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