRC_INFO_GENERAL_RW_ATTR(elname) \ 899 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname) 900 901 #define ATGC_INFO_RW_ATTR(name, elname) \ 902 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname) 903 904 /* GC_THREAD ATTR */ 905 GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time); 906 GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time); 907 GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time); 908 GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time); 909 910 /* SM_INFO ATTR */ 911 SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments); 912 SM_INFO_GENERAL_RW_ATTR(ipu_policy); 913 SM_INFO_GENERAL_RW_ATTR(min_ipu_util); 914 SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks); 915 SM_INFO_GENERAL_RW_ATTR(min_seq_blocks); 916 SM_INFO_GENERAL_RW_ATTR(min_hot_blocks); 917 SM_INFO_GENERAL_RW_ATTR(min_ssr_sections); 918 919 /* DCC_INFO ATTR */ 920 DCC_INFO_RW_ATTR(max_small_discards, max_discards); 921 DCC_INFO_GENERAL_RW_ATTR(max_discard_request); 922 DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time); 923 DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time); 924 DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time); 925 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran); 926 DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util); 927 DCC_INFO_GENERAL_RW_ATTR(discard_granularity); 928 DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard); 929 930 /* NM_INFO ATTR */ 931 NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks); 932 NM_INFO_GENERAL_RW_ATTR(ram_thresh); 933 NM_INFO_GENERAL_RW_ATTR(ra_nid_pages); 934 NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio); 935 936 /* F2FS_SBI ATTR */ 937 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 938 F2FS_SBI_RW_ATTR(gc_idle, gc_mode); 939 F2FS_SBI_RW_ATTR(gc_urgent, gc_mode); 940 F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]); 941 F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]); 942 F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]); 943 F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]); 944 F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 945 F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold); 946 F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs); 947 F2FS_SBI_GENERAL_RW_ATTR(max_victim_search); 948 F2FS_SBI_GENERAL_RW_ATTR(migration_granularity); 949 F2FS_SBI_GENERAL_RW_ATTR(dir_level); 950 #ifdef CONFIG_F2FS_IOSTAT 951 F2FS_SBI_GENERAL_RW_ATTR(iostat_enable); 952 F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms); 953 #endif 954 F2FS_SBI_GENERAL_RW_ATTR(readdir_ra); 955 F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes); 956 F2FS_SBI_GENERAL_RW_ATTR(data_io_flag); 957 F2FS_SBI_GENERAL_RW_ATTR(node_io_flag); 958 F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials); 959 F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul); 960 F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode); 961 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk); 962 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole); 963 #ifdef CONFIG_F2FS_FS_COMPRESSION 964 F2FS_SBI_GENERAL_RW_ATTR(compr_written_block); 965 F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block); 966 F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode); 967 F2FS_SBI_GENERAL_RW_ATTR(compress_percent); 968 F2FS_SBI_GENERAL_RW_ATTR(compress_watermark); 969 #endif 970 /* atomic write */ 971 F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write); 972 F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write); 973 F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block); 974 F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block); 975 /* block age extent cache */ 976 F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold); 977 F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold); 978 F2FS_SBI_GENERAL_RW_ATTR(last_age_weight); 979 #ifdef CONFIG_BLK_DEV_ZONED 980 F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec); 981 #endif 982 983 /* STAT_INFO ATTR */ 984 #ifdef CONFIG_F2FS_STAT_FS 985 STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]); 986 STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]); 987 STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]); 988 STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]); 989 #endif 990 991 /* FAULT_INFO ATTR */ 992 #ifdef CONFIG_F2FS_FAULT_INJECTION 993 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate); 994 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type); 995 #endif 996 997 /* RESERVED_BLOCKS ATTR */ 998 RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks); 999 1000 /* CPRC_INFO ATTR */ 1001 CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio); 1002 1003 /* ATGC_INFO ATTR */ 1004 ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio); 1005 ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count); 1006 ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight); 1007 ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold); 1008 1009 F2FS_GENERAL_RO_ATTR(dirty_segments); 1010 F2FS_GENERAL_RO_ATTR(free_segments); 1011 F2FS_GENERAL_RO_ATTR(ovp_segments); 1012 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 1013 F2FS_GENERAL_RO_ATTR(features); 1014 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 1015 F2FS_GENERAL_RO_ATTR(unusable); 1016 F2FS_GENERAL_RO_ATTR(encoding); 1017 F2FS_GENERAL_RO_ATTR(mounted_time_sec); 1018 F2FS_GENERAL_RO_ATTR(main_blkaddr); 1019 F2FS_GENERAL_RO_ATTR(pending_discard); 1020 F2FS_GENERAL_RO_ATTR(gc_mode); 1021 #ifdef CONFIG_F2FS_STAT_FS 1022 F2FS_GENERAL_RO_ATTR(moved_blocks_background); 1023 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground); 1024 F2FS_GENERAL_RO_ATTR(avg_vblocks); 1025 #endif 1026 1027 #ifdef CONFIG_FS_ENCRYPTION 1028 F2FS_FEATURE_RO_ATTR(encryption); 1029 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2); 1030 #if IS_ENABLED(CONFIG_UNICODE) 1031 F2FS_FEATURE_RO_ATTR(encrypted_casefold); 1032 #endif 1033 #endif /* CONFIG_FS_ENCRYPTION */ 1034 #ifdef CONFIG_BLK_DEV_ZONED 1035 F2FS_FEATURE_RO_ATTR(block_zoned); 1036 #endif 1037 F2FS_FEATURE_RO_ATTR(atomic_write); 1038 F2FS_FEATURE_RO_ATTR(extra_attr); 1039 F2FS_FEATURE_RO_ATTR(project_quota); 1040 F2FS_FEATURE_RO_ATTR(inode_checksum); 1041 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr); 1042 F2FS_FEATURE_RO_ATTR(quota_ino); 1043 F2FS_FEATURE_RO_ATTR(inode_crtime); 1044 F2FS_FEATURE_RO_ATTR(lost_found); 1045 #ifdef CONFIG_FS_VERITY 1046 F2FS_FEATURE_RO_ATTR(verity); 1047 #endif 1048 F2FS_FEATURE_RO_ATTR(sb_checksum); 1049 #if IS_ENABLED(CONFIG_UNICODE) 1050 F2FS_FEATURE_RO_ATTR(casefold); 1051 #endif 1052 F2FS_FEATURE_RO_ATTR(readonly); 1053 #ifdef CONFIG_F2FS_FS_COMPRESSION 1054 F2FS_FEATURE_RO_ATTR(compression); 1055 #endif 1056 F2FS_FEATURE_RO_ATTR(pin_file); 1057 1058 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 1059 static struct attribute *f2fs_attrs[] = { 1060 ATTR_LIST(gc_urgent_sleep_time), 1061 ATTR_LIST(gc_min_sleep_time), 1062 ATTR_LIST(gc_max_sleep_time), 1063 ATTR_LIST(gc_no_gc_sleep_time), 1064 ATTR_LIST(gc_idle), 1065 ATTR_LIST(gc_urgent), 1066 ATTR_LIST(reclaim_segments), 1067 ATTR_LIST(main_blkaddr), 1068 ATTR_LIST(max_small_discards), 1069 ATTR_LIST(max_discard_request), 1070 ATTR_LIST(min_discard_issue_time), 1071 ATTR_LIST(mid_discard_issue_time), 1072 ATTR_LIST(max_discard_issue_time), 1073 ATTR_LIST(discard_io_aware_gran), 1074 ATTR_LIST(discard_urgent_util), 1075 ATTR_LIST(discard_granularity), 1076 ATTR_LIST(max_ordered_discard), 1077 ATTR_LIST(pending_discard), 1078 ATTR_LIST(gc_mode), 1079 ATTR_LIST(ipu_policy), 1080 ATTR_LIST(min_ipu_util), 1081 ATTR_LIST(min_fsync_blocks), 1082 ATTR_LIST(min_seq_blocks), 1083 ATTR_LIST(min_hot_blocks), 1084 ATTR_LIST(min_ssr_sections), 1085 ATTR_LIST(max_victim_search), 1086 ATTR_LIST(migration_granularity), 1087 ATTR_LIST(dir_level), 1088 ATTR_LIST(ram_thresh), 1089 ATTR_LIST(ra_nid_pages), 1090 ATTR_LIST(dirty_nats_ratio), 1091 ATTR_LIST(max_roll_forward_node_blocks), 1092 ATTR_LIST(cp_interval), 1093 ATTR_LIST(idle_interval), 1094 ATTR_LIST(discard_idle_interval), 1095 ATTR_LIST(gc_idle_interval), 1096 ATTR_LIST(umount_discard_timeout), 1097 #ifdef CONFIG_F2FS_IOSTAT 1098 ATTR_LIST(iostat_enable), 1099 ATTR_LIST(iostat_period_ms), 1100 #endif 1101 ATTR_LIST(readdir_ra), 1102 ATTR_LIST(max_io_bytes), 1103 ATTR_LIST(gc_pin_file_thresh), 1104 ATTR_LIST(extension_list), 1105 #ifdef CONFIG_F2FS_FAULT_INJECTION 1106 ATTR_LIST(inject_rate), 1107 ATTR_LIST(inject_type), 1108 #endif 1109 ATTR_LIST(data_io_flag), 1110 ATTR_LIST(node_io_flag), 1111 ATTR_LIST(gc_remaining_trials), 1112 ATTR_LIST(ckpt_thread_ioprio), 1113 ATTR_LIST(dirty_segments), 1114 ATTR_LIST(free_segments), 1115 ATTR_LIST(ovp_segments), 1116 ATTR_LIST(unusable), 1117 ATTR_LIST(lifetime_write_kbytes), 1118 ATTR_LIST(features), 1119 ATTR_LIST(reserved_blocks), 1120 ATTR_LIST(current_reserved_blocks), 1121 ATTR_LIST(encoding), 1122 ATTR_LIST(mounted_time_sec), 1123 #ifdef CONFIG_F2FS_STAT_FS 1124 ATTR_LIST(cp_foreground_calls), 1125 ATTR_LIST(cp_background_calls), 1126 ATTR_LIST(gc_foreground_calls), 1127 ATTR_LIST(gc_background_calls), 1128 ATTR_LIST(moved_blocks_foreground), 1129 ATTR_LIST(moved_blocks_background), 1130 ATTR_LIST(avg_vblocks), 1131 #endif 1132 #ifdef CONFIG_BLK_DEV_ZONED 1133 ATTR_LIST(unusable_blocks_per_sec), 1134 #endif 1135 #ifdef CONFIG_F2FS_FS_COMPRESSION 1136 ATTR_LIST(compr_written_block), 1137 ATTR_LIST(compr_saved_block), 1138 ATTR_LIST(compr_new_inode), 1139 ATTR_LIST(compress_percent), 1140 ATTR_LIST(compress_watermark), 1141 #endif 1142 /* For ATGC */ 1143 ATTR_LIST(atgc_candidate_ratio), 1144 ATTR_LIST(atgc_candidate_count), 1145 ATTR_LIST(atgc_age_weight), 1146 ATTR_LIST(atgc_age_threshold), 1147 ATTR_LIST(seq_file_ra_mul), 1148 ATTR_LIST(gc_segment_mode), 1149 ATTR_LIST(gc_reclaimed_segments), 1150 ATTR_LIST(max_fragment_chunk), 1151 ATTR_LIST(max_fragment_hole), 1152 ATTR_LIST(current_atomic_write), 1153 ATTR_LIST(peak_atomic_write), 1154 ATTR_LIST(committed_atomic_block), 1155 ATTR_LIST(revoked_atomic_block), 1156 ATTR_LIST(hot_data_age_threshold), 1157 ATTR_LIST(warm_data_age_threshold), 1158 ATTR_LIST(last_age_weight), 1159 NULL, 1160 }; 1161 ATTRIBUTE_GROUPS(f2fs); 1162 1163 static struct attribute *f2fs_feat_attrs[] = { 1164 #ifdef CONFIG_FS_ENCRYPTION 1165 ATTR_LIST(encryption), 1166 ATTR_LIST(test_dummy_encryption_v2), 1167 #if IS_ENABLED(CONFIG_UNICODE) 1168 ATTR_LIST(encrypted_casefold), 1169 #endif 1170 #endif /* CONFIG_FS_ENCRYPTION */ 1171 #ifdef CONFIG_BLK_DEV_ZONED 1172 ATTR_LIST(block_zoned), 1173 #endif 1174 ATTR_LIST(atomic_write), 1175 ATTR_LIST(extra_attr), 1176 ATTR_LIST(project_quota), 1177 ATTR_LIST(inode_checksum), 1178 ATTR_LIST(flexible_inline_xattr), 1179 ATTR_LIST(quota_ino), 1180 ATTR_LIST(inode_crtime), 1181 ATTR_LIST(lost_found), 1182 #ifdef CONFIG_FS_VERITY 1183 ATTR_LIST(verity), 1184 #endif 1185 ATTR_LIST(sb_checksum), 1186 #if IS_ENABLED(CONFIG_UNICODE) 1187 ATTR_LIST(casefold), 1188 #endif 1189 ATTR_LIST(readonly), 1190 #ifdef CONFIG_F2FS_FS_COMPRESSION 1191 ATTR_LIST(compression), 1192 #endif 1193 ATTR_LIST(pin_file), 1194 NULL, 1195 }; 1196 ATTRIBUTE_GROUPS(f2fs_feat); 1197 1198 F2FS_GENERAL_RO_ATTR(sb_status); 1199 F2FS_GENERAL_RO_ATTR(cp_status); 1200 static struct attribute *f2fs_stat_attrs[] = { 1201 ATTR_LIST(sb_status), 1202 ATTR_LIST(cp_status), 1203 NULL, 1204 }; 1205 ATTRIBUTE_GROUPS(f2fs_stat); 1206 1207 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT); 1208 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED); 1209 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR); 1210 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA); 1211 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM); 1212 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR); 1213 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO); 1214 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME); 1215 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND); 1216 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY); 1217 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM); 1218 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD); 1219 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION); 1220 F2FS_SB_FEATURE_RO_ATTR(readonly, RO); 1221 1222 static struct attribute *f2fs_sb_feat_attrs[] = { 1223 ATTR_LIST(sb_encryption), 1224 ATTR_LIST(sb_block_zoned), 1225 ATTR_LIST(sb_extra_attr), 1226 ATTR_LIST(sb_project_quota), 1227 ATTR_LIST(sb_inode_checksum), 1228 ATTR_LIST(sb_flexible_inline_xattr), 1229 ATTR_LIST(sb_quota_ino), 1230 ATTR_LIST(sb_inode_crtime), 1231 ATTR_LIST(sb_lost_found), 1232 ATTR_LIST(sb_verity), 1233 ATTR_LIST(sb_sb_checksum), 1234 ATTR_LIST(sb_casefold), 1235 ATTR_LIST(sb_compression), 1236 ATTR_LIST(sb_readonly), 1237 NULL, 1238 }; 1239 ATTRIBUTE_GROUPS(f2fs_sb_feat); 1240 1241 static const struct sysfs_ops f2fs_attr_ops = { 1242 .show = f2fs_attr_show, 1243 .store = f2fs_attr_store, 1244 }; 1245 1246 static const struct kobj_type f2fs_sb_ktype = { 1247 .default_groups = f2fs_groups, 1248 .sysfs_ops = &f2fs_attr_ops, 1249 .release = f2fs_sb_release, 1250 }; 1251 1252 static const struct kobj_type f2fs_ktype = { 1253 .sysfs_ops = &f2fs_attr_ops, 1254 }; 1255 1256 static struct kset f2fs_kset = { 1257 .kobj = {.ktype = &f2fs_ktype}, 1258 }; 1259 1260 static const struct kobj_type f2fs_feat_ktype = { 1261 .default_groups = f2fs_feat_groups, 1262 .sysfs_ops = &f2fs_attr_ops, 1263 }; 1264 1265 static struct kobject f2fs_feat = { 1266 .kset = &f2fs_kset, 1267 }; 1268 1269 static ssize_t f2fs_stat_attr_show(struct kobject *kobj, 1270 struct attribute *attr, char *buf) 1271 { 1272 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1273 s_stat_kobj); 1274 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1275 1276 return a->show ? a->show(a, sbi, buf) : 0; 1277 } 1278 1279 static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr, 1280 const char *buf, size_t len) 1281 { 1282 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1283 s_stat_kobj); 1284 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1285 1286 return a->store ? a->store(a, sbi, buf, len) : 0; 1287 } 1288 1289 static void f2fs_stat_kobj_release(struct kobject *kobj) 1290 { 1291 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1292 s_stat_kobj); 1293 complete(&sbi->s_stat_kobj_unregister); 1294 } 1295 1296 static const struct sysfs_ops f2fs_stat_attr_ops = { 1297 .show = f2fs_stat_attr_show, 1298 .store = f2fs_stat_attr_store, 1299 }; 1300 1301 static const struct kobj_type f2fs_stat_ktype = { 1302 .default_groups = f2fs_stat_groups, 1303 .sysfs_ops = &f2fs_stat_attr_ops, 1304 .release = f2fs_stat_kobj_release, 1305 }; 1306 1307 static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj, 1308 struct attribute *attr, char *buf) 1309 { 1310 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1311 s_feature_list_kobj); 1312 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1313 1314 return a->show ? a->show(a, sbi, buf) : 0; 1315 } 1316 1317 static void f2fs_feature_list_kobj_release(struct kobject *kobj) 1318 { 1319 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1320 s_feature_list_kobj); 1321 complete(&sbi->s_feature_list_kobj_unregister); 1322 } 1323 1324 static const struct sysfs_ops f2fs_feature_list_attr_ops = { 1325 .show = f2fs_sb_feat_attr_show, 1326 }; 1327 1328 static const struct kobj_type f2fs_feature_list_ktype = { 1329 .default_groups = f2fs_sb_feat_groups, 1330 .sysfs_ops = &f2fs_feature_list_attr_ops, 1331 .release = f2fs_feature_list_kobj_release, 1332 }; 1333 1334 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 1335 void *offset) 1336 { 1337 struct super_block *sb = seq->private; 1338 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1339 unsigned int total_segs = 1340 le32_to_cpu(sbi->raw_super->segment_count_main); 1341 int i; 1342 1343 seq_puts(seq, "format: segment_type|valid_blocks\n" 1344 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1345 1346 for (i = 0; i < total_segs; i++) { 1347 struct seg_entry *se = get_seg_entry(sbi, i); 1348 1349 if ((i % 10) == 0) 1350 seq_printf(seq, "%-10d", i); 1351 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 1352 if ((i % 10) == 9 || i == (total_segs - 1)) 1353 seq_putc(seq, '\n'); 1354 else 1355 seq_putc(seq, ' '); 1356 } 1357 1358 return 0; 1359 } 1360 1361 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 1362 void *offset) 1363 { 1364 struct super_block *sb = seq->private; 1365 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1366 unsigned int total_segs = 1367 le32_to_cpu(sbi->raw_super->segment_count_main); 1368 int i, j; 1369 1370 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 1371 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1372 1373 for (i = 0; i < total_segs; i++) { 1374 struct seg_entry *se = get_seg_entry(sbi, i); 1375 1376 seq_printf(seq, "%-10d", i); 1377 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 1378 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 1379 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 1380 seq_putc(seq, '\n'); 1381 } 1382 return 0; 1383 } 1384 1385 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 1386 void *offset) 1387 { 1388 struct super_block *sb = seq->private; 1389 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1390 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 1391 int i; 1392 1393 seq_puts(seq, "format: victim_secmap bitmaps\n"); 1394 1395 for (i = 0; i < MAIN_SECS(sbi); i++) { 1396 if ((i % 10) == 0) 1397 seq_printf(seq, "%-10d", i); 1398 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 1399 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 1400 seq_putc(seq, '\n'); 1401 else 1402 seq_putc(seq, ' '); 1403 } 1404 return 0; 1405 } 1406 1407 static int __maybe_unused discard_plist_seq_show(struct seq_file *seq, 1408 void *offset) 1409 { 1410 struct super_block *sb = seq->private; 1411 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1412 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 1413 int i, count; 1414 1415 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n"); 1416 if (!f2fs_realtime_discard_enable(sbi)) 1417 return 0; 1418 1419 if (dcc) { 1420 mutex_lock(&dcc->cmd_lock); 1421 for (i = 0; i < MAX_PLIST_NUM; i++) { 1422 struct list_head *pend_list; 1423 struct discard_cmd *dc, *tmp; 1424 1425 if (i % 8 == 0) 1426 seq_printf(seq, " %-3d", i); 1427 count = 0; 1428 pend_list = &dcc->pend_list[i]; 1429 list_for_each_entry_safe(dc, tmp, pend_list, list) 1430 count++; 1431 if (count) 1432 seq_printf(seq, " %7d", count); 1433 else 1434 seq_puts(seq, " ."); 1435 if (i % 8 == 7) 1436 seq_putc(seq, '\n'); 1437 } 1438 seq_putc(seq, '\n'); 1439 mutex_unlock(&dcc->cmd_lock); 1440 } 1441 1442 return 0; 1443 } 1444 1445 int __init f2fs_init_sysfs(void) 1446 { 1447 int ret; 1448 1449 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 1450 f2fs_kset.kobj.parent = fs_kobj; 1451 ret = kset_register(&f2fs_kset); 1452 if (ret) 1453 return ret; 1454 1455 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 1456 NULL, "features"); 1457 if (ret) 1458 goto put_kobject; 1459 1460 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 1461 if (!f2fs_proc_root) { 1462 ret = -ENOMEM; 1463 goto put_kobject; 1464 } 1465 1466 return 0; 1467 put_kobject: 1468 kobject_put(&f2fs_feat); 1469 kset_unregister(&f2fs_kset); 1470 return ret; 1471 } 1472 1473 void f2fs_exit_sysfs(void) 1474 { 1475 kobject_put(&f2fs_feat); 1476 kset_unregister(&f2fs_kset); 1477 remove_proc_entry("fs/f2fs", NULL); 1478 f2fs_proc_root = NULL; 1479 } 1480 1481 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 1482 { 1483 struct super_block *sb = sbi->sb; 1484 int err; 1485 1486 sbi->s_kobj.kset = &f2fs_kset; 1487 init_completion(&sbi->s_kobj_unregister); 1488 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 1489 "%s", sb->s_id); 1490 if (err) 1491 goto put_sb_kobj; 1492 1493 sbi->s_stat_kobj.kset = &f2fs_kset; 1494 init_completion(&sbi->s_stat_kobj_unregister); 1495 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype, 1496 &sbi->s_kobj, "stat"); 1497 if (err) 1498 goto put_stat_kobj; 1499 1500 sbi->s_feature_list_kobj.kset = &f2fs_kset; 1501 init_completion(&sbi->s_feature_list_kobj_unregister); 1502 err = kobject_init_and_add(&sbi->s_feature_list_kobj, 1503 &f2fs_feature_list_ktype, 1504 &sbi->s_kobj, "feature_list"); 1505 if (err) 1506 goto put_feature_list_kobj; 1507 1508 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 1509 if (!sbi->s_proc) { 1510 err = -ENOMEM; 1511 goto put_feature_list_kobj; 1512 } 1513 1514 proc_create_single_data("segment_info", 0444, sbi->s_proc, 1515 segment_info_seq_show, sb); 1516 proc_create_single_data("segment_bits", 0444, sbi->s_proc, 1517 segment_bits_seq_show, sb); 1518 #ifdef CONFIG_F2FS_IOSTAT 1519 proc_create_single_data("iostat_info", 0444, sbi->s_proc, 1520 iostat_info_seq_show, sb); 1521 #endif 1522 proc_create_single_data("victim_bits", 0444, sbi->s_proc, 1523 victim_bits_seq_show, sb); 1524 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc, 1525 discard_plist_seq_show, sb); 1526 return 0; 1527 put_feature_list_kobj: 1528 kobject_put(&sbi->s_feature_list_kobj); 1529 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1530 put_stat_kobj: 1531 kobject_put(&sbi->s_stat_kobj); 1532 wait_for_completion(&sbi->s_stat_kobj_unregister); 1533 put_sb_kobj: 1534 kobject_put(&sbi->s_kobj); 1535 wait_for_completion(&sbi->s_kobj_unregister); 1536 return err; 1537 } 1538 1539 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 1540 { 1541 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root); 1542 1543 kobject_put(&sbi->s_stat_kobj); 1544 wait_for_completion(&sbi->s_stat_kobj_unregister); 1545 kobject_put(&sbi->s_feature_list_kobj); 1546 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1547 1548 kobject_put(&sbi->s_kobj); 1549 wait_for_completion(&sbi->s_kobj_unregister); 1550 } 1551