fs/f2fs/inline.c

   1 /*
   2  * fs/f2fs/inline.c
   3  * Copyright (c) 2013, Intel Corporation
   4  * Authors: Huajun Li <huajun.li@intel.com>
   5  *          Haicheng Li <haicheng.li@intel.com>
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10
  11 #include <linux/fs.h>
  12 #include <linux/f2fs_fs.h>
  13
  14 #include "f2fs.h"
  15 #include "node.h"
  16
  17 bool f2fs_may_inline_data(struct inode *inode)
  18 {
  19         if (f2fs_is_atomic_file(inode))
  20                 return false;
  21
  22         if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
  23                 return false;
  24
  25         if (i_size_read(inode) > MAX_INLINE_DATA)
  26                 return false;
  27
  28         if (f2fs_encrypted_inode(inode) && S_ISREG(inode->i_mode))
  29                 return false;
  30
  31         return true;
  32 }
  33
  34 bool f2fs_may_inline_dentry(struct inode *inode)
  35 {
  36         if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
  37                 return false;
  38
  39         if (!S_ISDIR(inode->i_mode))
  40                 return false;
  41
  42         return true;
  43 }
  44
  45 void read_inline_data(struct page *page, struct page *ipage)
  46 {
  47         void *src_addr, *dst_addr;
  48
  49         if (PageUptodate(page))
  50                 return;
  51
  52         f2fs_bug_on(F2FS_P_SB(page), page->index);
  53
  54         zero_user_segment(page, MAX_INLINE_DATA, PAGE_SIZE);
  55
  56         /* Copy the whole inline data block */
  57         src_addr = inline_data_addr(ipage);
  58         dst_addr = kmap_atomic(page);
  59         memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
  60         flush_dcache_page(page);
  61         kunmap_atomic(dst_addr);
  62         if (!PageUptodate(page))
  63                 SetPageUptodate(page);
  64 }
  65
  66 bool truncate_inline_inode(struct page *ipage, u64 from)
  67 {
  68         void *addr;
  69
  70         if (from >= MAX_INLINE_DATA)
  71                 return false;
  72
  73         addr = inline_data_addr(ipage);
  74
  75         f2fs_wait_on_page_writeback(ipage, NODE, true);
  76         memset(addr + from, 0, MAX_INLINE_DATA - from);
  77         set_page_dirty(ipage);
  78         return true;
  79 }
  80
  81 int f2fs_read_inline_data(struct inode *inode, struct page *page)
  82 {
  83         struct page *ipage;
  84
  85         ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino);
  86         if (IS_ERR(ipage)) {
  87                 unlock_page(page);
  88                 return PTR_ERR(ipage);
  89         }
  90
  91         if (!f2fs_has_inline_data(inode)) {
  92                 f2fs_put_page(ipage, 1);
  93                 return -EAGAIN;
  94         }
  95
  96         if (page->index)
  97                 zero_user_segment(page, 0, PAGE_SIZE);
  98         else
  99                 read_inline_data(page, ipage);
 100
 101         if (!PageUptodate(page))
 102                 SetPageUptodate(page);
 103         f2fs_put_page(ipage, 1);
 104         unlock_page(page);
 105         return 0;
 106 }
 107
 108 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
 109 {
 110         struct f2fs_io_info fio = {
 111                 .sbi = F2FS_I_SB(dn->inode),
 112                 .type = DATA,
 113                 .op = REQ_OP_WRITE,
 114                 .op_flags = WRITE_SYNC | REQ_PRIO,
 115                 .page = page,
 116                 .encrypted_page = NULL,
 117         };
 118         int dirty, err;
 119
 120         if (!f2fs_exist_data(dn->inode))
 121                 goto clear_out;
 122
 123         err = f2fs_reserve_block(dn, 0);
 124         if (err)
 125                 return err;
 126
 127         f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
 128
 129         read_inline_data(page, dn->inode_page);
 130         set_page_dirty(page);
 131
 132         /* clear dirty state */
 133         dirty = clear_page_dirty_for_io(page);
 134
 135         /* write data page to try to make data consistent */
 136         set_page_writeback(page);
 137         fio.old_blkaddr = dn->data_blkaddr;
 138         write_data_page(dn, &fio);
 139         f2fs_wait_on_page_writeback(page, DATA, true);
 140         if (dirty)
 141                 inode_dec_dirty_pages(dn->inode);
 142
 143         /* this converted inline_data should be recovered. */
 144         set_inode_flag(dn->inode, FI_APPEND_WRITE);
 145
 146         /* clear inline data and flag after data writeback */
 147         truncate_inline_inode(dn->inode_page, 0);
 148         clear_inline_node(dn->inode_page);
 149 clear_out:
 150         stat_dec_inline_inode(dn->inode);
 151         f2fs_clear_inline_inode(dn->inode);
 152         f2fs_put_dnode(dn);
 153         return 0;
 154 }
 155
 156 int f2fs_convert_inline_inode(struct inode *inode)
 157 {
 158         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 159         struct dnode_of_data dn;
 160         struct page *ipage, *page;
 161         int err = 0;
 162
 163         if (!f2fs_has_inline_data(inode))
 164                 return 0;
 165
 166         page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
 167         if (!page)
 168                 return -ENOMEM;
 169
 170         f2fs_lock_op(sbi);
 171
 172         ipage = get_node_page(sbi, inode->i_ino);
 173         if (IS_ERR(ipage)) {
 174                 err = PTR_ERR(ipage);
 175                 goto out;
 176         }
 177
 178         set_new_dnode(&dn, inode, ipage, ipage, 0);
 179
 180         if (f2fs_has_inline_data(inode))
 181                 err = f2fs_convert_inline_page(&dn, page);
 182
 183         f2fs_put_dnode(&dn);
 184 out:
 185         f2fs_unlock_op(sbi);
 186
 187         f2fs_put_page(page, 1);
 188
 189         f2fs_balance_fs(sbi, dn.node_changed);
 190
 191         return err;
 192 }
 193
 194 int f2fs_write_inline_data(struct inode *inode, struct page *page)
 195 {
 196         void *src_addr, *dst_addr;
 197         struct dnode_of_data dn;
 198         int err;
 199
 200         set_new_dnode(&dn, inode, NULL, NULL, 0);
 201         err = get_dnode_of_data(&dn, 0, LOOKUP_NODE);
 202         if (err)
 203                 return err;
 204
 205         if (!f2fs_has_inline_data(inode)) {
 206                 f2fs_put_dnode(&dn);
 207                 return -EAGAIN;
 208         }
 209
 210         f2fs_bug_on(F2FS_I_SB(inode), page->index);
 211
 212         f2fs_wait_on_page_writeback(dn.inode_page, NODE, true);
 213         src_addr = kmap_atomic(page);
 214         dst_addr = inline_data_addr(dn.inode_page);
 215         memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
 216         kunmap_atomic(src_addr);
 217         set_page_dirty(dn.inode_page);
 218
 219         set_inode_flag(inode, FI_APPEND_WRITE);
 220         set_inode_flag(inode, FI_DATA_EXIST);
 221
 222         clear_inline_node(dn.inode_page);
 223         f2fs_put_dnode(&dn);
 224         return 0;
 225 }
 226
 227 bool recover_inline_data(struct inode *inode, struct page *npage)
 228 {
 229         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
 230         struct f2fs_inode *ri = NULL;
 231         void *src_addr, *dst_addr;
 232         struct page *ipage;
 233
 234         /*
 235          * The inline_data recovery policy is as follows.
 236          * [prev.] [next] of inline_data flag
 237          *    o       o  -> recover inline_data
 238          *    o       x  -> remove inline_data, and then recover data blocks
 239          *    x       o  -> remove inline_data, and then recover inline_data
 240          *    x       x  -> recover data blocks
 241          */
 242         if (IS_INODE(npage))
 243                 ri = F2FS_INODE(npage);
 244
 245         if (f2fs_has_inline_data(inode) &&
 246                         ri && (ri->i_inline & F2FS_INLINE_DATA)) {
 247 process_inline:
 248                 ipage = get_node_page(sbi, inode->i_ino);
 249                 f2fs_bug_on(sbi, IS_ERR(ipage));
 250
 251                 f2fs_wait_on_page_writeback(ipage, NODE, true);
 252
 253                 src_addr = inline_data_addr(npage);
 254                 dst_addr = inline_data_addr(ipage);
 255                 memcpy(dst_addr, src_addr, MAX_INLINE_DATA);
 256
 257                 set_inode_flag(inode, FI_INLINE_DATA);
 258                 set_inode_flag(inode, FI_DATA_EXIST);
 259
 260                 set_page_dirty(ipage);
 261                 f2fs_put_page(ipage, 1);
 262                 return true;
 263         }
 264
 265         if (f2fs_has_inline_data(inode)) {
 266                 ipage = get_node_page(sbi, inode->i_ino);
 267                 f2fs_bug_on(sbi, IS_ERR(ipage));
 268                 if (!truncate_inline_inode(ipage, 0))
 269                         return false;
 270                 f2fs_clear_inline_inode(inode);
 271                 f2fs_put_page(ipage, 1);
 272         } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
 273                 if (truncate_blocks(inode, 0, false))
 274                         return false;
 275                 goto process_inline;
 276         }
 277         return false;
 278 }
 279
 280 struct f2fs_dir_entry *find_in_inline_dir(struct inode *dir,
 281                         struct fscrypt_name *fname, struct page **res_page)
 282 {
 283         struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
 284         struct f2fs_inline_dentry *inline_dentry;
 285         struct qstr name = FSTR_TO_QSTR(&fname->disk_name);
 286         struct f2fs_dir_entry *de;
 287         struct f2fs_dentry_ptr d;
 288         struct page *ipage;
 289         f2fs_hash_t namehash;
 290
 291         ipage = get_node_page(sbi, dir->i_ino);
 292         if (IS_ERR(ipage)) {
 293                 *res_page = ipage;
 294                 return NULL;
 295         }
 296
 297         namehash = f2fs_dentry_hash(&name);
 298
 299         inline_dentry = inline_data_addr(ipage);
 300
 301         make_dentry_ptr(NULL, &d, (void *)inline_dentry, 2);
 302         de = find_target_dentry(fname, namehash, NULL, &d);
 303         unlock_page(ipage);
 304         if (de)
 305                 *res_page = ipage;
 306         else
 307                 f2fs_put_page(ipage, 0);
 308
 309         return de;
 310 }
 311
 312 int make_empty_inline_dir(struct inode *inode, struct inode *parent,
 313                                                         struct page *ipage)
 314 {
 315         struct f2fs_inline_dentry *dentry_blk;
 316         struct f2fs_dentry_ptr d;
 317
 318         dentry_blk = inline_data_addr(ipage);
 319
 320         make_dentry_ptr(NULL, &d, (void *)dentry_blk, 2);
 321         do_make_empty_dir(inode, parent, &d);
 322
 323         set_page_dirty(ipage);
 324
 325         /* update i_size to MAX_INLINE_DATA */
 326         if (i_size_read(inode) < MAX_INLINE_DATA)
 327                 f2fs_i_size_write(inode, MAX_INLINE_DATA);
 328         return 0;
 329 }
 330
 331 /*
 332  * NOTE: ipage is grabbed by caller, but if any error occurs, we should
 333  * release ipage in this function.
 334  */
 335 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
 336                                 struct f2fs_inline_dentry *inline_dentry)
 337 {
 338         struct page *page;
 339         struct dnode_of_data dn;
 340         struct f2fs_dentry_block *dentry_blk;
 341         int err;
 342
 343         page = f2fs_grab_cache_page(dir->i_mapping, 0, false);
 344         if (!page) {
 345                 f2fs_put_page(ipage, 1);
 346                 return -ENOMEM;
 347         }
 348
 349         set_new_dnode(&dn, dir, ipage, NULL, 0);
 350         err = f2fs_reserve_block(&dn, 0);
 351         if (err)
 352                 goto out;
 353
 354         f2fs_wait_on_page_writeback(page, DATA, true);
 355         zero_user_segment(page, MAX_INLINE_DATA, PAGE_SIZE);
 356
 357         dentry_blk = kmap_atomic(page);
 358
 359         /* copy data from inline dentry block to new dentry block */
 360         memcpy(dentry_blk->dentry_bitmap, inline_dentry->dentry_bitmap,
 361                                         INLINE_DENTRY_BITMAP_SIZE);
 362         memset(dentry_blk->dentry_bitmap + INLINE_DENTRY_BITMAP_SIZE, 0,
 363                         SIZE_OF_DENTRY_BITMAP - INLINE_DENTRY_BITMAP_SIZE);
 364         /*
 365          * we do not need to zero out remainder part of dentry and filename
 366          * field, since we have used bitmap for marking the usage status of
 367          * them, besides, we can also ignore copying/zeroing reserved space
 368          * of dentry block, because them haven't been used so far.
 369          */
 370         memcpy(dentry_blk->dentry, inline_dentry->dentry,
 371                         sizeof(struct f2fs_dir_entry) * NR_INLINE_DENTRY);
 372         memcpy(dentry_blk->filename, inline_dentry->filename,
 373                                         NR_INLINE_DENTRY * F2FS_SLOT_LEN);
 374
 375         kunmap_atomic(dentry_blk);
 376         if (!PageUptodate(page))
 377                 SetPageUptodate(page);
 378         set_page_dirty(page);
 379
 380         /* clear inline dir and flag after data writeback */
 381         truncate_inline_inode(ipage, 0);
 382
 383         stat_dec_inline_dir(dir);
 384         clear_inode_flag(dir, FI_INLINE_DENTRY);
 385
 386         f2fs_i_depth_write(dir, 1);
 387         if (i_size_read(dir) < PAGE_SIZE)
 388                 f2fs_i_size_write(dir, PAGE_SIZE);
 389 out:
 390         f2fs_put_page(page, 1);
 391         return err;
 392 }
 393
 394 static int f2fs_add_inline_entries(struct inode *dir,
 395                         struct f2fs_inline_dentry *inline_dentry)
 396 {
 397         struct f2fs_dentry_ptr d;
 398         unsigned long bit_pos = 0;
 399         int err = 0;
 400
 401         make_dentry_ptr(NULL, &d, (void *)inline_dentry, 2);
 402
 403         while (bit_pos < d.max) {
 404                 struct f2fs_dir_entry *de;
 405                 struct qstr new_name;
 406                 nid_t ino;
 407                 umode_t fake_mode;
 408
 409                 if (!test_bit_le(bit_pos, d.bitmap)) {
 410                         bit_pos++;
 411                         continue;
 412                 }
 413
 414                 de = &d.dentry[bit_pos];
 415
 416                 if (unlikely(!de->name_len)) {
 417                         bit_pos++;
 418                         continue;
 419                 }
 420
 421                 new_name.name = d.filename[bit_pos];
 422                 new_name.len = de->name_len;
 423
 424                 ino = le32_to_cpu(de->ino);
 425                 fake_mode = get_de_type(de) << S_SHIFT;
 426
 427                 err = f2fs_add_regular_entry(dir, &new_name, NULL,
 428                                                         ino, fake_mode);
 429                 if (err)
 430                         goto punch_dentry_pages;
 431
 432                 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
 433         }
 434         return 0;
 435 punch_dentry_pages:
 436         truncate_inode_pages(&dir->i_data, 0);
 437         truncate_blocks(dir, 0, false);
 438         remove_dirty_inode(dir);
 439         return err;
 440 }
 441
 442 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
 443                                 struct f2fs_inline_dentry *inline_dentry)
 444 {
 445         struct f2fs_inline_dentry *backup_dentry;
 446         int err;
 447
 448         backup_dentry = f2fs_kmalloc(sizeof(struct f2fs_inline_dentry),
 449                                                         GFP_F2FS_ZERO);
 450         if (!backup_dentry) {
 451                 f2fs_put_page(ipage, 1);
 452                 return -ENOMEM;
 453         }
 454
 455         memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA);
 456         truncate_inline_inode(ipage, 0);
 457
 458         unlock_page(ipage);
 459
 460         err = f2fs_add_inline_entries(dir, backup_dentry);
 461         if (err)
 462                 goto recover;
 463
 464         lock_page(ipage);
 465
 466         stat_dec_inline_dir(dir);
 467         clear_inode_flag(dir, FI_INLINE_DENTRY);
 468         kfree(backup_dentry);
 469         return 0;
 470 recover:
 471         lock_page(ipage);
 472         memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA);
 473         f2fs_i_depth_write(dir, 0);
 474         f2fs_i_size_write(dir, MAX_INLINE_DATA);
 475         set_page_dirty(ipage);
 476         f2fs_put_page(ipage, 1);
 477
 478         kfree(backup_dentry);
 479         return err;
 480 }
 481
 482 static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage,
 483                                 struct f2fs_inline_dentry *inline_dentry)
 484 {
 485         if (!F2FS_I(dir)->i_dir_level)
 486                 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
 487         else
 488                 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
 489 }
 490
 491 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *name,
 492                         struct inode *inode, nid_t ino, umode_t mode)
 493 {
 494         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 495         struct page *ipage;
 496         unsigned int bit_pos;
 497         f2fs_hash_t name_hash;
 498         size_t namelen = name->len;
 499         struct f2fs_inline_dentry *dentry_blk = NULL;
 500         struct f2fs_dentry_ptr d;
 501         int slots = GET_DENTRY_SLOTS(namelen);
 502         struct page *page = NULL;
 503         int err = 0;
 504
 505         ipage = get_node_page(sbi, dir->i_ino);
 506         if (IS_ERR(ipage))
 507                 return PTR_ERR(ipage);
 508
 509         dentry_blk = inline_data_addr(ipage);
 510         bit_pos = room_for_filename(&dentry_blk->dentry_bitmap,
 511                                                 slots, NR_INLINE_DENTRY);
 512         if (bit_pos >= NR_INLINE_DENTRY) {
 513                 err = f2fs_convert_inline_dir(dir, ipage, dentry_blk);
 514                 if (err)
 515                         return err;
 516                 err = -EAGAIN;
 517                 goto out;
 518         }
 519
 520         if (inode) {
 521                 down_write(&F2FS_I(inode)->i_sem);
 522                 page = init_inode_metadata(inode, dir, name, ipage);
 523                 if (IS_ERR(page)) {
 524                         err = PTR_ERR(page);
 525                         goto fail;
 526                 }
 527         }
 528
 529         f2fs_wait_on_page_writeback(ipage, NODE, true);
 530
 531         name_hash = f2fs_dentry_hash(name);
 532         make_dentry_ptr(NULL, &d, (void *)dentry_blk, 2);
 533         f2fs_update_dentry(ino, mode, &d, name, name_hash, bit_pos);
 534
 535         set_page_dirty(ipage);
 536
 537         /* we don't need to mark_inode_dirty now */
 538         if (inode) {
 539                 f2fs_i_pino_write(inode, dir->i_ino);
 540                 f2fs_put_page(page, 1);
 541         }
 542
 543         update_parent_metadata(dir, inode, 0);
 544 fail:
 545         if (inode)
 546                 up_write(&F2FS_I(inode)->i_sem);
 547 out:
 548         f2fs_put_page(ipage, 1);
 549         return err;
 550 }
 551
 552 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
 553                                         struct inode *dir, struct inode *inode)
 554 {
 555         struct f2fs_inline_dentry *inline_dentry;
 556         int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
 557         unsigned int bit_pos;
 558         int i;
 559
 560         lock_page(page);
 561         f2fs_wait_on_page_writeback(page, NODE, true);
 562
 563         inline_dentry = inline_data_addr(page);
 564         bit_pos = dentry - inline_dentry->dentry;
 565         for (i = 0; i < slots; i++)
 566                 test_and_clear_bit_le(bit_pos + i,
 567                                 &inline_dentry->dentry_bitmap);
 568
 569         set_page_dirty(page);
 570         f2fs_put_page(page, 1);
 571
 572         dir->i_ctime = dir->i_mtime = CURRENT_TIME;
 573         f2fs_mark_inode_dirty_sync(dir);
 574
 575         if (inode)
 576                 f2fs_drop_nlink(dir, inode);
 577 }
 578
 579 bool f2fs_empty_inline_dir(struct inode *dir)
 580 {
 581         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
 582         struct page *ipage;
 583         unsigned int bit_pos = 2;
 584         struct f2fs_inline_dentry *dentry_blk;
 585
 586         ipage = get_node_page(sbi, dir->i_ino);
 587         if (IS_ERR(ipage))
 588                 return false;
 589
 590         dentry_blk = inline_data_addr(ipage);
 591         bit_pos = find_next_bit_le(&dentry_blk->dentry_bitmap,
 592                                         NR_INLINE_DENTRY,
 593                                         bit_pos);
 594
 595         f2fs_put_page(ipage, 1);
 596
 597         if (bit_pos < NR_INLINE_DENTRY)
 598                 return false;
 599
 600         return true;
 601 }
 602
 603 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
 604                                 struct fscrypt_str *fstr)
 605 {
 606         struct inode *inode = file_inode(file);
 607         struct f2fs_inline_dentry *inline_dentry = NULL;
 608         struct page *ipage = NULL;
 609         struct f2fs_dentry_ptr d;
 610
 611         if (ctx->pos == NR_INLINE_DENTRY)
 612                 return 0;
 613
 614         ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino);
 615         if (IS_ERR(ipage))
 616                 return PTR_ERR(ipage);
 617
 618         inline_dentry = inline_data_addr(ipage);
 619
 620         make_dentry_ptr(inode, &d, (void *)inline_dentry, 2);
 621
 622         if (!f2fs_fill_dentries(ctx, &d, 0, fstr))
 623                 ctx->pos = NR_INLINE_DENTRY;
 624
 625         f2fs_put_page(ipage, 1);
 626         return 0;
 627 }
 628
 629 int f2fs_inline_data_fiemap(struct inode *inode,
 630                 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
 631 {
 632         __u64 byteaddr, ilen;
 633         __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
 634                 FIEMAP_EXTENT_LAST;
 635         struct node_info ni;
 636         struct page *ipage;
 637         int err = 0;
 638
 639         ipage = get_node_page(F2FS_I_SB(inode), inode->i_ino);
 640         if (IS_ERR(ipage))
 641                 return PTR_ERR(ipage);
 642
 643         if (!f2fs_has_inline_data(inode)) {
 644                 err = -EAGAIN;
 645                 goto out;
 646         }
 647
 648         ilen = min_t(size_t, MAX_INLINE_DATA, i_size_read(inode));
 649         if (start >= ilen)
 650                 goto out;
 651         if (start + len < ilen)
 652                 ilen = start + len;
 653         ilen -= start;
 654
 655         get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
 656         byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
 657         byteaddr += (char *)inline_data_addr(ipage) - (char *)F2FS_INODE(ipage);
 658         err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
 659 out:
 660         f2fs_put_page(ipage, 1);
 661         return err;
 662 }