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9#include <linux/fs.h>
10#include <linux/f2fs_fs.h>
11
12#include "f2fs.h"
13#include "node.h"
14
15bool f2fs_may_inline_data(struct inode *inode)
16{
17 if (f2fs_is_atomic_file(inode))
18 return false;
19
20 if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
21 return false;
22
23 if (i_size_read(inode) > MAX_INLINE_DATA(inode))
24 return false;
25
26 if (f2fs_post_read_required(inode))
27 return false;
28
29 return true;
30}
31
32bool f2fs_may_inline_dentry(struct inode *inode)
33{
34 if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
35 return false;
36
37 if (!S_ISDIR(inode->i_mode))
38 return false;
39
40 return true;
41}
42
43void f2fs_do_read_inline_data(struct page *page, struct page *ipage)
44{
45 struct inode *inode = page->mapping->host;
46 void *src_addr, *dst_addr;
47
48 if (PageUptodate(page))
49 return;
50
51 f2fs_bug_on(F2FS_P_SB(page), page->index);
52
53 zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE);
54
55
56 src_addr = inline_data_addr(inode, ipage);
57 dst_addr = kmap_atomic(page);
58 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
59 flush_dcache_page(page);
60 kunmap_atomic(dst_addr);
61 if (!PageUptodate(page))
62 SetPageUptodate(page);
63}
64
65void f2fs_truncate_inline_inode(struct inode *inode,
66 struct page *ipage, u64 from)
67{
68 void *addr;
69
70 if (from >= MAX_INLINE_DATA(inode))
71 return;
72
73 addr = inline_data_addr(inode, ipage);
74
75 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
76 memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
77 set_page_dirty(ipage);
78
79 if (from == 0)
80 clear_inode_flag(inode, FI_DATA_EXIST);
81}
82
83int f2fs_read_inline_data(struct inode *inode, struct page *page)
84{
85 struct page *ipage;
86
87 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
88 if (IS_ERR(ipage)) {
89 unlock_page(page);
90 return PTR_ERR(ipage);
91 }
92
93 if (!f2fs_has_inline_data(inode)) {
94 f2fs_put_page(ipage, 1);
95 return -EAGAIN;
96 }
97
98 if (page->index)
99 zero_user_segment(page, 0, PAGE_SIZE);
100 else
101 f2fs_do_read_inline_data(page, ipage);
102
103 if (!PageUptodate(page))
104 SetPageUptodate(page);
105 f2fs_put_page(ipage, 1);
106 unlock_page(page);
107 return 0;
108}
109
110int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
111{
112 struct f2fs_io_info fio = {
113 .sbi = F2FS_I_SB(dn->inode),
114 .ino = dn->inode->i_ino,
115 .type = DATA,
116 .op = REQ_OP_WRITE,
117 .op_flags = REQ_SYNC | REQ_PRIO,
118 .page = page,
119 .encrypted_page = NULL,
120 .io_type = FS_DATA_IO,
121 };
122 struct node_info ni;
123 int dirty, err;
124
125 if (!f2fs_exist_data(dn->inode))
126 goto clear_out;
127
128 err = f2fs_reserve_block(dn, 0);
129 if (err)
130 return err;
131
132 err = f2fs_get_node_info(fio.sbi, dn->nid, &ni);
133 if (err) {
134 f2fs_truncate_data_blocks_range(dn, 1);
135 f2fs_put_dnode(dn);
136 return err;
137 }
138
139 fio.version = ni.version;
140
141 if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
142 f2fs_put_dnode(dn);
143 set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
144 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
145 __func__, dn->inode->i_ino, dn->data_blkaddr);
146 return -EFSCORRUPTED;
147 }
148
149 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
150
151 f2fs_do_read_inline_data(page, dn->inode_page);
152 set_page_dirty(page);
153
154
155 dirty = clear_page_dirty_for_io(page);
156
157
158 set_page_writeback(page);
159 ClearPageError(page);
160 fio.old_blkaddr = dn->data_blkaddr;
161 set_inode_flag(dn->inode, FI_HOT_DATA);
162 f2fs_outplace_write_data(dn, &fio);
163 f2fs_wait_on_page_writeback(page, DATA, true, true);
164 if (dirty) {
165 inode_dec_dirty_pages(dn->inode);
166 f2fs_remove_dirty_inode(dn->inode);
167 }
168
169
170 set_inode_flag(dn->inode, FI_APPEND_WRITE);
171
172
173 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
174 clear_inline_node(dn->inode_page);
175clear_out:
176 stat_dec_inline_inode(dn->inode);
177 clear_inode_flag(dn->inode, FI_INLINE_DATA);
178 f2fs_put_dnode(dn);
179 return 0;
180}
181
182int f2fs_convert_inline_inode(struct inode *inode)
183{
184 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
185 struct dnode_of_data dn;
186 struct page *ipage, *page;
187 int err = 0;
188
189 if (!f2fs_has_inline_data(inode))
190 return 0;
191
192 page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
193 if (!page)
194 return -ENOMEM;
195
196 f2fs_lock_op(sbi);
197
198 ipage = f2fs_get_node_page(sbi, inode->i_ino);
199 if (IS_ERR(ipage)) {
200 err = PTR_ERR(ipage);
201 goto out;
202 }
203
204 set_new_dnode(&dn, inode, ipage, ipage, 0);
205
206 if (f2fs_has_inline_data(inode))
207 err = f2fs_convert_inline_page(&dn, page);
208
209 f2fs_put_dnode(&dn);
210out:
211 f2fs_unlock_op(sbi);
212
213 f2fs_put_page(page, 1);
214
215 f2fs_balance_fs(sbi, dn.node_changed);
216
217 return err;
218}
219
220int f2fs_write_inline_data(struct inode *inode, struct page *page)
221{
222 void *src_addr, *dst_addr;
223 struct dnode_of_data dn;
224 int err;
225
226 set_new_dnode(&dn, inode, NULL, NULL, 0);
227 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
228 if (err)
229 return err;
230
231 if (!f2fs_has_inline_data(inode)) {
232 f2fs_put_dnode(&dn);
233 return -EAGAIN;
234 }
235
236 f2fs_bug_on(F2FS_I_SB(inode), page->index);
237
238 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true);
239 src_addr = kmap_atomic(page);
240 dst_addr = inline_data_addr(inode, dn.inode_page);
241 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
242 kunmap_atomic(src_addr);
243 set_page_dirty(dn.inode_page);
244
245 f2fs_clear_page_cache_dirty_tag(page);
246
247 set_inode_flag(inode, FI_APPEND_WRITE);
248 set_inode_flag(inode, FI_DATA_EXIST);
249
250 clear_inline_node(dn.inode_page);
251 f2fs_put_dnode(&dn);
252 return 0;
253}
254
255bool f2fs_recover_inline_data(struct inode *inode, struct page *npage)
256{
257 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
258 struct f2fs_inode *ri = NULL;
259 void *src_addr, *dst_addr;
260 struct page *ipage;
261
262
263
264
265
266
267
268
269
270 if (IS_INODE(npage))
271 ri = F2FS_INODE(npage);
272
273 if (f2fs_has_inline_data(inode) &&
274 ri && (ri->i_inline & F2FS_INLINE_DATA)) {
275process_inline:
276 ipage = f2fs_get_node_page(sbi, inode->i_ino);
277 f2fs_bug_on(sbi, IS_ERR(ipage));
278
279 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
280
281 src_addr = inline_data_addr(inode, npage);
282 dst_addr = inline_data_addr(inode, ipage);
283 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
284
285 set_inode_flag(inode, FI_INLINE_DATA);
286 set_inode_flag(inode, FI_DATA_EXIST);
287
288 set_page_dirty(ipage);
289 f2fs_put_page(ipage, 1);
290 return true;
291 }
292
293 if (f2fs_has_inline_data(inode)) {
294 ipage = f2fs_get_node_page(sbi, inode->i_ino);
295 f2fs_bug_on(sbi, IS_ERR(ipage));
296 f2fs_truncate_inline_inode(inode, ipage, 0);
297 clear_inode_flag(inode, FI_INLINE_DATA);
298 f2fs_put_page(ipage, 1);
299 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
300 if (f2fs_truncate_blocks(inode, 0, false))
301 return false;
302 goto process_inline;
303 }
304 return false;
305}
306
307struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
308 struct fscrypt_name *fname, struct page **res_page)
309{
310 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
311 struct qstr name = FSTR_TO_QSTR(&fname->disk_name);
312 struct f2fs_dir_entry *de;
313 struct f2fs_dentry_ptr d;
314 struct page *ipage;
315 void *inline_dentry;
316 f2fs_hash_t namehash;
317
318 ipage = f2fs_get_node_page(sbi, dir->i_ino);
319 if (IS_ERR(ipage)) {
320 *res_page = ipage;
321 return NULL;
322 }
323
324 namehash = f2fs_dentry_hash(dir, &name, fname);
325
326 inline_dentry = inline_data_addr(dir, ipage);
327
328 make_dentry_ptr_inline(dir, &d, inline_dentry);
329 de = f2fs_find_target_dentry(fname, namehash, NULL, &d);
330 unlock_page(ipage);
331 if (de)
332 *res_page = ipage;
333 else
334 f2fs_put_page(ipage, 0);
335
336 return de;
337}
338
339int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
340 struct page *ipage)
341{
342 struct f2fs_dentry_ptr d;
343 void *inline_dentry;
344
345 inline_dentry = inline_data_addr(inode, ipage);
346
347 make_dentry_ptr_inline(inode, &d, inline_dentry);
348 f2fs_do_make_empty_dir(inode, parent, &d);
349
350 set_page_dirty(ipage);
351
352
353 if (i_size_read(inode) < MAX_INLINE_DATA(inode))
354 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
355 return 0;
356}
357
358
359
360
361
362static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
363 void *inline_dentry)
364{
365 struct page *page;
366 struct dnode_of_data dn;
367 struct f2fs_dentry_block *dentry_blk;
368 struct f2fs_dentry_ptr src, dst;
369 int err;
370
371 page = f2fs_grab_cache_page(dir->i_mapping, 0, true);
372 if (!page) {
373 f2fs_put_page(ipage, 1);
374 return -ENOMEM;
375 }
376
377 set_new_dnode(&dn, dir, ipage, NULL, 0);
378 err = f2fs_reserve_block(&dn, 0);
379 if (err)
380 goto out;
381
382 if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
383 f2fs_put_dnode(&dn);
384 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
385 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
386 __func__, dir->i_ino, dn.data_blkaddr);
387 err = -EFSCORRUPTED;
388 goto out;
389 }
390
391 f2fs_wait_on_page_writeback(page, DATA, true, true);
392
393 dentry_blk = page_address(page);
394
395 make_dentry_ptr_inline(dir, &src, inline_dentry);
396 make_dentry_ptr_block(dir, &dst, dentry_blk);
397
398
399 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
400 memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap);
401
402
403
404
405
406
407 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
408 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
409
410 if (!PageUptodate(page))
411 SetPageUptodate(page);
412 set_page_dirty(page);
413
414
415 f2fs_truncate_inline_inode(dir, ipage, 0);
416
417 stat_dec_inline_dir(dir);
418 clear_inode_flag(dir, FI_INLINE_DENTRY);
419
420
421
422
423
424 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
425 !f2fs_has_inline_xattr(dir))
426 F2FS_I(dir)->i_inline_xattr_size = 0;
427
428 f2fs_i_depth_write(dir, 1);
429 if (i_size_read(dir) < PAGE_SIZE)
430 f2fs_i_size_write(dir, PAGE_SIZE);
431out:
432 f2fs_put_page(page, 1);
433 return err;
434}
435
436static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
437{
438 struct f2fs_dentry_ptr d;
439 unsigned long bit_pos = 0;
440 int err = 0;
441
442 make_dentry_ptr_inline(dir, &d, inline_dentry);
443
444 while (bit_pos < d.max) {
445 struct f2fs_dir_entry *de;
446 struct qstr new_name;
447 nid_t ino;
448 umode_t fake_mode;
449
450 if (!test_bit_le(bit_pos, d.bitmap)) {
451 bit_pos++;
452 continue;
453 }
454
455 de = &d.dentry[bit_pos];
456
457 if (unlikely(!de->name_len)) {
458 bit_pos++;
459 continue;
460 }
461
462 new_name.name = d.filename[bit_pos];
463 new_name.len = le16_to_cpu(de->name_len);
464
465 ino = le32_to_cpu(de->ino);
466 fake_mode = f2fs_get_de_type(de) << S_SHIFT;
467
468 err = f2fs_add_regular_entry(dir, &new_name, NULL, NULL,
469 ino, fake_mode);
470 if (err)
471 goto punch_dentry_pages;
472
473 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
474 }
475 return 0;
476punch_dentry_pages:
477 truncate_inode_pages(&dir->i_data, 0);
478 f2fs_truncate_blocks(dir, 0, false);
479 f2fs_remove_dirty_inode(dir);
480 return err;
481}
482
483static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
484 void *inline_dentry)
485{
486 void *backup_dentry;
487 int err;
488
489 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
490 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
491 if (!backup_dentry) {
492 f2fs_put_page(ipage, 1);
493 return -ENOMEM;
494 }
495
496 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
497 f2fs_truncate_inline_inode(dir, ipage, 0);
498
499 unlock_page(ipage);
500
501 err = f2fs_add_inline_entries(dir, backup_dentry);
502 if (err)
503 goto recover;
504
505 lock_page(ipage);
506
507 stat_dec_inline_dir(dir);
508 clear_inode_flag(dir, FI_INLINE_DENTRY);
509
510
511
512
513
514 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
515 !f2fs_has_inline_xattr(dir))
516 F2FS_I(dir)->i_inline_xattr_size = 0;
517
518 kvfree(backup_dentry);
519 return 0;
520recover:
521 lock_page(ipage);
522 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
523 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
524 f2fs_i_depth_write(dir, 0);
525 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
526 set_page_dirty(ipage);
527 f2fs_put_page(ipage, 1);
528
529 kvfree(backup_dentry);
530 return err;
531}
532
533static int do_convert_inline_dir(struct inode *dir, struct page *ipage,
534 void *inline_dentry)
535{
536 if (!F2FS_I(dir)->i_dir_level)
537 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
538 else
539 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
540}
541
542int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry)
543{
544 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
545 struct page *ipage;
546 struct fscrypt_name fname;
547 void *inline_dentry = NULL;
548 int err = 0;
549
550 if (!f2fs_has_inline_dentry(dir))
551 return 0;
552
553 f2fs_lock_op(sbi);
554
555 err = fscrypt_setup_filename(dir, &dentry->d_name, 0, &fname);
556 if (err)
557 goto out;
558
559 ipage = f2fs_get_node_page(sbi, dir->i_ino);
560 if (IS_ERR(ipage)) {
561 err = PTR_ERR(ipage);
562 goto out;
563 }
564
565 if (f2fs_has_enough_room(dir, ipage, &fname)) {
566 f2fs_put_page(ipage, 1);
567 goto out;
568 }
569
570 inline_dentry = inline_data_addr(dir, ipage);
571
572 err = do_convert_inline_dir(dir, ipage, inline_dentry);
573 if (!err)
574 f2fs_put_page(ipage, 1);
575out:
576 f2fs_unlock_op(sbi);
577 return err;
578}
579
580int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
581 const struct qstr *orig_name,
582 struct inode *inode, nid_t ino, umode_t mode)
583{
584 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
585 struct page *ipage;
586 unsigned int bit_pos;
587 f2fs_hash_t name_hash;
588 void *inline_dentry = NULL;
589 struct f2fs_dentry_ptr d;
590 int slots = GET_DENTRY_SLOTS(new_name->len);
591 struct page *page = NULL;
592 int err = 0;
593
594 ipage = f2fs_get_node_page(sbi, dir->i_ino);
595 if (IS_ERR(ipage))
596 return PTR_ERR(ipage);
597
598 inline_dentry = inline_data_addr(dir, ipage);
599 make_dentry_ptr_inline(dir, &d, inline_dentry);
600
601 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
602 if (bit_pos >= d.max) {
603 err = do_convert_inline_dir(dir, ipage, inline_dentry);
604 if (err)
605 return err;
606 err = -EAGAIN;
607 goto out;
608 }
609
610 if (inode) {
611 down_write(&F2FS_I(inode)->i_sem);
612 page = f2fs_init_inode_metadata(inode, dir, new_name,
613 orig_name, ipage);
614 if (IS_ERR(page)) {
615 err = PTR_ERR(page);
616 goto fail;
617 }
618 }
619
620 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
621
622 name_hash = f2fs_dentry_hash(dir, new_name, NULL);
623 f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos);
624
625 set_page_dirty(ipage);
626
627
628 if (inode) {
629 f2fs_i_pino_write(inode, dir->i_ino);
630
631
632 if (is_inode_flag_set(inode, FI_NEW_INODE))
633 f2fs_update_inode(inode, page);
634
635 f2fs_put_page(page, 1);
636 }
637
638 f2fs_update_parent_metadata(dir, inode, 0);
639fail:
640 if (inode)
641 up_write(&F2FS_I(inode)->i_sem);
642out:
643 f2fs_put_page(ipage, 1);
644 return err;
645}
646
647void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
648 struct inode *dir, struct inode *inode)
649{
650 struct f2fs_dentry_ptr d;
651 void *inline_dentry;
652 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
653 unsigned int bit_pos;
654 int i;
655
656 lock_page(page);
657 f2fs_wait_on_page_writeback(page, NODE, true, true);
658
659 inline_dentry = inline_data_addr(dir, page);
660 make_dentry_ptr_inline(dir, &d, inline_dentry);
661
662 bit_pos = dentry - d.dentry;
663 for (i = 0; i < slots; i++)
664 __clear_bit_le(bit_pos + i, d.bitmap);
665
666 set_page_dirty(page);
667 f2fs_put_page(page, 1);
668
669 dir->i_ctime = dir->i_mtime = current_time(dir);
670 f2fs_mark_inode_dirty_sync(dir, false);
671
672 if (inode)
673 f2fs_drop_nlink(dir, inode);
674}
675
676bool f2fs_empty_inline_dir(struct inode *dir)
677{
678 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
679 struct page *ipage;
680 unsigned int bit_pos = 2;
681 void *inline_dentry;
682 struct f2fs_dentry_ptr d;
683
684 ipage = f2fs_get_node_page(sbi, dir->i_ino);
685 if (IS_ERR(ipage))
686 return false;
687
688 inline_dentry = inline_data_addr(dir, ipage);
689 make_dentry_ptr_inline(dir, &d, inline_dentry);
690
691 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
692
693 f2fs_put_page(ipage, 1);
694
695 if (bit_pos < d.max)
696 return false;
697
698 return true;
699}
700
701int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
702 struct fscrypt_str *fstr)
703{
704 struct inode *inode = file_inode(file);
705 struct page *ipage = NULL;
706 struct f2fs_dentry_ptr d;
707 void *inline_dentry = NULL;
708 int err;
709
710 make_dentry_ptr_inline(inode, &d, inline_dentry);
711
712 if (ctx->pos == d.max)
713 return 0;
714
715 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
716 if (IS_ERR(ipage))
717 return PTR_ERR(ipage);
718
719
720
721
722
723 unlock_page(ipage);
724
725 inline_dentry = inline_data_addr(inode, ipage);
726
727 make_dentry_ptr_inline(inode, &d, inline_dentry);
728
729 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
730 if (!err)
731 ctx->pos = d.max;
732
733 f2fs_put_page(ipage, 0);
734 return err < 0 ? err : 0;
735}
736
737int f2fs_inline_data_fiemap(struct inode *inode,
738 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
739{
740 __u64 byteaddr, ilen;
741 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
742 FIEMAP_EXTENT_LAST;
743 struct node_info ni;
744 struct page *ipage;
745 int err = 0;
746
747 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
748 if (IS_ERR(ipage))
749 return PTR_ERR(ipage);
750
751 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
752 !f2fs_has_inline_data(inode)) {
753 err = -EAGAIN;
754 goto out;
755 }
756
757 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
758 err = -EAGAIN;
759 goto out;
760 }
761
762 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
763 if (start >= ilen)
764 goto out;
765 if (start + len < ilen)
766 ilen = start + len;
767 ilen -= start;
768
769 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
770 if (err)
771 goto out;
772
773 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
774 byteaddr += (char *)inline_data_addr(inode, ipage) -
775 (char *)F2FS_INODE(ipage);
776 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
777out:
778 f2fs_put_page(ipage, 1);
779 return err;
780}
781
