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 len = 0; 316 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio); 317 int data = IOPRIO_PRIO_DATA(cprc->ckpt_thread_ioprio); 318 319 if (class == IOPRIO_CLASS_RT) 320 len += scnprintf(buf + len, PAGE_SIZE - len, "rt,"); 321 else if (class == IOPRIO_CLASS_BE) 322 len += scnprintf(buf + len, PAGE_SIZE - len, "be,"); 323 else 324 return -EINVAL; 325 326 len += scnprintf(buf + len, PAGE_SIZE - len, "%d\n", data); 327 return len; 328 } 329 330 #ifdef CONFIG_F2FS_FS_COMPRESSION 331 if (!strcmp(a->attr.name, "compr_written_block")) 332 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block); 333 334 if (!strcmp(a->attr.name, "compr_saved_block")) 335 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block); 336 337 if (!strcmp(a->attr.name, "compr_new_inode")) 338 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode); 339 #endif 340 341 if (!strcmp(a->attr.name, "gc_segment_mode")) 342 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode); 343 344 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 345 return sysfs_emit(buf, "%u\n", 346 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]); 347 } 348 349 if (!strcmp(a->attr.name, "current_atomic_write")) { 350 s64 current_write = atomic64_read(&sbi->current_atomic_write); 351 352 return sysfs_emit(buf, "%lld\n", current_write); 353 } 354 355 if (!strcmp(a->attr.name, "peak_atomic_write")) 356 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write); 357 358 if (!strcmp(a->attr.name, "committed_atomic_block")) 359 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block); 360 361 if (!strcmp(a->attr.name, "revoked_atomic_block")) 362 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block); 363 364 ui = (unsigned int *)(ptr + a->offset); 365 366 return sysfs_emit(buf, "%u\n", *ui); 367 } 368 369 static ssize_t __sbi_store(struct f2fs_attr *a, 370 struct f2fs_sb_info *sbi, 371 const char *buf, size_t count) 372 { 373 unsigned char *ptr; 374 unsigned long t; 375 unsigned int *ui; 376 ssize_t ret; 377 378 ptr = __struct_ptr(sbi, a->struct_type); 379 if (!ptr) 380 return -EINVAL; 381 382 if (!strcmp(a->attr.name, "extension_list")) { 383 const char *name = strim((char *)buf); 384 bool set = true, hot; 385 386 if (!strncmp(name, "[h]", 3)) 387 hot = true; 388 else if (!strncmp(name, "[c]", 3)) 389 hot = false; 390 else 391 return -EINVAL; 392 393 name += 3; 394 395 if (*name == '!') { 396 name++; 397 set = false; 398 } 399 400 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN) 401 return -EINVAL; 402 403 f2fs_down_write(&sbi->sb_lock); 404 405 ret = f2fs_update_extension_list(sbi, name, hot, set); 406 if (ret) 407 goto out; 408 409 ret = f2fs_commit_super(sbi, false); 410 if (ret) 411 f2fs_update_extension_list(sbi, name, hot, !set); 412 out: 413 f2fs_up_write(&sbi->sb_lock); 414 return ret ? ret : count; 415 } 416 417 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { 418 const char *name = strim((char *)buf); 419 struct ckpt_req_control *cprc = &sbi->cprc_info; 420 int class; 421 long data; 422 int ret; 423 424 if (!strncmp(name, "rt,", 3)) 425 class = IOPRIO_CLASS_RT; 426 else if (!strncmp(name, "be,", 3)) 427 class = IOPRIO_CLASS_BE; 428 else 429 return -EINVAL; 430 431 name += 3; 432 ret = kstrtol(name, 10, &data); 433 if (ret) 434 return ret; 435 if (data >= IOPRIO_NR_LEVELS || data < 0) 436 return -EINVAL; 437 438 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, data); 439 if (test_opt(sbi, MERGE_CHECKPOINT)) { 440 ret = set_task_ioprio(cprc->f2fs_issue_ckpt, 441 cprc->ckpt_thread_ioprio); 442 if (ret) 443 return ret; 444 } 445 446 return count; 447 } 448 449 ui = (unsigned int *)(ptr + a->offset); 450 451 ret = kstrtoul(skip_spaces(buf), 0, &t); 452 if (ret < 0) 453 return ret; 454 #ifdef CONFIG_F2FS_FAULT_INJECTION 455 if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) 456 return -EINVAL; 457 if (a->struct_type == FAULT_INFO_RATE && t >= UINT_MAX) 458 return -EINVAL; 459 #endif 460 if (a->struct_type == RESERVED_BLOCKS) { 461 spin_lock(&sbi->stat_lock); 462 if (t > (unsigned long)(sbi->user_block_count - 463 F2FS_OPTION(sbi).root_reserved_blocks - 464 sbi->blocks_per_seg * 465 SM_I(sbi)->additional_reserved_segments)) { 466 spin_unlock(&sbi->stat_lock); 467 return -EINVAL; 468 } 469 *ui = t; 470 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 471 sbi->user_block_count - valid_user_blocks(sbi)); 472 spin_unlock(&sbi->stat_lock); 473 return count; 474 } 475 476 if (!strcmp(a->attr.name, "discard_io_aware_gran")) { 477 if (t > MAX_PLIST_NUM) 478 return -EINVAL; 479 if (!f2fs_block_unit_discard(sbi)) 480 return -EINVAL; 481 if (t == *ui) 482 return count; 483 *ui = t; 484 return count; 485 } 486 487 if (!strcmp(a->attr.name, "discard_granularity")) { 488 if (t == 0 || t > MAX_PLIST_NUM) 489 return -EINVAL; 490 if (!f2fs_block_unit_discard(sbi)) 491 return -EINVAL; 492 if (t == *ui) 493 return count; 494 *ui = t; 495 return count; 496 } 497 498 if (!strcmp(a->attr.name, "max_ordered_discard")) { 499 if (t == 0 || t > MAX_PLIST_NUM) 500 return -EINVAL; 501 if (!f2fs_block_unit_discard(sbi)) 502 return -EINVAL; 503 *ui = t; 504 return count; 505 } 506 507 if (!strcmp(a->attr.name, "discard_urgent_util")) { 508 if (t > 100) 509 return -EINVAL; 510 *ui = t; 511 return count; 512 } 513 514 if (!strcmp(a->attr.name, "migration_granularity")) { 515 if (t == 0 || t > sbi->segs_per_sec) 516 return -EINVAL; 517 } 518 519 if (!strcmp(a->attr.name, "gc_urgent")) { 520 if (t == 0) { 521 sbi->gc_mode = GC_NORMAL; 522 } else if (t == 1) { 523 sbi->gc_mode = GC_URGENT_HIGH; 524 if (sbi->gc_thread) { 525 sbi->gc_thread->gc_wake = true; 526 wake_up_interruptible_all( 527 &sbi->gc_thread->gc_wait_queue_head); 528 wake_up_discard_thread(sbi, true); 529 } 530 } else if (t == 2) { 531 sbi->gc_mode = GC_URGENT_LOW; 532 } else if (t == 3) { 533 sbi->gc_mode = GC_URGENT_MID; 534 if (sbi->gc_thread) { 535 sbi->gc_thread->gc_wake = true; 536 wake_up_interruptible_all( 537 &sbi->gc_thread->gc_wait_queue_head); 538 } 539 } else { 540 return -EINVAL; 541 } 542 return count; 543 } 544 if (!strcmp(a->attr.name, "gc_idle")) { 545 if (t == GC_IDLE_CB) { 546 sbi->gc_mode = GC_IDLE_CB; 547 } else if (t == GC_IDLE_GREEDY) { 548 sbi->gc_mode = GC_IDLE_GREEDY; 549 } else if (t == GC_IDLE_AT) { 550 if (!sbi->am.atgc_enabled) 551 return -EINVAL; 552 sbi->gc_mode = GC_IDLE_AT; 553 } else { 554 sbi->gc_mode = GC_NORMAL; 555 } 556 return count; 557 } 558 559 if (!strcmp(a->attr.name, "gc_remaining_trials")) { 560 spin_lock(&sbi->gc_remaining_trials_lock); 561 sbi->gc_remaining_trials = t; 562 spin_unlock(&sbi->gc_remaining_trials_lock); 563 564 return count; 565 } 566 567 #ifdef CONFIG_F2FS_IOSTAT 568 if (!strcmp(a->attr.name, "iostat_enable")) { 569 sbi->iostat_enable = !!t; 570 if (!sbi->iostat_enable) 571 f2fs_reset_iostat(sbi); 572 return count; 573 } 574 575 if (!strcmp(a->attr.name, "iostat_period_ms")) { 576 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS) 577 return -EINVAL; 578 spin_lock(&sbi->iostat_lock); 579 sbi->iostat_period_ms = (unsigned int)t; 580 spin_unlock(&sbi->iostat_lock); 581 return count; 582 } 583 #endif 584 585 #ifdef CONFIG_F2FS_FS_COMPRESSION 586 if (!strcmp(a->attr.name, "compr_written_block") || 587 !strcmp(a->attr.name, "compr_saved_block")) { 588 if (t != 0) 589 return -EINVAL; 590 sbi->compr_written_block = 0; 591 sbi->compr_saved_block = 0; 592 return count; 593 } 594 595 if (!strcmp(a->attr.name, "compr_new_inode")) { 596 if (t != 0) 597 return -EINVAL; 598 sbi->compr_new_inode = 0; 599 return count; 600 } 601 #endif 602 603 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) { 604 if (t > 100) 605 return -EINVAL; 606 sbi->am.candidate_ratio = t; 607 return count; 608 } 609 610 if (!strcmp(a->attr.name, "atgc_age_weight")) { 611 if (t > 100) 612 return -EINVAL; 613 sbi->am.age_weight = t; 614 return count; 615 } 616 617 if (!strcmp(a->attr.name, "gc_segment_mode")) { 618 if (t < MAX_GC_MODE) 619 sbi->gc_segment_mode = t; 620 else 621 return -EINVAL; 622 return count; 623 } 624 625 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 626 if (t != 0) 627 return -EINVAL; 628 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0; 629 return count; 630 } 631 632 if (!strcmp(a->attr.name, "seq_file_ra_mul")) { 633 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL) 634 sbi->seq_file_ra_mul = t; 635 else 636 return -EINVAL; 637 return count; 638 } 639 640 if (!strcmp(a->attr.name, "max_fragment_chunk")) { 641 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 642 sbi->max_fragment_chunk = t; 643 else 644 return -EINVAL; 645 return count; 646 } 647 648 if (!strcmp(a->attr.name, "max_fragment_hole")) { 649 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 650 sbi->max_fragment_hole = t; 651 else 652 return -EINVAL; 653 return count; 654 } 655 656 if (!strcmp(a->attr.name, "peak_atomic_write")) { 657 if (t != 0) 658 return -EINVAL; 659 sbi->peak_atomic_write = 0; 660 return count; 661 } 662 663 if (!strcmp(a->attr.name, "committed_atomic_block")) { 664 if (t != 0) 665 return -EINVAL; 666 sbi->committed_atomic_block = 0; 667 return count; 668 } 669 670 if (!strcmp(a->attr.name, "revoked_atomic_block")) { 671 if (t != 0) 672 return -EINVAL; 673 sbi->revoked_atomic_block = 0; 674 return count; 675 } 676 677 if (!strcmp(a->attr.name, "readdir_ra")) { 678 sbi->readdir_ra = !!t; 679 return count; 680 } 681 682 if (!strcmp(a->attr.name, "hot_data_age_threshold")) { 683 if (t == 0 || t >= sbi->warm_data_age_threshold) 684 return -EINVAL; 685 if (t == *ui) 686 return count; 687 *ui = (unsigned int)t; 688 return count; 689 } 690 691 if (!strcmp(a->attr.name, "warm_data_age_threshold")) { 692 if (t <= sbi->hot_data_age_threshold) 693 return -EINVAL; 694 if (t == *ui) 695 return count; 696 *ui = (unsigned int)t; 697 return count; 698 } 699 700 if (!strcmp(a->attr.name, "last_age_weight")) { 701 if (t > 100) 702 return -EINVAL; 703 if (t == *ui) 704 return count; 705 *ui = (unsigned int)t; 706 return count; 707 } 708 709 if (!strcmp(a->attr.name, "ipu_policy")) { 710 if (t >= BIT(F2FS_IPU_MAX)) 711 return -EINVAL; 712 if (t && f2fs_lfs_mode(sbi)) 713 return -EINVAL; 714 SM_I(sbi)->ipu_policy = (unsigned int)t; 715 return count; 716 } 717 718 *ui = (unsigned int)t; 719 720 return count; 721 } 722 723 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 724 struct f2fs_sb_info *sbi, 725 const char *buf, size_t count) 726 { 727 ssize_t ret; 728 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 729 a->struct_type == GC_THREAD); 730 731 if (gc_entry) { 732 if (!down_read_trylock(&sbi->sb->s_umount)) 733 return -EAGAIN; 734 } 735 ret = __sbi_store(a, sbi, buf, count); 736 if (gc_entry) 737 up_read(&sbi->sb->s_umount); 738 739 return ret; 740 } 741 742 static ssize_t f2fs_attr_show(struct kobject *kobj, 743 struct attribute *attr, char *buf) 744 { 745 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 746 s_kobj); 747 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 748 749 return a->show ? a->show(a, sbi, buf) : 0; 750 } 751 752 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 753 const char *buf, size_t len) 754 { 755 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 756 s_kobj); 757 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 758 759 return a->store ? a->store(a, sbi, buf, len) : 0; 760 } 761 762 static void f2fs_sb_release(struct kobject *kobj) 763 { 764 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 765 s_kobj); 766 complete(&sbi->s_kobj_unregister); 767 } 768 769 /* 770 * Note that there are three feature list entries: 771 * 1) /sys/fs/f2fs/features 772 * : shows runtime features supported by in-kernel f2fs along with Kconfig. 773 * - ref. F2FS_FEATURE_RO_ATTR() 774 * 775 * 2) /sys/fs/f2fs/$s_id/features <deprecated> 776 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This 777 * won't add new feature anymore, and thus, users should check entries in 3) 778 * instead of this 2). 779 * 780 * 3) /sys/fs/f2fs/$s_id/feature_list 781 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows 782 * sysfs entry rule where each entry should expose single value. 783 * This list covers old feature list provided by 2) and beyond. Therefore, 784 * please add new on-disk feature in this list only. 785 * - ref. F2FS_SB_FEATURE_RO_ATTR() 786 */ 787 static ssize_t f2fs_feature_show(struct f2fs_attr *a, 788 struct f2fs_sb_info *sbi, char *buf) 789 { 790 return sysfs_emit(buf, "supported\n"); 791 } 792 793 #define F2FS_FEATURE_RO_ATTR(_name) \ 794 static struct f2fs_attr f2fs_attr_##_name = { \ 795 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 796 .show = f2fs_feature_show, \ 797 } 798 799 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a, 800 struct f2fs_sb_info *sbi, char *buf) 801 { 802 if (F2FS_HAS_FEATURE(sbi, a->id)) 803 return sysfs_emit(buf, "supported\n"); 804 return sysfs_emit(buf, "unsupported\n"); 805 } 806 807 #define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \ 808 static struct f2fs_attr f2fs_attr_sb_##_name = { \ 809 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 810 .show = f2fs_sb_feature_show, \ 811 .id = F2FS_FEATURE_##_feat, \ 812 } 813 814 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 815 static struct f2fs_attr f2fs_attr_##_name = { \ 816 .attr = {.name = __stringify(_name), .mode = _mode }, \ 817 .show = _show, \ 818 .store = _store, \ 819 .struct_type = _struct_type, \ 820 .offset = _offset \ 821 } 822 823 #define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \ 824 F2FS_ATTR_OFFSET(struct_type, name, 0444, \ 825 f2fs_sbi_show, NULL, \ 826 offsetof(struct struct_name, elname)) 827 828 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 829 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 830 f2fs_sbi_show, f2fs_sbi_store, \ 831 offsetof(struct struct_name, elname)) 832 833 #define F2FS_GENERAL_RO_ATTR(name) \ 834 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 835 836 #define F2FS_STAT_ATTR(_struct_type, _struct_name, _name, _elname) \ 837 static struct f2fs_attr f2fs_attr_##_name = { \ 838 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 839 .show = f2fs_sbi_show, \ 840 .struct_type = _struct_type, \ 841 .offset = offsetof(struct _struct_name, _elname), \ 842 } 843 844 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_urgent_sleep_time, 845 urgent_sleep_time); 846 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); 847 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); 848 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); 849 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle, gc_mode); 850 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_urgent, gc_mode); 851 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); 852 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_small_discards, max_discards); 853 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_discard_request, max_discard_request); 854 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, min_discard_issue_time, min_discard_issue_time); 855 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, mid_discard_issue_time, mid_discard_issue_time); 856 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_discard_issue_time, max_discard_issue_time); 857 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_io_aware_gran, discard_io_aware_gran); 858 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_urgent_util, discard_urgent_util); 859 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, discard_granularity, discard_granularity); 860 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, max_ordered_discard, max_ordered_discard); 861 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, reserved_blocks, reserved_blocks); 862 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); 863 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); 864 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); 865 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_seq_blocks, min_seq_blocks); 866 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_hot_blocks, min_hot_blocks); 867 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ssr_sections, min_ssr_sections); 868 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); 869 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); 870 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); 871 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, max_roll_forward_node_blocks, max_rf_node_blocks); 872 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); 873 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, migration_granularity, migration_granularity); 874 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); 875 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); 876 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); 877 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, discard_idle_interval, 878 interval_time[DISCARD_TIME]); 879 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_idle_interval, interval_time[GC_TIME]); 880 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, 881 umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 882 #ifdef CONFIG_F2FS_IOSTAT 883 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_enable, iostat_enable); 884 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, iostat_period_ms, iostat_period_ms); 885 #endif 886 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, readdir_ra, readdir_ra); 887 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_io_bytes, max_io_bytes); 888 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_pin_file_thresh, gc_pin_file_threshold); 889 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 890 #ifdef CONFIG_F2FS_FAULT_INJECTION 891 F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); 892 F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); 893 #endif 894 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, data_io_flag, data_io_flag); 895 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, node_io_flag, node_io_flag); 896 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_remaining_trials, gc_remaining_trials); 897 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, ckpt_thread_ioprio, ckpt_thread_ioprio); 898 F2FS_GENERAL_RO_ATTR(dirty_segments); 899 F2FS_GENERAL_RO_ATTR(free_segments); 900 F2FS_GENERAL_RO_ATTR(ovp_segments); 901 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 902 F2FS_GENERAL_RO_ATTR(features); 903 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 904 F2FS_GENERAL_RO_ATTR(unusable); 905 F2FS_GENERAL_RO_ATTR(encoding); 906 F2FS_GENERAL_RO_ATTR(mounted_time_sec); 907 F2FS_GENERAL_RO_ATTR(main_blkaddr); 908 F2FS_GENERAL_RO_ATTR(pending_discard); 909 F2FS_GENERAL_RO_ATTR(gc_mode); 910 #ifdef CONFIG_F2FS_STAT_FS 911 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_foreground_calls, cp_count); 912 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, cp_background_calls, bg_cp_count); 913 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_foreground_calls, call_count); 914 F2FS_STAT_ATTR(STAT_INFO, f2fs_stat_info, gc_background_calls, bg_gc); 915 F2FS_GENERAL_RO_ATTR(moved_blocks_background); 916 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground); 917 F2FS_GENERAL_RO_ATTR(avg_vblocks); 918 #endif 919 920 #ifdef CONFIG_FS_ENCRYPTION 921 F2FS_FEATURE_RO_ATTR(encryption); 922 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2); 923 #if IS_ENABLED(CONFIG_UNICODE) 924 F2FS_FEATURE_RO_ATTR(encrypted_casefold); 925 #endif 926 #endif /* CONFIG_FS_ENCRYPTION */ 927 #ifdef CONFIG_BLK_DEV_ZONED 928 F2FS_FEATURE_RO_ATTR(block_zoned); 929 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, unusable_blocks_per_sec, 930 unusable_blocks_per_sec); 931 #endif 932 F2FS_FEATURE_RO_ATTR(atomic_write); 933 F2FS_FEATURE_RO_ATTR(extra_attr); 934 F2FS_FEATURE_RO_ATTR(project_quota); 935 F2FS_FEATURE_RO_ATTR(inode_checksum); 936 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr); 937 F2FS_FEATURE_RO_ATTR(quota_ino); 938 F2FS_FEATURE_RO_ATTR(inode_crtime); 939 F2FS_FEATURE_RO_ATTR(lost_found); 940 #ifdef CONFIG_FS_VERITY 941 F2FS_FEATURE_RO_ATTR(verity); 942 #endif 943 F2FS_FEATURE_RO_ATTR(sb_checksum); 944 #if IS_ENABLED(CONFIG_UNICODE) 945 F2FS_FEATURE_RO_ATTR(casefold); 946 #endif 947 F2FS_FEATURE_RO_ATTR(readonly); 948 #ifdef CONFIG_F2FS_FS_COMPRESSION 949 F2FS_FEATURE_RO_ATTR(compression); 950 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_written_block, compr_written_block); 951 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_saved_block, compr_saved_block); 952 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, compr_new_inode, compr_new_inode); 953 #endif 954 F2FS_FEATURE_RO_ATTR(pin_file); 955 956 /* For ATGC */ 957 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_ratio, candidate_ratio); 958 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_candidate_count, max_candidate_count); 959 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_weight, age_weight); 960 F2FS_RW_ATTR(ATGC_INFO, atgc_management, atgc_age_threshold, age_threshold); 961 962 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, seq_file_ra_mul, seq_file_ra_mul); 963 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_segment_mode, gc_segment_mode); 964 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, gc_reclaimed_segments, gc_reclaimed_segs); 965 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_fragment_chunk, max_fragment_chunk); 966 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_fragment_hole, max_fragment_hole); 967 968 /* For atomic write */ 969 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, current_atomic_write, current_atomic_write); 970 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, peak_atomic_write, peak_atomic_write); 971 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, committed_atomic_block, committed_atomic_block); 972 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, revoked_atomic_block, revoked_atomic_block); 973 974 /* For block age extent cache */ 975 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, hot_data_age_threshold, hot_data_age_threshold); 976 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, warm_data_age_threshold, warm_data_age_threshold); 977 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, last_age_weight, last_age_weight); 978 979 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 980 static struct attribute *f2fs_attrs[] = { 981 ATTR_LIST(gc_urgent_sleep_time), 982 ATTR_LIST(gc_min_sleep_time), 983 ATTR_LIST(gc_max_sleep_time), 984 ATTR_LIST(gc_no_gc_sleep_time), 985 ATTR_LIST(gc_idle), 986 ATTR_LIST(gc_urgent), 987 ATTR_LIST(reclaim_segments), 988 ATTR_LIST(main_blkaddr), 989 ATTR_LIST(max_small_discards), 990 ATTR_LIST(max_discard_request), 991 ATTR_LIST(min_discard_issue_time), 992 ATTR_LIST(mid_discard_issue_time), 993 ATTR_LIST(max_discard_issue_time), 994 ATTR_LIST(discard_io_aware_gran), 995 ATTR_LIST(discard_urgent_util), 996 ATTR_LIST(discard_granularity), 997 ATTR_LIST(max_ordered_discard), 998 ATTR_LIST(pending_discard), 999 ATTR_LIST(gc_mode), 1000 ATTR_LIST(ipu_policy), 1001 ATTR_LIST(min_ipu_util), 1002 ATTR_LIST(min_fsync_blocks), 1003 ATTR_LIST(min_seq_blocks), 1004 ATTR_LIST(min_hot_blocks), 1005 ATTR_LIST(min_ssr_sections), 1006 ATTR_LIST(max_victim_search), 1007 ATTR_LIST(migration_granularity), 1008 ATTR_LIST(dir_level), 1009 ATTR_LIST(ram_thresh), 1010 ATTR_LIST(ra_nid_pages), 1011 ATTR_LIST(dirty_nats_ratio), 1012 ATTR_LIST(max_roll_forward_node_blocks), 1013 ATTR_LIST(cp_interval), 1014 ATTR_LIST(idle_interval), 1015 ATTR_LIST(discard_idle_interval), 1016 ATTR_LIST(gc_idle_interval), 1017 ATTR_LIST(umount_discard_timeout), 1018 #ifdef CONFIG_F2FS_IOSTAT 1019 ATTR_LIST(iostat_enable), 1020 ATTR_LIST(iostat_period_ms), 1021 #endif 1022 ATTR_LIST(readdir_ra), 1023 ATTR_LIST(max_io_bytes), 1024 ATTR_LIST(gc_pin_file_thresh), 1025 ATTR_LIST(extension_list), 1026 #ifdef CONFIG_F2FS_FAULT_INJECTION 1027 ATTR_LIST(inject_rate), 1028 ATTR_LIST(inject_type), 1029 #endif 1030 ATTR_LIST(data_io_flag), 1031 ATTR_LIST(node_io_flag), 1032 ATTR_LIST(gc_remaining_trials), 1033 ATTR_LIST(ckpt_thread_ioprio), 1034 ATTR_LIST(dirty_segments), 1035 ATTR_LIST(free_segments), 1036 ATTR_LIST(ovp_segments), 1037 ATTR_LIST(unusable), 1038 ATTR_LIST(lifetime_write_kbytes), 1039 ATTR_LIST(features), 1040 ATTR_LIST(reserved_blocks), 1041 ATTR_LIST(current_reserved_blocks), 1042 ATTR_LIST(encoding), 1043 ATTR_LIST(mounted_time_sec), 1044 #ifdef CONFIG_F2FS_STAT_FS 1045 ATTR_LIST(cp_foreground_calls), 1046 ATTR_LIST(cp_background_calls), 1047 ATTR_LIST(gc_foreground_calls), 1048 ATTR_LIST(gc_background_calls), 1049 ATTR_LIST(moved_blocks_foreground), 1050 ATTR_LIST(moved_blocks_background), 1051 ATTR_LIST(avg_vblocks), 1052 #endif 1053 #ifdef CONFIG_BLK_DEV_ZONED 1054 ATTR_LIST(unusable_blocks_per_sec), 1055 #endif 1056 #ifdef CONFIG_F2FS_FS_COMPRESSION 1057 ATTR_LIST(compr_written_block), 1058 ATTR_LIST(compr_saved_block), 1059 ATTR_LIST(compr_new_inode), 1060 #endif 1061 /* For ATGC */ 1062 ATTR_LIST(atgc_candidate_ratio), 1063 ATTR_LIST(atgc_candidate_count), 1064 ATTR_LIST(atgc_age_weight), 1065 ATTR_LIST(atgc_age_threshold), 1066 ATTR_LIST(seq_file_ra_mul), 1067 ATTR_LIST(gc_segment_mode), 1068 ATTR_LIST(gc_reclaimed_segments), 1069 ATTR_LIST(max_fragment_chunk), 1070 ATTR_LIST(max_fragment_hole), 1071 ATTR_LIST(current_atomic_write), 1072 ATTR_LIST(peak_atomic_write), 1073 ATTR_LIST(committed_atomic_block), 1074 ATTR_LIST(revoked_atomic_block), 1075 ATTR_LIST(hot_data_age_threshold), 1076 ATTR_LIST(warm_data_age_threshold), 1077 ATTR_LIST(last_age_weight), 1078 NULL, 1079 }; 1080 ATTRIBUTE_GROUPS(f2fs); 1081 1082 static struct attribute *f2fs_feat_attrs[] = { 1083 #ifdef CONFIG_FS_ENCRYPTION 1084 ATTR_LIST(encryption), 1085 ATTR_LIST(test_dummy_encryption_v2), 1086 #if IS_ENABLED(CONFIG_UNICODE) 1087 ATTR_LIST(encrypted_casefold), 1088 #endif 1089 #endif /* CONFIG_FS_ENCRYPTION */ 1090 #ifdef CONFIG_BLK_DEV_ZONED 1091 ATTR_LIST(block_zoned), 1092 #endif 1093 ATTR_LIST(atomic_write), 1094 ATTR_LIST(extra_attr), 1095 ATTR_LIST(project_quota), 1096 ATTR_LIST(inode_checksum), 1097 ATTR_LIST(flexible_inline_xattr), 1098 ATTR_LIST(quota_ino), 1099 ATTR_LIST(inode_crtime), 1100 ATTR_LIST(lost_found), 1101 #ifdef CONFIG_FS_VERITY 1102 ATTR_LIST(verity), 1103 #endif 1104 ATTR_LIST(sb_checksum), 1105 #if IS_ENABLED(CONFIG_UNICODE) 1106 ATTR_LIST(casefold), 1107 #endif 1108 ATTR_LIST(readonly), 1109 #ifdef CONFIG_F2FS_FS_COMPRESSION 1110 ATTR_LIST(compression), 1111 #endif 1112 ATTR_LIST(pin_file), 1113 NULL, 1114 }; 1115 ATTRIBUTE_GROUPS(f2fs_feat); 1116 1117 F2FS_GENERAL_RO_ATTR(sb_status); 1118 F2FS_GENERAL_RO_ATTR(cp_status); 1119 static struct attribute *f2fs_stat_attrs[] = { 1120 ATTR_LIST(sb_status), 1121 ATTR_LIST(cp_status), 1122 NULL, 1123 }; 1124 ATTRIBUTE_GROUPS(f2fs_stat); 1125 1126 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT); 1127 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED); 1128 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR); 1129 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA); 1130 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM); 1131 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR); 1132 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO); 1133 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME); 1134 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND); 1135 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY); 1136 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM); 1137 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD); 1138 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION); 1139 F2FS_SB_FEATURE_RO_ATTR(readonly, RO); 1140 1141 static struct attribute *f2fs_sb_feat_attrs[] = { 1142 ATTR_LIST(sb_encryption), 1143 ATTR_LIST(sb_block_zoned), 1144 ATTR_LIST(sb_extra_attr), 1145 ATTR_LIST(sb_project_quota), 1146 ATTR_LIST(sb_inode_checksum), 1147 ATTR_LIST(sb_flexible_inline_xattr), 1148 ATTR_LIST(sb_quota_ino), 1149 ATTR_LIST(sb_inode_crtime), 1150 ATTR_LIST(sb_lost_found), 1151 ATTR_LIST(sb_verity), 1152 ATTR_LIST(sb_sb_checksum), 1153 ATTR_LIST(sb_casefold), 1154 ATTR_LIST(sb_compression), 1155 ATTR_LIST(sb_readonly), 1156 NULL, 1157 }; 1158 ATTRIBUTE_GROUPS(f2fs_sb_feat); 1159 1160 static const struct sysfs_ops f2fs_attr_ops = { 1161 .show = f2fs_attr_show, 1162 .store = f2fs_attr_store, 1163 }; 1164 1165 static const struct kobj_type f2fs_sb_ktype = { 1166 .default_groups = f2fs_groups, 1167 .sysfs_ops = &f2fs_attr_ops, 1168 .release = f2fs_sb_release, 1169 }; 1170 1171 static const struct kobj_type f2fs_ktype = { 1172 .sysfs_ops = &f2fs_attr_ops, 1173 }; 1174 1175 static struct kset f2fs_kset = { 1176 .kobj = {.ktype = &f2fs_ktype}, 1177 }; 1178 1179 static const struct kobj_type f2fs_feat_ktype = { 1180 .default_groups = f2fs_feat_groups, 1181 .sysfs_ops = &f2fs_attr_ops, 1182 }; 1183 1184 static struct kobject f2fs_feat = { 1185 .kset = &f2fs_kset, 1186 }; 1187 1188 static ssize_t f2fs_stat_attr_show(struct kobject *kobj, 1189 struct attribute *attr, char *buf) 1190 { 1191 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1192 s_stat_kobj); 1193 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1194 1195 return a->show ? a->show(a, sbi, buf) : 0; 1196 } 1197 1198 static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr, 1199 const char *buf, size_t len) 1200 { 1201 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1202 s_stat_kobj); 1203 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1204 1205 return a->store ? a->store(a, sbi, buf, len) : 0; 1206 } 1207 1208 static void f2fs_stat_kobj_release(struct kobject *kobj) 1209 { 1210 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1211 s_stat_kobj); 1212 complete(&sbi->s_stat_kobj_unregister); 1213 } 1214 1215 static const struct sysfs_ops f2fs_stat_attr_ops = { 1216 .show = f2fs_stat_attr_show, 1217 .store = f2fs_stat_attr_store, 1218 }; 1219 1220 static const struct kobj_type f2fs_stat_ktype = { 1221 .default_groups = f2fs_stat_groups, 1222 .sysfs_ops = &f2fs_stat_attr_ops, 1223 .release = f2fs_stat_kobj_release, 1224 }; 1225 1226 static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj, 1227 struct attribute *attr, char *buf) 1228 { 1229 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1230 s_feature_list_kobj); 1231 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1232 1233 return a->show ? a->show(a, sbi, buf) : 0; 1234 } 1235 1236 static void f2fs_feature_list_kobj_release(struct kobject *kobj) 1237 { 1238 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1239 s_feature_list_kobj); 1240 complete(&sbi->s_feature_list_kobj_unregister); 1241 } 1242 1243 static const struct sysfs_ops f2fs_feature_list_attr_ops = { 1244 .show = f2fs_sb_feat_attr_show, 1245 }; 1246 1247 static const struct kobj_type f2fs_feature_list_ktype = { 1248 .default_groups = f2fs_sb_feat_groups, 1249 .sysfs_ops = &f2fs_feature_list_attr_ops, 1250 .release = f2fs_feature_list_kobj_release, 1251 }; 1252 1253 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 1254 void *offset) 1255 { 1256 struct super_block *sb = seq->private; 1257 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1258 unsigned int total_segs = 1259 le32_to_cpu(sbi->raw_super->segment_count_main); 1260 int i; 1261 1262 seq_puts(seq, "format: segment_type|valid_blocks\n" 1263 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1264 1265 for (i = 0; i < total_segs; i++) { 1266 struct seg_entry *se = get_seg_entry(sbi, i); 1267 1268 if ((i % 10) == 0) 1269 seq_printf(seq, "%-10d", i); 1270 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 1271 if ((i % 10) == 9 || i == (total_segs - 1)) 1272 seq_putc(seq, '\n'); 1273 else 1274 seq_putc(seq, ' '); 1275 } 1276 1277 return 0; 1278 } 1279 1280 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 1281 void *offset) 1282 { 1283 struct super_block *sb = seq->private; 1284 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1285 unsigned int total_segs = 1286 le32_to_cpu(sbi->raw_super->segment_count_main); 1287 int i, j; 1288 1289 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 1290 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1291 1292 for (i = 0; i < total_segs; i++) { 1293 struct seg_entry *se = get_seg_entry(sbi, i); 1294 1295 seq_printf(seq, "%-10d", i); 1296 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 1297 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 1298 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 1299 seq_putc(seq, '\n'); 1300 } 1301 return 0; 1302 } 1303 1304 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 1305 void *offset) 1306 { 1307 struct super_block *sb = seq->private; 1308 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1309 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 1310 int i; 1311 1312 seq_puts(seq, "format: victim_secmap bitmaps\n"); 1313 1314 for (i = 0; i < MAIN_SECS(sbi); i++) { 1315 if ((i % 10) == 0) 1316 seq_printf(seq, "%-10d", i); 1317 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 1318 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 1319 seq_putc(seq, '\n'); 1320 else 1321 seq_putc(seq, ' '); 1322 } 1323 return 0; 1324 } 1325 1326 static int __maybe_unused discard_plist_seq_show(struct seq_file *seq, 1327 void *offset) 1328 { 1329 struct super_block *sb = seq->private; 1330 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1331 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 1332 int i, count; 1333 1334 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n"); 1335 if (!f2fs_realtime_discard_enable(sbi)) 1336 return 0; 1337 1338 if (dcc) { 1339 mutex_lock(&dcc->cmd_lock); 1340 for (i = 0; i < MAX_PLIST_NUM; i++) { 1341 struct list_head *pend_list; 1342 struct discard_cmd *dc, *tmp; 1343 1344 if (i % 8 == 0) 1345 seq_printf(seq, " %-3d", i); 1346 count = 0; 1347 pend_list = &dcc->pend_list[i]; 1348 list_for_each_entry_safe(dc, tmp, pend_list, list) 1349 count++; 1350 if (count) 1351 seq_printf(seq, " %7d", count); 1352 else 1353 seq_puts(seq, " ."); 1354 if (i % 8 == 7) 1355 seq_putc(seq, '\n'); 1356 } 1357 seq_putc(seq, '\n'); 1358 mutex_unlock(&dcc->cmd_lock); 1359 } 1360 1361 return 0; 1362 } 1363 1364 int __init f2fs_init_sysfs(void) 1365 { 1366 int ret; 1367 1368 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 1369 f2fs_kset.kobj.parent = fs_kobj; 1370 ret = kset_register(&f2fs_kset); 1371 if (ret) 1372 return ret; 1373 1374 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 1375 NULL, "features"); 1376 if (ret) { 1377 kobject_put(&f2fs_feat); 1378 kset_unregister(&f2fs_kset); 1379 } else { 1380 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 1381 } 1382 return ret; 1383 } 1384 1385 void f2fs_exit_sysfs(void) 1386 { 1387 kobject_put(&f2fs_feat); 1388 kset_unregister(&f2fs_kset); 1389 remove_proc_entry("fs/f2fs", NULL); 1390 f2fs_proc_root = NULL; 1391 } 1392 1393 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 1394 { 1395 struct super_block *sb = sbi->sb; 1396 int err; 1397 1398 sbi->s_kobj.kset = &f2fs_kset; 1399 init_completion(&sbi->s_kobj_unregister); 1400 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 1401 "%s", sb->s_id); 1402 if (err) 1403 goto put_sb_kobj; 1404 1405 sbi->s_stat_kobj.kset = &f2fs_kset; 1406 init_completion(&sbi->s_stat_kobj_unregister); 1407 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype, 1408 &sbi->s_kobj, "stat"); 1409 if (err) 1410 goto put_stat_kobj; 1411 1412 sbi->s_feature_list_kobj.kset = &f2fs_kset; 1413 init_completion(&sbi->s_feature_list_kobj_unregister); 1414 err = kobject_init_and_add(&sbi->s_feature_list_kobj, 1415 &f2fs_feature_list_ktype, 1416 &sbi->s_kobj, "feature_list"); 1417 if (err) 1418 goto put_feature_list_kobj; 1419 1420 if (f2fs_proc_root) 1421 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 1422 1423 if (sbi->s_proc) { 1424 proc_create_single_data("segment_info", 0444, sbi->s_proc, 1425 segment_info_seq_show, sb); 1426 proc_create_single_data("segment_bits", 0444, sbi->s_proc, 1427 segment_bits_seq_show, sb); 1428 #ifdef CONFIG_F2FS_IOSTAT 1429 proc_create_single_data("iostat_info", 0444, sbi->s_proc, 1430 iostat_info_seq_show, sb); 1431 #endif 1432 proc_create_single_data("victim_bits", 0444, sbi->s_proc, 1433 victim_bits_seq_show, sb); 1434 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc, 1435 discard_plist_seq_show, sb); 1436 } 1437 return 0; 1438 put_feature_list_kobj: 1439 kobject_put(&sbi->s_feature_list_kobj); 1440 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1441 put_stat_kobj: 1442 kobject_put(&sbi->s_stat_kobj); 1443 wait_for_completion(&sbi->s_stat_kobj_unregister); 1444 put_sb_kobj: 1445 kobject_put(&sbi->s_kobj); 1446 wait_for_completion(&sbi->s_kobj_unregister); 1447 return err; 1448 } 1449 1450 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 1451 { 1452 if (sbi->s_proc) { 1453 #ifdef CONFIG_F2FS_IOSTAT 1454 remove_proc_entry("iostat_info", sbi->s_proc); 1455 #endif 1456 remove_proc_entry("segment_info", sbi->s_proc); 1457 remove_proc_entry("segment_bits", sbi->s_proc); 1458 remove_proc_entry("victim_bits", sbi->s_proc); 1459 remove_proc_entry("discard_plist_info", sbi->s_proc); 1460 remove_proc_entry(sbi->sb->s_id, f2fs_proc_root); 1461 } 1462 1463 kobject_del(&sbi->s_stat_kobj); 1464 kobject_put(&sbi->s_stat_kobj); 1465 wait_for_completion(&sbi->s_stat_kobj_unregister); 1466 kobject_del(&sbi->s_feature_list_kobj); 1467 kobject_put(&sbi->s_feature_list_kobj); 1468 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1469 1470 kobject_del(&sbi->s_kobj); 1471 kobject_put(&sbi->s_kobj); 1472 wait_for_completion(&sbi->s_kobj_unregister); 1473 } 1474