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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_put_dnode(dn);
135 return err;
136 }
137
138 fio.version = ni.version;
139
140 if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
141 f2fs_put_dnode(dn);
142 set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
143 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
144 __func__, dn->inode->i_ino, dn->data_blkaddr);
145 return -EFSCORRUPTED;
146 }
147
148 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
149
150 f2fs_do_read_inline_data(page, dn->inode_page);
151 set_page_dirty(page);
152
153
154 dirty = clear_page_dirty_for_io(page);
155
156
157 set_page_writeback(page);
158 ClearPageError(page);
159 fio.old_blkaddr = dn->data_blkaddr;
160 set_inode_flag(dn->inode, FI_HOT_DATA);
161 f2fs_outplace_write_data(dn, &fio);
162 f2fs_wait_on_page_writeback(page, DATA, true, true);
163 if (dirty) {
164 inode_dec_dirty_pages(dn->inode);
165 f2fs_remove_dirty_inode(dn->inode);
166 }
167
168
169 set_inode_flag(dn->inode, FI_APPEND_WRITE);
170
171
172 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
173 clear_inline_node(dn->inode_page);
174clear_out:
175 stat_dec_inline_inode(dn->inode);
176 clear_inode_flag(dn->inode, FI_INLINE_DATA);
177 f2fs_put_dnode(dn);
178 return 0;
179}
180
181int f2fs_convert_inline_inode(struct inode *inode)
182{
183 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
184 struct dnode_of_data dn;
185 struct page *ipage, *page;
186 int err = 0;
187
188 if (!f2fs_has_inline_data(inode))
189 return 0;
190
191 page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
192 if (!page)
193 return -ENOMEM;
194
195 f2fs_lock_op(sbi);
196
197 ipage = f2fs_get_node_page(sbi, inode->i_ino);
198 if (IS_ERR(ipage)) {
199 err = PTR_ERR(ipage);
200 goto out;
201 }
202
203 set_new_dnode(&dn, inode, ipage, ipage, 0);
204
205 if (f2fs_has_inline_data(inode))
206 err = f2fs_convert_inline_page(&dn, page);
207
208 f2fs_put_dnode(&dn);
209out:
210 f2fs_unlock_op(sbi);
211
212 f2fs_put_page(page, 1);
213
214 f2fs_balance_fs(sbi, dn.node_changed);
215
216 return err;
217}
218
219int f2fs_write_inline_data(struct inode *inode, struct page *page)
220{
221 void *src_addr, *dst_addr;
222 struct dnode_of_data dn;
223 int err;
224
225 set_new_dnode(&dn, inode, NULL, NULL, 0);
226 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
227 if (err)
228 return err;
229
230 if (!f2fs_has_inline_data(inode)) {
231 f2fs_put_dnode(&dn);
232 return -EAGAIN;
233 }
234
235 f2fs_bug_on(F2FS_I_SB(inode), page->index);
236
237 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true);
238 src_addr = kmap_atomic(page);
239 dst_addr = inline_data_addr(inode, dn.inode_page);
240 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
241 kunmap_atomic(src_addr);
242 set_page_dirty(dn.inode_page);
243
244 f2fs_clear_page_cache_dirty_tag(page);
245
246 set_inode_flag(inode, FI_APPEND_WRITE);
247 set_inode_flag(inode, FI_DATA_EXIST);
248
249 clear_inline_node(dn.inode_page);
250 f2fs_put_dnode(&dn);
251 return 0;
252}
253
254bool f2fs_recover_inline_data(struct inode *inode, struct page *npage)
255{
256 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
257 struct f2fs_inode *ri = NULL;
258 void *src_addr, *dst_addr;
259 struct page *ipage;
260
261
262
263
264
265
266
267
268
269 if (IS_INODE(npage))
270 ri = F2FS_INODE(npage);
271
272 if (f2fs_has_inline_data(inode) &&
273 ri && (ri->i_inline & F2FS_INLINE_DATA)) {
274process_inline:
275 ipage = f2fs_get_node_page(sbi, inode->i_ino);
276 f2fs_bug_on(sbi, IS_ERR(ipage));
277
278 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
279
280 src_addr = inline_data_addr(inode, npage);
281 dst_addr = inline_data_addr(inode, ipage);
282 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
283
284 set_inode_flag(inode, FI_INLINE_DATA);
285 set_inode_flag(inode, FI_DATA_EXIST);
286
287 set_page_dirty(ipage);
288 f2fs_put_page(ipage, 1);
289 return true;
290 }
291
292 if (f2fs_has_inline_data(inode)) {
293 ipage = f2fs_get_node_page(sbi, inode->i_ino);
294 f2fs_bug_on(sbi, IS_ERR(ipage));
295 f2fs_truncate_inline_inode(inode, ipage, 0);
296 clear_inode_flag(inode, FI_INLINE_DATA);
297 f2fs_put_page(ipage, 1);
298 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
299 if (f2fs_truncate_blocks(inode, 0, false))
300 return false;
301 goto process_inline;
302 }
303 return false;
304}
305
306struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
307 struct fscrypt_name *fname, struct page **res_page)
308{
309 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
310 struct qstr name = FSTR_TO_QSTR(&fname->disk_name);
311 struct f2fs_dir_entry *de;
312 struct f2fs_dentry_ptr d;
313 struct page *ipage;
314 void *inline_dentry;
315 f2fs_hash_t namehash;
316
317 ipage = f2fs_get_node_page(sbi, dir->i_ino);
318 if (IS_ERR(ipage)) {
319 *res_page = ipage;
320 return NULL;
321 }
322
323 namehash = f2fs_dentry_hash(&name, fname);
324
325 inline_dentry = inline_data_addr(dir, ipage);
326
327 make_dentry_ptr_inline(dir, &d, inline_dentry);
328 de = f2fs_find_target_dentry(fname, namehash, NULL, &d);
329 unlock_page(ipage);
330 if (de)
331 *res_page = ipage;
332 else
333 f2fs_put_page(ipage, 0);
334
335 return de;
336}
337
338int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
339 struct page *ipage)
340{
341 struct f2fs_dentry_ptr d;
342 void *inline_dentry;
343
344 inline_dentry = inline_data_addr(inode, ipage);
345
346 make_dentry_ptr_inline(inode, &d, inline_dentry);
347 f2fs_do_make_empty_dir(inode, parent, &d);
348
349 set_page_dirty(ipage);
350
351
352 if (i_size_read(inode) < MAX_INLINE_DATA(inode))
353 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
354 return 0;
355}
356
357
358
359
360
361static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
362 void *inline_dentry)
363{
364 struct page *page;
365 struct dnode_of_data dn;
366 struct f2fs_dentry_block *dentry_blk;
367 struct f2fs_dentry_ptr src, dst;
368 int err;
369
370 page = f2fs_grab_cache_page(dir->i_mapping, 0, false);
371 if (!page) {
372 f2fs_put_page(ipage, 1);
373 return -ENOMEM;
374 }
375
376 set_new_dnode(&dn, dir, ipage, NULL, 0);
377 err = f2fs_reserve_block(&dn, 0);
378 if (err)
379 goto out;
380
381 if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
382 f2fs_put_dnode(&dn);
383 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
384 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
385 __func__, dir->i_ino, dn.data_blkaddr);
386 err = -EFSCORRUPTED;
387 goto out;
388 }
389
390 f2fs_wait_on_page_writeback(page, DATA, true, true);
391
392 dentry_blk = page_address(page);
393
394 make_dentry_ptr_inline(dir, &src, inline_dentry);
395 make_dentry_ptr_block(dir, &dst, dentry_blk);
396
397
398 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
399 memset(dst.bitmap + src.nr_bitmap, 0, dst.nr_bitmap - src.nr_bitmap);
400
401
402
403
404
405
406 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
407 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
408
409 if (!PageUptodate(page))
410 SetPageUptodate(page);
411 set_page_dirty(page);
412
413
414 f2fs_truncate_inline_inode(dir, ipage, 0);
415
416 stat_dec_inline_dir(dir);
417 clear_inode_flag(dir, FI_INLINE_DENTRY);
418
419
420
421
422
423 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
424 !f2fs_has_inline_xattr(dir))
425 F2FS_I(dir)->i_inline_xattr_size = 0;
426
427 f2fs_i_depth_write(dir, 1);
428 if (i_size_read(dir) < PAGE_SIZE)
429 f2fs_i_size_write(dir, PAGE_SIZE);
430out:
431 f2fs_put_page(page, 1);
432 return err;
433}
434
435static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
436{
437 struct f2fs_dentry_ptr d;
438 unsigned long bit_pos = 0;
439 int err = 0;
440
441 make_dentry_ptr_inline(dir, &d, inline_dentry);
442
443 while (bit_pos < d.max) {
444 struct f2fs_dir_entry *de;
445 struct qstr new_name;
446 nid_t ino;
447 umode_t fake_mode;
448
449 if (!test_bit_le(bit_pos, d.bitmap)) {
450 bit_pos++;
451 continue;
452 }
453
454 de = &d.dentry[bit_pos];
455
456 if (unlikely(!de->name_len)) {
457 bit_pos++;
458 continue;
459 }
460
461 new_name.name = d.filename[bit_pos];
462 new_name.len = le16_to_cpu(de->name_len);
463
464 ino = le32_to_cpu(de->ino);
465 fake_mode = f2fs_get_de_type(de) << S_SHIFT;
466
467 err = f2fs_add_regular_entry(dir, &new_name, NULL, NULL,
468 ino, fake_mode);
469 if (err)
470 goto punch_dentry_pages;
471
472 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
473 }
474 return 0;
475punch_dentry_pages:
476 truncate_inode_pages(&dir->i_data, 0);
477 f2fs_truncate_blocks(dir, 0, false);
478 f2fs_remove_dirty_inode(dir);
479 return err;
480}
481
482static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
483 void *inline_dentry)
484{
485 void *backup_dentry;
486 int err;
487
488 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
489 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
490 if (!backup_dentry) {
491 f2fs_put_page(ipage, 1);
492 return -ENOMEM;
493 }
494
495 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
496 f2fs_truncate_inline_inode(dir, ipage, 0);
497
498 unlock_page(ipage);
499
500 err = f2fs_add_inline_entries(dir, backup_dentry);
501 if (err)
502 goto recover;
503
504 lock_page(ipage);
505
506 stat_dec_inline_dir(dir);
507 clear_inode_flag(dir, FI_INLINE_DENTRY);
508
509
510
511
512
513 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
514 !f2fs_has_inline_xattr(dir))
515 F2FS_I(dir)->i_inline_xattr_size = 0;
516
517 kvfree(backup_dentry);
518 return 0;
519recover:
520 lock_page(ipage);
521 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
522 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
523 f2fs_i_depth_write(dir, 0);
524 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
525 set_page_dirty(ipage);
526 f2fs_put_page(ipage, 1);
527
528 kvfree(backup_dentry);
529 return err;
530}
531
532static int f2fs_convert_inline_dir(struct inode *dir, struct page *ipage,
533 void *inline_dentry)
534{
535 if (!F2FS_I(dir)->i_dir_level)
536 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
537 else
538 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
539}
540
541int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
542 const struct qstr *orig_name,
543 struct inode *inode, nid_t ino, umode_t mode)
544{
545 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
546 struct page *ipage;
547 unsigned int bit_pos;
548 f2fs_hash_t name_hash;
549 void *inline_dentry = NULL;
550 struct f2fs_dentry_ptr d;
551 int slots = GET_DENTRY_SLOTS(new_name->len);
552 struct page *page = NULL;
553 int err = 0;
554
555 ipage = f2fs_get_node_page(sbi, dir->i_ino);
556 if (IS_ERR(ipage))
557 return PTR_ERR(ipage);
558
559 inline_dentry = inline_data_addr(dir, ipage);
560 make_dentry_ptr_inline(dir, &d, inline_dentry);
561
562 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
563 if (bit_pos >= d.max) {
564 err = f2fs_convert_inline_dir(dir, ipage, inline_dentry);
565 if (err)
566 return err;
567 err = -EAGAIN;
568 goto out;
569 }
570
571 if (inode) {
572 down_write(&F2FS_I(inode)->i_sem);
573 page = f2fs_init_inode_metadata(inode, dir, new_name,
574 orig_name, ipage);
575 if (IS_ERR(page)) {
576 err = PTR_ERR(page);
577 goto fail;
578 }
579 }
580
581 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
582
583 name_hash = f2fs_dentry_hash(new_name, NULL);
584 f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos);
585
586 set_page_dirty(ipage);
587
588
589 if (inode) {
590 f2fs_i_pino_write(inode, dir->i_ino);
591 f2fs_put_page(page, 1);
592 }
593
594 f2fs_update_parent_metadata(dir, inode, 0);
595fail:
596 if (inode)
597 up_write(&F2FS_I(inode)->i_sem);
598out:
599 f2fs_put_page(ipage, 1);
600 return err;
601}
602
603void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
604 struct inode *dir, struct inode *inode)
605{
606 struct f2fs_dentry_ptr d;
607 void *inline_dentry;
608 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
609 unsigned int bit_pos;
610 int i;
611
612 lock_page(page);
613 f2fs_wait_on_page_writeback(page, NODE, true, true);
614
615 inline_dentry = inline_data_addr(dir, page);
616 make_dentry_ptr_inline(dir, &d, inline_dentry);
617
618 bit_pos = dentry - d.dentry;
619 for (i = 0; i < slots; i++)
620 __clear_bit_le(bit_pos + i, d.bitmap);
621
622 set_page_dirty(page);
623 f2fs_put_page(page, 1);
624
625 dir->i_ctime = dir->i_mtime = current_time(dir);
626 f2fs_mark_inode_dirty_sync(dir, false);
627
628 if (inode)
629 f2fs_drop_nlink(dir, inode);
630}
631
632bool f2fs_empty_inline_dir(struct inode *dir)
633{
634 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
635 struct page *ipage;
636 unsigned int bit_pos = 2;
637 void *inline_dentry;
638 struct f2fs_dentry_ptr d;
639
640 ipage = f2fs_get_node_page(sbi, dir->i_ino);
641 if (IS_ERR(ipage))
642 return false;
643
644 inline_dentry = inline_data_addr(dir, ipage);
645 make_dentry_ptr_inline(dir, &d, inline_dentry);
646
647 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
648
649 f2fs_put_page(ipage, 1);
650
651 if (bit_pos < d.max)
652 return false;
653
654 return true;
655}
656
657int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
658 struct fscrypt_str *fstr)
659{
660 struct inode *inode = file_inode(file);
661 struct page *ipage = NULL;
662 struct f2fs_dentry_ptr d;
663 void *inline_dentry = NULL;
664 int err;
665
666 make_dentry_ptr_inline(inode, &d, inline_dentry);
667
668 if (ctx->pos == d.max)
669 return 0;
670
671 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
672 if (IS_ERR(ipage))
673 return PTR_ERR(ipage);
674
675
676
677
678
679 unlock_page(ipage);
680
681 inline_dentry = inline_data_addr(inode, ipage);
682
683 make_dentry_ptr_inline(inode, &d, inline_dentry);
684
685 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
686 if (!err)
687 ctx->pos = d.max;
688
689 f2fs_put_page(ipage, 0);
690 return err < 0 ? err : 0;
691}
692
693int f2fs_inline_data_fiemap(struct inode *inode,
694 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
695{
696 __u64 byteaddr, ilen;
697 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
698 FIEMAP_EXTENT_LAST;
699 struct node_info ni;
700 struct page *ipage;
701 int err = 0;
702
703 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
704 if (IS_ERR(ipage))
705 return PTR_ERR(ipage);
706
707 if (!f2fs_has_inline_data(inode)) {
708 err = -EAGAIN;
709 goto out;
710 }
711
712 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
713 if (start >= ilen)
714 goto out;
715 if (start + len < ilen)
716 ilen = start + len;
717 ilen -= start;
718
719 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
720 if (err)
721 goto out;
722
723 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
724 byteaddr += (char *)inline_data_addr(inode, ipage) -
725 (char *)F2FS_INODE(ipage);
726 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
727out:
728 f2fs_put_page(ipage, 1);
729 return err;
730}
731