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 #include <trace/events/f2fs.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(inode)) 26 return false; 27 28 if (f2fs_post_read_required(inode)) 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 f2fs_do_read_inline_data(struct page *page, struct page *ipage) 46 { 47 struct inode *inode = page->mapping->host; 48 void *src_addr, *dst_addr; 49 50 if (PageUptodate(page)) 51 return; 52 53 f2fs_bug_on(F2FS_P_SB(page), page->index); 54 55 zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE); 56 57 /* Copy the whole inline data block */ 58 src_addr = inline_data_addr(inode, ipage); 59 dst_addr = kmap_atomic(page); 60 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); 61 flush_dcache_page(page); 62 kunmap_atomic(dst_addr); 63 if (!PageUptodate(page)) 64 SetPageUptodate(page); 65 } 66 67 void f2fs_truncate_inline_inode(struct inode *inode, 68 struct page *ipage, u64 from) 69 { 70 void *addr; 71 72 if (from >= MAX_INLINE_DATA(inode)) 73 return; 74 75 addr = inline_data_addr(inode, ipage); 76 77 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 78 memset(addr + from, 0, MAX_INLINE_DATA(inode) - from); 79 set_page_dirty(ipage); 80 81 if (from == 0) 82 clear_inode_flag(inode, FI_DATA_EXIST); 83 } 84 85 int f2fs_read_inline_data(struct inode *inode, struct page *page) 86 { 87 struct page *ipage; 88 89 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 90 if (IS_ERR(ipage)) { 91 unlock_page(page); 92 return PTR_ERR(ipage); 93 } 94 95 if (!f2fs_has_inline_data(inode)) { 96 f2fs_put_page(ipage, 1); 97 return -EAGAIN; 98 } 99 100 if (page->index) 101 zero_user_segment(page, 0, PAGE_SIZE); 102 else 103 f2fs_do_read_inline_data(page, ipage); 104 105 if (!PageUptodate(page)) 106 SetPageUptodate(page); 107 f2fs_put_page(ipage, 1); 108 unlock_page(page); 109 return 0; 110 } 111 112 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page) 113 { 114 struct f2fs_io_info fio = { 115 .sbi = F2FS_I_SB(dn->inode), 116 .ino = dn->inode->i_ino, 117 .type = DATA, 118 .op = REQ_OP_WRITE, 119 .op_flags = REQ_SYNC | REQ_PRIO, 120 .page = page, 121 .encrypted_page = NULL, 122 .io_type = FS_DATA_IO, 123 }; 124 struct node_info ni; 125 int dirty, err; 126 127 if (!f2fs_exist_data(dn->inode)) 128 goto clear_out; 129 130 err = f2fs_reserve_block(dn, 0); 131 if (err) 132 return err; 133 134 err = f2fs_get_node_info(fio.sbi, dn->nid, &ni); 135 if (err) { 136 f2fs_truncate_data_blocks_range(dn, 1); 137 f2fs_put_dnode(dn); 138 return err; 139 } 140 141 fio.version = ni.version; 142 143 if (unlikely(dn->data_blkaddr != NEW_ADDR)) { 144 f2fs_put_dnode(dn); 145 set_sbi_flag(fio.sbi, SBI_NEED_FSCK); 146 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", 147 __func__, dn->inode->i_ino, dn->data_blkaddr); 148 return -EFSCORRUPTED; 149 } 150 151 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page)); 152 153 f2fs_do_read_inline_data(page, dn->inode_page); 154 set_page_dirty(page); 155 156 /* clear dirty state */ 157 dirty = clear_page_dirty_for_io(page); 158 159 /* write data page to try to make data consistent */ 160 set_page_writeback(page); 161 ClearPageError(page); 162 fio.old_blkaddr = dn->data_blkaddr; 163 set_inode_flag(dn->inode, FI_HOT_DATA); 164 f2fs_outplace_write_data(dn, &fio); 165 f2fs_wait_on_page_writeback(page, DATA, true, true); 166 if (dirty) { 167 inode_dec_dirty_pages(dn->inode); 168 f2fs_remove_dirty_inode(dn->inode); 169 } 170 171 /* this converted inline_data should be recovered. */ 172 set_inode_flag(dn->inode, FI_APPEND_WRITE); 173 174 /* clear inline data and flag after data writeback */ 175 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0); 176 clear_inline_node(dn->inode_page); 177 clear_out: 178 stat_dec_inline_inode(dn->inode); 179 clear_inode_flag(dn->inode, FI_INLINE_DATA); 180 f2fs_put_dnode(dn); 181 return 0; 182 } 183 184 int f2fs_convert_inline_inode(struct inode *inode) 185 { 186 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 187 struct dnode_of_data dn; 188 struct page *ipage, *page; 189 int err = 0; 190 191 if (!f2fs_has_inline_data(inode)) 192 return 0; 193 194 page = f2fs_grab_cache_page(inode->i_mapping, 0, false); 195 if (!page) 196 return -ENOMEM; 197 198 f2fs_lock_op(sbi); 199 200 ipage = f2fs_get_node_page(sbi, inode->i_ino); 201 if (IS_ERR(ipage)) { 202 err = PTR_ERR(ipage); 203 goto out; 204 } 205 206 set_new_dnode(&dn, inode, ipage, ipage, 0); 207 208 if (f2fs_has_inline_data(inode)) 209 err = f2fs_convert_inline_page(&dn, page); 210 211 f2fs_put_dnode(&dn); 212 out: 213 f2fs_unlock_op(sbi); 214 215 f2fs_put_page(page, 1); 216 217 f2fs_balance_fs(sbi, dn.node_changed); 218 219 return err; 220 } 221 222 int f2fs_write_inline_data(struct inode *inode, struct page *page) 223 { 224 void *src_addr, *dst_addr; 225 struct dnode_of_data dn; 226 int err; 227 228 set_new_dnode(&dn, inode, NULL, NULL, 0); 229 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 230 if (err) 231 return err; 232 233 if (!f2fs_has_inline_data(inode)) { 234 f2fs_put_dnode(&dn); 235 return -EAGAIN; 236 } 237 238 f2fs_bug_on(F2FS_I_SB(inode), page->index); 239 240 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true); 241 src_addr = kmap_atomic(page); 242 dst_addr = inline_data_addr(inode, dn.inode_page); 243 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); 244 kunmap_atomic(src_addr); 245 set_page_dirty(dn.inode_page); 246 247 f2fs_clear_page_cache_dirty_tag(page); 248 249 set_inode_flag(inode, FI_APPEND_WRITE); 250 set_inode_flag(inode, FI_DATA_EXIST); 251 252 clear_inline_node(dn.inode_page); 253 f2fs_put_dnode(&dn); 254 return 0; 255 } 256 257 int f2fs_recover_inline_data(struct inode *inode, struct page *npage) 258 { 259 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 260 struct f2fs_inode *ri = NULL; 261 void *src_addr, *dst_addr; 262 struct page *ipage; 263 264 /* 265 * The inline_data recovery policy is as follows. 266 * [prev.] [next] of inline_data flag 267 * o o -> recover inline_data 268 * o x -> remove inline_data, and then recover data blocks 269 * x o -> remove inline_data, and then recover inline_data 270 * x x -> recover data blocks 271 */ 272 if (IS_INODE(npage)) 273 ri = F2FS_INODE(npage); 274 275 if (f2fs_has_inline_data(inode) && 276 ri && (ri->i_inline & F2FS_INLINE_DATA)) { 277 process_inline: 278 ipage = f2fs_get_node_page(sbi, inode->i_ino); 279 if (IS_ERR(ipage)) 280 return PTR_ERR(ipage); 281 282 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 283 284 src_addr = inline_data_addr(inode, npage); 285 dst_addr = inline_data_addr(inode, ipage); 286 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); 287 288 set_inode_flag(inode, FI_INLINE_DATA); 289 set_inode_flag(inode, FI_DATA_EXIST); 290 291 set_page_dirty(ipage); 292 f2fs_put_page(ipage, 1); 293 return 1; 294 } 295 296 if (f2fs_has_inline_data(inode)) { 297 ipage = f2fs_get_node_page(sbi, inode->i_ino); 298 if (IS_ERR(ipage)) 299 return PTR_ERR(ipage); 300 f2fs_truncate_inline_inode(inode, ipage, 0); 301 clear_inode_flag(inode, FI_INLINE_DATA); 302 f2fs_put_page(ipage, 1); 303 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { 304 int ret; 305 306 ret = f2fs_truncate_blocks(inode, 0, false); 307 if (ret) 308 return ret; 309 goto process_inline; 310 } 311 return 0; 312 } 313 314 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, 315 const struct f2fs_filename *fname, 316 struct page **res_page) 317 { 318 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); 319 struct f2fs_dir_entry *de; 320 struct f2fs_dentry_ptr d; 321 struct page *ipage; 322 void *inline_dentry; 323 324 ipage = f2fs_get_node_page(sbi, dir->i_ino); 325 if (IS_ERR(ipage)) { 326 *res_page = ipage; 327 return NULL; 328 } 329 330 inline_dentry = inline_data_addr(dir, ipage); 331 332 make_dentry_ptr_inline(dir, &d, inline_dentry); 333 de = f2fs_find_target_dentry(&d, fname, NULL); 334 unlock_page(ipage); 335 if (de) 336 *res_page = ipage; 337 else 338 f2fs_put_page(ipage, 0); 339 340 return de; 341 } 342 343 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, 344 struct page *ipage) 345 { 346 struct f2fs_dentry_ptr d; 347 void *inline_dentry; 348 349 inline_dentry = inline_data_addr(inode, ipage); 350 351 make_dentry_ptr_inline(inode, &d, inline_dentry); 352 f2fs_do_make_empty_dir(inode, parent, &d); 353 354 set_page_dirty(ipage); 355 356 /* update i_size to MAX_INLINE_DATA */ 357 if (i_size_read(inode) < MAX_INLINE_DATA(inode)) 358 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode)); 359 return 0; 360 } 361 362 /* 363 * NOTE: ipage is grabbed by caller, but if any error occurs, we should 364 * release ipage in this function. 365 */ 366 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, 367 void *inline_dentry) 368 { 369 struct page *page; 370 struct dnode_of_data dn; 371 struct f2fs_dentry_block *dentry_blk; 372 struct f2fs_dentry_ptr src, dst; 373 int err; 374 375 page = f2fs_grab_cache_page(dir->i_mapping, 0, true); 376 if (!page) { 377 f2fs_put_page(ipage, 1); 378 return -ENOMEM; 379 } 380 381 set_new_dnode(&dn, dir, ipage, NULL, 0); 382 err = f2fs_reserve_block(&dn, 0); 383 if (err) 384 goto out; 385 386 if (unlikely(dn.data_blkaddr != NEW_ADDR)) { 387 f2fs_put_dnode(&dn); 388 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK); 389 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", 390 __func__, dir->i_ino, dn.data_blkaddr); 391 err = -EFSCORRUPTED; 392 goto out; 393 } 394 395 f2fs_wait_on_page_writeback(page, DATA, true, true); 396 397 dentry_blk = page_address(page); 398 399 make_dentry_ptr_inline(dir, &src, inline_dentry); 400 make_dentry_ptr_block(dir, &dst, dentry_blk); 401 402 /* copy data from inline dentry block to new dentry block */ 403 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap); 404 memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap); 405 /* 406 * we do not need to zero out remainder part of dentry and filename 407 * field, since we have used bitmap for marking the usage status of 408 * them, besides, we can also ignore copying/zeroing reserved space 409 * of dentry block, because them haven't been used so far. 410 */ 411 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max); 412 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN); 413 414 if (!PageUptodate(page)) 415 SetPageUptodate(page); 416 set_page_dirty(page); 417 418 /* clear inline dir and flag after data writeback */ 419 f2fs_truncate_inline_inode(dir, ipage, 0); 420 421 stat_dec_inline_dir(dir); 422 clear_inode_flag(dir, FI_INLINE_DENTRY); 423 424 /* 425 * should retrieve reserved space which was used to keep 426 * inline_dentry's structure for backward compatibility. 427 */ 428 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && 429 !f2fs_has_inline_xattr(dir)) 430 F2FS_I(dir)->i_inline_xattr_size = 0; 431 432 f2fs_i_depth_write(dir, 1); 433 if (i_size_read(dir) < PAGE_SIZE) 434 f2fs_i_size_write(dir, PAGE_SIZE); 435 out: 436 f2fs_put_page(page, 1); 437 return err; 438 } 439 440 static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry) 441 { 442 struct f2fs_dentry_ptr d; 443 unsigned long bit_pos = 0; 444 int err = 0; 445 446 make_dentry_ptr_inline(dir, &d, inline_dentry); 447 448 while (bit_pos < d.max) { 449 struct f2fs_dir_entry *de; 450 struct f2fs_filename fname; 451 nid_t ino; 452 umode_t fake_mode; 453 454 if (!test_bit_le(bit_pos, d.bitmap)) { 455 bit_pos++; 456 continue; 457 } 458 459 de = &d.dentry[bit_pos]; 460 461 if (unlikely(!de->name_len)) { 462 bit_pos++; 463 continue; 464 } 465 466 /* 467 * We only need the disk_name and hash to move the dentry. 468 * We don't need the original or casefolded filenames. 469 */ 470 memset(&fname, 0, sizeof(fname)); 471 fname.disk_name.name = d.filename[bit_pos]; 472 fname.disk_name.len = le16_to_cpu(de->name_len); 473 fname.hash = de->hash_code; 474 475 ino = le32_to_cpu(de->ino); 476 fake_mode = f2fs_get_de_type(de) << S_SHIFT; 477 478 err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode); 479 if (err) 480 goto punch_dentry_pages; 481 482 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); 483 } 484 return 0; 485 punch_dentry_pages: 486 truncate_inode_pages(&dir->i_data, 0); 487 f2fs_truncate_blocks(dir, 0, false); 488 f2fs_remove_dirty_inode(dir); 489 return err; 490 } 491 492 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, 493 void *inline_dentry) 494 { 495 void *backup_dentry; 496 int err; 497 498 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), 499 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO); 500 if (!backup_dentry) { 501 f2fs_put_page(ipage, 1); 502 return -ENOMEM; 503 } 504 505 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir)); 506 f2fs_truncate_inline_inode(dir, ipage, 0); 507 508 unlock_page(ipage); 509 510 err = f2fs_add_inline_entries(dir, backup_dentry); 511 if (err) 512 goto recover; 513 514 lock_page(ipage); 515 516 stat_dec_inline_dir(dir); 517 clear_inode_flag(dir, FI_INLINE_DENTRY); 518 519 /* 520 * should retrieve reserved space which was used to keep 521 * inline_dentry's structure for backward compatibility. 522 */ 523 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && 524 !f2fs_has_inline_xattr(dir)) 525 F2FS_I(dir)->i_inline_xattr_size = 0; 526 527 kvfree(backup_dentry); 528 return 0; 529 recover: 530 lock_page(ipage); 531 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 532 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir)); 533 f2fs_i_depth_write(dir, 0); 534 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir)); 535 set_page_dirty(ipage); 536 f2fs_put_page(ipage, 1); 537 538 kvfree(backup_dentry); 539 return err; 540 } 541 542 static int do_convert_inline_dir(struct inode *dir, struct page *ipage, 543 void *inline_dentry) 544 { 545 if (!F2FS_I(dir)->i_dir_level) 546 return f2fs_move_inline_dirents(dir, ipage, inline_dentry); 547 else 548 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry); 549 } 550 551 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry) 552 { 553 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 554 struct page *ipage; 555 struct f2fs_filename fname; 556 void *inline_dentry = NULL; 557 int err = 0; 558 559 if (!f2fs_has_inline_dentry(dir)) 560 return 0; 561 562 f2fs_lock_op(sbi); 563 564 err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname); 565 if (err) 566 goto out; 567 568 ipage = f2fs_get_node_page(sbi, dir->i_ino); 569 if (IS_ERR(ipage)) { 570 err = PTR_ERR(ipage); 571 goto out_fname; 572 } 573 574 if (f2fs_has_enough_room(dir, ipage, &fname)) { 575 f2fs_put_page(ipage, 1); 576 goto out_fname; 577 } 578 579 inline_dentry = inline_data_addr(dir, ipage); 580 581 err = do_convert_inline_dir(dir, ipage, inline_dentry); 582 if (!err) 583 f2fs_put_page(ipage, 1); 584 out_fname: 585 f2fs_free_filename(&fname); 586 out: 587 f2fs_unlock_op(sbi); 588 return err; 589 } 590 591 int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, 592 struct inode *inode, nid_t ino, umode_t mode) 593 { 594 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 595 struct page *ipage; 596 unsigned int bit_pos; 597 void *inline_dentry = NULL; 598 struct f2fs_dentry_ptr d; 599 int slots = GET_DENTRY_SLOTS(fname->disk_name.len); 600 struct page *page = NULL; 601 int err = 0; 602 603 ipage = f2fs_get_node_page(sbi, dir->i_ino); 604 if (IS_ERR(ipage)) 605 return PTR_ERR(ipage); 606 607 inline_dentry = inline_data_addr(dir, ipage); 608 make_dentry_ptr_inline(dir, &d, inline_dentry); 609 610 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max); 611 if (bit_pos >= d.max) { 612 err = do_convert_inline_dir(dir, ipage, inline_dentry); 613 if (err) 614 return err; 615 err = -EAGAIN; 616 goto out; 617 } 618 619 if (inode) { 620 down_write(&F2FS_I(inode)->i_sem); 621 page = f2fs_init_inode_metadata(inode, dir, fname, ipage); 622 if (IS_ERR(page)) { 623 err = PTR_ERR(page); 624 goto fail; 625 } 626 } 627 628 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 629 630 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash, 631 bit_pos); 632 633 set_page_dirty(ipage); 634 635 /* we don't need to mark_inode_dirty now */ 636 if (inode) { 637 f2fs_i_pino_write(inode, dir->i_ino); 638 639 /* synchronize inode page's data from inode cache */ 640 if (is_inode_flag_set(inode, FI_NEW_INODE)) 641 f2fs_update_inode(inode, page); 642 643 f2fs_put_page(page, 1); 644 } 645 646 f2fs_update_parent_metadata(dir, inode, 0); 647 fail: 648 if (inode) 649 up_write(&F2FS_I(inode)->i_sem); 650 out: 651 f2fs_put_page(ipage, 1); 652 return err; 653 } 654 655 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, 656 struct inode *dir, struct inode *inode) 657 { 658 struct f2fs_dentry_ptr d; 659 void *inline_dentry; 660 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); 661 unsigned int bit_pos; 662 int i; 663 664 lock_page(page); 665 f2fs_wait_on_page_writeback(page, NODE, true, true); 666 667 inline_dentry = inline_data_addr(dir, page); 668 make_dentry_ptr_inline(dir, &d, inline_dentry); 669 670 bit_pos = dentry - d.dentry; 671 for (i = 0; i < slots; i++) 672 __clear_bit_le(bit_pos + i, d.bitmap); 673 674 set_page_dirty(page); 675 f2fs_put_page(page, 1); 676 677 dir->i_ctime = dir->i_mtime = current_time(dir); 678 f2fs_mark_inode_dirty_sync(dir, false); 679 680 if (inode) 681 f2fs_drop_nlink(dir, inode); 682 } 683 684 bool f2fs_empty_inline_dir(struct inode *dir) 685 { 686 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 687 struct page *ipage; 688 unsigned int bit_pos = 2; 689 void *inline_dentry; 690 struct f2fs_dentry_ptr d; 691 692 ipage = f2fs_get_node_page(sbi, dir->i_ino); 693 if (IS_ERR(ipage)) 694 return false; 695 696 inline_dentry = inline_data_addr(dir, ipage); 697 make_dentry_ptr_inline(dir, &d, inline_dentry); 698 699 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos); 700 701 f2fs_put_page(ipage, 1); 702 703 if (bit_pos < d.max) 704 return false; 705 706 return true; 707 } 708 709 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, 710 struct fscrypt_str *fstr) 711 { 712 struct inode *inode = file_inode(file); 713 struct page *ipage = NULL; 714 struct f2fs_dentry_ptr d; 715 void *inline_dentry = NULL; 716 int err; 717 718 make_dentry_ptr_inline(inode, &d, inline_dentry); 719 720 if (ctx->pos == d.max) 721 return 0; 722 723 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 724 if (IS_ERR(ipage)) 725 return PTR_ERR(ipage); 726 727 /* 728 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access 729 * ipage without page's lock held. 730 */ 731 unlock_page(ipage); 732 733 inline_dentry = inline_data_addr(inode, ipage); 734 735 make_dentry_ptr_inline(inode, &d, inline_dentry); 736 737 err = f2fs_fill_dentries(ctx, &d, 0, fstr); 738 if (!err) 739 ctx->pos = d.max; 740 741 f2fs_put_page(ipage, 0); 742 return err < 0 ? err : 0; 743 } 744 745 int f2fs_inline_data_fiemap(struct inode *inode, 746 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) 747 { 748 __u64 byteaddr, ilen; 749 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | 750 FIEMAP_EXTENT_LAST; 751 struct node_info ni; 752 struct page *ipage; 753 int err = 0; 754 755 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 756 if (IS_ERR(ipage)) 757 return PTR_ERR(ipage); 758 759 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) && 760 !f2fs_has_inline_data(inode)) { 761 err = -EAGAIN; 762 goto out; 763 } 764 765 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) { 766 err = -EAGAIN; 767 goto out; 768 } 769 770 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode)); 771 if (start >= ilen) 772 goto out; 773 if (start + len < ilen) 774 ilen = start + len; 775 ilen -= start; 776 777 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); 778 if (err) 779 goto out; 780 781 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; 782 byteaddr += (char *)inline_data_addr(inode, ipage) - 783 (char *)F2FS_INODE(ipage); 784 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); 785 trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err); 786 out: 787 f2fs_put_page(ipage, 1); 788 return err; 789 } 790