1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * fs/f2fs/inline.c 4 * Copyright (c) 2013, Intel Corporation 5 * Authors: Huajun Li <huajun.li@intel.com> 6 * Haicheng Li <haicheng.li@intel.com> 7 */ 8 9 #include <linux/fs.h> 10 #include <linux/f2fs_fs.h> 11 #include <linux/fiemap.h> 12 13 #include "f2fs.h" 14 #include "node.h" 15 16 bool f2fs_may_inline_data(struct inode *inode) 17 { 18 if (f2fs_is_atomic_file(inode)) 19 return false; 20 21 if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode)) 22 return false; 23 24 if (i_size_read(inode) > MAX_INLINE_DATA(inode)) 25 return false; 26 27 if (f2fs_post_read_required(inode)) 28 return false; 29 30 return true; 31 } 32 33 bool f2fs_may_inline_dentry(struct inode *inode) 34 { 35 if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY)) 36 return false; 37 38 if (!S_ISDIR(inode->i_mode)) 39 return false; 40 41 return true; 42 } 43 44 void f2fs_do_read_inline_data(struct page *page, struct page *ipage) 45 { 46 struct inode *inode = page->mapping->host; 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(inode), PAGE_SIZE); 55 56 /* Copy the whole inline data block */ 57 src_addr = inline_data_addr(inode, ipage); 58 dst_addr = kmap_atomic(page); 59 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); 60 flush_dcache_page(page); 61 kunmap_atomic(dst_addr); 62 if (!PageUptodate(page)) 63 SetPageUptodate(page); 64 } 65 66 void f2fs_truncate_inline_inode(struct inode *inode, 67 struct page *ipage, u64 from) 68 { 69 void *addr; 70 71 if (from >= MAX_INLINE_DATA(inode)) 72 return; 73 74 addr = inline_data_addr(inode, ipage); 75 76 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 77 memset(addr + from, 0, MAX_INLINE_DATA(inode) - from); 78 set_page_dirty(ipage); 79 80 if (from == 0) 81 clear_inode_flag(inode, FI_DATA_EXIST); 82 } 83 84 int f2fs_read_inline_data(struct inode *inode, struct page *page) 85 { 86 struct page *ipage; 87 88 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 89 if (IS_ERR(ipage)) { 90 unlock_page(page); 91 return PTR_ERR(ipage); 92 } 93 94 if (!f2fs_has_inline_data(inode)) { 95 f2fs_put_page(ipage, 1); 96 return -EAGAIN; 97 } 98 99 if (page->index) 100 zero_user_segment(page, 0, PAGE_SIZE); 101 else 102 f2fs_do_read_inline_data(page, ipage); 103 104 if (!PageUptodate(page)) 105 SetPageUptodate(page); 106 f2fs_put_page(ipage, 1); 107 unlock_page(page); 108 return 0; 109 } 110 111 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) 112 { 113 struct f2fs_io_info fio = { 114 .sbi = F2FS_I_SB(dn->inode), 115 .ino = dn->inode->i_ino, 116 .type = DATA, 117 .op = REQ_OP_WRITE, 118 .op_flags = REQ_SYNC | REQ_PRIO, 119 .page = page, 120 .encrypted_page = NULL, 121 .io_type = FS_DATA_IO, 122 }; 123 struct node_info ni; 124 int dirty, err; 125 126 if (!f2fs_exist_data(dn->inode)) 127 goto clear_out; 128 129 err = f2fs_reserve_block(dn, 0); 130 if (err) 131 return err; 132 133 err = f2fs_get_node_info(fio.sbi, dn->nid, &ni); 134 if (err) { 135 f2fs_truncate_data_blocks_range(dn, 1); 136 f2fs_put_dnode(dn); 137 return err; 138 } 139 140 fio.version = ni.version; 141 142 if (unlikely(dn->data_blkaddr != NEW_ADDR)) { 143 f2fs_put_dnode(dn); 144 set_sbi_flag(fio.sbi, SBI_NEED_FSCK); 145 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", 146 __func__, dn->inode->i_ino, dn->data_blkaddr); 147 return -EFSCORRUPTED; 148 } 149 150 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page)); 151 152 f2fs_do_read_inline_data(page, dn->inode_page); 153 set_page_dirty(page); 154 155 /* clear dirty state */ 156 dirty = clear_page_dirty_for_io(page); 157 158 /* write data page to try to make data consistent */ 159 set_page_writeback(page); 160 ClearPageError(page); 161 fio.old_blkaddr = dn->data_blkaddr; 162 set_inode_flag(dn->inode, FI_HOT_DATA); 163 f2fs_outplace_write_data(dn, &fio); 164 f2fs_wait_on_page_writeback(page, DATA, true, true); 165 if (dirty) { 166 inode_dec_dirty_pages(dn->inode); 167 f2fs_remove_dirty_inode(dn->inode); 168 } 169 170 /* this converted inline_data should be recovered. */ 171 set_inode_flag(dn->inode, FI_APPEND_WRITE); 172 173 /* clear inline data and flag after data writeback */ 174 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0); 175 clear_inline_node(dn->inode_page); 176 clear_out: 177 stat_dec_inline_inode(dn->inode); 178 clear_inode_flag(dn->inode, FI_INLINE_DATA); 179 f2fs_put_dnode(dn); 180 return 0; 181 } 182 183 int f2fs_convert_inline_inode(struct inode *inode) 184 { 185 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 186 struct dnode_of_data dn; 187 struct page *ipage, *page; 188 int err = 0; 189 190 if (!f2fs_has_inline_data(inode)) 191 return 0; 192 193 page = f2fs_grab_cache_page(inode->i_mapping, 0, false); 194 if (!page) 195 return -ENOMEM; 196 197 f2fs_lock_op(sbi); 198 199 ipage = f2fs_get_node_page(sbi, inode->i_ino); 200 if (IS_ERR(ipage)) { 201 err = PTR_ERR(ipage); 202 goto out; 203 } 204 205 set_new_dnode(&dn, inode, ipage, ipage, 0); 206 207 if (f2fs_has_inline_data(inode)) 208 err = f2fs_convert_inline_page(&dn, page); 209 210 f2fs_put_dnode(&dn); 211 out: 212 f2fs_unlock_op(sbi); 213 214 f2fs_put_page(page, 1); 215 216 f2fs_balance_fs(sbi, dn.node_changed); 217 218 return err; 219 } 220 221 int f2fs_write_inline_data(struct inode *inode, struct page *page) 222 { 223 void *src_addr, *dst_addr; 224 struct dnode_of_data dn; 225 int err; 226 227 set_new_dnode(&dn, inode, NULL, NULL, 0); 228 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 229 if (err) 230 return err; 231 232 if (!f2fs_has_inline_data(inode)) { 233 f2fs_put_dnode(&dn); 234 return -EAGAIN; 235 } 236 237 f2fs_bug_on(F2FS_I_SB(inode), page->index); 238 239 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true); 240 src_addr = kmap_atomic(page); 241 dst_addr = inline_data_addr(inode, dn.inode_page); 242 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); 243 kunmap_atomic(src_addr); 244 set_page_dirty(dn.inode_page); 245 246 f2fs_clear_page_cache_dirty_tag(page); 247 248 set_inode_flag(inode, FI_APPEND_WRITE); 249 set_inode_flag(inode, FI_DATA_EXIST); 250 251 clear_inline_node(dn.inode_page); 252 f2fs_put_dnode(&dn); 253 return 0; 254 } 255 256 bool f2fs_recover_inline_data(struct inode *inode, struct page *npage) 257 { 258 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 259 struct f2fs_inode *ri = NULL; 260 void *src_addr, *dst_addr; 261 struct page *ipage; 262 263 /* 264 * The inline_data recovery policy is as follows. 265 * [prev.] [next] of inline_data flag 266 * o o -> recover inline_data 267 * o x -> remove inline_data, and then recover data blocks 268 * x o -> remove inline_data, and then recover inline_data 269 * x x -> recover data blocks 270 */ 271 if (IS_INODE(npage)) 272 ri = F2FS_INODE(npage); 273 274 if (f2fs_has_inline_data(inode) && 275 ri && (ri->i_inline & F2FS_INLINE_DATA)) { 276 process_inline: 277 ipage = f2fs_get_node_page(sbi, inode->i_ino); 278 f2fs_bug_on(sbi, IS_ERR(ipage)); 279 280 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 281 282 src_addr = inline_data_addr(inode, npage); 283 dst_addr = inline_data_addr(inode, ipage); 284 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); 285 286 set_inode_flag(inode, FI_INLINE_DATA); 287 set_inode_flag(inode, FI_DATA_EXIST); 288 289 set_page_dirty(ipage); 290 f2fs_put_page(ipage, 1); 291 return true; 292 } 293 294 if (f2fs_has_inline_data(inode)) { 295 ipage = f2fs_get_node_page(sbi, inode->i_ino); 296 f2fs_bug_on(sbi, IS_ERR(ipage)); 297 f2fs_truncate_inline_inode(inode, ipage, 0); 298 clear_inode_flag(inode, FI_INLINE_DATA); 299 f2fs_put_page(ipage, 1); 300 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { 301 if (f2fs_truncate_blocks(inode, 0, false)) 302 return false; 303 goto process_inline; 304 } 305 return false; 306 } 307 308 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, 309 struct fscrypt_name *fname, struct page **res_page) 310 { 311 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); 312 struct qstr name = FSTR_TO_QSTR(&fname->disk_name); 313 struct f2fs_dir_entry *de; 314 struct f2fs_dentry_ptr d; 315 struct page *ipage; 316 void *inline_dentry; 317 f2fs_hash_t namehash; 318 319 ipage = f2fs_get_node_page(sbi, dir->i_ino); 320 if (IS_ERR(ipage)) { 321 *res_page = ipage; 322 return NULL; 323 } 324 325 namehash = f2fs_dentry_hash(dir, &name, fname); 326 327 inline_dentry = inline_data_addr(dir, ipage); 328 329 make_dentry_ptr_inline(dir, &d, inline_dentry); 330 de = f2fs_find_target_dentry(fname, namehash, NULL, &d); 331 unlock_page(ipage); 332 if (de) 333 *res_page = ipage; 334 else 335 f2fs_put_page(ipage, 0); 336 337 return de; 338 } 339 340 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, 341 struct page *ipage) 342 { 343 struct f2fs_dentry_ptr d; 344 void *inline_dentry; 345 346 inline_dentry = inline_data_addr(inode, ipage); 347 348 make_dentry_ptr_inline(inode, &d, inline_dentry); 349 f2fs_do_make_empty_dir(inode, parent, &d); 350 351 set_page_dirty(ipage); 352 353 /* update i_size to MAX_INLINE_DATA */ 354 if (i_size_read(inode) < MAX_INLINE_DATA(inode)) 355 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode)); 356 return 0; 357 } 358 359 /* 360 * NOTE: ipage is grabbed by caller, but if any error occurs, we should 361 * release ipage in this function. 362 */ 363 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, 364 void *inline_dentry) 365 { 366 struct page *page; 367 struct dnode_of_data dn; 368 struct f2fs_dentry_block *dentry_blk; 369 struct f2fs_dentry_ptr src, dst; 370 int err; 371 372 page = f2fs_grab_cache_page(dir->i_mapping, 0, true); 373 if (!page) { 374 f2fs_put_page(ipage, 1); 375 return -ENOMEM; 376 } 377 378 set_new_dnode(&dn, dir, ipage, NULL, 0); 379 err = f2fs_reserve_block(&dn, 0); 380 if (err) 381 goto out; 382 383 if (unlikely(dn.data_blkaddr != NEW_ADDR)) { 384 f2fs_put_dnode(&dn); 385 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK); 386 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", 387 __func__, dir->i_ino, dn.data_blkaddr); 388 err = -EFSCORRUPTED; 389 goto out; 390 } 391 392 f2fs_wait_on_page_writeback(page, DATA, true, true); 393 394 dentry_blk = page_address(page); 395 396 make_dentry_ptr_inline(dir, &src, inline_dentry); 397 make_dentry_ptr_block(dir, &dst, dentry_blk); 398 399 /* copy data from inline dentry block to new dentry block */ 400 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap); 401 memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap); 402 /* 403 * we do not need to zero out remainder part of dentry and filename 404 * field, since we have used bitmap for marking the usage status of 405 * them, besides, we can also ignore copying/zeroing reserved space 406 * of dentry block, because them haven't been used so far. 407 */ 408 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max); 409 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN); 410 411 if (!PageUptodate(page)) 412 SetPageUptodate(page); 413 set_page_dirty(page); 414 415 /* clear inline dir and flag after data writeback */ 416 f2fs_truncate_inline_inode(dir, ipage, 0); 417 418 stat_dec_inline_dir(dir); 419 clear_inode_flag(dir, FI_INLINE_DENTRY); 420 421 /* 422 * should retrieve reserved space which was used to keep 423 * inline_dentry's structure for backward compatibility. 424 */ 425 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && 426 !f2fs_has_inline_xattr(dir)) 427 F2FS_I(dir)->i_inline_xattr_size = 0; 428 429 f2fs_i_depth_write(dir, 1); 430 if (i_size_read(dir) < PAGE_SIZE) 431 f2fs_i_size_write(dir, PAGE_SIZE); 432 out: 433 f2fs_put_page(page, 1); 434 return err; 435 } 436 437 static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry) 438 { 439 struct f2fs_dentry_ptr d; 440 unsigned long bit_pos = 0; 441 int err = 0; 442 443 make_dentry_ptr_inline(dir, &d, inline_dentry); 444 445 while (bit_pos < d.max) { 446 struct f2fs_dir_entry *de; 447 struct qstr new_name; 448 nid_t ino; 449 umode_t fake_mode; 450 451 if (!test_bit_le(bit_pos, d.bitmap)) { 452 bit_pos++; 453 continue; 454 } 455 456 de = &d.dentry[bit_pos]; 457 458 if (unlikely(!de->name_len)) { 459 bit_pos++; 460 continue; 461 } 462 463 new_name.name = d.filename[bit_pos]; 464 new_name.len = le16_to_cpu(de->name_len); 465 466 ino = le32_to_cpu(de->ino); 467 fake_mode = f2fs_get_de_type(de) << S_SHIFT; 468 469 err = f2fs_add_regular_entry(dir, &new_name, NULL, NULL, 470 ino, fake_mode); 471 if (err) 472 goto punch_dentry_pages; 473 474 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); 475 } 476 return 0; 477 punch_dentry_pages: 478 truncate_inode_pages(&dir->i_data, 0); 479 f2fs_truncate_blocks(dir, 0, false); 480 f2fs_remove_dirty_inode(dir); 481 return err; 482 } 483 484 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, 485 void *inline_dentry) 486 { 487 void *backup_dentry; 488 int err; 489 490 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), 491 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO); 492 if (!backup_dentry) { 493 f2fs_put_page(ipage, 1); 494 return -ENOMEM; 495 } 496 497 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir)); 498 f2fs_truncate_inline_inode(dir, ipage, 0); 499 500 unlock_page(ipage); 501 502 err = f2fs_add_inline_entries(dir, backup_dentry); 503 if (err) 504 goto recover; 505 506 lock_page(ipage); 507 508 stat_dec_inline_dir(dir); 509 clear_inode_flag(dir, FI_INLINE_DENTRY); 510 511 /* 512 * should retrieve reserved space which was used to keep 513 * inline_dentry's structure for backward compatibility. 514 */ 515 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && 516 !f2fs_has_inline_xattr(dir)) 517 F2FS_I(dir)->i_inline_xattr_size = 0; 518 519 kvfree(backup_dentry); 520 return 0; 521 recover: 522 lock_page(ipage); 523 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 524 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir)); 525 f2fs_i_depth_write(dir, 0); 526 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir)); 527 set_page_dirty(ipage); 528 f2fs_put_page(ipage, 1); 529 530 kvfree(backup_dentry); 531 return err; 532 } 533 534 static int do_convert_inline_dir(struct inode *dir, struct page *ipage, 535 void *inline_dentry) 536 { 537 if (!F2FS_I(dir)->i_dir_level) 538 return f2fs_move_inline_dirents(dir, ipage, inline_dentry); 539 else 540 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry); 541 } 542 543 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry) 544 { 545 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 546 struct page *ipage; 547 struct fscrypt_name fname; 548 void *inline_dentry = NULL; 549 int err = 0; 550 551 if (!f2fs_has_inline_dentry(dir)) 552 return 0; 553 554 f2fs_lock_op(sbi); 555 556 err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &fname); 557 if (err) 558 goto out; 559 560 ipage = f2fs_get_node_page(sbi, dir->i_ino); 561 if (IS_ERR(ipage)) { 562 err = PTR_ERR(ipage); 563 goto out; 564 } 565 566 if (f2fs_has_enough_room(dir, ipage, &fname)) { 567 f2fs_put_page(ipage, 1); 568 goto out; 569 } 570 571 inline_dentry = inline_data_addr(dir, ipage); 572 573 err = do_convert_inline_dir(dir, ipage, inline_dentry); 574 if (!err) 575 f2fs_put_page(ipage, 1); 576 out: 577 f2fs_unlock_op(sbi); 578 return err; 579 } 580 581 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name, 582 const struct qstr *orig_name, 583 struct inode *inode, nid_t ino, umode_t mode) 584 { 585 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 586 struct page *ipage; 587 unsigned int bit_pos; 588 f2fs_hash_t name_hash; 589 void *inline_dentry = NULL; 590 struct f2fs_dentry_ptr d; 591 int slots = GET_DENTRY_SLOTS(new_name->len); 592 struct page *page = NULL; 593 int err = 0; 594 595 ipage = f2fs_get_node_page(sbi, dir->i_ino); 596 if (IS_ERR(ipage)) 597 return PTR_ERR(ipage); 598 599 inline_dentry = inline_data_addr(dir, ipage); 600 make_dentry_ptr_inline(dir, &d, inline_dentry); 601 602 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max); 603 if (bit_pos >= d.max) { 604 err = do_convert_inline_dir(dir, ipage, inline_dentry); 605 if (err) 606 return err; 607 err = -EAGAIN; 608 goto out; 609 } 610 611 if (inode) { 612 down_write(&F2FS_I(inode)->i_sem); 613 page = f2fs_init_inode_metadata(inode, dir, new_name, 614 orig_name, ipage); 615 if (IS_ERR(page)) { 616 err = PTR_ERR(page); 617 goto fail; 618 } 619 } 620 621 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 622 623 name_hash = f2fs_dentry_hash(dir, new_name, NULL); 624 f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos); 625 626 set_page_dirty(ipage); 627 628 /* we don't need to mark_inode_dirty now */ 629 if (inode) { 630 f2fs_i_pino_write(inode, dir->i_ino); 631 632 /* synchronize inode page's data from inode cache */ 633 if (is_inode_flag_set(inode, FI_NEW_INODE)) 634 f2fs_update_inode(inode, page); 635 636 f2fs_put_page(page, 1); 637 } 638 639 f2fs_update_parent_metadata(dir, inode, 0); 640 fail: 641 if (inode) 642 up_write(&F2FS_I(inode)->i_sem); 643 out: 644 f2fs_put_page(ipage, 1); 645 return err; 646 } 647 648 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, 649 struct inode *dir, struct inode *inode) 650 { 651 struct f2fs_dentry_ptr d; 652 void *inline_dentry; 653 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); 654 unsigned int bit_pos; 655 int i; 656 657 lock_page(page); 658 f2fs_wait_on_page_writeback(page, NODE, true, true); 659 660 inline_dentry = inline_data_addr(dir, page); 661 make_dentry_ptr_inline(dir, &d, inline_dentry); 662 663 bit_pos = dentry - d.dentry; 664 for (i = 0; i < slots; i++) 665 __clear_bit_le(bit_pos + i, d.bitmap); 666 667 set_page_dirty(page); 668 f2fs_put_page(page, 1); 669 670 dir->i_ctime = dir->i_mtime = current_time(dir); 671 f2fs_mark_inode_dirty_sync(dir, false); 672 673 if (inode) 674 f2fs_drop_nlink(dir, inode); 675 } 676 677 bool f2fs_empty_inline_dir(struct inode *dir) 678 { 679 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 680 struct page *ipage; 681 unsigned int bit_pos = 2; 682 void *inline_dentry; 683 struct f2fs_dentry_ptr d; 684 685 ipage = f2fs_get_node_page(sbi, dir->i_ino); 686 if (IS_ERR(ipage)) 687 return false; 688 689 inline_dentry = inline_data_addr(dir, ipage); 690 make_dentry_ptr_inline(dir, &d, inline_dentry); 691 692 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos); 693 694 f2fs_put_page(ipage, 1); 695 696 if (bit_pos < d.max) 697 return false; 698 699 return true; 700 } 701 702 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, 703 struct fscrypt_str *fstr) 704 { 705 struct inode *inode = file_inode(file); 706 struct page *ipage = NULL; 707 struct f2fs_dentry_ptr d; 708 void *inline_dentry = NULL; 709 int err; 710 711 make_dentry_ptr_inline(inode, &d, inline_dentry); 712 713 if (ctx->pos == d.max) 714 return 0; 715 716 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 717 if (IS_ERR(ipage)) 718 return PTR_ERR(ipage); 719 720 /* 721 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access 722 * ipage without page's lock held. 723 */ 724 unlock_page(ipage); 725 726 inline_dentry = inline_data_addr(inode, ipage); 727 728 make_dentry_ptr_inline(inode, &d, inline_dentry); 729 730 err = f2fs_fill_dentries(ctx, &d, 0, fstr); 731 if (!err) 732 ctx->pos = d.max; 733 734 f2fs_put_page(ipage, 0); 735 return err < 0 ? err : 0; 736 } 737 738 int f2fs_inline_data_fiemap(struct inode *inode, 739 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) 740 { 741 __u64 byteaddr, ilen; 742 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | 743 FIEMAP_EXTENT_LAST; 744 struct node_info ni; 745 struct page *ipage; 746 int err = 0; 747 748 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 749 if (IS_ERR(ipage)) 750 return PTR_ERR(ipage); 751 752 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) && 753 !f2fs_has_inline_data(inode)) { 754 err = -EAGAIN; 755 goto out; 756 } 757 758 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) { 759 err = -EAGAIN; 760 goto out; 761 } 762 763 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode)); 764 if (start >= ilen) 765 goto out; 766 if (start + len < ilen) 767 ilen = start + len; 768 ilen -= start; 769 770 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); 771 if (err) 772 goto out; 773 774 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; 775 byteaddr += (char *)inline_data_addr(inode, ipage) - 776 (char *)F2FS_INODE(ipage); 777 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); 778 out: 779 f2fs_put_page(ipage, 1); 780 return err; 781 } 782