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 SEGS_TO_BLKS(sbi, 506 SM_I(sbi)->additional_reserved_segments))) { 507 spin_unlock(&sbi->stat_lock); 508 return -EINVAL; 509 } 510 *ui = t; 511 sbi->current_reserved_blocks = min(sbi->reserved_blocks, 512 sbi->user_block_count - valid_user_blocks(sbi)); 513 spin_unlock(&sbi->stat_lock); 514 return count; 515 } 516 517 if (!strcmp(a->attr.name, "discard_io_aware_gran")) { 518 if (t > MAX_PLIST_NUM) 519 return -EINVAL; 520 if (!f2fs_block_unit_discard(sbi)) 521 return -EINVAL; 522 if (t == *ui) 523 return count; 524 *ui = t; 525 return count; 526 } 527 528 if (!strcmp(a->attr.name, "discard_granularity")) { 529 if (t == 0 || t > MAX_PLIST_NUM) 530 return -EINVAL; 531 if (!f2fs_block_unit_discard(sbi)) 532 return -EINVAL; 533 if (t == *ui) 534 return count; 535 *ui = t; 536 return count; 537 } 538 539 if (!strcmp(a->attr.name, "max_ordered_discard")) { 540 if (t == 0 || t > MAX_PLIST_NUM) 541 return -EINVAL; 542 if (!f2fs_block_unit_discard(sbi)) 543 return -EINVAL; 544 *ui = t; 545 return count; 546 } 547 548 if (!strcmp(a->attr.name, "discard_urgent_util")) { 549 if (t > 100) 550 return -EINVAL; 551 *ui = t; 552 return count; 553 } 554 555 if (!strcmp(a->attr.name, "discard_io_aware")) { 556 if (t >= DPOLICY_IO_AWARE_MAX) 557 return -EINVAL; 558 *ui = t; 559 return count; 560 } 561 562 if (!strcmp(a->attr.name, "migration_granularity")) { 563 if (t == 0 || t > SEGS_PER_SEC(sbi)) 564 return -EINVAL; 565 } 566 567 if (!strcmp(a->attr.name, "migration_window_granularity")) { 568 if (t == 0 || t > SEGS_PER_SEC(sbi)) 569 return -EINVAL; 570 } 571 572 if (!strcmp(a->attr.name, "gc_urgent")) { 573 if (t == 0) { 574 sbi->gc_mode = GC_NORMAL; 575 } else if (t == 1) { 576 sbi->gc_mode = GC_URGENT_HIGH; 577 if (sbi->gc_thread) { 578 sbi->gc_thread->gc_wake = true; 579 wake_up_interruptible_all( 580 &sbi->gc_thread->gc_wait_queue_head); 581 wake_up_discard_thread(sbi, true); 582 } 583 } else if (t == 2) { 584 sbi->gc_mode = GC_URGENT_LOW; 585 } else if (t == 3) { 586 sbi->gc_mode = GC_URGENT_MID; 587 if (sbi->gc_thread) { 588 sbi->gc_thread->gc_wake = true; 589 wake_up_interruptible_all( 590 &sbi->gc_thread->gc_wait_queue_head); 591 } 592 } else { 593 return -EINVAL; 594 } 595 return count; 596 } 597 if (!strcmp(a->attr.name, "gc_idle")) { 598 if (t == GC_IDLE_CB) { 599 sbi->gc_mode = GC_IDLE_CB; 600 } else if (t == GC_IDLE_GREEDY) { 601 sbi->gc_mode = GC_IDLE_GREEDY; 602 } else if (t == GC_IDLE_AT) { 603 if (!sbi->am.atgc_enabled) 604 return -EINVAL; 605 sbi->gc_mode = GC_IDLE_AT; 606 } else { 607 sbi->gc_mode = GC_NORMAL; 608 } 609 return count; 610 } 611 612 if (!strcmp(a->attr.name, "gc_remaining_trials")) { 613 spin_lock(&sbi->gc_remaining_trials_lock); 614 sbi->gc_remaining_trials = t; 615 spin_unlock(&sbi->gc_remaining_trials_lock); 616 617 return count; 618 } 619 620 #ifdef CONFIG_F2FS_IOSTAT 621 if (!strcmp(a->attr.name, "iostat_enable")) { 622 sbi->iostat_enable = !!t; 623 if (!sbi->iostat_enable) 624 f2fs_reset_iostat(sbi); 625 return count; 626 } 627 628 if (!strcmp(a->attr.name, "iostat_period_ms")) { 629 if (t < MIN_IOSTAT_PERIOD_MS || t > MAX_IOSTAT_PERIOD_MS) 630 return -EINVAL; 631 spin_lock_irq(&sbi->iostat_lock); 632 sbi->iostat_period_ms = (unsigned int)t; 633 spin_unlock_irq(&sbi->iostat_lock); 634 return count; 635 } 636 #endif 637 638 #ifdef CONFIG_BLK_DEV_ZONED 639 if (!strcmp(a->attr.name, "blkzone_alloc_policy")) { 640 if (t < BLKZONE_ALLOC_PRIOR_SEQ || t > BLKZONE_ALLOC_PRIOR_CONV) 641 return -EINVAL; 642 sbi->blkzone_alloc_policy = t; 643 return count; 644 } 645 #endif 646 647 #ifdef CONFIG_F2FS_FS_COMPRESSION 648 if (!strcmp(a->attr.name, "compr_written_block") || 649 !strcmp(a->attr.name, "compr_saved_block")) { 650 if (t != 0) 651 return -EINVAL; 652 sbi->compr_written_block = 0; 653 sbi->compr_saved_block = 0; 654 return count; 655 } 656 657 if (!strcmp(a->attr.name, "compr_new_inode")) { 658 if (t != 0) 659 return -EINVAL; 660 sbi->compr_new_inode = 0; 661 return count; 662 } 663 664 if (!strcmp(a->attr.name, "compress_percent")) { 665 if (t == 0 || t > 100) 666 return -EINVAL; 667 *ui = t; 668 return count; 669 } 670 671 if (!strcmp(a->attr.name, "compress_watermark")) { 672 if (t == 0 || t > 100) 673 return -EINVAL; 674 *ui = t; 675 return count; 676 } 677 #endif 678 679 if (!strcmp(a->attr.name, "atgc_candidate_ratio")) { 680 if (t > 100) 681 return -EINVAL; 682 sbi->am.candidate_ratio = t; 683 return count; 684 } 685 686 if (!strcmp(a->attr.name, "atgc_age_weight")) { 687 if (t > 100) 688 return -EINVAL; 689 sbi->am.age_weight = t; 690 return count; 691 } 692 693 if (!strcmp(a->attr.name, "gc_segment_mode")) { 694 if (t < MAX_GC_MODE) 695 sbi->gc_segment_mode = t; 696 else 697 return -EINVAL; 698 return count; 699 } 700 701 if (!strcmp(a->attr.name, "gc_pin_file_threshold")) { 702 if (t > MAX_GC_FAILED_PINNED_FILES) 703 return -EINVAL; 704 sbi->gc_pin_file_threshold = t; 705 return count; 706 } 707 708 if (!strcmp(a->attr.name, "gc_reclaimed_segments")) { 709 if (t != 0) 710 return -EINVAL; 711 sbi->gc_reclaimed_segs[sbi->gc_segment_mode] = 0; 712 return count; 713 } 714 715 if (!strcmp(a->attr.name, "seq_file_ra_mul")) { 716 if (t >= MIN_RA_MUL && t <= MAX_RA_MUL) 717 sbi->seq_file_ra_mul = t; 718 else 719 return -EINVAL; 720 return count; 721 } 722 723 if (!strcmp(a->attr.name, "max_fragment_chunk")) { 724 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 725 sbi->max_fragment_chunk = t; 726 else 727 return -EINVAL; 728 return count; 729 } 730 731 if (!strcmp(a->attr.name, "max_fragment_hole")) { 732 if (t >= MIN_FRAGMENT_SIZE && t <= MAX_FRAGMENT_SIZE) 733 sbi->max_fragment_hole = t; 734 else 735 return -EINVAL; 736 return count; 737 } 738 739 if (!strcmp(a->attr.name, "peak_atomic_write")) { 740 if (t != 0) 741 return -EINVAL; 742 sbi->peak_atomic_write = 0; 743 return count; 744 } 745 746 if (!strcmp(a->attr.name, "committed_atomic_block")) { 747 if (t != 0) 748 return -EINVAL; 749 sbi->committed_atomic_block = 0; 750 return count; 751 } 752 753 if (!strcmp(a->attr.name, "revoked_atomic_block")) { 754 if (t != 0) 755 return -EINVAL; 756 sbi->revoked_atomic_block = 0; 757 return count; 758 } 759 760 if (!strcmp(a->attr.name, "readdir_ra")) { 761 sbi->readdir_ra = !!t; 762 return count; 763 } 764 765 if (!strcmp(a->attr.name, "hot_data_age_threshold")) { 766 if (t == 0 || t >= sbi->warm_data_age_threshold) 767 return -EINVAL; 768 if (t == *ui) 769 return count; 770 *ui = (unsigned int)t; 771 return count; 772 } 773 774 if (!strcmp(a->attr.name, "warm_data_age_threshold")) { 775 if (t <= sbi->hot_data_age_threshold) 776 return -EINVAL; 777 if (t == *ui) 778 return count; 779 *ui = (unsigned int)t; 780 return count; 781 } 782 783 if (!strcmp(a->attr.name, "last_age_weight")) { 784 if (t > 100) 785 return -EINVAL; 786 if (t == *ui) 787 return count; 788 *ui = (unsigned int)t; 789 return count; 790 } 791 792 if (!strcmp(a->attr.name, "ipu_policy")) { 793 if (t >= BIT(F2FS_IPU_MAX)) 794 return -EINVAL; 795 /* allow F2FS_IPU_NOCACHE only for IPU in the pinned file */ 796 if (f2fs_lfs_mode(sbi) && (t & ~BIT(F2FS_IPU_NOCACHE))) 797 return -EINVAL; 798 SM_I(sbi)->ipu_policy = (unsigned int)t; 799 return count; 800 } 801 802 if (!strcmp(a->attr.name, "dir_level")) { 803 if (t > MAX_DIR_HASH_DEPTH) 804 return -EINVAL; 805 sbi->dir_level = t; 806 return count; 807 } 808 809 *ui = (unsigned int)t; 810 811 return count; 812 } 813 814 static ssize_t f2fs_sbi_store(struct f2fs_attr *a, 815 struct f2fs_sb_info *sbi, 816 const char *buf, size_t count) 817 { 818 ssize_t ret; 819 bool gc_entry = (!strcmp(a->attr.name, "gc_urgent") || 820 a->struct_type == GC_THREAD); 821 822 if (gc_entry) { 823 if (!down_read_trylock(&sbi->sb->s_umount)) 824 return -EAGAIN; 825 } 826 ret = __sbi_store(a, sbi, buf, count); 827 if (gc_entry) 828 up_read(&sbi->sb->s_umount); 829 830 return ret; 831 } 832 833 static ssize_t f2fs_attr_show(struct kobject *kobj, 834 struct attribute *attr, char *buf) 835 { 836 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 837 s_kobj); 838 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 839 840 return a->show ? a->show(a, sbi, buf) : 0; 841 } 842 843 static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, 844 const char *buf, size_t len) 845 { 846 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 847 s_kobj); 848 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 849 850 return a->store ? a->store(a, sbi, buf, len) : 0; 851 } 852 853 static void f2fs_sb_release(struct kobject *kobj) 854 { 855 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 856 s_kobj); 857 complete(&sbi->s_kobj_unregister); 858 } 859 860 /* 861 * Note that there are three feature list entries: 862 * 1) /sys/fs/f2fs/features 863 * : shows runtime features supported by in-kernel f2fs along with Kconfig. 864 * - ref. F2FS_FEATURE_RO_ATTR() 865 * 866 * 2) /sys/fs/f2fs/$s_id/features <deprecated> 867 * : shows on-disk features enabled by mkfs.f2fs, used for old kernels. This 868 * won't add new feature anymore, and thus, users should check entries in 3) 869 * instead of this 2). 870 * 871 * 3) /sys/fs/f2fs/$s_id/feature_list 872 * : shows on-disk features enabled by mkfs.f2fs per instance, which follows 873 * sysfs entry rule where each entry should expose single value. 874 * This list covers old feature list provided by 2) and beyond. Therefore, 875 * please add new on-disk feature in this list only. 876 * - ref. F2FS_SB_FEATURE_RO_ATTR() 877 */ 878 static ssize_t f2fs_feature_show(struct f2fs_attr *a, 879 struct f2fs_sb_info *sbi, char *buf) 880 { 881 return sysfs_emit(buf, "supported\n"); 882 } 883 884 #define F2FS_FEATURE_RO_ATTR(_name) \ 885 static struct f2fs_attr f2fs_attr_##_name = { \ 886 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 887 .show = f2fs_feature_show, \ 888 } 889 890 static ssize_t f2fs_sb_feature_show(struct f2fs_attr *a, 891 struct f2fs_sb_info *sbi, char *buf) 892 { 893 if (F2FS_HAS_FEATURE(sbi, a->id)) 894 return sysfs_emit(buf, "supported\n"); 895 return sysfs_emit(buf, "unsupported\n"); 896 } 897 898 #define F2FS_SB_FEATURE_RO_ATTR(_name, _feat) \ 899 static struct f2fs_attr f2fs_attr_sb_##_name = { \ 900 .attr = {.name = __stringify(_name), .mode = 0444 }, \ 901 .show = f2fs_sb_feature_show, \ 902 .id = F2FS_FEATURE_##_feat, \ 903 } 904 905 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ 906 static struct f2fs_attr f2fs_attr_##_name = { \ 907 .attr = {.name = __stringify(_name), .mode = _mode }, \ 908 .show = _show, \ 909 .store = _store, \ 910 .struct_type = _struct_type, \ 911 .offset = _offset \ 912 } 913 914 #define F2FS_RO_ATTR(struct_type, struct_name, name, elname) \ 915 F2FS_ATTR_OFFSET(struct_type, name, 0444, \ 916 f2fs_sbi_show, NULL, \ 917 offsetof(struct struct_name, elname)) 918 919 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ 920 F2FS_ATTR_OFFSET(struct_type, name, 0644, \ 921 f2fs_sbi_show, f2fs_sbi_store, \ 922 offsetof(struct struct_name, elname)) 923 924 #define F2FS_GENERAL_RO_ATTR(name) \ 925 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) 926 927 #ifdef CONFIG_F2FS_STAT_FS 928 #define STAT_INFO_RO_ATTR(name, elname) \ 929 F2FS_RO_ATTR(STAT_INFO, f2fs_stat_info, name, elname) 930 #endif 931 932 #define GC_THREAD_RW_ATTR(name, elname) \ 933 F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, name, elname) 934 935 #define SM_INFO_RW_ATTR(name, elname) \ 936 F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, name, elname) 937 938 #define SM_INFO_GENERAL_RW_ATTR(elname) \ 939 SM_INFO_RW_ATTR(elname, elname) 940 941 #define DCC_INFO_RW_ATTR(name, elname) \ 942 F2FS_RW_ATTR(DCC_INFO, discard_cmd_control, name, elname) 943 944 #define DCC_INFO_GENERAL_RW_ATTR(elname) \ 945 DCC_INFO_RW_ATTR(elname, elname) 946 947 #define NM_INFO_RW_ATTR(name, elname) \ 948 F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, name, elname) 949 950 #define NM_INFO_GENERAL_RW_ATTR(elname) \ 951 NM_INFO_RW_ATTR(elname, elname) 952 953 #define F2FS_SBI_RW_ATTR(name, elname) \ 954 F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, name, elname) 955 956 #define F2FS_SBI_GENERAL_RW_ATTR(elname) \ 957 F2FS_SBI_RW_ATTR(elname, elname) 958 959 #define F2FS_SBI_GENERAL_RO_ATTR(elname) \ 960 F2FS_RO_ATTR(F2FS_SBI, f2fs_sb_info, elname, elname) 961 962 #ifdef CONFIG_F2FS_FAULT_INJECTION 963 #define FAULT_INFO_GENERAL_RW_ATTR(type, elname) \ 964 F2FS_RW_ATTR(type, f2fs_fault_info, elname, elname) 965 #endif 966 967 #define RESERVED_BLOCKS_GENERAL_RW_ATTR(elname) \ 968 F2FS_RW_ATTR(RESERVED_BLOCKS, f2fs_sb_info, elname, elname) 969 970 #define CPRC_INFO_GENERAL_RW_ATTR(elname) \ 971 F2FS_RW_ATTR(CPRC_INFO, ckpt_req_control, elname, elname) 972 973 #define ATGC_INFO_RW_ATTR(name, elname) \ 974 F2FS_RW_ATTR(ATGC_INFO, atgc_management, name, elname) 975 976 /* GC_THREAD ATTR */ 977 GC_THREAD_RW_ATTR(gc_urgent_sleep_time, urgent_sleep_time); 978 GC_THREAD_RW_ATTR(gc_min_sleep_time, min_sleep_time); 979 GC_THREAD_RW_ATTR(gc_max_sleep_time, max_sleep_time); 980 GC_THREAD_RW_ATTR(gc_no_gc_sleep_time, no_gc_sleep_time); 981 GC_THREAD_RW_ATTR(gc_no_zoned_gc_percent, no_zoned_gc_percent); 982 GC_THREAD_RW_ATTR(gc_boost_zoned_gc_percent, boost_zoned_gc_percent); 983 GC_THREAD_RW_ATTR(gc_valid_thresh_ratio, valid_thresh_ratio); 984 985 /* SM_INFO ATTR */ 986 SM_INFO_RW_ATTR(reclaim_segments, rec_prefree_segments); 987 SM_INFO_GENERAL_RW_ATTR(ipu_policy); 988 SM_INFO_GENERAL_RW_ATTR(min_ipu_util); 989 SM_INFO_GENERAL_RW_ATTR(min_fsync_blocks); 990 SM_INFO_GENERAL_RW_ATTR(min_seq_blocks); 991 SM_INFO_GENERAL_RW_ATTR(min_hot_blocks); 992 SM_INFO_GENERAL_RW_ATTR(min_ssr_sections); 993 SM_INFO_GENERAL_RW_ATTR(reserved_segments); 994 995 /* DCC_INFO ATTR */ 996 DCC_INFO_RW_ATTR(max_small_discards, max_discards); 997 DCC_INFO_GENERAL_RW_ATTR(max_discard_request); 998 DCC_INFO_GENERAL_RW_ATTR(min_discard_issue_time); 999 DCC_INFO_GENERAL_RW_ATTR(mid_discard_issue_time); 1000 DCC_INFO_GENERAL_RW_ATTR(max_discard_issue_time); 1001 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware_gran); 1002 DCC_INFO_GENERAL_RW_ATTR(discard_urgent_util); 1003 DCC_INFO_GENERAL_RW_ATTR(discard_granularity); 1004 DCC_INFO_GENERAL_RW_ATTR(max_ordered_discard); 1005 DCC_INFO_GENERAL_RW_ATTR(discard_io_aware); 1006 1007 /* NM_INFO ATTR */ 1008 NM_INFO_RW_ATTR(max_roll_forward_node_blocks, max_rf_node_blocks); 1009 NM_INFO_GENERAL_RW_ATTR(ram_thresh); 1010 NM_INFO_GENERAL_RW_ATTR(ra_nid_pages); 1011 NM_INFO_GENERAL_RW_ATTR(dirty_nats_ratio); 1012 1013 /* F2FS_SBI ATTR */ 1014 F2FS_RW_ATTR(F2FS_SBI, f2fs_super_block, extension_list, extension_list); 1015 F2FS_SBI_RW_ATTR(gc_idle, gc_mode); 1016 F2FS_SBI_RW_ATTR(gc_urgent, gc_mode); 1017 F2FS_SBI_RW_ATTR(cp_interval, interval_time[CP_TIME]); 1018 F2FS_SBI_RW_ATTR(idle_interval, interval_time[REQ_TIME]); 1019 F2FS_SBI_RW_ATTR(discard_idle_interval, interval_time[DISCARD_TIME]); 1020 F2FS_SBI_RW_ATTR(gc_idle_interval, interval_time[GC_TIME]); 1021 F2FS_SBI_RW_ATTR(umount_discard_timeout, interval_time[UMOUNT_DISCARD_TIMEOUT]); 1022 F2FS_SBI_RW_ATTR(gc_pin_file_thresh, gc_pin_file_threshold); 1023 F2FS_SBI_RW_ATTR(gc_reclaimed_segments, gc_reclaimed_segs); 1024 F2FS_SBI_GENERAL_RW_ATTR(max_victim_search); 1025 F2FS_SBI_GENERAL_RW_ATTR(migration_granularity); 1026 F2FS_SBI_GENERAL_RW_ATTR(migration_window_granularity); 1027 F2FS_SBI_GENERAL_RW_ATTR(dir_level); 1028 #ifdef CONFIG_F2FS_IOSTAT 1029 F2FS_SBI_GENERAL_RW_ATTR(iostat_enable); 1030 F2FS_SBI_GENERAL_RW_ATTR(iostat_period_ms); 1031 #endif 1032 F2FS_SBI_GENERAL_RW_ATTR(readdir_ra); 1033 F2FS_SBI_GENERAL_RW_ATTR(max_io_bytes); 1034 F2FS_SBI_GENERAL_RW_ATTR(data_io_flag); 1035 F2FS_SBI_GENERAL_RW_ATTR(node_io_flag); 1036 F2FS_SBI_GENERAL_RW_ATTR(gc_remaining_trials); 1037 F2FS_SBI_GENERAL_RW_ATTR(seq_file_ra_mul); 1038 F2FS_SBI_GENERAL_RW_ATTR(gc_segment_mode); 1039 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_chunk); 1040 F2FS_SBI_GENERAL_RW_ATTR(max_fragment_hole); 1041 #ifdef CONFIG_F2FS_FS_COMPRESSION 1042 F2FS_SBI_GENERAL_RW_ATTR(compr_written_block); 1043 F2FS_SBI_GENERAL_RW_ATTR(compr_saved_block); 1044 F2FS_SBI_GENERAL_RW_ATTR(compr_new_inode); 1045 F2FS_SBI_GENERAL_RW_ATTR(compress_percent); 1046 F2FS_SBI_GENERAL_RW_ATTR(compress_watermark); 1047 #endif 1048 /* atomic write */ 1049 F2FS_SBI_GENERAL_RO_ATTR(current_atomic_write); 1050 F2FS_SBI_GENERAL_RW_ATTR(peak_atomic_write); 1051 F2FS_SBI_GENERAL_RW_ATTR(committed_atomic_block); 1052 F2FS_SBI_GENERAL_RW_ATTR(revoked_atomic_block); 1053 /* block age extent cache */ 1054 F2FS_SBI_GENERAL_RW_ATTR(hot_data_age_threshold); 1055 F2FS_SBI_GENERAL_RW_ATTR(warm_data_age_threshold); 1056 F2FS_SBI_GENERAL_RW_ATTR(last_age_weight); 1057 #ifdef CONFIG_BLK_DEV_ZONED 1058 F2FS_SBI_GENERAL_RO_ATTR(unusable_blocks_per_sec); 1059 F2FS_SBI_GENERAL_RW_ATTR(blkzone_alloc_policy); 1060 #endif 1061 1062 /* STAT_INFO ATTR */ 1063 #ifdef CONFIG_F2FS_STAT_FS 1064 STAT_INFO_RO_ATTR(cp_foreground_calls, cp_call_count[FOREGROUND]); 1065 STAT_INFO_RO_ATTR(cp_background_calls, cp_call_count[BACKGROUND]); 1066 STAT_INFO_RO_ATTR(gc_foreground_calls, gc_call_count[FOREGROUND]); 1067 STAT_INFO_RO_ATTR(gc_background_calls, gc_call_count[BACKGROUND]); 1068 #endif 1069 1070 /* FAULT_INFO ATTR */ 1071 #ifdef CONFIG_F2FS_FAULT_INJECTION 1072 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_RATE, inject_rate); 1073 FAULT_INFO_GENERAL_RW_ATTR(FAULT_INFO_TYPE, inject_type); 1074 #endif 1075 1076 /* RESERVED_BLOCKS ATTR */ 1077 RESERVED_BLOCKS_GENERAL_RW_ATTR(reserved_blocks); 1078 1079 /* CPRC_INFO ATTR */ 1080 CPRC_INFO_GENERAL_RW_ATTR(ckpt_thread_ioprio); 1081 1082 /* ATGC_INFO ATTR */ 1083 ATGC_INFO_RW_ATTR(atgc_candidate_ratio, candidate_ratio); 1084 ATGC_INFO_RW_ATTR(atgc_candidate_count, max_candidate_count); 1085 ATGC_INFO_RW_ATTR(atgc_age_weight, age_weight); 1086 ATGC_INFO_RW_ATTR(atgc_age_threshold, age_threshold); 1087 1088 F2FS_GENERAL_RO_ATTR(dirty_segments); 1089 F2FS_GENERAL_RO_ATTR(free_segments); 1090 F2FS_GENERAL_RO_ATTR(ovp_segments); 1091 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); 1092 F2FS_GENERAL_RO_ATTR(features); 1093 F2FS_GENERAL_RO_ATTR(current_reserved_blocks); 1094 F2FS_GENERAL_RO_ATTR(unusable); 1095 F2FS_GENERAL_RO_ATTR(encoding); 1096 F2FS_GENERAL_RO_ATTR(mounted_time_sec); 1097 F2FS_GENERAL_RO_ATTR(main_blkaddr); 1098 F2FS_GENERAL_RO_ATTR(pending_discard); 1099 F2FS_GENERAL_RO_ATTR(atgc_enabled); 1100 F2FS_GENERAL_RO_ATTR(gc_mode); 1101 #ifdef CONFIG_F2FS_STAT_FS 1102 F2FS_GENERAL_RO_ATTR(moved_blocks_background); 1103 F2FS_GENERAL_RO_ATTR(moved_blocks_foreground); 1104 F2FS_GENERAL_RO_ATTR(avg_vblocks); 1105 #endif 1106 1107 #ifdef CONFIG_FS_ENCRYPTION 1108 F2FS_FEATURE_RO_ATTR(encryption); 1109 F2FS_FEATURE_RO_ATTR(test_dummy_encryption_v2); 1110 #if IS_ENABLED(CONFIG_UNICODE) 1111 F2FS_FEATURE_RO_ATTR(encrypted_casefold); 1112 #endif 1113 #endif /* CONFIG_FS_ENCRYPTION */ 1114 #ifdef CONFIG_BLK_DEV_ZONED 1115 F2FS_FEATURE_RO_ATTR(block_zoned); 1116 #endif 1117 F2FS_FEATURE_RO_ATTR(atomic_write); 1118 F2FS_FEATURE_RO_ATTR(extra_attr); 1119 F2FS_FEATURE_RO_ATTR(project_quota); 1120 F2FS_FEATURE_RO_ATTR(inode_checksum); 1121 F2FS_FEATURE_RO_ATTR(flexible_inline_xattr); 1122 F2FS_FEATURE_RO_ATTR(quota_ino); 1123 F2FS_FEATURE_RO_ATTR(inode_crtime); 1124 F2FS_FEATURE_RO_ATTR(lost_found); 1125 #ifdef CONFIG_FS_VERITY 1126 F2FS_FEATURE_RO_ATTR(verity); 1127 #endif 1128 F2FS_FEATURE_RO_ATTR(sb_checksum); 1129 #if IS_ENABLED(CONFIG_UNICODE) 1130 F2FS_FEATURE_RO_ATTR(casefold); 1131 #endif 1132 F2FS_FEATURE_RO_ATTR(readonly); 1133 #ifdef CONFIG_F2FS_FS_COMPRESSION 1134 F2FS_FEATURE_RO_ATTR(compression); 1135 #endif 1136 F2FS_FEATURE_RO_ATTR(pin_file); 1137 1138 #define ATTR_LIST(name) (&f2fs_attr_##name.attr) 1139 static struct attribute *f2fs_attrs[] = { 1140 ATTR_LIST(gc_urgent_sleep_time), 1141 ATTR_LIST(gc_min_sleep_time), 1142 ATTR_LIST(gc_max_sleep_time), 1143 ATTR_LIST(gc_no_gc_sleep_time), 1144 ATTR_LIST(gc_no_zoned_gc_percent), 1145 ATTR_LIST(gc_boost_zoned_gc_percent), 1146 ATTR_LIST(gc_valid_thresh_ratio), 1147 ATTR_LIST(gc_idle), 1148 ATTR_LIST(gc_urgent), 1149 ATTR_LIST(reclaim_segments), 1150 ATTR_LIST(main_blkaddr), 1151 ATTR_LIST(max_small_discards), 1152 ATTR_LIST(max_discard_request), 1153 ATTR_LIST(min_discard_issue_time), 1154 ATTR_LIST(mid_discard_issue_time), 1155 ATTR_LIST(max_discard_issue_time), 1156 ATTR_LIST(discard_io_aware_gran), 1157 ATTR_LIST(discard_urgent_util), 1158 ATTR_LIST(discard_granularity), 1159 ATTR_LIST(max_ordered_discard), 1160 ATTR_LIST(discard_io_aware), 1161 ATTR_LIST(pending_discard), 1162 ATTR_LIST(gc_mode), 1163 ATTR_LIST(ipu_policy), 1164 ATTR_LIST(min_ipu_util), 1165 ATTR_LIST(min_fsync_blocks), 1166 ATTR_LIST(min_seq_blocks), 1167 ATTR_LIST(min_hot_blocks), 1168 ATTR_LIST(min_ssr_sections), 1169 ATTR_LIST(reserved_segments), 1170 ATTR_LIST(max_victim_search), 1171 ATTR_LIST(migration_granularity), 1172 ATTR_LIST(migration_window_granularity), 1173 ATTR_LIST(dir_level), 1174 ATTR_LIST(ram_thresh), 1175 ATTR_LIST(ra_nid_pages), 1176 ATTR_LIST(dirty_nats_ratio), 1177 ATTR_LIST(max_roll_forward_node_blocks), 1178 ATTR_LIST(cp_interval), 1179 ATTR_LIST(idle_interval), 1180 ATTR_LIST(discard_idle_interval), 1181 ATTR_LIST(gc_idle_interval), 1182 ATTR_LIST(umount_discard_timeout), 1183 #ifdef CONFIG_F2FS_IOSTAT 1184 ATTR_LIST(iostat_enable), 1185 ATTR_LIST(iostat_period_ms), 1186 #endif 1187 ATTR_LIST(readdir_ra), 1188 ATTR_LIST(max_io_bytes), 1189 ATTR_LIST(gc_pin_file_thresh), 1190 ATTR_LIST(extension_list), 1191 #ifdef CONFIG_F2FS_FAULT_INJECTION 1192 ATTR_LIST(inject_rate), 1193 ATTR_LIST(inject_type), 1194 #endif 1195 ATTR_LIST(data_io_flag), 1196 ATTR_LIST(node_io_flag), 1197 ATTR_LIST(gc_remaining_trials), 1198 ATTR_LIST(ckpt_thread_ioprio), 1199 ATTR_LIST(dirty_segments), 1200 ATTR_LIST(free_segments), 1201 ATTR_LIST(ovp_segments), 1202 ATTR_LIST(unusable), 1203 ATTR_LIST(lifetime_write_kbytes), 1204 ATTR_LIST(features), 1205 ATTR_LIST(reserved_blocks), 1206 ATTR_LIST(current_reserved_blocks), 1207 ATTR_LIST(encoding), 1208 ATTR_LIST(mounted_time_sec), 1209 #ifdef CONFIG_F2FS_STAT_FS 1210 ATTR_LIST(cp_foreground_calls), 1211 ATTR_LIST(cp_background_calls), 1212 ATTR_LIST(gc_foreground_calls), 1213 ATTR_LIST(gc_background_calls), 1214 ATTR_LIST(moved_blocks_foreground), 1215 ATTR_LIST(moved_blocks_background), 1216 ATTR_LIST(avg_vblocks), 1217 #endif 1218 #ifdef CONFIG_BLK_DEV_ZONED 1219 ATTR_LIST(unusable_blocks_per_sec), 1220 ATTR_LIST(blkzone_alloc_policy), 1221 #endif 1222 #ifdef CONFIG_F2FS_FS_COMPRESSION 1223 ATTR_LIST(compr_written_block), 1224 ATTR_LIST(compr_saved_block), 1225 ATTR_LIST(compr_new_inode), 1226 ATTR_LIST(compress_percent), 1227 ATTR_LIST(compress_watermark), 1228 #endif 1229 /* For ATGC */ 1230 ATTR_LIST(atgc_candidate_ratio), 1231 ATTR_LIST(atgc_candidate_count), 1232 ATTR_LIST(atgc_age_weight), 1233 ATTR_LIST(atgc_age_threshold), 1234 ATTR_LIST(atgc_enabled), 1235 ATTR_LIST(seq_file_ra_mul), 1236 ATTR_LIST(gc_segment_mode), 1237 ATTR_LIST(gc_reclaimed_segments), 1238 ATTR_LIST(max_fragment_chunk), 1239 ATTR_LIST(max_fragment_hole), 1240 ATTR_LIST(current_atomic_write), 1241 ATTR_LIST(peak_atomic_write), 1242 ATTR_LIST(committed_atomic_block), 1243 ATTR_LIST(revoked_atomic_block), 1244 ATTR_LIST(hot_data_age_threshold), 1245 ATTR_LIST(warm_data_age_threshold), 1246 ATTR_LIST(last_age_weight), 1247 NULL, 1248 }; 1249 ATTRIBUTE_GROUPS(f2fs); 1250 1251 static struct attribute *f2fs_feat_attrs[] = { 1252 #ifdef CONFIG_FS_ENCRYPTION 1253 ATTR_LIST(encryption), 1254 ATTR_LIST(test_dummy_encryption_v2), 1255 #if IS_ENABLED(CONFIG_UNICODE) 1256 ATTR_LIST(encrypted_casefold), 1257 #endif 1258 #endif /* CONFIG_FS_ENCRYPTION */ 1259 #ifdef CONFIG_BLK_DEV_ZONED 1260 ATTR_LIST(block_zoned), 1261 #endif 1262 ATTR_LIST(atomic_write), 1263 ATTR_LIST(extra_attr), 1264 ATTR_LIST(project_quota), 1265 ATTR_LIST(inode_checksum), 1266 ATTR_LIST(flexible_inline_xattr), 1267 ATTR_LIST(quota_ino), 1268 ATTR_LIST(inode_crtime), 1269 ATTR_LIST(lost_found), 1270 #ifdef CONFIG_FS_VERITY 1271 ATTR_LIST(verity), 1272 #endif 1273 ATTR_LIST(sb_checksum), 1274 #if IS_ENABLED(CONFIG_UNICODE) 1275 ATTR_LIST(casefold), 1276 #endif 1277 ATTR_LIST(readonly), 1278 #ifdef CONFIG_F2FS_FS_COMPRESSION 1279 ATTR_LIST(compression), 1280 #endif 1281 ATTR_LIST(pin_file), 1282 NULL, 1283 }; 1284 ATTRIBUTE_GROUPS(f2fs_feat); 1285 1286 F2FS_GENERAL_RO_ATTR(sb_status); 1287 F2FS_GENERAL_RO_ATTR(cp_status); 1288 F2FS_GENERAL_RO_ATTR(issued_discard); 1289 F2FS_GENERAL_RO_ATTR(queued_discard); 1290 F2FS_GENERAL_RO_ATTR(undiscard_blks); 1291 1292 static struct attribute *f2fs_stat_attrs[] = { 1293 ATTR_LIST(sb_status), 1294 ATTR_LIST(cp_status), 1295 ATTR_LIST(issued_discard), 1296 ATTR_LIST(queued_discard), 1297 ATTR_LIST(undiscard_blks), 1298 NULL, 1299 }; 1300 ATTRIBUTE_GROUPS(f2fs_stat); 1301 1302 F2FS_SB_FEATURE_RO_ATTR(encryption, ENCRYPT); 1303 F2FS_SB_FEATURE_RO_ATTR(block_zoned, BLKZONED); 1304 F2FS_SB_FEATURE_RO_ATTR(extra_attr, EXTRA_ATTR); 1305 F2FS_SB_FEATURE_RO_ATTR(project_quota, PRJQUOTA); 1306 F2FS_SB_FEATURE_RO_ATTR(inode_checksum, INODE_CHKSUM); 1307 F2FS_SB_FEATURE_RO_ATTR(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR); 1308 F2FS_SB_FEATURE_RO_ATTR(quota_ino, QUOTA_INO); 1309 F2FS_SB_FEATURE_RO_ATTR(inode_crtime, INODE_CRTIME); 1310 F2FS_SB_FEATURE_RO_ATTR(lost_found, LOST_FOUND); 1311 F2FS_SB_FEATURE_RO_ATTR(verity, VERITY); 1312 F2FS_SB_FEATURE_RO_ATTR(sb_checksum, SB_CHKSUM); 1313 F2FS_SB_FEATURE_RO_ATTR(casefold, CASEFOLD); 1314 F2FS_SB_FEATURE_RO_ATTR(compression, COMPRESSION); 1315 F2FS_SB_FEATURE_RO_ATTR(readonly, RO); 1316 1317 static struct attribute *f2fs_sb_feat_attrs[] = { 1318 ATTR_LIST(sb_encryption), 1319 ATTR_LIST(sb_block_zoned), 1320 ATTR_LIST(sb_extra_attr), 1321 ATTR_LIST(sb_project_quota), 1322 ATTR_LIST(sb_inode_checksum), 1323 ATTR_LIST(sb_flexible_inline_xattr), 1324 ATTR_LIST(sb_quota_ino), 1325 ATTR_LIST(sb_inode_crtime), 1326 ATTR_LIST(sb_lost_found), 1327 ATTR_LIST(sb_verity), 1328 ATTR_LIST(sb_sb_checksum), 1329 ATTR_LIST(sb_casefold), 1330 ATTR_LIST(sb_compression), 1331 ATTR_LIST(sb_readonly), 1332 NULL, 1333 }; 1334 ATTRIBUTE_GROUPS(f2fs_sb_feat); 1335 1336 static const struct sysfs_ops f2fs_attr_ops = { 1337 .show = f2fs_attr_show, 1338 .store = f2fs_attr_store, 1339 }; 1340 1341 static const struct kobj_type f2fs_sb_ktype = { 1342 .default_groups = f2fs_groups, 1343 .sysfs_ops = &f2fs_attr_ops, 1344 .release = f2fs_sb_release, 1345 }; 1346 1347 static const struct kobj_type f2fs_ktype = { 1348 .sysfs_ops = &f2fs_attr_ops, 1349 }; 1350 1351 static struct kset f2fs_kset = { 1352 .kobj = {.ktype = &f2fs_ktype}, 1353 }; 1354 1355 static const struct kobj_type f2fs_feat_ktype = { 1356 .default_groups = f2fs_feat_groups, 1357 .sysfs_ops = &f2fs_attr_ops, 1358 }; 1359 1360 static struct kobject f2fs_feat = { 1361 .kset = &f2fs_kset, 1362 }; 1363 1364 static ssize_t f2fs_stat_attr_show(struct kobject *kobj, 1365 struct attribute *attr, char *buf) 1366 { 1367 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1368 s_stat_kobj); 1369 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1370 1371 return a->show ? a->show(a, sbi, buf) : 0; 1372 } 1373 1374 static ssize_t f2fs_stat_attr_store(struct kobject *kobj, struct attribute *attr, 1375 const char *buf, size_t len) 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->store ? a->store(a, sbi, buf, len) : 0; 1382 } 1383 1384 static void f2fs_stat_kobj_release(struct kobject *kobj) 1385 { 1386 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1387 s_stat_kobj); 1388 complete(&sbi->s_stat_kobj_unregister); 1389 } 1390 1391 static const struct sysfs_ops f2fs_stat_attr_ops = { 1392 .show = f2fs_stat_attr_show, 1393 .store = f2fs_stat_attr_store, 1394 }; 1395 1396 static const struct kobj_type f2fs_stat_ktype = { 1397 .default_groups = f2fs_stat_groups, 1398 .sysfs_ops = &f2fs_stat_attr_ops, 1399 .release = f2fs_stat_kobj_release, 1400 }; 1401 1402 static ssize_t f2fs_sb_feat_attr_show(struct kobject *kobj, 1403 struct attribute *attr, char *buf) 1404 { 1405 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1406 s_feature_list_kobj); 1407 struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); 1408 1409 return a->show ? a->show(a, sbi, buf) : 0; 1410 } 1411 1412 static void f2fs_feature_list_kobj_release(struct kobject *kobj) 1413 { 1414 struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, 1415 s_feature_list_kobj); 1416 complete(&sbi->s_feature_list_kobj_unregister); 1417 } 1418 1419 static const struct sysfs_ops f2fs_feature_list_attr_ops = { 1420 .show = f2fs_sb_feat_attr_show, 1421 }; 1422 1423 static const struct kobj_type f2fs_feature_list_ktype = { 1424 .default_groups = f2fs_sb_feat_groups, 1425 .sysfs_ops = &f2fs_feature_list_attr_ops, 1426 .release = f2fs_feature_list_kobj_release, 1427 }; 1428 1429 static int __maybe_unused segment_info_seq_show(struct seq_file *seq, 1430 void *offset) 1431 { 1432 struct super_block *sb = seq->private; 1433 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1434 unsigned int total_segs = 1435 le32_to_cpu(sbi->raw_super->segment_count_main); 1436 int i; 1437 1438 seq_puts(seq, "format: segment_type|valid_blocks\n" 1439 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1440 1441 for (i = 0; i < total_segs; i++) { 1442 struct seg_entry *se = get_seg_entry(sbi, i); 1443 1444 if ((i % 10) == 0) 1445 seq_printf(seq, "%-10d", i); 1446 seq_printf(seq, "%d|%-3u", se->type, se->valid_blocks); 1447 if ((i % 10) == 9 || i == (total_segs - 1)) 1448 seq_putc(seq, '\n'); 1449 else 1450 seq_putc(seq, ' '); 1451 } 1452 1453 return 0; 1454 } 1455 1456 static int __maybe_unused segment_bits_seq_show(struct seq_file *seq, 1457 void *offset) 1458 { 1459 struct super_block *sb = seq->private; 1460 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1461 unsigned int total_segs = 1462 le32_to_cpu(sbi->raw_super->segment_count_main); 1463 int i, j; 1464 1465 seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" 1466 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); 1467 1468 for (i = 0; i < total_segs; i++) { 1469 struct seg_entry *se = get_seg_entry(sbi, i); 1470 1471 seq_printf(seq, "%-10d", i); 1472 seq_printf(seq, "%d|%-3u|", se->type, se->valid_blocks); 1473 for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) 1474 seq_printf(seq, " %.2x", se->cur_valid_map[j]); 1475 seq_putc(seq, '\n'); 1476 } 1477 return 0; 1478 } 1479 1480 static int __maybe_unused victim_bits_seq_show(struct seq_file *seq, 1481 void *offset) 1482 { 1483 struct super_block *sb = seq->private; 1484 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1485 struct dirty_seglist_info *dirty_i = DIRTY_I(sbi); 1486 int i; 1487 1488 seq_puts(seq, "format: victim_secmap bitmaps\n"); 1489 1490 for (i = 0; i < MAIN_SECS(sbi); i++) { 1491 if ((i % 10) == 0) 1492 seq_printf(seq, "%-10d", i); 1493 seq_printf(seq, "%d", test_bit(i, dirty_i->victim_secmap) ? 1 : 0); 1494 if ((i % 10) == 9 || i == (MAIN_SECS(sbi) - 1)) 1495 seq_putc(seq, '\n'); 1496 else 1497 seq_putc(seq, ' '); 1498 } 1499 return 0; 1500 } 1501 1502 static int __maybe_unused discard_plist_seq_show(struct seq_file *seq, 1503 void *offset) 1504 { 1505 struct super_block *sb = seq->private; 1506 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1507 struct discard_cmd_control *dcc = SM_I(sbi)->dcc_info; 1508 int i, count; 1509 1510 seq_puts(seq, "Discard pend list(Show diacrd_cmd count on each entry, .:not exist):\n"); 1511 if (!f2fs_realtime_discard_enable(sbi)) 1512 return 0; 1513 1514 if (dcc) { 1515 mutex_lock(&dcc->cmd_lock); 1516 for (i = 0; i < MAX_PLIST_NUM; i++) { 1517 struct list_head *pend_list; 1518 struct discard_cmd *dc, *tmp; 1519 1520 if (i % 8 == 0) 1521 seq_printf(seq, " %-3d", i); 1522 count = 0; 1523 pend_list = &dcc->pend_list[i]; 1524 list_for_each_entry_safe(dc, tmp, pend_list, list) 1525 count++; 1526 if (count) 1527 seq_printf(seq, " %7d", count); 1528 else 1529 seq_puts(seq, " ."); 1530 if (i % 8 == 7) 1531 seq_putc(seq, '\n'); 1532 } 1533 seq_putc(seq, '\n'); 1534 mutex_unlock(&dcc->cmd_lock); 1535 } 1536 1537 return 0; 1538 } 1539 1540 static int __maybe_unused disk_map_seq_show(struct seq_file *seq, 1541 void *offset) 1542 { 1543 struct super_block *sb = seq->private; 1544 struct f2fs_sb_info *sbi = F2FS_SB(sb); 1545 int i; 1546 1547 seq_printf(seq, "Address Layout : %5luB Block address (# of Segments)\n", 1548 F2FS_BLKSIZE); 1549 seq_printf(seq, " SB : %12s\n", "0/1024B"); 1550 seq_printf(seq, " seg0_blkaddr : 0x%010x\n", SEG0_BLKADDR(sbi)); 1551 seq_printf(seq, " Checkpoint : 0x%010x (%10d)\n", 1552 le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr), 2); 1553 seq_printf(seq, " SIT : 0x%010x (%10d)\n", 1554 SIT_I(sbi)->sit_base_addr, 1555 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_sit)); 1556 seq_printf(seq, " NAT : 0x%010x (%10d)\n", 1557 NM_I(sbi)->nat_blkaddr, 1558 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_nat)); 1559 seq_printf(seq, " SSA : 0x%010x (%10d)\n", 1560 SM_I(sbi)->ssa_blkaddr, 1561 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_ssa)); 1562 seq_printf(seq, " Main : 0x%010x (%10d)\n", 1563 SM_I(sbi)->main_blkaddr, 1564 le32_to_cpu(F2FS_RAW_SUPER(sbi)->segment_count_main)); 1565 seq_printf(seq, " # of Sections : %12d\n", 1566 le32_to_cpu(F2FS_RAW_SUPER(sbi)->section_count)); 1567 seq_printf(seq, " Segs/Sections : %12d\n", 1568 SEGS_PER_SEC(sbi)); 1569 seq_printf(seq, " Section size : %12d MB\n", 1570 SEGS_PER_SEC(sbi) << 1); 1571 1572 if (!f2fs_is_multi_device(sbi)) 1573 return 0; 1574 1575 seq_puts(seq, "\nDisk Map for multi devices:\n"); 1576 for (i = 0; i < sbi->s_ndevs; i++) 1577 seq_printf(seq, "Disk:%2d (zoned=%d): 0x%010x - 0x%010x on %s\n", 1578 i, bdev_is_zoned(FDEV(i).bdev), 1579 FDEV(i).start_blk, FDEV(i).end_blk, 1580 FDEV(i).path); 1581 return 0; 1582 } 1583 1584 int __init f2fs_init_sysfs(void) 1585 { 1586 int ret; 1587 1588 kobject_set_name(&f2fs_kset.kobj, "f2fs"); 1589 f2fs_kset.kobj.parent = fs_kobj; 1590 ret = kset_register(&f2fs_kset); 1591 if (ret) 1592 return ret; 1593 1594 ret = kobject_init_and_add(&f2fs_feat, &f2fs_feat_ktype, 1595 NULL, "features"); 1596 if (ret) 1597 goto put_kobject; 1598 1599 f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); 1600 if (!f2fs_proc_root) { 1601 ret = -ENOMEM; 1602 goto put_kobject; 1603 } 1604 1605 return 0; 1606 put_kobject: 1607 kobject_put(&f2fs_feat); 1608 kset_unregister(&f2fs_kset); 1609 return ret; 1610 } 1611 1612 void f2fs_exit_sysfs(void) 1613 { 1614 kobject_put(&f2fs_feat); 1615 kset_unregister(&f2fs_kset); 1616 remove_proc_entry("fs/f2fs", NULL); 1617 f2fs_proc_root = NULL; 1618 } 1619 1620 int f2fs_register_sysfs(struct f2fs_sb_info *sbi) 1621 { 1622 struct super_block *sb = sbi->sb; 1623 int err; 1624 1625 sbi->s_kobj.kset = &f2fs_kset; 1626 init_completion(&sbi->s_kobj_unregister); 1627 err = kobject_init_and_add(&sbi->s_kobj, &f2fs_sb_ktype, NULL, 1628 "%s", sb->s_id); 1629 if (err) 1630 goto put_sb_kobj; 1631 1632 sbi->s_stat_kobj.kset = &f2fs_kset; 1633 init_completion(&sbi->s_stat_kobj_unregister); 1634 err = kobject_init_and_add(&sbi->s_stat_kobj, &f2fs_stat_ktype, 1635 &sbi->s_kobj, "stat"); 1636 if (err) 1637 goto put_stat_kobj; 1638 1639 sbi->s_feature_list_kobj.kset = &f2fs_kset; 1640 init_completion(&sbi->s_feature_list_kobj_unregister); 1641 err = kobject_init_and_add(&sbi->s_feature_list_kobj, 1642 &f2fs_feature_list_ktype, 1643 &sbi->s_kobj, "feature_list"); 1644 if (err) 1645 goto put_feature_list_kobj; 1646 1647 sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); 1648 if (!sbi->s_proc) { 1649 err = -ENOMEM; 1650 goto put_feature_list_kobj; 1651 } 1652 1653 proc_create_single_data("segment_info", 0444, sbi->s_proc, 1654 segment_info_seq_show, sb); 1655 proc_create_single_data("segment_bits", 0444, sbi->s_proc, 1656 segment_bits_seq_show, sb); 1657 #ifdef CONFIG_F2FS_IOSTAT 1658 proc_create_single_data("iostat_info", 0444, sbi->s_proc, 1659 iostat_info_seq_show, sb); 1660 #endif 1661 proc_create_single_data("victim_bits", 0444, sbi->s_proc, 1662 victim_bits_seq_show, sb); 1663 proc_create_single_data("discard_plist_info", 0444, sbi->s_proc, 1664 discard_plist_seq_show, sb); 1665 proc_create_single_data("disk_map", 0444, sbi->s_proc, 1666 disk_map_seq_show, sb); 1667 return 0; 1668 put_feature_list_kobj: 1669 kobject_put(&sbi->s_feature_list_kobj); 1670 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1671 put_stat_kobj: 1672 kobject_put(&sbi->s_stat_kobj); 1673 wait_for_completion(&sbi->s_stat_kobj_unregister); 1674 put_sb_kobj: 1675 kobject_put(&sbi->s_kobj); 1676 wait_for_completion(&sbi->s_kobj_unregister); 1677 return err; 1678 } 1679 1680 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi) 1681 { 1682 remove_proc_subtree(sbi->sb->s_id, f2fs_proc_root); 1683 1684 kobject_put(&sbi->s_stat_kobj); 1685 wait_for_completion(&sbi->s_stat_kobj_unregister); 1686 kobject_put(&sbi->s_feature_list_kobj); 1687 wait_for_completion(&sbi->s_feature_list_kobj_unregister); 1688 1689 kobject_put(&sbi->s_kobj); 1690 wait_for_completion(&sbi->s_kobj_unregister); 1691 } 1692