1 /* 2 * fs/f2fs/inode.c 3 * 4 * Copyright (c) 2012 Samsung Electronics Co., Ltd. 5 * http://www.samsung.com/ 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 #include <linux/fs.h> 12 #include <linux/f2fs_fs.h> 13 #include <linux/buffer_head.h> 14 #include <linux/backing-dev.h> 15 #include <linux/writeback.h> 16 17 #include "f2fs.h" 18 #include "node.h" 19 #include "segment.h" 20 21 #include <trace/events/f2fs.h> 22 23 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync) 24 { 25 if (is_inode_flag_set(inode, FI_NEW_INODE)) 26 return; 27 28 if (f2fs_inode_dirtied(inode, sync)) 29 return; 30 31 mark_inode_dirty_sync(inode); 32 } 33 34 void f2fs_set_inode_flags(struct inode *inode) 35 { 36 unsigned int flags = F2FS_I(inode)->i_flags; 37 unsigned int new_fl = 0; 38 39 if (flags & FS_SYNC_FL) 40 new_fl |= S_SYNC; 41 if (flags & FS_APPEND_FL) 42 new_fl |= S_APPEND; 43 if (flags & FS_IMMUTABLE_FL) 44 new_fl |= S_IMMUTABLE; 45 if (flags & FS_NOATIME_FL) 46 new_fl |= S_NOATIME; 47 if (flags & FS_DIRSYNC_FL) 48 new_fl |= S_DIRSYNC; 49 if (f2fs_encrypted_inode(inode)) 50 new_fl |= S_ENCRYPTED; 51 inode_set_flags(inode, new_fl, 52 S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC| 53 S_ENCRYPTED); 54 } 55 56 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri) 57 { 58 int extra_size = get_extra_isize(inode); 59 60 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 61 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 62 if (ri->i_addr[extra_size]) 63 inode->i_rdev = old_decode_dev( 64 le32_to_cpu(ri->i_addr[extra_size])); 65 else 66 inode->i_rdev = new_decode_dev( 67 le32_to_cpu(ri->i_addr[extra_size + 1])); 68 } 69 } 70 71 static bool __written_first_block(struct f2fs_inode *ri) 72 { 73 block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]); 74 75 if (addr != NEW_ADDR && addr != NULL_ADDR) 76 return true; 77 return false; 78 } 79 80 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri) 81 { 82 int extra_size = get_extra_isize(inode); 83 84 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) { 85 if (old_valid_dev(inode->i_rdev)) { 86 ri->i_addr[extra_size] = 87 cpu_to_le32(old_encode_dev(inode->i_rdev)); 88 ri->i_addr[extra_size + 1] = 0; 89 } else { 90 ri->i_addr[extra_size] = 0; 91 ri->i_addr[extra_size + 1] = 92 cpu_to_le32(new_encode_dev(inode->i_rdev)); 93 ri->i_addr[extra_size + 2] = 0; 94 } 95 } 96 } 97 98 static void __recover_inline_status(struct inode *inode, struct page *ipage) 99 { 100 void *inline_data = inline_data_addr(inode, ipage); 101 __le32 *start = inline_data; 102 __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32); 103 104 while (start < end) { 105 if (*start++) { 106 f2fs_wait_on_page_writeback(ipage, NODE, true); 107 108 set_inode_flag(inode, FI_DATA_EXIST); 109 set_raw_inline(inode, F2FS_INODE(ipage)); 110 set_page_dirty(ipage); 111 return; 112 } 113 } 114 return; 115 } 116 117 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 118 { 119 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 120 int extra_isize = le32_to_cpu(ri->i_extra_isize); 121 122 if (!f2fs_sb_has_inode_chksum(sbi->sb)) 123 return false; 124 125 if (!RAW_IS_INODE(F2FS_NODE(page)) || !(ri->i_inline & F2FS_EXTRA_ATTR)) 126 return false; 127 128 if (!F2FS_FITS_IN_INODE(ri, extra_isize, i_inode_checksum)) 129 return false; 130 131 return true; 132 } 133 134 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page) 135 { 136 struct f2fs_node *node = F2FS_NODE(page); 137 struct f2fs_inode *ri = &node->i; 138 __le32 ino = node->footer.ino; 139 __le32 gen = ri->i_generation; 140 __u32 chksum, chksum_seed; 141 __u32 dummy_cs = 0; 142 unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum); 143 unsigned int cs_size = sizeof(dummy_cs); 144 145 chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino, 146 sizeof(ino)); 147 chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen)); 148 149 chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset); 150 chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size); 151 offset += cs_size; 152 chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset, 153 F2FS_BLKSIZE - offset); 154 return chksum; 155 } 156 157 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page) 158 { 159 struct f2fs_inode *ri; 160 __u32 provided, calculated; 161 162 if (!f2fs_enable_inode_chksum(sbi, page) || 163 PageDirty(page) || PageWriteback(page)) 164 return true; 165 166 ri = &F2FS_NODE(page)->i; 167 provided = le32_to_cpu(ri->i_inode_checksum); 168 calculated = f2fs_inode_chksum(sbi, page); 169 170 if (provided != calculated) 171 f2fs_msg(sbi->sb, KERN_WARNING, 172 "checksum invalid, ino = %x, %x vs. %x", 173 ino_of_node(page), provided, calculated); 174 175 return provided == calculated; 176 } 177 178 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page) 179 { 180 struct f2fs_inode *ri = &F2FS_NODE(page)->i; 181 182 if (!f2fs_enable_inode_chksum(sbi, page)) 183 return; 184 185 ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page)); 186 } 187 188 static int do_read_inode(struct inode *inode) 189 { 190 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 191 struct f2fs_inode_info *fi = F2FS_I(inode); 192 struct page *node_page; 193 struct f2fs_inode *ri; 194 projid_t i_projid; 195 196 /* Check if ino is within scope */ 197 if (check_nid_range(sbi, inode->i_ino)) { 198 f2fs_msg(inode->i_sb, KERN_ERR, "bad inode number: %lu", 199 (unsigned long) inode->i_ino); 200 WARN_ON(1); 201 return -EINVAL; 202 } 203 204 node_page = get_node_page(sbi, inode->i_ino); 205 if (IS_ERR(node_page)) 206 return PTR_ERR(node_page); 207 208 ri = F2FS_INODE(node_page); 209 210 inode->i_mode = le16_to_cpu(ri->i_mode); 211 i_uid_write(inode, le32_to_cpu(ri->i_uid)); 212 i_gid_write(inode, le32_to_cpu(ri->i_gid)); 213 set_nlink(inode, le32_to_cpu(ri->i_links)); 214 inode->i_size = le64_to_cpu(ri->i_size); 215 inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1); 216 217 inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime); 218 inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime); 219 inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime); 220 inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec); 221 inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec); 222 inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec); 223 inode->i_generation = le32_to_cpu(ri->i_generation); 224 225 fi->i_current_depth = le32_to_cpu(ri->i_current_depth); 226 fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid); 227 fi->i_flags = le32_to_cpu(ri->i_flags); 228 fi->flags = 0; 229 fi->i_advise = ri->i_advise; 230 fi->i_pino = le32_to_cpu(ri->i_pino); 231 fi->i_dir_level = ri->i_dir_level; 232 233 if (f2fs_init_extent_tree(inode, &ri->i_ext)) 234 set_page_dirty(node_page); 235 236 get_inline_info(inode, ri); 237 238 fi->i_extra_isize = f2fs_has_extra_attr(inode) ? 239 le16_to_cpu(ri->i_extra_isize) : 0; 240 241 if (f2fs_sb_has_flexible_inline_xattr(sbi->sb)) { 242 f2fs_bug_on(sbi, !f2fs_has_extra_attr(inode)); 243 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); 244 } else if (f2fs_has_inline_xattr(inode) || 245 f2fs_has_inline_dentry(inode)) { 246 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS; 247 } else { 248 249 /* 250 * Previous inline data or directory always reserved 200 bytes 251 * in inode layout, even if inline_xattr is disabled. In order 252 * to keep inline_dentry's structure for backward compatibility, 253 * we get the space back only from inline_data. 254 */ 255 fi->i_inline_xattr_size = 0; 256 } 257 258 /* check data exist */ 259 if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode)) 260 __recover_inline_status(inode, node_page); 261 262 /* get rdev by using inline_info */ 263 __get_inode_rdev(inode, ri); 264 265 if (__written_first_block(ri)) 266 set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN); 267 268 if (!need_inode_block_update(sbi, inode->i_ino)) 269 fi->last_disk_size = inode->i_size; 270 271 if (fi->i_flags & FS_PROJINHERIT_FL) 272 set_inode_flag(inode, FI_PROJ_INHERIT); 273 274 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi->sb) && 275 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid)) 276 i_projid = (projid_t)le32_to_cpu(ri->i_projid); 277 else 278 i_projid = F2FS_DEF_PROJID; 279 fi->i_projid = make_kprojid(&init_user_ns, i_projid); 280 281 if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi->sb) && 282 F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) { 283 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime); 284 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec); 285 } 286 287 f2fs_put_page(node_page, 1); 288 289 stat_inc_inline_xattr(inode); 290 stat_inc_inline_inode(inode); 291 stat_inc_inline_dir(inode); 292 293 return 0; 294 } 295 296 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino) 297 { 298 struct f2fs_sb_info *sbi = F2FS_SB(sb); 299 struct inode *inode; 300 int ret = 0; 301 302 inode = iget_locked(sb, ino); 303 if (!inode) 304 return ERR_PTR(-ENOMEM); 305 306 if (!(inode->i_state & I_NEW)) { 307 trace_f2fs_iget(inode); 308 return inode; 309 } 310 if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi)) 311 goto make_now; 312 313 ret = do_read_inode(inode); 314 if (ret) 315 goto bad_inode; 316 make_now: 317 if (ino == F2FS_NODE_INO(sbi)) { 318 inode->i_mapping->a_ops = &f2fs_node_aops; 319 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); 320 } else if (ino == F2FS_META_INO(sbi)) { 321 inode->i_mapping->a_ops = &f2fs_meta_aops; 322 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_ZERO); 323 } else if (S_ISREG(inode->i_mode)) { 324 inode->i_op = &f2fs_file_inode_operations; 325 inode->i_fop = &f2fs_file_operations; 326 inode->i_mapping->a_ops = &f2fs_dblock_aops; 327 } else if (S_ISDIR(inode->i_mode)) { 328 inode->i_op = &f2fs_dir_inode_operations; 329 inode->i_fop = &f2fs_dir_operations; 330 inode->i_mapping->a_ops = &f2fs_dblock_aops; 331 mapping_set_gfp_mask(inode->i_mapping, GFP_F2FS_HIGH_ZERO); 332 } else if (S_ISLNK(inode->i_mode)) { 333 if (f2fs_encrypted_inode(inode)) 334 inode->i_op = &f2fs_encrypted_symlink_inode_operations; 335 else 336 inode->i_op = &f2fs_symlink_inode_operations; 337 inode_nohighmem(inode); 338 inode->i_mapping->a_ops = &f2fs_dblock_aops; 339 } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) || 340 S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) { 341 inode->i_op = &f2fs_special_inode_operations; 342 init_special_inode(inode, inode->i_mode, inode->i_rdev); 343 } else { 344 ret = -EIO; 345 goto bad_inode; 346 } 347 f2fs_set_inode_flags(inode); 348 unlock_new_inode(inode); 349 trace_f2fs_iget(inode); 350 return inode; 351 352 bad_inode: 353 iget_failed(inode); 354 trace_f2fs_iget_exit(inode, ret); 355 return ERR_PTR(ret); 356 } 357 358 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino) 359 { 360 struct inode *inode; 361 retry: 362 inode = f2fs_iget(sb, ino); 363 if (IS_ERR(inode)) { 364 if (PTR_ERR(inode) == -ENOMEM) { 365 congestion_wait(BLK_RW_ASYNC, HZ/50); 366 goto retry; 367 } 368 } 369 return inode; 370 } 371 372 void update_inode(struct inode *inode, struct page *node_page) 373 { 374 struct f2fs_inode *ri; 375 struct extent_tree *et = F2FS_I(inode)->extent_tree; 376 377 f2fs_wait_on_page_writeback(node_page, NODE, true); 378 set_page_dirty(node_page); 379 380 f2fs_inode_synced(inode); 381 382 ri = F2FS_INODE(node_page); 383 384 ri->i_mode = cpu_to_le16(inode->i_mode); 385 ri->i_advise = F2FS_I(inode)->i_advise; 386 ri->i_uid = cpu_to_le32(i_uid_read(inode)); 387 ri->i_gid = cpu_to_le32(i_gid_read(inode)); 388 ri->i_links = cpu_to_le32(inode->i_nlink); 389 ri->i_size = cpu_to_le64(i_size_read(inode)); 390 ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1); 391 392 if (et) { 393 read_lock(&et->lock); 394 set_raw_extent(&et->largest, &ri->i_ext); 395 read_unlock(&et->lock); 396 } else { 397 memset(&ri->i_ext, 0, sizeof(ri->i_ext)); 398 } 399 set_raw_inline(inode, ri); 400 401 ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec); 402 ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec); 403 ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec); 404 ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec); 405 ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec); 406 ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec); 407 ri->i_current_depth = cpu_to_le32(F2FS_I(inode)->i_current_depth); 408 ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid); 409 ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags); 410 ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino); 411 ri->i_generation = cpu_to_le32(inode->i_generation); 412 ri->i_dir_level = F2FS_I(inode)->i_dir_level; 413 414 if (f2fs_has_extra_attr(inode)) { 415 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize); 416 417 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)->sb)) 418 ri->i_inline_xattr_size = 419 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size); 420 421 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)->sb) && 422 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 423 i_projid)) { 424 projid_t i_projid; 425 426 i_projid = from_kprojid(&init_user_ns, 427 F2FS_I(inode)->i_projid); 428 ri->i_projid = cpu_to_le32(i_projid); 429 } 430 431 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)->sb) && 432 F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize, 433 i_crtime)) { 434 ri->i_crtime = 435 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec); 436 ri->i_crtime_nsec = 437 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec); 438 } 439 } 440 441 __set_inode_rdev(inode, ri); 442 set_cold_node(inode, node_page); 443 444 /* deleted inode */ 445 if (inode->i_nlink == 0) 446 clear_inline_node(node_page); 447 448 } 449 450 void update_inode_page(struct inode *inode) 451 { 452 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 453 struct page *node_page; 454 retry: 455 node_page = get_node_page(sbi, inode->i_ino); 456 if (IS_ERR(node_page)) { 457 int err = PTR_ERR(node_page); 458 if (err == -ENOMEM) { 459 cond_resched(); 460 goto retry; 461 } else if (err != -ENOENT) { 462 f2fs_stop_checkpoint(sbi, false); 463 } 464 return; 465 } 466 update_inode(inode, node_page); 467 f2fs_put_page(node_page, 1); 468 } 469 470 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc) 471 { 472 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 473 474 if (inode->i_ino == F2FS_NODE_INO(sbi) || 475 inode->i_ino == F2FS_META_INO(sbi)) 476 return 0; 477 478 if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) 479 return 0; 480 481 /* 482 * We need to balance fs here to prevent from producing dirty node pages 483 * during the urgent cleaning time when runing out of free sections. 484 */ 485 update_inode_page(inode); 486 if (wbc && wbc->nr_to_write) 487 f2fs_balance_fs(sbi, true); 488 return 0; 489 } 490 491 /* 492 * Called at the last iput() if i_nlink is zero 493 */ 494 void f2fs_evict_inode(struct inode *inode) 495 { 496 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 497 nid_t xnid = F2FS_I(inode)->i_xattr_nid; 498 int err = 0; 499 500 /* some remained atomic pages should discarded */ 501 if (f2fs_is_atomic_file(inode)) 502 drop_inmem_pages(inode); 503 504 trace_f2fs_evict_inode(inode); 505 truncate_inode_pages_final(&inode->i_data); 506 507 if (inode->i_ino == F2FS_NODE_INO(sbi) || 508 inode->i_ino == F2FS_META_INO(sbi)) 509 goto out_clear; 510 511 f2fs_bug_on(sbi, get_dirty_pages(inode)); 512 remove_dirty_inode(inode); 513 514 f2fs_destroy_extent_tree(inode); 515 516 if (inode->i_nlink || is_bad_inode(inode)) 517 goto no_delete; 518 519 dquot_initialize(inode); 520 521 remove_ino_entry(sbi, inode->i_ino, APPEND_INO); 522 remove_ino_entry(sbi, inode->i_ino, UPDATE_INO); 523 remove_ino_entry(sbi, inode->i_ino, FLUSH_INO); 524 525 sb_start_intwrite(inode->i_sb); 526 set_inode_flag(inode, FI_NO_ALLOC); 527 i_size_write(inode, 0); 528 retry: 529 if (F2FS_HAS_BLOCKS(inode)) 530 err = f2fs_truncate(inode); 531 532 #ifdef CONFIG_F2FS_FAULT_INJECTION 533 if (time_to_inject(sbi, FAULT_EVICT_INODE)) { 534 f2fs_show_injection_info(FAULT_EVICT_INODE); 535 err = -EIO; 536 } 537 #endif 538 if (!err) { 539 f2fs_lock_op(sbi); 540 err = remove_inode_page(inode); 541 f2fs_unlock_op(sbi); 542 if (err == -ENOENT) 543 err = 0; 544 } 545 546 /* give more chances, if ENOMEM case */ 547 if (err == -ENOMEM) { 548 err = 0; 549 goto retry; 550 } 551 552 if (err) 553 update_inode_page(inode); 554 dquot_free_inode(inode); 555 sb_end_intwrite(inode->i_sb); 556 no_delete: 557 dquot_drop(inode); 558 559 stat_dec_inline_xattr(inode); 560 stat_dec_inline_dir(inode); 561 stat_dec_inline_inode(inode); 562 563 if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG))) 564 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE)); 565 else 566 f2fs_inode_synced(inode); 567 568 /* ino == 0, if f2fs_new_inode() was failed t*/ 569 if (inode->i_ino) 570 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino, 571 inode->i_ino); 572 if (xnid) 573 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid); 574 if (inode->i_nlink) { 575 if (is_inode_flag_set(inode, FI_APPEND_WRITE)) 576 add_ino_entry(sbi, inode->i_ino, APPEND_INO); 577 if (is_inode_flag_set(inode, FI_UPDATE_WRITE)) 578 add_ino_entry(sbi, inode->i_ino, UPDATE_INO); 579 } 580 if (is_inode_flag_set(inode, FI_FREE_NID)) { 581 alloc_nid_failed(sbi, inode->i_ino); 582 clear_inode_flag(inode, FI_FREE_NID); 583 } else { 584 f2fs_bug_on(sbi, err && 585 !exist_written_data(sbi, inode->i_ino, ORPHAN_INO)); 586 } 587 out_clear: 588 fscrypt_put_encryption_info(inode); 589 clear_inode(inode); 590 } 591 592 /* caller should call f2fs_lock_op() */ 593 void handle_failed_inode(struct inode *inode) 594 { 595 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 596 struct node_info ni; 597 598 /* 599 * clear nlink of inode in order to release resource of inode 600 * immediately. 601 */ 602 clear_nlink(inode); 603 604 /* 605 * we must call this to avoid inode being remained as dirty, resulting 606 * in a panic when flushing dirty inodes in gdirty_list. 607 */ 608 update_inode_page(inode); 609 f2fs_inode_synced(inode); 610 611 /* don't make bad inode, since it becomes a regular file. */ 612 unlock_new_inode(inode); 613 614 /* 615 * Note: we should add inode to orphan list before f2fs_unlock_op() 616 * so we can prevent losing this orphan when encoutering checkpoint 617 * and following suddenly power-off. 618 */ 619 get_node_info(sbi, inode->i_ino, &ni); 620 621 if (ni.blk_addr != NULL_ADDR) { 622 int err = acquire_orphan_inode(sbi); 623 if (err) { 624 set_sbi_flag(sbi, SBI_NEED_FSCK); 625 f2fs_msg(sbi->sb, KERN_WARNING, 626 "Too many orphan inodes, run fsck to fix."); 627 } else { 628 add_orphan_inode(inode); 629 } 630 alloc_nid_done(sbi, inode->i_ino); 631 } else { 632 set_inode_flag(inode, FI_FREE_NID); 633 } 634 635 f2fs_unlock_op(sbi); 636 637 /* iput will drop the inode object */ 638 iput(inode); 639 } 640