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 struct f2fs_base_attr { 65 struct attribute attr; 66 ssize_t (*show)(struct f2fs_base_attr *a, char *buf); 67 ssize_t (*store)(struct f2fs_base_attr *a, const char *buf, size_t len); 68 }; 69 70 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 71 struct f2fs_sb_info *sbi, char *buf); 72 73 static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) 74 { 75 if (struct_type == GC_THREAD) 76 return (unsigned char *)sbi->gc_thread; 77 else if (struct_type == SM_INFO) 78 return (unsigned char *)SM_I(sbi); 79 else if (struct_type == DCC_INFO) 80 return (unsigned char *)SM_I(sbi)->dcc_info; 81 else if (struct_type == NM_INFO) 82 return (unsigned char *)NM_I(sbi); 83 else if (struct_type == F2FS_SBI || struct_type == RESERVED_BLOCKS) 84 return (unsigned char *)sbi; 85 #ifdef CONFIG_F2FS_FAULT_INJECTION 86 else if (struct_type == FAULT_INFO_RATE || 87 struct_type == FAULT_INFO_TYPE) 88 return (unsigned char *)&F2FS_OPTION(sbi).fault_info; 89 #endif 90 #ifdef CONFIG_F2FS_STAT_FS 91 else if (struct_type == STAT_INFO) 92 return (unsigned char *)F2FS_STAT(sbi); 93 #endif 94 else if (struct_type == CPRC_INFO) 95 return (unsigned char *)&sbi->cprc_info; 96 else if (struct_type == ATGC_INFO) 97 return (unsigned char *)&sbi->am; 98 return NULL; 99 } 100 101 static ssize_t dirty_segments_show(struct f2fs_attr *a, 102 struct f2fs_sb_info *sbi, char *buf) 103 { 104 return sysfs_emit(buf, "%llu\n", 105 (unsigned long long)(dirty_segments(sbi))); 106 } 107 108 static ssize_t free_segments_show(struct f2fs_attr *a, 109 struct f2fs_sb_info *sbi, char *buf) 110 { 111 return sysfs_emit(buf, "%llu\n", 112 (unsigned long long)(free_segments(sbi))); 113 } 114 115 static ssize_t ovp_segments_show(struct f2fs_attr *a, 116 struct f2fs_sb_info *sbi, char *buf) 117 { 118 return sysfs_emit(buf, "%llu\n", 119 (unsigned long long)(overprovision_segments(sbi))); 120 } 121 122 static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, 123 struct f2fs_sb_info *sbi, char *buf) 124 { 125 return sysfs_emit(buf, "%llu\n", 126 (unsigned long long)(sbi->kbytes_written + 127 ((f2fs_get_sectors_written(sbi) - 128 sbi->sectors_written_start) >> 1))); 129 } 130 131 static ssize_t sb_status_show(struct f2fs_attr *a, 132 struct f2fs_sb_info *sbi, char *buf) 133 { 134 return sysfs_emit(buf, "%lx\n", sbi->s_flag); 135 } 136 137 static ssize_t cp_status_show(struct f2fs_attr *a, 138 struct f2fs_sb_info *sbi, char *buf) 139 { 140 return sysfs_emit(buf, "%x\n", le32_to_cpu(F2FS_CKPT(sbi)->ckpt_flags)); 141 } 142 143 static ssize_t pending_discard_show(struct f2fs_attr *a, 144 struct f2fs_sb_info *sbi, char *buf) 145 { 146 if (!SM_I(sbi)->dcc_info) 147 return -EINVAL; 148 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read( 149 &SM_I(sbi)->dcc_info->discard_cmd_cnt)); 150 } 151 152 static ssize_t issued_discard_show(struct f2fs_attr *a, 153 struct f2fs_sb_info *sbi, char *buf) 154 { 155 if (!SM_I(sbi)->dcc_info) 156 return -EINVAL; 157 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read( 158 &SM_I(sbi)->dcc_info->issued_discard)); 159 } 160 161 static ssize_t queued_discard_show(struct f2fs_attr *a, 162 struct f2fs_sb_info *sbi, char *buf) 163 { 164 if (!SM_I(sbi)->dcc_info) 165 return -EINVAL; 166 return sysfs_emit(buf, "%llu\n", (unsigned long long)atomic_read( 167 &SM_I(sbi)->dcc_info->queued_discard)); 168 } 169 170 static ssize_t undiscard_blks_show(struct f2fs_attr *a, 171 struct f2fs_sb_info *sbi, char *buf) 172 { 173 if (!SM_I(sbi)->dcc_info) 174 return -EINVAL; 175 return sysfs_emit(buf, "%u\n", 176 SM_I(sbi)->dcc_info->undiscard_blks); 177 } 178 179 static ssize_t atgc_enabled_show(struct f2fs_attr *a, 180 struct f2fs_sb_info *sbi, char *buf) 181 { 182 return sysfs_emit(buf, "%d\n", sbi->am.atgc_enabled ? 1 : 0); 183 } 184 185 static ssize_t gc_mode_show(struct f2fs_attr *a, 186 struct f2fs_sb_info *sbi, char *buf) 187 { 188 return sysfs_emit(buf, "%s\n", gc_mode_names[sbi->gc_mode]); 189 } 190 191 static ssize_t features_show(struct f2fs_attr *a, 192 struct f2fs_sb_info *sbi, char *buf) 193 { 194 int len = 0; 195 196 if (f2fs_sb_has_encrypt(sbi)) 197 len += sysfs_emit_at(buf, len, "%s", 198 "encryption"); 199 if (f2fs_sb_has_blkzoned(sbi)) 200 len += sysfs_emit_at(buf, len, "%s%s", 201 len ? ", " : "", "blkzoned"); 202 if (f2fs_sb_has_extra_attr(sbi)) 203 len += sysfs_emit_at(buf, len, "%s%s", 204 len ? ", " : "", "extra_attr"); 205 if (f2fs_sb_has_project_quota(sbi)) 206 len += sysfs_emit_at(buf, len, "%s%s", 207 len ? ", " : "", "projquota"); 208 if (f2fs_sb_has_inode_chksum(sbi)) 209 len += sysfs_emit_at(buf, len, "%s%s", 210 len ? ", " : "", "inode_checksum"); 211 if (f2fs_sb_has_flexible_inline_xattr(sbi)) 212 len += sysfs_emit_at(buf, len, "%s%s", 213 len ? ", " : "", "flexible_inline_xattr"); 214 if (f2fs_sb_has_quota_ino(sbi)) 215 len += sysfs_emit_at(buf, len, "%s%s", 216 len ? ", " : "", "quota_ino"); 217 if (f2fs_sb_has_inode_crtime(sbi)) 218 len += sysfs_emit_at(buf, len, "%s%s", 219 len ? ", " : "", "inode_crtime"); 220 if (f2fs_sb_has_lost_found(sbi)) 221 len += sysfs_emit_at(buf, len, "%s%s", 222 len ? ", " : "", "lost_found"); 223 if (f2fs_sb_has_verity(sbi)) 224 len += sysfs_emit_at(buf, len, "%s%s", 225 len ? ", " : "", "verity"); 226 if (f2fs_sb_has_sb_chksum(sbi)) 227 len += sysfs_emit_at(buf, len, "%s%s", 228 len ? ", " : "", "sb_checksum"); 229 if (f2fs_sb_has_casefold(sbi)) 230 len += sysfs_emit_at(buf, len, "%s%s", 231 len ? ", " : "", "casefold"); 232 if (f2fs_sb_has_readonly(sbi)) 233 len += sysfs_emit_at(buf, len, "%s%s", 234 len ? ", " : "", "readonly"); 235 if (f2fs_sb_has_compression(sbi)) 236 len += sysfs_emit_at(buf, len, "%s%s", 237 len ? ", " : "", "compression"); 238 len += sysfs_emit_at(buf, len, "%s%s", 239 len ? ", " : "", "pin_file"); 240 len += sysfs_emit_at(buf, len, "\n"); 241 return len; 242 } 243 244 static ssize_t current_reserved_blocks_show(struct f2fs_attr *a, 245 struct f2fs_sb_info *sbi, char *buf) 246 { 247 return sysfs_emit(buf, "%u\n", sbi->current_reserved_blocks); 248 } 249 250 static ssize_t unusable_show(struct f2fs_attr *a, 251 struct f2fs_sb_info *sbi, char *buf) 252 { 253 block_t unusable; 254 255 if (test_opt(sbi, DISABLE_CHECKPOINT)) 256 unusable = sbi->unusable_block_count; 257 else 258 unusable = f2fs_get_unusable_blocks(sbi); 259 return sysfs_emit(buf, "%llu\n", (unsigned long long)unusable); 260 } 261 262 static ssize_t encoding_show(struct f2fs_attr *a, 263 struct f2fs_sb_info *sbi, char *buf) 264 { 265 #if IS_ENABLED(CONFIG_UNICODE) 266 struct super_block *sb = sbi->sb; 267 268 if (f2fs_sb_has_casefold(sbi)) 269 return sysfs_emit(buf, "UTF-8 (%d.%d.%d)\n", 270 (sb->s_encoding->version >> 16) & 0xff, 271 (sb->s_encoding->version >> 8) & 0xff, 272 sb->s_encoding->version & 0xff); 273 #endif 274 return sysfs_emit(buf, "(none)\n"); 275 } 276 277 static ssize_t mounted_time_sec_show(struct f2fs_attr *a, 278 struct f2fs_sb_info *sbi, char *buf) 279 { 280 return sysfs_emit(buf, "%llu\n", SIT_I(sbi)->mounted_time); 281 } 282 283 #ifdef CONFIG_F2FS_STAT_FS 284 static ssize_t moved_blocks_foreground_show(struct f2fs_attr *a, 285 struct f2fs_sb_info *sbi, char *buf) 286 { 287 struct f2fs_stat_info *si = F2FS_STAT(sbi); 288 289 return sysfs_emit(buf, "%llu\n", 290 (unsigned long long)(si->tot_blks - 291 (si->bg_data_blks + si->bg_node_blks))); 292 } 293 294 static ssize_t moved_blocks_background_show(struct f2fs_attr *a, 295 struct f2fs_sb_info *sbi, char *buf) 296 { 297 struct f2fs_stat_info *si = F2FS_STAT(sbi); 298 299 return sysfs_emit(buf, "%llu\n", 300 (unsigned long long)(si->bg_data_blks + si->bg_node_blks)); 301 } 302 303 static ssize_t avg_vblocks_show(struct f2fs_attr *a, 304 struct f2fs_sb_info *sbi, char *buf) 305 { 306 struct f2fs_stat_info *si = F2FS_STAT(sbi); 307 308 si->dirty_count = dirty_segments(sbi); 309 f2fs_update_sit_info(sbi); 310 return sysfs_emit(buf, "%llu\n", (unsigned long long)(si->avg_vblocks)); 311 } 312 #endif 313 314 static ssize_t main_blkaddr_show(struct f2fs_attr *a, 315 struct f2fs_sb_info *sbi, char *buf) 316 { 317 return sysfs_emit(buf, "%llu\n", 318 (unsigned long long)MAIN_BLKADDR(sbi)); 319 } 320 321 static ssize_t f2fs_sbi_show(struct f2fs_attr *a, 322 struct f2fs_sb_info *sbi, char *buf) 323 { 324 unsigned char *ptr = NULL; 325 unsigned int *ui; 326 327 ptr = __struct_ptr(sbi, a->struct_type); 328 if (!ptr) 329 return -EINVAL; 330 331 if (!strcmp(a->attr.name, "extension_list")) { 332 __u8 (*extlist)[F2FS_EXTENSION_LEN] = 333 sbi->raw_super->extension_list; 334 int cold_count = le32_to_cpu(sbi->raw_super->extension_count); 335 int hot_count = sbi->raw_super->hot_ext_count; 336 int len = 0, i; 337 338 len += sysfs_emit_at(buf, len, "cold file extension:\n"); 339 for (i = 0; i < cold_count; i++) 340 len += sysfs_emit_at(buf, len, "%s\n", extlist[i]); 341 342 len += sysfs_emit_at(buf, len, "hot file extension:\n"); 343 for (i = cold_count; i < cold_count + hot_count; i++) 344 len += sysfs_emit_at(buf, len, "%s\n", extlist[i]); 345 346 return len; 347 } 348 349 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { 350 struct ckpt_req_control *cprc = &sbi->cprc_info; 351 int class = IOPRIO_PRIO_CLASS(cprc->ckpt_thread_ioprio); 352 int level = IOPRIO_PRIO_LEVEL(cprc->ckpt_thread_ioprio); 353 354 if (class != IOPRIO_CLASS_RT && class != IOPRIO_CLASS_BE) 355 return -EINVAL; 356 357 return sysfs_emit(buf, "%s,%d\n", 358 class == IOPRIO_CLASS_RT ? "rt" : "be", level); 359 } 360 361 #ifdef CONFIG_F2FS_FS_COMPRESSION 362 if (!strcmp(a->attr.name, "compr_written_block")) 363 return sysfs_emit(buf, "%llu\n", sbi->compr_written_block); 364 365 if (!strcmp(a->attr.name, "compr_saved_block")) 366 return sysfs_emit(buf, "%llu\n", sbi->compr_saved_block); 367 368 if (!strcmp(a->attr.name, "compr_new_inode")) 369 return sysfs_emit(buf, "%u\n", sbi->compr_new_inode); 370 #endif 371 372 if (!strcmp(a->attr.name, "gc_segment_mode")) 373 return sysfs_emit(buf, "%u\n", sbi->gc_segment_mode); 374 375 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 376 return sysfs_emit(buf, "%u\n", 377 sbi->gc_reclaimed_segs[sbi->gc_segment_mode]); 378 } 379 380 if (!strcmp(a->attr.name, "current_atomic_write")) { 381 s64 current_write = atomic64_read(&sbi->current_atomic_write); 382 383 return sysfs_emit(buf, "%lld\n", current_write); 384 } 385 386 if (!strcmp(a->attr.name, "peak_atomic_write")) 387 return sysfs_emit(buf, "%lld\n", sbi->peak_atomic_write); 388 389 if (!strcmp(a->attr.name, "committed_atomic_block")) 390 return sysfs_emit(buf, "%llu\n", sbi->committed_atomic_block); 391 392 if (!strcmp(a->attr.name, "revoked_atomic_block")) 393 return sysfs_emit(buf, "%llu\n", sbi->revoked_atomic_block); 394 395 #ifdef CONFIG_F2FS_STAT_FS 396 if (!strcmp(a->attr.name, "cp_foreground_calls")) 397 return sysfs_emit(buf, "%d\n", 398 atomic_read(&sbi->cp_call_count[TOTAL_CALL]) - 399 atomic_read(&sbi->cp_call_count[BACKGROUND])); 400 if (!strcmp(a->attr.name, "cp_background_calls")) 401 return sysfs_emit(buf, "%d\n", 402 atomic_read(&sbi->cp_call_count[BACKGROUND])); 403 #endif 404 405 ui = (unsigned int *)(ptr + a->offset); 406 407 return sysfs_emit(buf, "%u\n", *ui); 408 } 409 410 static ssize_t __sbi_store(struct f2fs_attr *a, 411 struct f2fs_sb_info *sbi, 412 const char *buf, size_t count) 413 { 414 unsigned char *ptr; 415 unsigned long t; 416 unsigned int *ui; 417 ssize_t ret; 418 419 ptr = __struct_ptr(sbi, a->struct_type); 420 if (!ptr) 421 return -EINVAL; 422 423 if (!strcmp(a->attr.name, "extension_list")) { 424 const char *name = strim((char *)buf); 425 bool set = true, hot; 426 427 if (!strncmp(name, "[h]", 3)) 428 hot = true; 429 else if (!strncmp(name, "[c]", 3)) 430 hot = false; 431 else 432 return -EINVAL; 433 434 name += 3; 435 436 if (*name == '!') { 437 name++; 438 set = false; 439 } 440 441 if (!strlen(name) || strlen(name) >= F2FS_EXTENSION_LEN) 442 return -EINVAL; 443 444 f2fs_down_write(&sbi->sb_lock); 445 446 ret = f2fs_update_extension_list(sbi, name, hot, set); 447 if (ret) 448 goto out; 449 450 ret = f2fs_commit_super(sbi, false); 451 if (ret) 452 f2fs_update_extension_list(sbi, name, hot, !set); 453 out: 454 f2fs_up_write(&sbi->sb_lock); 455 return ret ? ret : count; 456 } 457 458 if (!strcmp(a->attr.name, "ckpt_thread_ioprio")) { 459 const char *name = strim((char *)buf); 460 struct ckpt_req_control *cprc = &sbi->cprc_info; 461 int class; 462 long level; 463 int ret; 464 465 if (!strncmp(name, "rt,", 3)) 466 class = IOPRIO_CLASS_RT; 467 else if (!strncmp(name, "be,", 3)) 468 class = IOPRIO_CLASS_BE; 469 else 470 return -EINVAL; 471 472 name += 3; 473 ret = kstrtol(name, 10, &level); 474 if (ret) 475 return ret; 476 if (level >= IOPRIO_NR_LEVELS || level < 0) 477 return -EINVAL; 478 479 cprc->ckpt_thread_ioprio = IOPRIO_PRIO_VALUE(class, level); 480 if (test_opt(sbi, MERGE_CHECKPOINT)) { 481 ret = set_task_ioprio(cprc->f2fs_issue_ckpt, 482 cprc->ckpt_thread_ioprio); 483 if (ret) 484 return ret; 485 } 486 487 return count; 488 } 489 490 ui = (unsigned int *)(ptr + a->offset); 491 492 ret = kstrtoul(skip_spaces(buf), 0, &t); 493 if (ret < 0) 494 return ret; 495 #ifdef CONFIG_F2FS_FAULT_INJECTION 496 if (a->struct_type == FAULT_INFO_TYPE) { 497 if (f2fs_build_fault_attr(sbi, 0, t)) 498 return -EINVAL; 499 return count; 500 } 501 if (a->struct_type == FAULT_INFO_RATE) { 502 if (f2fs_build_fault_attr(sbi, t, 0)) 503 return -EINVAL; 504 return count; 505 } 506 #endif 507 if (a->struct_type == RESERVED_BLOCKS) { 508 spin_lock(&sbi->stat_lock); 509 if (t > (unsigned long)(sbi->user_block_count - 510 F2FS_OPTION(sbi).root_reserved_blocks)) { 511 spin_unlock(&sbi->stat_lock); 512 return -EINVAL; 513 } 514 *ui = t; 515 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 516 sbi->user_block_count - valid_user_blocks(sbi)); 517 spin_unlock(&sbi->stat_lock); 518 return count; 519 } 520 521 if (!strcmp(a->attr.name, "discard_io_aware_gran")) { 522 if (t > MAX_PLIST_NUM) 523 return -EINVAL; 524 if (!f2fs_block_unit_discard(sbi)) 525 return -EINVAL; 526 if (t == *ui) 527 return count; 528 *ui = t; 529 return count; 530 } 531 532 if (!strcmp(a->attr.name, "discard_granularity")) { 533 if (t == 0 || t > MAX_PLIST_NUM) 534 return -EINVAL; 535 if (!f2fs_block_unit_discard(sbi)) 536 return -EINVAL; 537 if (t == *ui) 538 return count; 539 *ui = t; 540 return count; 541 } 542 543 if (!strcmp(a->attr.name, "max_ordered_discard")) { 544 if (t == 0 || t > MAX_PLIST_NUM) 545 return -EINVAL; 546 if (!f2fs_block_unit_discard(sbi)) 547 return -EINVAL; 548 *ui = t; 549 return count; 550 } 551 552 if (!strcmp(a->attr.name, "discard_urgent_util")) { 553 if (t > 100) 554 return -EINVAL; 555 *ui = t; 556 return count; 557 } 558 559 if (!strcmp(a->attr.name, "discard_io_aware")) { 560 if (t >= DPOLICY_IO_AWARE_MAX) 561 return -EINVAL; 562 *ui = t; 563 return count; 564 } 565 566 if (!strcmp(a->attr.name, "migration_granularity")) { 567 if (t == 0 || t > SEGS_PER_SEC(sbi)) 568 return -EINVAL; 569 } 570 571 if (!strcmp(a->attr.name, "migration_window_granularity")) { 572 if (t == 0 || t > SEGS_PER_SEC(sbi)) 573 return -EINVAL; 574 } 575 576 if (!strcmp(a->attr.name, "gc_urgent")) { 577 if (t == 0) { 578 sbi->gc_mode = GC_NORMAL; 579 } else if (t == 1) { 580 sbi->gc_mode = GC_URGENT_HIGH; 581 if (sbi->gc_thread) { 582 sbi->gc_thread->gc_wake = true; 583 wake_up_interruptible_all( 584 &sbi->gc_thread->gc_wait_queue_head); 585 wake_up_discard_thread(sbi, true); 586 } 587 } else if (t == 2) { 588 sbi->gc_mode = GC_URGENT_LOW; 589 } else if (t == 3) { 590 sbi->gc_mode = GC_URGENT_MID; 591 if (sbi->gc_thread) { 592 sbi->gc_thread->gc_wake = true; 593 wake_up_interruptible_all( 594 &sbi->gc_thread->gc_wait_queue_head); 595 } 596 } else { 597 return -EINVAL; 598 } 599 return count; 600 } 601 if (!strcmp(a->attr.name, "gc_idle")) { 602 if (t == GC_IDLE_CB) { 603 sbi->gc_mode = GC_IDLE_CB; 604 } else if (t == GC_IDLE_GREEDY) { 605 sbi->gc_mode = GC_IDLE_GREEDY; 606 } else if (t == GC_IDLE_AT) { 607 if (!sbi->am.atgc_enabled) 608 return -EINVAL; 609 sbi->gc_mode = GC_IDLE_AT; 610 } else { 611 sbi->gc_mode = GC_NORMAL; 612 } 613 return count; 614 } 615 616 if (!strcmp(a->attr.name, "gc_remaining_trials")) { 617 spin_lock(&sbi->gc_remaining_trials_lock); 618 sbi->gc_remaining_trials = t; 619 spin_unlock(&sbi->gc_remaining_trials_lock); 620 621 return count; 622 } 623 624 #ifdef CONFIG_F2FS_IOSTAT 625 if (!strcmp(a->attr.name, "iostat_enable")) { 626 sbi->iostat_enable = !!t; 627 if (!sbi->iostat_enable) 628 f2fs_reset_iostat(sbi); 629 return count; 630 } 631 632 if (!strcmp(a->attr.name, "iostat_period_ms")) { 633 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS) 634 return -EINVAL; 635 spin_lock_irq(&sbi->iostat_lock); 636 sbi->iostat_period_ms = (unsigned int)t; 637 spin_unlock_irq(&sbi->iostat_lock); 638 return count; 639 } 640 #endif 641 642 #ifdef CONFIG_BLK_DEV_ZONED 643 if (!strcmp(a->attr.name, "blkzone_alloc_policy")) { 644 if (t < BLKZONE_ALLOC_PRIOR_SEQ || t > BLKZONE_ALLOC_PRIOR_CONV) 645 return -EINVAL; 646 sbi->blkzone_alloc_policy = t; 647 return count; 648 } 649 #endif 650 651 #ifdef CONFIG_F2FS_FS_COMPRESSION 652 if (!strcmp(a->attr.name, "compr_written_block") || 653 !strcmp(a->attr.name, "compr_saved_block")) { 654 if (t != 0) 655 return -EINVAL; 656 sbi->compr_written_block = 0; 657 sbi->compr_saved_block = 0; 658 return count; 659 } 660 661 if (!strcmp(a->attr.name, "compr_new_inode")) { 662 if (t != 0) 663 return -EINVAL; 664 sbi->compr_new_inode = 0; 665 return count; 666 } 667 668 if (!strcmp(a->attr.name, "compress_percent")) { 669 if (t == 0 || t > 100) 670 return -EINVAL; 671 *ui = t; 672 return count; 673 } 674 675 if (!strcmp(a->attr.name, "compress_watermark")) { 676 if (t == 0 || t > 100) 677 return -EINVAL; 678 *ui = t; 679 return count; 680 } 681 #endif 682 683 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) { 684 if (t > 100) 685 return -EINVAL; 686 sbi->am.candidate_ratio = t; 687 return count; 688 } 689 690 if (!strcmp(a->attr.name, "atgc_age_weight")) { 691 if (t > 100) 692 return -EINVAL; 693 sbi->am.age_weight = t; 694 return count; 695 } 696 697 if (!strcmp(a->attr.name, "gc_segment_mode")) { 698 if (t < MAX_GC_MODE) 699 sbi->gc_segment_mode = t; 700 else 701 return -EINVAL; 702 return count; 703 } 704 705 if (!strcmp(a->attr.name, "gc_pin_file_threshold")) { 706 if (t > MAX_GC_FAILED_PINNED_FILES) 707 return -EINVAL; 708 sbi->gc_pin_file_threshold = t; 709 return count; 710 } 711 712 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 713 if (t != 0) 714 return -EINVAL; 715 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0; 716 return count; 717 } 718 719 if (!strcmp(a->attr.name, "seq_file_ra_mul")) { 720 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL) 721 sbi->seq_file_ra_mul = t; 722 else 723 return -EINVAL; 724 return count; 725 } 726 727 if (!strcmp(a->attr.name, "max_fragment_chunk")) { 728 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 729 sbi->max_fragment_chunk = t; 730 else 731 return -EINVAL; 732 return count; 733 } 734 735 if (!strcmp(a->attr.name, "max_fragment_hole")) { 736 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 737 sbi->max_fragment_hole = t; 738 else 739 return -EINVAL; 740 return count; 741 } 742 743 if (!strcmp(a->attr.name, "peak_atomic_write")) { 744 if (t != 0) 745 return -EINVAL; 746 sbi->peak_atomic_write = 0; 747 return count; 748 } 749 750 if (!strcmp(a->attr.name, "committed_atomic_block")) { 751 if (t != 0) 752 return -EINVAL; 753 sbi->committed_atomic_block = 0; 754 return count; 755 } 756 757 if (!strcmp(a->attr.name, "revoked_atomic_block")) { 758 if (t != 0) 759 return -EINVAL; 760 sbi->revoked_atomic_block = 0; 761 return count; 762 } 763 764 if (!strcmp(a->attr.name, "readdir_ra")) { 765 sbi->readdir_ra = !!t; 766 return count; 767 } 768 769 if (!strcmp(a->attr.name, "hot_data_age_threshold")) { 770 if (t == 0 || t >= sbi->warm_data_age_threshold) 771 return -EINVAL; 772 if (t == *ui) 773 return count; 774 *ui = (unsigned int)t; 775 return count; 776 } 777 778 if (!strcmp(a->attr.name, "warm_data_age_threshold")) { 779 if (t <= sbi->hot_data_age_threshold) 780 return -EINVAL; 781 if (t == *ui) 782 return count; 783 *ui = (unsigned int)t; 784 return count; 785 } 786 787 if (!strcmp(a->attr.name, "last_age_weight")) { 788 if (t > 100) 789 return -EINVAL; 790 if (t == *ui) 791 return count; 792 *ui = (unsigned int)t; 793 return count; 794 } 795 796 if (!strcmp(a->attr.name, "max_read_extent_count")) { 797 if (t > UINT_MAX) 798 return -EINVAL; 799 *ui = (unsigned int)t; 800 return count; 801 } 802 803 if (!strcmp(a->attr.name, "ipu_policy")) { 804 if (t >= BIT(F2FS_IPU_MAX)) 805 return -EINVAL; 806 /* allow F2FS_IPU_NOCACHE only for IPU in the pinned file */ 807 if (f2fs_lfs_mode(sbi) && (t & ~BIT(F2FS_IPU_NOCACHE))) 808 return -EINVAL; 809 SM_I(sbi)->ipu_policy = (unsigned int)t; 810 return count; 811 } 812 813 if (!strcmp(a->attr.name, "dir_level")) { 814 if (t > MAX_DIR_HASH_DEPTH) 815 return -EINVAL; 816 sbi->dir_level = t; 817 return count; 818 } 819 820 *ui = (unsigned int)t; 821 822 return count; 823 } 824 825 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 826 struct f2fs_sb_info *sbi, 827 const char *buf, size_t count) 828 { 829 ssize_t ret; 830 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 831 a->struct_type == GC_THREAD); 832 833 if (gc_entry) { 834 if (!down_read_trylock(&sbi->sb->s_umount)) 835 return -EAGAIN; 836 } 837 ret = __sbi_store(a, sbi, buf, count); 838 if (gc_entry) 839 up_read(&sbi->sb->s_umount); 840 841 return ret; 842 } 843 844 static ssize_t f2fs_attr_show(struct kobject *kobj, 845 struct attribute *attr, char *buf) 846 { 847 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 848 s_kobj); 849 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 850 851 return a->show ? a->show(a, sbi, buf) : 0; 852 } 853 854 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 855 const char *buf, size_t len) 856 { 857 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 858 s_kobj); 859 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 860 861 return a->store ? a->store(a, sbi, buf, len) : 0; 862 } 863 864 static void f2fs_sb_release(struct kobject *kobj) 865 { 866 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 867 s_kobj); 868 complete(&sbi->s_kobj_unregister); 869 } 870 871 static ssize_t f2fs_base_attr_show(struct kobject *kobj, 872 struct attribute *attr, char *buf) 873 { 874 struct f2fs_base_attr *a = container_of(attr, 875 struct f2fs_base_attr, attr); 876 877 return a->show ? a->show(a, buf) : 0; 878 } 879 880 static ssize_t f2fs_base_attr_store(struct kobject *kobj, 881 struct attribute *attr, 882 const char *buf, size_t len) 883 { 884 struct f2fs_base_attr *a = container_of(attr, 885 struct f2fs_base_attr, attr); 886 887 return a->store ? a->store(a, buf, len) : 0; 888 } 889 890 /* 891 * Note that there are three feature list entries: 892 * 1) /sys/fs/f2fs/features 893 * : shows runtime features supported by in-kernel f2fs along with Kconfig. 894 * - ref. F2FS_FEATURE_RO_ATTR() 895 * 896 * 2) /sys/fs/f2fs/$s_id/features <deprecated> 897 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This 898 * won't add new feature anymore, and thus, users should check entries in 3) 899 * instead of this 2). 900 * 901 * 3) /sys/fs/f2fs/$s_id/feature_list 902 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows 903 * sysfs entry rule where each entry should expose single value. 904 * This list covers old feature list provided by 2) and beyond. Therefore, 905 * please add new on-disk feature in this list only. 906 * - ref. F2FS_SB_FEATURE_RO_ATTR() 907 */ 908 static ssize_t f2fs_feature_show(struct f2fs_base_attr *a, char *buf) 909 { 910 return sysfs_emit(buf, "supported\n"); 911 } 912 913 #define F2FS_FEATURE_RO_ATTR(_name) \ 914 static struct f2fs_base_attr f2fs_base_attr_##_name = { \ 915 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 916 .show = f2fs_feature_show, \ 917 } 918 919 static ssize_t f2fs_tune_show(struct f2fs_base_attr *a, char *buf) 920 { 921 unsigned int res = 0; 922 923 if (!strcmp(a->attr.name, "reclaim_caches_kb")) 924 res = f2fs_donate_files(); 925 926 return sysfs_emit(buf, "%u\n", res); 927 } 928 929 static ssize_t f2fs_tune_store(struct f2fs_base_attr *a, 930 const char *buf, size_t count) 931 { 932 unsigned long t; 933 int ret; 934 935 ret = kstrtoul(skip_spaces(buf), 0, &t); 936 if (ret) 937 return ret; 938 939 if (!strcmp(a->attr.name, "reclaim_caches_kb")) 940 f2fs_reclaim_caches(t); 941 942 return count; 943 } 944 945 #define F2FS_TUNE_RW_ATTR(_name) \ 946 static struct f2fs_base_attr f2fs_base_attr_##_name = { \ 947 .attr = {.name = __stringify(_name), .mode = 0644 }, \ 948 .show = f2fs_tune_show, \ 949 .store = f2fs_tune_store, \ 950 } 951 952 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a, 953 struct f2fs_sb_info *sbi, char *buf) 954 { 955 if (F2FS_HAS_FEATURE(sbi, a->id)) 956 return sysfs_emit(buf, "supported\n"); 957 return sysfs_emit(buf, "unsupported\n"); 958 } 959 960 #define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \ 961 static struct f2fs_attr f2fs_attr_sb_##_name = { \ 962 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 963 .show = f2fs_sb_feature_show, \ 964 .id = F2FS_FEATURE_##_feat, \ 965 } 966 967 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 968 static struct f2fs_attr f2fs_attr_##_name = { \ 969 .attr = {.name = __stringify(_name), .mode = _mode }, \ 970 .show = _show, \ 971 .store = _store, \ 972 .struct_type = _struct_type, \ 973 .offset = _offset \ 974 } 975 976 #define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \ 977 F2FS_ATTR_OFFSET(struct_type, name, 0444, \ 978 f2fs_sbi_show, NULL, \ 979 offsetof(struct struct_name, elname)) 980 981 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 982 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 983 f2fs_sbi_show, f2fs_sbi_store, \ 984 offsetof(struct struct_name, elname)) 985 986 #define F2FS_GENERAL_RO_ATTR(name) \ 987 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 988 989 #ifdef CONFIG_F2FS_STAT_FS 990 #define STAT_INFO_RO_ATTR(name, elname) \ 991 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname) 992 #endif 993 994 #define GC_THREAD_RW_ATTR(name, elname) \ 995 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname) 996 997 #define SM_INFO_RW_ATTR(name, elname) \ 998 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname) 999 1000 #define SM_INFO_GENERAL_RW_ATTR(elname) \ 1001 SM_INFO_RW_ATTR(elname, elname) 1002 1003 #define DCC_INFO_RW_ATTR(name, elname) \ 1004 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname) 1005 1006 #define DCC_INFO_GENERAL_RW_ATTR(elname) \ 1007 DCC_INFO_RW_ATTR(elname, elname) 1008 1009 #define NM_INFO_RW_ATTR(name, elname) \ 1010 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname) 1011 1012 #define NM_INFO_GENERAL_RW_ATTR(elname) \ 1013 NM_INFO_RW_ATTR(elname, elname) 1014 1015 #define F2FS_SBI_RW_ATTR(name, elname) \ 1016 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname) 1017 1018 #define F2FS_SBI_GENERAL_RW_ATTR(elname) \ 1019 F2FS_SBI_RW_ATTR(elname, elname) 1020 1021 #define F2FS_SBI_GENERAL_RO_ATTR(elname) \ 1022 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname) 1023 1024 #ifdef CONFIG_F2FS_FAULT_INJECTION 1025 #define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \ 1026 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname) 1027 #endif 1028 1029 #define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \ 1030 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname) 1031 1032 #define CPRC_INFO_GENERAL_RW_ATTR(elname) \ 1033 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname) 1034 1035 #define ATGC_INFO_RW_ATTR(name, elname) \ 1036 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname) 1037 1038 /* GC_THREAD ATTR */ 1039 GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time); 1040 GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time); 1041 GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time); 1042 GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time); 1043 GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent); 1044 GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent); 1045 GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio); 1046 1047 /* SM_INFO ATTR */ 1048 SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments); 1049 SM_INFO_GENERAL_RW_ATTR(ipu_policy); 1050 SM_INFO_GENERAL_RW_ATTR(min_ipu_util); 1051 SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks); 1052 SM_INFO_GENERAL_RW_ATTR(min_seq_blocks); 1053 SM_INFO_GENERAL_RW_ATTR(min_hot_blocks); 1054 SM_INFO_GENERAL_RW_ATTR(min_ssr_sections); 1055 SM_INFO_GENERAL_RW_ATTR(reserved_segments); 1056 1057 /* DCC_INFO ATTR */ 1058 DCC_INFO_RW_ATTR(max_small_discards, max_discards); 1059 DCC_INFO_GENERAL_RW_ATTR(max_discard_request); 1060 DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time); 1061 DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time); 1062 DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time); 1063 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran); 1064 DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util); 1065 DCC_INFO_GENERAL_RW_ATTR(discard_granularity); 1066 DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard); 1067 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware); 1068 1069 /* NM_INFO ATTR */ 1070 NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks); 1071 NM_INFO_GENERAL_RW_ATTR(ram_thresh); 1072 NM_INFO_GENERAL_RW_ATTR(ra_nid_pages); 1073 NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio); 1074 1075 /* F2FS_SBI ATTR */ 1076 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 1077 F2FS_SBI_RW_ATTR(gc_idle, gc_mode); 1078 F2FS_SBI_RW_ATTR(gc_urgent, gc_mode); 1079 F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]); 1080 F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]); 1081 F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]); 1082 F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]); 1083 F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 1084 F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold); 1085 F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs); 1086 F2FS_SBI_GENERAL_RW_ATTR(max_victim_search); 1087 F2FS_SBI_GENERAL_RW_ATTR(migration_granularity); 1088 F2FS_SBI_GENERAL_RW_ATTR(migration_window_granularity); 1089 F2FS_SBI_GENERAL_RW_ATTR(dir_level); 1090 #ifdef CONFIG_F2FS_IOSTAT 1091 F2FS_SBI_GENERAL_RW_ATTR(iostat_enable); 1092 F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms); 1093 #endif 1094 F2FS_SBI_GENERAL_RW_ATTR(readdir_ra); 1095 F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes); 1096 F2FS_SBI_GENERAL_RW_ATTR(data_io_flag); 1097 F2FS_SBI_GENERAL_RW_ATTR(node_io_flag); 1098 F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials); 1099 F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul); 1100 F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode); 1101 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk); 1102 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole); 1103 #ifdef CONFIG_F2FS_FS_COMPRESSION 1104 F2FS_SBI_GENERAL_RW_ATTR(compr_written_block); 1105 F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block); 1106 F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode); 1107 F2FS_SBI_GENERAL_RW_ATTR(compress_percent); 1108 F2FS_SBI_GENERAL_RW_ATTR(compress_watermark); 1109 #endif 1110 /* atomic write */ 1111 F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write); 1112 F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write); 1113 F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block); 1114 F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block); 1115 /* block age extent cache */ 1116 F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold); 1117 F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold); 1118 F2FS_SBI_GENERAL_RW_ATTR(last_age_weight); 1119 /* read extent cache */ 1120 F2FS_SBI_GENERAL_RW_ATTR(max_read_extent_count); 1121 #ifdef CONFIG_BLK_DEV_ZONED 1122 F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec); 1123 F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy); 1124 #endif 1125 F2FS_SBI_GENERAL_RW_ATTR(carve_out); 1126 1127 /* STAT_INFO ATTR */ 1128 #ifdef CONFIG_F2FS_STAT_FS 1129 STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]); 1130 STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]); 1131 STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]); 1132 STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]); 1133 #endif 1134 1135 /* FAULT_INFO ATTR */ 1136 #ifdef CONFIG_F2FS_FAULT_INJECTION 1137 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate); 1138 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type); 1139 #endif 1140 1141 /* RESERVED_BLOCKS ATTR */ 1142 RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks); 1143 1144 /* CPRC_INFO ATTR */ 1145 CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio); 1146 1147 /* ATGC_INFO ATTR */ 1148 ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio); 1149 ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count); 1150 ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight); 1151 ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold); 1152 1153 F2FS_GENERAL_RO_ATTR(dirty_segments); 1154 F2FS_GENERAL_RO_ATTR(free_segments); 1155 F2FS_GENERAL_RO_ATTR(ovp_segments); 1156 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 1157 F2FS_GENERAL_RO_ATTR(features); 1158 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 1159 F2FS_GENERAL_RO_ATTR(unusable); 1160 F2FS_GENERAL_RO_ATTR(encoding); 1161 F2FS_GENERAL_RO_ATTR(mounted_time_sec); 1162 F2FS_GENERAL_RO_ATTR(main_blkaddr); 1163 F2FS_GENERAL_RO_ATTR(pending_discard); 1164 F2FS_GENERAL_RO_ATTR(atgc_enabled); 1165 F2FS_GENERAL_RO_ATTR(gc_mode); 1166 #ifdef CONFIG_F2FS_STAT_FS 1167 F2FS_GENERAL_RO_ATTR(moved_blocks_background); 1168 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground); 1169 F2FS_GENERAL_RO_ATTR(avg_vblocks); 1170 #endif 1171 1172 #ifdef CONFIG_FS_ENCRYPTION 1173 F2FS_FEATURE_RO_ATTR(encryption); 1174 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2); 1175 #if IS_ENABLED(CONFIG_UNICODE) 1176 F2FS_FEATURE_RO_ATTR(encrypted_casefold); 1177 #endif 1178 #endif /* CONFIG_FS_ENCRYPTION */ 1179 #ifdef CONFIG_BLK_DEV_ZONED 1180 F2FS_FEATURE_RO_ATTR(block_zoned); 1181 #endif 1182 F2FS_FEATURE_RO_ATTR(atomic_write); 1183 F2FS_FEATURE_RO_ATTR(extra_attr); 1184 F2FS_FEATURE_RO_ATTR(project_quota); 1185 F2FS_FEATURE_RO_ATTR(inode_checksum); 1186 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr); 1187 F2FS_FEATURE_RO_ATTR(quota_ino); 1188 F2FS_FEATURE_RO_ATTR(inode_crtime); 1189 F2FS_FEATURE_RO_ATTR(lost_found); 1190 #ifdef CONFIG_FS_VERITY 1191 F2FS_FEATURE_RO_ATTR(verity); 1192 #endif 1193 F2FS_FEATURE_RO_ATTR(sb_checksum); 1194 #if IS_ENABLED(CONFIG_UNICODE) 1195 F2FS_FEATURE_RO_ATTR(casefold); 1196 #endif 1197 F2FS_FEATURE_RO_ATTR(readonly); 1198 #ifdef CONFIG_F2FS_FS_COMPRESSION 1199 F2FS_FEATURE_RO_ATTR(compression); 1200 #endif 1201 F2FS_FEATURE_RO_ATTR(pin_file); 1202 1203 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 1204 static struct attribute *f2fs_attrs[] = { 1205 ATTR_LIST(gc_urgent_sleep_time), 1206 ATTR_LIST(gc_min_sleep_time), 1207 ATTR_LIST(gc_max_sleep_time), 1208 ATTR_LIST(gc_no_gc_sleep_time), 1209 ATTR_LIST(gc_no_zoned_gc_percent), 1210 ATTR_LIST(gc_boost_zoned_gc_percent), 1211 ATTR_LIST(gc_valid_thresh_ratio), 1212 ATTR_LIST(gc_idle), 1213 ATTR_LIST(gc_urgent), 1214 ATTR_LIST(reclaim_segments), 1215 ATTR_LIST(main_blkaddr), 1216 ATTR_LIST(max_small_discards), 1217 ATTR_LIST(max_discard_request), 1218 ATTR_LIST(min_discard_issue_time), 1219 ATTR_LIST(mid_discard_issue_time), 1220 ATTR_LIST(max_discard_issue_time), 1221 ATTR_LIST(discard_io_aware_gran), 1222 ATTR_LIST(discard_urgent_util), 1223 ATTR_LIST(discard_granularity), 1224 ATTR_LIST(max_ordered_discard), 1225 ATTR_LIST(discard_io_aware), 1226 ATTR_LIST(pending_discard), 1227 ATTR_LIST(gc_mode), 1228 ATTR_LIST(ipu_policy), 1229 ATTR_LIST(min_ipu_util), 1230 ATTR_LIST(min_fsync_blocks), 1231 ATTR_LIST(min_seq_blocks), 1232 ATTR_LIST(min_hot_blocks), 1233 ATTR_LIST(min_ssr_sections), 1234 ATTR_LIST(reserved_segments), 1235 ATTR_LIST(max_victim_search), 1236 ATTR_LIST(migration_granularity), 1237 ATTR_LIST(migration_window_granularity), 1238 ATTR_LIST(dir_level), 1239 ATTR_LIST(ram_thresh), 1240 ATTR_LIST(ra_nid_pages), 1241 ATTR_LIST(dirty_nats_ratio), 1242 ATTR_LIST(max_roll_forward_node_blocks), 1243 ATTR_LIST(cp_interval), 1244 ATTR_LIST(idle_interval), 1245 ATTR_LIST(discard_idle_interval), 1246 ATTR_LIST(gc_idle_interval), 1247 ATTR_LIST(umount_discard_timeout), 1248 #ifdef CONFIG_F2FS_IOSTAT 1249 ATTR_LIST(iostat_enable), 1250 ATTR_LIST(iostat_period_ms), 1251 #endif 1252 ATTR_LIST(readdir_ra), 1253 ATTR_LIST(max_io_bytes), 1254 ATTR_LIST(gc_pin_file_thresh), 1255 ATTR_LIST(extension_list), 1256 #ifdef CONFIG_F2FS_FAULT_INJECTION 1257 ATTR_LIST(inject_rate), 1258 ATTR_LIST(inject_type), 1259 #endif 1260 ATTR_LIST(data_io_flag), 1261 ATTR_LIST(node_io_flag), 1262 ATTR_LIST(gc_remaining_trials), 1263 ATTR_LIST(ckpt_thread_ioprio), 1264 ATTR_LIST(dirty_segments), 1265 ATTR_LIST(free_segments), 1266 ATTR_LIST(ovp_segments), 1267 ATTR_LIST(unusable), 1268 ATTR_LIST(lifetime_write_kbytes), 1269 ATTR_LIST(features), 1270 ATTR_LIST(reserved_blocks), 1271 ATTR_LIST(current_reserved_blocks), 1272 ATTR_LIST(encoding), 1273 ATTR_LIST(mounted_time_sec), 1274 #ifdef CONFIG_F2FS_STAT_FS 1275 ATTR_LIST(cp_foreground_calls), 1276 ATTR_LIST(cp_background_calls), 1277 ATTR_LIST(gc_foreground_calls), 1278 ATTR_LIST(gc_background_calls), 1279 ATTR_LIST(moved_blocks_foreground), 1280 ATTR_LIST(moved_blocks_background), 1281 ATTR_LIST(avg_vblocks), 1282 #endif 1283 #ifdef CONFIG_BLK_DEV_ZONED 1284 ATTR_LIST(unusable_blocks_per_sec), 1285 ATTR_LIST(blkzone_alloc_policy), 1286 #endif 1287 #ifdef CONFIG_F2FS_FS_COMPRESSION 1288 ATTR_LIST(compr_written_block), 1289 ATTR_LIST(compr_saved_block), 1290 ATTR_LIST(compr_new_inode), 1291 ATTR_LIST(compress_percent), 1292 ATTR_LIST(compress_watermark), 1293 #endif 1294 /* For ATGC */ 1295 ATTR_LIST(atgc_candidate_ratio), 1296 ATTR_LIST(atgc_candidate_count), 1297 ATTR_LIST(atgc_age_weight), 1298 ATTR_LIST(atgc_age_threshold), 1299 ATTR_LIST(atgc_enabled), 1300 ATTR_LIST(seq_file_ra_mul), 1301 ATTR_LIST(gc_segment_mode), 1302 ATTR_LIST(gc_reclaimed_segments), 1303 ATTR_LIST(max_fragment_chunk), 1304 ATTR_LIST(max_fragment_hole), 1305 ATTR_LIST(current_atomic_write), 1306 ATTR_LIST(peak_atomic_write), 1307 ATTR_LIST(committed_atomic_block), 1308 ATTR_LIST(revoked_atomic_block), 1309 ATTR_LIST(hot_data_age_threshold), 1310 ATTR_LIST(warm_data_age_threshold), 1311 ATTR_LIST(last_age_weight), 1312 ATTR_LIST(max_read_extent_count), 1313 ATTR_LIST(carve_out), 1314 NULL, 1315 }; 1316 ATTRIBUTE_GROUPS(f2fs); 1317 1318 #define BASE_ATTR_LIST(name) (&f2fs_base_attr_##name.attr) 1319 static struct attribute *f2fs_feat_attrs[] = { 1320 #ifdef CONFIG_FS_ENCRYPTION 1321 BASE_ATTR_LIST(encryption), 1322 BASE_ATTR_LIST(test_dummy_encryption_v2), 1323 #if IS_ENABLED(CONFIG_UNICODE) 1324 BASE_ATTR_LIST(encrypted_casefold), 1325 #endif 1326 #endif /* CONFIG_FS_ENCRYPTION */ 1327 #ifdef CONFIG_BLK_DEV_ZONED 1328 BASE_ATTR_LIST(block_zoned), 1329 #endif 1330 BASE_ATTR_LIST(atomic_write), 1331 BASE_ATTR_LIST(extra_attr), 1332 BASE_ATTR_LIST(project_quota), 1333 BASE_ATTR_LIST(inode_checksum), 1334 BASE_ATTR_LIST(flexible_inline_xattr), 1335 BASE_ATTR_LIST(quota_ino), 1336 BASE_ATTR_LIST(inode_crtime), 1337 BASE_ATTR_LIST(lost_found), 1338 #ifdef CONFIG_FS_VERITY 1339 BASE_ATTR_LIST(verity), 1340 #endif 1341 BASE_ATTR_LIST(sb_checksum), 1342 #if IS_ENABLED(CONFIG_UNICODE) 1343 BASE_ATTR_LIST(casefold), 1344 #endif 1345 BASE_ATTR_LIST(readonly), 1346 #ifdef CONFIG_F2FS_FS_COMPRESSION 1347 BASE_ATTR_LIST(compression), 1348 #endif 1349 BASE_ATTR_LIST(pin_file), 1350 NULL, 1351 }; 1352 ATTRIBUTE_GROUPS(f2fs_feat); 1353 1354 F2FS_GENERAL_RO_ATTR(sb_status); 1355 F2FS_GENERAL_RO_ATTR(cp_status); 1356 F2FS_GENERAL_RO_ATTR(issued_discard); 1357 F2FS_GENERAL_RO_ATTR(queued_discard); 1358 F2FS_GENERAL_RO_ATTR(undiscard_blks); 1359 1360 static struct attribute *f2fs_stat_attrs[] = { 1361 ATTR_LIST(sb_status), 1362 ATTR_LIST(cp_status), 1363 ATTR_LIST(issued_discard), 1364 ATTR_LIST(queued_discard), 1365 ATTR_LIST(undiscard_blks), 1366 NULL, 1367 }; 1368 ATTRIBUTE_GROUPS(f2fs_stat); 1369 1370 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT); 1371 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED); 1372 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR); 1373 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA); 1374 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM); 1375 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR); 1376 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO); 1377 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME); 1378 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND); 1379 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY); 1380 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM); 1381 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD); 1382 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION); 1383 F2FS_SB_FEATURE_RO_ATTR(readonly, RO); 1384 F2FS_SB_FEATURE_RO_ATTR(device_alias, DEVICE_ALIAS); 1385 1386 static struct attribute *f2fs_sb_feat_attrs[] = { 1387 ATTR_LIST(sb_encryption), 1388 ATTR_LIST(sb_block_zoned), 1389 ATTR_LIST(sb_extra_attr), 1390 ATTR_LIST(sb_project_quota), 1391 ATTR_LIST(sb_inode_checksum), 1392 ATTR_LIST(sb_flexible_inline_xattr), 1393 ATTR_LIST(sb_quota_ino), 1394 ATTR_LIST(sb_inode_crtime), 1395 ATTR_LIST(sb_lost_found), 1396 ATTR_LIST(sb_verity), 1397 ATTR_LIST(sb_sb_checksum), 1398 ATTR_LIST(sb_casefold), 1399 ATTR_LIST(sb_compression), 1400 ATTR_LIST(sb_readonly), 1401 ATTR_LIST(sb_device_alias), 1402 NULL, 1403 }; 1404 ATTRIBUTE_GROUPS(f2fs_sb_feat); 1405 1406 F2FS_TUNE_RW_ATTR(reclaim_caches_kb); 1407 1408 static struct attribute *f2fs_tune_attrs[] = { 1409 BASE_ATTR_LIST(reclaim_caches_kb), 1410 NULL, 1411 }; 1412 ATTRIBUTE_GROUPS(f2fs_tune); 1413 1414 static const struct sysfs_ops f2fs_attr_ops = { 1415 .show = f2fs_attr_show, 1416 .store = f2fs_attr_store, 1417 }; 1418 1419 static const struct kobj_type f2fs_sb_ktype = { 1420 .default_groups = f2fs_groups, 1421 .sysfs_ops = &f2fs_attr_ops, 1422 .release = f2fs_sb_release, 1423 }; 1424 1425 static const struct kobj_type f2fs_ktype = { 1426 .sysfs_ops = &f2fs_attr_ops, 1427 }; 1428 1429 static struct kset f2fs_kset = { 1430 .kobj = {.ktype = &f2fs_ktype}, 1431 }; 1432 1433 static const struct sysfs_ops f2fs_feat_attr_ops = { 1434 .show = f2fs_base_attr_show, 1435 .store = f2fs_base_attr_store, 1436 }; 1437 1438 static const struct kobj_type f2fs_feat_ktype = { 1439 .default_groups = f2fs_feat_groups, 1440 .sysfs_ops = &f2fs_feat_attr_ops, 1441 }; 1442 1443 static struct kobject f2fs_feat = { 1444 .kset = &f2fs_kset, 1445 }; 1446 1447 static const struct sysfs_ops f2fs_tune_attr_ops = { 1448 .show = f2fs_base_attr_show, 1449 .store = f2fs_base_attr_store, 1450 }; 1451 1452 static const struct kobj_type f2fs_tune_ktype = { 1453 .default_groups = f2fs_tune_groups, 1454 .sysfs_ops = &f2fs_tune_attr_ops, 1455 }; 1456 1457 static struct kobject f2fs_tune = { 1458 .kset = &f2fs_kset, 1459 }; 1460 1461 static ssize_t f2fs_stat_attr_show(struct kobject *kobj, 1462 struct attribute *attr, char *buf) 1463 { 1464 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1465 s_stat_kobj); 1466 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1467 1468 return a->show ? a->show(a, sbi, buf) : 0; 1469 } 1470 1471 static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr, 1472 const char *buf, size_t len) 1473 { 1474 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1475 s_stat_kobj); 1476 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1477 1478 return a->store ? a->store(a, sbi, buf, len) : 0; 1479 } 1480 1481 static void f2fs_stat_kobj_release(struct kobject *kobj) 1482 { 1483 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1484 s_stat_kobj); 1485 complete(&sbi->s_stat_kobj_unregister); 1486 } 1487 1488 static const struct sysfs_ops f2fs_stat_attr_ops = { 1489 .show = f2fs_stat_attr_show, 1490 .store = f2fs_stat_attr_store, 1491 }; 1492 1493 static const struct kobj_type f2fs_stat_ktype = { 1494 .default_groups = f2fs_stat_groups, 1495 .sysfs_ops = &f2fs_stat_attr_ops, 1496 .release = f2fs_stat_kobj_release, 1497 }; 1498 1499 static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj, 1500 struct attribute *attr, char *buf) 1501 { 1502 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1503 s_feature_list_kobj); 1504 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1505 1506 return a->show ? a->show(a, sbi, buf) : 0; 1507 } 1508 1509 static void f2fs_feature_list_kobj_release(struct kobject *kobj) 1510 { 1511 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1512 s_feature_list_kobj); 1513 complete(&sbi->s_feature_list_kobj_unregister); 1514 } 1515 1516 static const struct sysfs_ops f2fs_feature_list_attr_ops = { 1517 .show = f2fs_sb_feat_attr_show, 1518 }; 1519 1520 static const struct kobj_type f2fs_feature_list_ktype = { 1521 .default_groups = f2fs_sb_feat_groups, 1522 .sysfs_ops = &f2fs_feature_list_attr_ops, 1523 .release = f2fs_feature_list_kobj_release, 1524 }; 1525 1526 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 1527 void *offset) 1528 { 1529 struct super_block *sb = seq->private; 1530 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1531 unsigned int total_segs = 1532 le32_to_cpu(sbi->raw_super->segment_count_main); 1533 int i; 1534 1535 seq_puts(seq, "format: segment_type|valid_blocks\n" 1536 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1537 1538 for (i = 0; i < total_segs; i++) { 1539 struct seg_entry *se = get_seg_entry(sbi, i); 1540 1541 if ((i % 10) == 0) 1542 seq_printf(seq, "%-10d", i); 1543 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 1544 if ((i % 10) == 9 || i == (total_segs - 1)) 1545 seq_putc(seq, '\n'); 1546 else 1547 seq_putc(seq, ' '); 1548 } 1549 1550 return 0; 1551 } 1552 1553 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 1554 void *offset) 1555 { 1556 struct super_block *sb = seq->private; 1557 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1558 unsigned int total_segs = 1559 le32_to_cpu(sbi->raw_super->segment_count_main); 1560 int i, j; 1561 1562 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps|mtime\n" 1563 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1564 1565 for (i = 0; i < total_segs; i++) { 1566 struct seg_entry *se = get_seg_entry(sbi, i); 1567 1568 seq_printf(seq, "%-10d", i); 1569 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 1570 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 1571 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 1572 seq_printf(seq, "| %llx", se->mtime); 1573 seq_putc(seq, '\n'); 1574 } 1575 return 0; 1576 } 1577 1578 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 1579 void *offset) 1580 { 1581 struct super_block *sb = seq->private; 1582 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1583 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 1584 int i; 1585 1586 seq_puts(seq, "format: victim_secmap bitmaps\n"); 1587 1588 for (i = 0; i < MAIN_SECS(sbi); i++) { 1589 if ((i % 10) == 0) 1590 seq_printf(seq, "%-10d", i); 1591 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 1592 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 1593 seq_putc(seq, '\n'); 1594 else 1595 seq_putc(seq, ' '); 1596 } 1597 return 0; 1598 } 1599 1600 static int __maybe_unused discard_plist_seq_show(struct seq_file *seq, 1601 void *offset) 1602 { 1603 struct super_block *sb = seq->private; 1604 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1605 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 1606 int i, count; 1607 1608 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n"); 1609 if (!f2fs_realtime_discard_enable(sbi)) 1610 return 0; 1611 1612 if (dcc) { 1613 mutex_lock(&dcc->cmd_lock); 1614 for (i = 0; i < MAX_PLIST_NUM; i++) { 1615 struct list_head *pend_list; 1616 struct discard_cmd *dc, *tmp; 1617 1618 if (i % 8 == 0) 1619 seq_printf(seq, " %-3d", i); 1620 count = 0; 1621 pend_list = &dcc->pend_list[i]; 1622 list_for_each_entry_safe(dc, tmp, pend_list, list) 1623 count++; 1624 if (count) 1625 seq_printf(seq, " %7d", count); 1626 else 1627 seq_puts(seq, " ."); 1628 if (i % 8 == 7) 1629 seq_putc(seq, '\n'); 1630 } 1631 seq_putc(seq, '\n'); 1632 mutex_unlock(&dcc->cmd_lock); 1633 } 1634 1635 return 0; 1636 } 1637 1638 static int __maybe_unused disk_map_seq_show(struct seq_file *seq, 1639 void *offset) 1640 { 1641 struct super_block *sb = seq->private; 1642 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1643 int i; 1644 1645 seq_printf(seq, "Address Layout : %5luB Block address (# of Segments)\n", 1646 F2FS_BLKSIZE); 1647 seq_printf(seq, " SB : %12s\n", "0/1024B"); 1648 seq_printf(seq, " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi)); 1649 seq_printf(seq, " Checkpoint : 0x%010x (%10d)\n", 1650 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2); 1651 seq_printf(seq, " SIT : 0x%010x (%10d)\n", 1652 SIT_I(sbi)->sit_base_addr, 1653 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit)); 1654 seq_printf(seq, " NAT : 0x%010x (%10d)\n", 1655 NM_I(sbi)->nat_blkaddr, 1656 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat)); 1657 seq_printf(seq, " SSA : 0x%010x (%10d)\n", 1658 SM_I(sbi)->ssa_blkaddr, 1659 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa)); 1660 seq_printf(seq, " Main : 0x%010x (%10d)\n", 1661 SM_I(sbi)->main_blkaddr, 1662 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main)); 1663 seq_printf(seq, " # of Sections : %12d\n", 1664 le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count)); 1665 seq_printf(seq, " Segs/Sections : %12d\n", 1666 SEGS_PER_SEC(sbi)); 1667 seq_printf(seq, " Section size : %12d MB\n", 1668 SEGS_PER_SEC(sbi) << 1); 1669 1670 if (!f2fs_is_multi_device(sbi)) 1671 return 0; 1672 1673 seq_puts(seq, "\nDisk Map for multi devices:\n"); 1674 for (i = 0; i < sbi->s_ndevs; i++) 1675 seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n", 1676 i, bdev_is_zoned(FDEV(i).bdev), 1677 FDEV(i).start_blk, FDEV(i).end_blk, 1678 FDEV(i).path); 1679 return 0; 1680 } 1681 1682 int __init f2fs_init_sysfs(void) 1683 { 1684 int ret; 1685 1686 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 1687 f2fs_kset.kobj.parent = fs_kobj; 1688 ret = kset_register(&f2fs_kset); 1689 if (ret) 1690 return ret; 1691 1692 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 1693 NULL, "features"); 1694 if (ret) 1695 goto put_kobject; 1696 1697 ret = kobject_init_and_add(&f2fs_tune, &f2fs_tune_ktype, 1698 NULL, "tuning"); 1699 if (ret) 1700 goto put_kobject; 1701 1702 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 1703 if (!f2fs_proc_root) { 1704 ret = -ENOMEM; 1705 goto put_kobject; 1706 } 1707 1708 return 0; 1709 1710 put_kobject: 1711 kobject_put(&f2fs_tune); 1712 kobject_put(&f2fs_feat); 1713 kset_unregister(&f2fs_kset); 1714 return ret; 1715 } 1716 1717 void f2fs_exit_sysfs(void) 1718 { 1719 kobject_put(&f2fs_tune); 1720 kobject_put(&f2fs_feat); 1721 kset_unregister(&f2fs_kset); 1722 remove_proc_entry("fs/f2fs", NULL); 1723 f2fs_proc_root = NULL; 1724 } 1725 1726 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 1727 { 1728 struct super_block *sb = sbi->sb; 1729 int err; 1730 1731 sbi->s_kobj.kset = &f2fs_kset; 1732 init_completion(&sbi->s_kobj_unregister); 1733 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 1734 "%s", sb->s_id); 1735 if (err) 1736 goto put_sb_kobj; 1737 1738 sbi->s_stat_kobj.kset = &f2fs_kset; 1739 init_completion(&sbi->s_stat_kobj_unregister); 1740 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype, 1741 &sbi->s_kobj, "stat"); 1742 if (err) 1743 goto put_stat_kobj; 1744 1745 sbi->s_feature_list_kobj.kset = &f2fs_kset; 1746 init_completion(&sbi->s_feature_list_kobj_unregister); 1747 err = kobject_init_and_add(&sbi->s_feature_list_kobj, 1748 &f2fs_feature_list_ktype, 1749 &sbi->s_kobj, "feature_list"); 1750 if (err) 1751 goto put_feature_list_kobj; 1752 1753 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 1754 if (!sbi->s_proc) { 1755 err = -ENOMEM; 1756 goto put_feature_list_kobj; 1757 } 1758 1759 proc_create_single_data("segment_info", 0444, sbi->s_proc, 1760 segment_info_seq_show, sb); 1761 proc_create_single_data("segment_bits", 0444, sbi->s_proc, 1762 segment_bits_seq_show, sb); 1763 #ifdef CONFIG_F2FS_IOSTAT 1764 proc_create_single_data("iostat_info", 0444, sbi->s_proc, 1765 iostat_info_seq_show, sb); 1766 #endif 1767 proc_create_single_data("victim_bits", 0444, sbi->s_proc, 1768 victim_bits_seq_show, sb); 1769 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc, 1770 discard_plist_seq_show, sb); 1771 proc_create_single_data("disk_map", 0444, sbi->s_proc, 1772 disk_map_seq_show, sb); 1773 return 0; 1774 put_feature_list_kobj: 1775 kobject_put(&sbi->s_feature_list_kobj); 1776 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1777 put_stat_kobj: 1778 kobject_put(&sbi->s_stat_kobj); 1779 wait_for_completion(&sbi->s_stat_kobj_unregister); 1780 put_sb_kobj: 1781 kobject_put(&sbi->s_kobj); 1782 wait_for_completion(&sbi->s_kobj_unregister); 1783 return err; 1784 } 1785 1786 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 1787 { 1788 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root); 1789 1790 kobject_put(&sbi->s_stat_kobj); 1791 wait_for_completion(&sbi->s_stat_kobj_unregister); 1792 kobject_put(&sbi->s_feature_list_kobj); 1793 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1794 1795 kobject_put(&sbi->s_kobj); 1796 wait_for_completion(&sbi->s_kobj_unregister); 1797 } 1798