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_page_private_inline(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 f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb)) 193 return 0; 194 195 err = f2fs_dquot_initialize(inode); 196 if (err) 197 return err; 198 199 page = f2fs_grab_cache_page(inode->i_mapping, 0, false); 200 if (!page) 201 return -ENOMEM; 202 203 f2fs_lock_op(sbi); 204 205 ipage = f2fs_get_node_page(sbi, inode->i_ino); 206 if (IS_ERR(ipage)) { 207 err = PTR_ERR(ipage); 208 goto out; 209 } 210 211 set_new_dnode(&dn, inode, ipage, ipage, 0); 212 213 if (f2fs_has_inline_data(inode)) 214 err = f2fs_convert_inline_page(&dn, page); 215 216 f2fs_put_dnode(&dn); 217 out: 218 f2fs_unlock_op(sbi); 219 220 f2fs_put_page(page, 1); 221 222 if (!err) 223 f2fs_balance_fs(sbi, dn.node_changed); 224 225 return err; 226 } 227 228 int f2fs_write_inline_data(struct inode *inode, struct page *page) 229 { 230 void *src_addr, *dst_addr; 231 struct dnode_of_data dn; 232 int err; 233 234 set_new_dnode(&dn, inode, NULL, NULL, 0); 235 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE); 236 if (err) 237 return err; 238 239 if (!f2fs_has_inline_data(inode)) { 240 f2fs_put_dnode(&dn); 241 return -EAGAIN; 242 } 243 244 f2fs_bug_on(F2FS_I_SB(inode), page->index); 245 246 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true); 247 src_addr = kmap_atomic(page); 248 dst_addr = inline_data_addr(inode, dn.inode_page); 249 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); 250 kunmap_atomic(src_addr); 251 set_page_dirty(dn.inode_page); 252 253 f2fs_clear_page_cache_dirty_tag(page); 254 255 set_inode_flag(inode, FI_APPEND_WRITE); 256 set_inode_flag(inode, FI_DATA_EXIST); 257 258 clear_page_private_inline(dn.inode_page); 259 f2fs_put_dnode(&dn); 260 return 0; 261 } 262 263 int f2fs_recover_inline_data(struct inode *inode, struct page *npage) 264 { 265 struct f2fs_sb_info *sbi = F2FS_I_SB(inode); 266 struct f2fs_inode *ri = NULL; 267 void *src_addr, *dst_addr; 268 struct page *ipage; 269 270 /* 271 * The inline_data recovery policy is as follows. 272 * [prev.] [next] of inline_data flag 273 * o o -> recover inline_data 274 * o x -> remove inline_data, and then recover data blocks 275 * x o -> remove data blocks, and then recover inline_data 276 * x x -> recover data blocks 277 */ 278 if (IS_INODE(npage)) 279 ri = F2FS_INODE(npage); 280 281 if (f2fs_has_inline_data(inode) && 282 ri && (ri->i_inline & F2FS_INLINE_DATA)) { 283 process_inline: 284 ipage = f2fs_get_node_page(sbi, inode->i_ino); 285 if (IS_ERR(ipage)) 286 return PTR_ERR(ipage); 287 288 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 289 290 src_addr = inline_data_addr(inode, npage); 291 dst_addr = inline_data_addr(inode, ipage); 292 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode)); 293 294 set_inode_flag(inode, FI_INLINE_DATA); 295 set_inode_flag(inode, FI_DATA_EXIST); 296 297 set_page_dirty(ipage); 298 f2fs_put_page(ipage, 1); 299 return 1; 300 } 301 302 if (f2fs_has_inline_data(inode)) { 303 ipage = f2fs_get_node_page(sbi, inode->i_ino); 304 if (IS_ERR(ipage)) 305 return PTR_ERR(ipage); 306 f2fs_truncate_inline_inode(inode, ipage, 0); 307 stat_dec_inline_inode(inode); 308 clear_inode_flag(inode, FI_INLINE_DATA); 309 f2fs_put_page(ipage, 1); 310 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) { 311 int ret; 312 313 ret = f2fs_truncate_blocks(inode, 0, false); 314 if (ret) 315 return ret; 316 stat_inc_inline_inode(inode); 317 goto process_inline; 318 } 319 return 0; 320 } 321 322 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir, 323 const struct f2fs_filename *fname, 324 struct page **res_page) 325 { 326 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb); 327 struct f2fs_dir_entry *de; 328 struct f2fs_dentry_ptr d; 329 struct page *ipage; 330 void *inline_dentry; 331 332 ipage = f2fs_get_node_page(sbi, dir->i_ino); 333 if (IS_ERR(ipage)) { 334 *res_page = ipage; 335 return NULL; 336 } 337 338 inline_dentry = inline_data_addr(dir, ipage); 339 340 make_dentry_ptr_inline(dir, &d, inline_dentry); 341 de = f2fs_find_target_dentry(&d, fname, NULL); 342 unlock_page(ipage); 343 if (IS_ERR(de)) { 344 *res_page = ERR_CAST(de); 345 de = NULL; 346 } 347 if (de) 348 *res_page = ipage; 349 else 350 f2fs_put_page(ipage, 0); 351 352 return de; 353 } 354 355 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent, 356 struct page *ipage) 357 { 358 struct f2fs_dentry_ptr d; 359 void *inline_dentry; 360 361 inline_dentry = inline_data_addr(inode, ipage); 362 363 make_dentry_ptr_inline(inode, &d, inline_dentry); 364 f2fs_do_make_empty_dir(inode, parent, &d); 365 366 set_page_dirty(ipage); 367 368 /* update i_size to MAX_INLINE_DATA */ 369 if (i_size_read(inode) < MAX_INLINE_DATA(inode)) 370 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode)); 371 return 0; 372 } 373 374 /* 375 * NOTE: ipage is grabbed by caller, but if any error occurs, we should 376 * release ipage in this function. 377 */ 378 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage, 379 void *inline_dentry) 380 { 381 struct page *page; 382 struct dnode_of_data dn; 383 struct f2fs_dentry_block *dentry_blk; 384 struct f2fs_dentry_ptr src, dst; 385 int err; 386 387 page = f2fs_grab_cache_page(dir->i_mapping, 0, true); 388 if (!page) { 389 f2fs_put_page(ipage, 1); 390 return -ENOMEM; 391 } 392 393 set_new_dnode(&dn, dir, ipage, NULL, 0); 394 err = f2fs_reserve_block(&dn, 0); 395 if (err) 396 goto out; 397 398 if (unlikely(dn.data_blkaddr != NEW_ADDR)) { 399 f2fs_put_dnode(&dn); 400 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK); 401 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.", 402 __func__, dir->i_ino, dn.data_blkaddr); 403 err = -EFSCORRUPTED; 404 goto out; 405 } 406 407 f2fs_wait_on_page_writeback(page, DATA, true, true); 408 409 dentry_blk = page_address(page); 410 411 make_dentry_ptr_inline(dir, &src, inline_dentry); 412 make_dentry_ptr_block(dir, &dst, dentry_blk); 413 414 /* copy data from inline dentry block to new dentry block */ 415 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap); 416 memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap); 417 /* 418 * we do not need to zero out remainder part of dentry and filename 419 * field, since we have used bitmap for marking the usage status of 420 * them, besides, we can also ignore copying/zeroing reserved space 421 * of dentry block, because them haven't been used so far. 422 */ 423 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max); 424 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN); 425 426 if (!PageUptodate(page)) 427 SetPageUptodate(page); 428 set_page_dirty(page); 429 430 /* clear inline dir and flag after data writeback */ 431 f2fs_truncate_inline_inode(dir, ipage, 0); 432 433 stat_dec_inline_dir(dir); 434 clear_inode_flag(dir, FI_INLINE_DENTRY); 435 436 /* 437 * should retrieve reserved space which was used to keep 438 * inline_dentry's structure for backward compatibility. 439 */ 440 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && 441 !f2fs_has_inline_xattr(dir)) 442 F2FS_I(dir)->i_inline_xattr_size = 0; 443 444 f2fs_i_depth_write(dir, 1); 445 if (i_size_read(dir) < PAGE_SIZE) 446 f2fs_i_size_write(dir, PAGE_SIZE); 447 out: 448 f2fs_put_page(page, 1); 449 return err; 450 } 451 452 static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry) 453 { 454 struct f2fs_dentry_ptr d; 455 unsigned long bit_pos = 0; 456 int err = 0; 457 458 make_dentry_ptr_inline(dir, &d, inline_dentry); 459 460 while (bit_pos < d.max) { 461 struct f2fs_dir_entry *de; 462 struct f2fs_filename fname; 463 nid_t ino; 464 umode_t fake_mode; 465 466 if (!test_bit_le(bit_pos, d.bitmap)) { 467 bit_pos++; 468 continue; 469 } 470 471 de = &d.dentry[bit_pos]; 472 473 if (unlikely(!de->name_len)) { 474 bit_pos++; 475 continue; 476 } 477 478 /* 479 * We only need the disk_name and hash to move the dentry. 480 * We don't need the original or casefolded filenames. 481 */ 482 memset(&fname, 0, sizeof(fname)); 483 fname.disk_name.name = d.filename[bit_pos]; 484 fname.disk_name.len = le16_to_cpu(de->name_len); 485 fname.hash = de->hash_code; 486 487 ino = le32_to_cpu(de->ino); 488 fake_mode = f2fs_get_de_type(de) << S_SHIFT; 489 490 err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode); 491 if (err) 492 goto punch_dentry_pages; 493 494 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len)); 495 } 496 return 0; 497 punch_dentry_pages: 498 truncate_inode_pages(&dir->i_data, 0); 499 f2fs_truncate_blocks(dir, 0, false); 500 f2fs_remove_dirty_inode(dir); 501 return err; 502 } 503 504 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage, 505 void *inline_dentry) 506 { 507 void *backup_dentry; 508 int err; 509 510 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir), 511 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO); 512 if (!backup_dentry) { 513 f2fs_put_page(ipage, 1); 514 return -ENOMEM; 515 } 516 517 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir)); 518 f2fs_truncate_inline_inode(dir, ipage, 0); 519 520 unlock_page(ipage); 521 522 err = f2fs_add_inline_entries(dir, backup_dentry); 523 if (err) 524 goto recover; 525 526 lock_page(ipage); 527 528 stat_dec_inline_dir(dir); 529 clear_inode_flag(dir, FI_INLINE_DENTRY); 530 531 /* 532 * should retrieve reserved space which was used to keep 533 * inline_dentry's structure for backward compatibility. 534 */ 535 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) && 536 !f2fs_has_inline_xattr(dir)) 537 F2FS_I(dir)->i_inline_xattr_size = 0; 538 539 kfree(backup_dentry); 540 return 0; 541 recover: 542 lock_page(ipage); 543 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 544 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir)); 545 f2fs_i_depth_write(dir, 0); 546 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir)); 547 set_page_dirty(ipage); 548 f2fs_put_page(ipage, 1); 549 550 kfree(backup_dentry); 551 return err; 552 } 553 554 static int do_convert_inline_dir(struct inode *dir, struct page *ipage, 555 void *inline_dentry) 556 { 557 if (!F2FS_I(dir)->i_dir_level) 558 return f2fs_move_inline_dirents(dir, ipage, inline_dentry); 559 else 560 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry); 561 } 562 563 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry) 564 { 565 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 566 struct page *ipage; 567 struct f2fs_filename fname; 568 void *inline_dentry = NULL; 569 int err = 0; 570 571 if (!f2fs_has_inline_dentry(dir)) 572 return 0; 573 574 f2fs_lock_op(sbi); 575 576 err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname); 577 if (err) 578 goto out; 579 580 ipage = f2fs_get_node_page(sbi, dir->i_ino); 581 if (IS_ERR(ipage)) { 582 err = PTR_ERR(ipage); 583 goto out_fname; 584 } 585 586 if (f2fs_has_enough_room(dir, ipage, &fname)) { 587 f2fs_put_page(ipage, 1); 588 goto out_fname; 589 } 590 591 inline_dentry = inline_data_addr(dir, ipage); 592 593 err = do_convert_inline_dir(dir, ipage, inline_dentry); 594 if (!err) 595 f2fs_put_page(ipage, 1); 596 out_fname: 597 f2fs_free_filename(&fname); 598 out: 599 f2fs_unlock_op(sbi); 600 return err; 601 } 602 603 int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname, 604 struct inode *inode, nid_t ino, umode_t mode) 605 { 606 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 607 struct page *ipage; 608 unsigned int bit_pos; 609 void *inline_dentry = NULL; 610 struct f2fs_dentry_ptr d; 611 int slots = GET_DENTRY_SLOTS(fname->disk_name.len); 612 struct page *page = NULL; 613 int err = 0; 614 615 ipage = f2fs_get_node_page(sbi, dir->i_ino); 616 if (IS_ERR(ipage)) 617 return PTR_ERR(ipage); 618 619 inline_dentry = inline_data_addr(dir, ipage); 620 make_dentry_ptr_inline(dir, &d, inline_dentry); 621 622 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max); 623 if (bit_pos >= d.max) { 624 err = do_convert_inline_dir(dir, ipage, inline_dentry); 625 if (err) 626 return err; 627 err = -EAGAIN; 628 goto out; 629 } 630 631 if (inode) { 632 down_write(&F2FS_I(inode)->i_sem); 633 page = f2fs_init_inode_metadata(inode, dir, fname, ipage); 634 if (IS_ERR(page)) { 635 err = PTR_ERR(page); 636 goto fail; 637 } 638 } 639 640 f2fs_wait_on_page_writeback(ipage, NODE, true, true); 641 642 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash, 643 bit_pos); 644 645 set_page_dirty(ipage); 646 647 /* we don't need to mark_inode_dirty now */ 648 if (inode) { 649 f2fs_i_pino_write(inode, dir->i_ino); 650 651 /* synchronize inode page's data from inode cache */ 652 if (is_inode_flag_set(inode, FI_NEW_INODE)) 653 f2fs_update_inode(inode, page); 654 655 f2fs_put_page(page, 1); 656 } 657 658 f2fs_update_parent_metadata(dir, inode, 0); 659 fail: 660 if (inode) 661 up_write(&F2FS_I(inode)->i_sem); 662 out: 663 f2fs_put_page(ipage, 1); 664 return err; 665 } 666 667 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page, 668 struct inode *dir, struct inode *inode) 669 { 670 struct f2fs_dentry_ptr d; 671 void *inline_dentry; 672 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len)); 673 unsigned int bit_pos; 674 int i; 675 676 lock_page(page); 677 f2fs_wait_on_page_writeback(page, NODE, true, true); 678 679 inline_dentry = inline_data_addr(dir, page); 680 make_dentry_ptr_inline(dir, &d, inline_dentry); 681 682 bit_pos = dentry - d.dentry; 683 for (i = 0; i < slots; i++) 684 __clear_bit_le(bit_pos + i, d.bitmap); 685 686 set_page_dirty(page); 687 f2fs_put_page(page, 1); 688 689 dir->i_ctime = dir->i_mtime = current_time(dir); 690 f2fs_mark_inode_dirty_sync(dir, false); 691 692 if (inode) 693 f2fs_drop_nlink(dir, inode); 694 } 695 696 bool f2fs_empty_inline_dir(struct inode *dir) 697 { 698 struct f2fs_sb_info *sbi = F2FS_I_SB(dir); 699 struct page *ipage; 700 unsigned int bit_pos = 2; 701 void *inline_dentry; 702 struct f2fs_dentry_ptr d; 703 704 ipage = f2fs_get_node_page(sbi, dir->i_ino); 705 if (IS_ERR(ipage)) 706 return false; 707 708 inline_dentry = inline_data_addr(dir, ipage); 709 make_dentry_ptr_inline(dir, &d, inline_dentry); 710 711 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos); 712 713 f2fs_put_page(ipage, 1); 714 715 if (bit_pos < d.max) 716 return false; 717 718 return true; 719 } 720 721 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx, 722 struct fscrypt_str *fstr) 723 { 724 struct inode *inode = file_inode(file); 725 struct page *ipage = NULL; 726 struct f2fs_dentry_ptr d; 727 void *inline_dentry = NULL; 728 int err; 729 730 make_dentry_ptr_inline(inode, &d, inline_dentry); 731 732 if (ctx->pos == d.max) 733 return 0; 734 735 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 736 if (IS_ERR(ipage)) 737 return PTR_ERR(ipage); 738 739 /* 740 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access 741 * ipage without page's lock held. 742 */ 743 unlock_page(ipage); 744 745 inline_dentry = inline_data_addr(inode, ipage); 746 747 make_dentry_ptr_inline(inode, &d, inline_dentry); 748 749 err = f2fs_fill_dentries(ctx, &d, 0, fstr); 750 if (!err) 751 ctx->pos = d.max; 752 753 f2fs_put_page(ipage, 0); 754 return err < 0 ? err : 0; 755 } 756 757 int f2fs_inline_data_fiemap(struct inode *inode, 758 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len) 759 { 760 __u64 byteaddr, ilen; 761 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED | 762 FIEMAP_EXTENT_LAST; 763 struct node_info ni; 764 struct page *ipage; 765 int err = 0; 766 767 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino); 768 if (IS_ERR(ipage)) 769 return PTR_ERR(ipage); 770 771 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) && 772 !f2fs_has_inline_data(inode)) { 773 err = -EAGAIN; 774 goto out; 775 } 776 777 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) { 778 err = -EAGAIN; 779 goto out; 780 } 781 782 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode)); 783 if (start >= ilen) 784 goto out; 785 if (start + len < ilen) 786 ilen = start + len; 787 ilen -= start; 788 789 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni); 790 if (err) 791 goto out; 792 793 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits; 794 byteaddr += (char *)inline_data_addr(inode, ipage) - 795 (char *)F2FS_INODE(ipage); 796 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags); 797 trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err); 798 out: 799 f2fs_put_page(ipage, 1); 800 return err; 801 } 802