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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
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 /* Copy the whole inline data block */
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 /* clear dirty state */
155 dirty = clear_page_dirty_for_io(page);
156
157 /* write data page to try to make data consistent */
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 /* this converted inline_data should be recovered. */
170 set_inode_flag(dn->inode, FI_APPEND_WRITE);
171
172 /* clear inline data and flag after data writeback */
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 * The inline_data recovery policy is as follows.
264 * [prev.] [next] of inline_data flag
265 * o o -> recover inline_data
266 * o x -> remove inline_data, and then recover data blocks
267 * x o -> remove inline_data, and then recover inline_data
268 * x x -> recover data blocks
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 /* update i_size to MAX_INLINE_DATA */
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 * NOTE: ipage is grabbed by caller, but if any error occurs, we should
360 * release ipage in this function.
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, false);
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 /* copy data from inline dentry block to new dentry block */
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 * we do not need to zero out remainder part of dentry and filename
403 * field, since we have used bitmap for marking the usage status of
404 * them, besides, we can also ignore copying/zeroing reserved space
405 * of dentry block, because them haven't been used so far.
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 /* clear inline dir and flag after data writeback */
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 * should retrieve reserved space which was used to keep
422 * inline_dentry's structure for backward compatibility.
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 * should retrieve reserved space which was used to keep
512 * inline_dentry's structure for backward compatibility.
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 f2fs_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_add_inline_entry(struct inode *dir, const struct qstr *new_name,
543 const struct qstr *orig_name,
544 struct inode *inode, nid_t ino, umode_t mode)
545{
546 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
547 struct page *ipage;
548 unsigned int bit_pos;
549 f2fs_hash_t name_hash;
550 void *inline_dentry = NULL;
551 struct f2fs_dentry_ptr d;
552 int slots = GET_DENTRY_SLOTS(new_name->len);
553 struct page *page = NULL;
554 int err = 0;
555
556 ipage = f2fs_get_node_page(sbi, dir->i_ino);
557 if (IS_ERR(ipage))
558 return PTR_ERR(ipage);
559
560 inline_dentry = inline_data_addr(dir, ipage);
561 make_dentry_ptr_inline(dir, &d, inline_dentry);
562
563 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
564 if (bit_pos >= d.max) {
565 err = f2fs_convert_inline_dir(dir, ipage, inline_dentry);
566 if (err)
567 return err;
568 err = -EAGAIN;
569 goto out;
570 }
571
572 if (inode) {
573 down_write(&F2FS_I(inode)->i_sem);
574 page = f2fs_init_inode_metadata(inode, dir, new_name,
575 orig_name, ipage);
576 if (IS_ERR(page)) {
577 err = PTR_ERR(page);
578 goto fail;
579 }
580 }
581
582 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
583
584 name_hash = f2fs_dentry_hash(dir, new_name, NULL);
585 f2fs_update_dentry(ino, mode, &d, new_name, name_hash, bit_pos);
586
587 set_page_dirty(ipage);
588
589 /* we don't need to mark_inode_dirty now */
590 if (inode) {
591 f2fs_i_pino_write(inode, dir->i_ino);
592
593 /* synchronize inode page's data from inode cache */
594 if (is_inode_flag_set(inode, FI_NEW_INODE))
595 f2fs_update_inode(inode, page);
596
597 f2fs_put_page(page, 1);
598 }
599
600 f2fs_update_parent_metadata(dir, inode, 0);
601fail:
602 if (inode)
603 up_write(&F2FS_I(inode)->i_sem);
604out:
605 f2fs_put_page(ipage, 1);
606 return err;
607}
608
609void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
610 struct inode *dir, struct inode *inode)
611{
612 struct f2fs_dentry_ptr d;
613 void *inline_dentry;
614 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
615 unsigned int bit_pos;
616 int i;
617
618 lock_page(page);
619 f2fs_wait_on_page_writeback(page, NODE, true, true);
620
621 inline_dentry = inline_data_addr(dir, page);
622 make_dentry_ptr_inline(dir, &d, inline_dentry);
623
624 bit_pos = dentry - d.dentry;
625 for (i = 0; i < slots; i++)
626 __clear_bit_le(bit_pos + i, d.bitmap);
627
628 set_page_dirty(page);
629 f2fs_put_page(page, 1);
630
631 dir->i_ctime = dir->i_mtime = current_time(dir);
632 f2fs_mark_inode_dirty_sync(dir, false);
633
634 if (inode)
635 f2fs_drop_nlink(dir, inode);
636}
637
638bool f2fs_empty_inline_dir(struct inode *dir)
639{
640 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
641 struct page *ipage;
642 unsigned int bit_pos = 2;
643 void *inline_dentry;
644 struct f2fs_dentry_ptr d;
645
646 ipage = f2fs_get_node_page(sbi, dir->i_ino);
647 if (IS_ERR(ipage))
648 return false;
649
650 inline_dentry = inline_data_addr(dir, ipage);
651 make_dentry_ptr_inline(dir, &d, inline_dentry);
652
653 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
654
655 f2fs_put_page(ipage, 1);
656
657 if (bit_pos < d.max)
658 return false;
659
660 return true;
661}
662
663int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
664 struct fscrypt_str *fstr)
665{
666 struct inode *inode = file_inode(file);
667 struct page *ipage = NULL;
668 struct f2fs_dentry_ptr d;
669 void *inline_dentry = NULL;
670 int err;
671
672 make_dentry_ptr_inline(inode, &d, inline_dentry);
673
674 if (ctx->pos == d.max)
675 return 0;
676
677 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
678 if (IS_ERR(ipage))
679 return PTR_ERR(ipage);
680
681 /*
682 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
683 * ipage without page's lock held.
684 */
685 unlock_page(ipage);
686
687 inline_dentry = inline_data_addr(inode, ipage);
688
689 make_dentry_ptr_inline(inode, &d, inline_dentry);
690
691 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
692 if (!err)
693 ctx->pos = d.max;
694
695 f2fs_put_page(ipage, 0);
696 return err < 0 ? err : 0;
697}
698
699int f2fs_inline_data_fiemap(struct inode *inode,
700 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
701{
702 __u64 byteaddr, ilen;
703 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
704 FIEMAP_EXTENT_LAST;
705 struct node_info ni;
706 struct page *ipage;
707 int err = 0;
708
709 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
710 if (IS_ERR(ipage))
711 return PTR_ERR(ipage);
712
713 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
714 !f2fs_has_inline_data(inode)) {
715 err = -EAGAIN;
716 goto out;
717 }
718
719 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
720 err = -EAGAIN;
721 goto out;
722 }
723
724 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
725 if (start >= ilen)
726 goto out;
727 if (start + len < ilen)
728 ilen = start + len;
729 ilen -= start;
730
731 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni);
732 if (err)
733 goto out;
734
735 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
736 byteaddr += (char *)inline_data_addr(inode, ipage) -
737 (char *)F2FS_INODE(ipage);
738 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
739out:
740 f2fs_put_page(ipage, 1);
741 return err;
742}
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
17static bool support_inline_data(struct inode *inode)
18{
19 if (f2fs_used_in_atomic_write(inode))
20 return false;
21 if (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))
22 return false;
23 if (i_size_read(inode) > MAX_INLINE_DATA(inode))
24 return false;
25 return true;
26}
27
28bool f2fs_may_inline_data(struct inode *inode)
29{
30 if (!support_inline_data(inode))
31 return false;
32
33 return !f2fs_post_read_required(inode);
34}
35
36static bool inode_has_blocks(struct inode *inode, struct page *ipage)
37{
38 struct f2fs_inode *ri = F2FS_INODE(ipage);
39 int i;
40
41 if (F2FS_HAS_BLOCKS(inode))
42 return true;
43
44 for (i = 0; i < DEF_NIDS_PER_INODE; i++) {
45 if (ri->i_nid[i])
46 return true;
47 }
48 return false;
49}
50
51bool f2fs_sanity_check_inline_data(struct inode *inode, struct page *ipage)
52{
53 if (!f2fs_has_inline_data(inode))
54 return false;
55
56 if (inode_has_blocks(inode, ipage))
57 return false;
58
59 if (!support_inline_data(inode))
60 return true;
61
62 /*
63 * used by sanity_check_inode(), when disk layout fields has not
64 * been synchronized to inmem fields.
65 */
66 return (S_ISREG(inode->i_mode) &&
67 (file_is_encrypt(inode) || file_is_verity(inode) ||
68 (F2FS_I(inode)->i_flags & F2FS_COMPR_FL)));
69}
70
71bool f2fs_may_inline_dentry(struct inode *inode)
72{
73 if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
74 return false;
75
76 if (!S_ISDIR(inode->i_mode))
77 return false;
78
79 return true;
80}
81
82void f2fs_do_read_inline_data(struct folio *folio, struct page *ipage)
83{
84 struct inode *inode = folio_file_mapping(folio)->host;
85
86 if (folio_test_uptodate(folio))
87 return;
88
89 f2fs_bug_on(F2FS_I_SB(inode), folio_index(folio));
90
91 folio_zero_segment(folio, MAX_INLINE_DATA(inode), folio_size(folio));
92
93 /* Copy the whole inline data block */
94 memcpy_to_folio(folio, 0, inline_data_addr(inode, ipage),
95 MAX_INLINE_DATA(inode));
96 if (!folio_test_uptodate(folio))
97 folio_mark_uptodate(folio);
98}
99
100void f2fs_truncate_inline_inode(struct inode *inode,
101 struct page *ipage, u64 from)
102{
103 void *addr;
104
105 if (from >= MAX_INLINE_DATA(inode))
106 return;
107
108 addr = inline_data_addr(inode, ipage);
109
110 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
111 memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
112 set_page_dirty(ipage);
113
114 if (from == 0)
115 clear_inode_flag(inode, FI_DATA_EXIST);
116}
117
118int f2fs_read_inline_data(struct inode *inode, struct folio *folio)
119{
120 struct page *ipage;
121
122 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
123 if (IS_ERR(ipage)) {
124 folio_unlock(folio);
125 return PTR_ERR(ipage);
126 }
127
128 if (!f2fs_has_inline_data(inode)) {
129 f2fs_put_page(ipage, 1);
130 return -EAGAIN;
131 }
132
133 if (folio_index(folio))
134 folio_zero_segment(folio, 0, folio_size(folio));
135 else
136 f2fs_do_read_inline_data(folio, ipage);
137
138 if (!folio_test_uptodate(folio))
139 folio_mark_uptodate(folio);
140 f2fs_put_page(ipage, 1);
141 folio_unlock(folio);
142 return 0;
143}
144
145int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
146{
147 struct f2fs_io_info fio = {
148 .sbi = F2FS_I_SB(dn->inode),
149 .ino = dn->inode->i_ino,
150 .type = DATA,
151 .op = REQ_OP_WRITE,
152 .op_flags = REQ_SYNC | REQ_PRIO,
153 .page = page,
154 .encrypted_page = NULL,
155 .io_type = FS_DATA_IO,
156 };
157 struct node_info ni;
158 int dirty, err;
159
160 if (!f2fs_exist_data(dn->inode))
161 goto clear_out;
162
163 err = f2fs_reserve_block(dn, 0);
164 if (err)
165 return err;
166
167 err = f2fs_get_node_info(fio.sbi, dn->nid, &ni, false);
168 if (err) {
169 f2fs_truncate_data_blocks_range(dn, 1);
170 f2fs_put_dnode(dn);
171 return err;
172 }
173
174 fio.version = ni.version;
175
176 if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
177 f2fs_put_dnode(dn);
178 set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
179 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
180 __func__, dn->inode->i_ino, dn->data_blkaddr);
181 f2fs_handle_error(fio.sbi, ERROR_INVALID_BLKADDR);
182 return -EFSCORRUPTED;
183 }
184
185 f2fs_bug_on(F2FS_P_SB(page), folio_test_writeback(page_folio(page)));
186
187 f2fs_do_read_inline_data(page_folio(page), dn->inode_page);
188 set_page_dirty(page);
189
190 /* clear dirty state */
191 dirty = clear_page_dirty_for_io(page);
192
193 /* write data page to try to make data consistent */
194 set_page_writeback(page);
195 fio.old_blkaddr = dn->data_blkaddr;
196 set_inode_flag(dn->inode, FI_HOT_DATA);
197 f2fs_outplace_write_data(dn, &fio);
198 f2fs_wait_on_page_writeback(page, DATA, true, true);
199 if (dirty) {
200 inode_dec_dirty_pages(dn->inode);
201 f2fs_remove_dirty_inode(dn->inode);
202 }
203
204 /* this converted inline_data should be recovered. */
205 set_inode_flag(dn->inode, FI_APPEND_WRITE);
206
207 /* clear inline data and flag after data writeback */
208 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
209 clear_page_private_inline(dn->inode_page);
210clear_out:
211 stat_dec_inline_inode(dn->inode);
212 clear_inode_flag(dn->inode, FI_INLINE_DATA);
213 f2fs_put_dnode(dn);
214 return 0;
215}
216
217int f2fs_convert_inline_inode(struct inode *inode)
218{
219 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
220 struct dnode_of_data dn;
221 struct page *ipage, *page;
222 int err = 0;
223
224 if (f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb))
225 return -EROFS;
226
227 if (!f2fs_has_inline_data(inode))
228 return 0;
229
230 err = f2fs_dquot_initialize(inode);
231 if (err)
232 return err;
233
234 page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
235 if (!page)
236 return -ENOMEM;
237
238 f2fs_lock_op(sbi);
239
240 ipage = f2fs_get_node_page(sbi, inode->i_ino);
241 if (IS_ERR(ipage)) {
242 err = PTR_ERR(ipage);
243 goto out;
244 }
245
246 set_new_dnode(&dn, inode, ipage, ipage, 0);
247
248 if (f2fs_has_inline_data(inode))
249 err = f2fs_convert_inline_page(&dn, page);
250
251 f2fs_put_dnode(&dn);
252out:
253 f2fs_unlock_op(sbi);
254
255 f2fs_put_page(page, 1);
256
257 if (!err)
258 f2fs_balance_fs(sbi, dn.node_changed);
259
260 return err;
261}
262
263int f2fs_write_inline_data(struct inode *inode, struct folio *folio)
264{
265 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
266 struct page *ipage;
267
268 ipage = f2fs_get_node_page(sbi, inode->i_ino);
269 if (IS_ERR(ipage))
270 return PTR_ERR(ipage);
271
272 if (!f2fs_has_inline_data(inode)) {
273 f2fs_put_page(ipage, 1);
274 return -EAGAIN;
275 }
276
277 f2fs_bug_on(F2FS_I_SB(inode), folio->index);
278
279 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
280 memcpy_from_folio(inline_data_addr(inode, ipage),
281 folio, 0, MAX_INLINE_DATA(inode));
282 set_page_dirty(ipage);
283
284 f2fs_clear_page_cache_dirty_tag(folio);
285
286 set_inode_flag(inode, FI_APPEND_WRITE);
287 set_inode_flag(inode, FI_DATA_EXIST);
288
289 clear_page_private_inline(ipage);
290 f2fs_put_page(ipage, 1);
291 return 0;
292}
293
294int f2fs_recover_inline_data(struct inode *inode, struct page *npage)
295{
296 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
297 struct f2fs_inode *ri = NULL;
298 void *src_addr, *dst_addr;
299 struct page *ipage;
300
301 /*
302 * The inline_data recovery policy is as follows.
303 * [prev.] [next] of inline_data flag
304 * o o -> recover inline_data
305 * o x -> remove inline_data, and then recover data blocks
306 * x o -> remove data blocks, and then recover inline_data
307 * x x -> recover data blocks
308 */
309 if (IS_INODE(npage))
310 ri = F2FS_INODE(npage);
311
312 if (f2fs_has_inline_data(inode) &&
313 ri && (ri->i_inline & F2FS_INLINE_DATA)) {
314process_inline:
315 ipage = f2fs_get_node_page(sbi, inode->i_ino);
316 if (IS_ERR(ipage))
317 return PTR_ERR(ipage);
318
319 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
320
321 src_addr = inline_data_addr(inode, npage);
322 dst_addr = inline_data_addr(inode, ipage);
323 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
324
325 set_inode_flag(inode, FI_INLINE_DATA);
326 set_inode_flag(inode, FI_DATA_EXIST);
327
328 set_page_dirty(ipage);
329 f2fs_put_page(ipage, 1);
330 return 1;
331 }
332
333 if (f2fs_has_inline_data(inode)) {
334 ipage = f2fs_get_node_page(sbi, inode->i_ino);
335 if (IS_ERR(ipage))
336 return PTR_ERR(ipage);
337 f2fs_truncate_inline_inode(inode, ipage, 0);
338 stat_dec_inline_inode(inode);
339 clear_inode_flag(inode, FI_INLINE_DATA);
340 f2fs_put_page(ipage, 1);
341 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
342 int ret;
343
344 ret = f2fs_truncate_blocks(inode, 0, false);
345 if (ret)
346 return ret;
347 stat_inc_inline_inode(inode);
348 goto process_inline;
349 }
350 return 0;
351}
352
353struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
354 const struct f2fs_filename *fname,
355 struct page **res_page,
356 bool use_hash)
357{
358 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
359 struct f2fs_dir_entry *de;
360 struct f2fs_dentry_ptr d;
361 struct page *ipage;
362 void *inline_dentry;
363
364 ipage = f2fs_get_node_page(sbi, dir->i_ino);
365 if (IS_ERR(ipage)) {
366 *res_page = ipage;
367 return NULL;
368 }
369
370 inline_dentry = inline_data_addr(dir, ipage);
371
372 make_dentry_ptr_inline(dir, &d, inline_dentry);
373 de = f2fs_find_target_dentry(&d, fname, NULL, use_hash);
374 unlock_page(ipage);
375 if (IS_ERR(de)) {
376 *res_page = ERR_CAST(de);
377 de = NULL;
378 }
379 if (de)
380 *res_page = ipage;
381 else
382 f2fs_put_page(ipage, 0);
383
384 return de;
385}
386
387int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
388 struct page *ipage)
389{
390 struct f2fs_dentry_ptr d;
391 void *inline_dentry;
392
393 inline_dentry = inline_data_addr(inode, ipage);
394
395 make_dentry_ptr_inline(inode, &d, inline_dentry);
396 f2fs_do_make_empty_dir(inode, parent, &d);
397
398 set_page_dirty(ipage);
399
400 /* update i_size to MAX_INLINE_DATA */
401 if (i_size_read(inode) < MAX_INLINE_DATA(inode))
402 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
403 return 0;
404}
405
406/*
407 * NOTE: ipage is grabbed by caller, but if any error occurs, we should
408 * release ipage in this function.
409 */
410static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
411 void *inline_dentry)
412{
413 struct page *page;
414 struct dnode_of_data dn;
415 struct f2fs_dentry_block *dentry_blk;
416 struct f2fs_dentry_ptr src, dst;
417 int err;
418
419 page = f2fs_grab_cache_page(dir->i_mapping, 0, true);
420 if (!page) {
421 f2fs_put_page(ipage, 1);
422 return -ENOMEM;
423 }
424
425 set_new_dnode(&dn, dir, ipage, NULL, 0);
426 err = f2fs_reserve_block(&dn, 0);
427 if (err)
428 goto out;
429
430 if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
431 f2fs_put_dnode(&dn);
432 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
433 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
434 __func__, dir->i_ino, dn.data_blkaddr);
435 f2fs_handle_error(F2FS_P_SB(page), ERROR_INVALID_BLKADDR);
436 err = -EFSCORRUPTED;
437 goto out;
438 }
439
440 f2fs_wait_on_page_writeback(page, DATA, true, true);
441
442 dentry_blk = page_address(page);
443
444 /*
445 * Start by zeroing the full block, to ensure that all unused space is
446 * zeroed and no uninitialized memory is leaked to disk.
447 */
448 memset(dentry_blk, 0, F2FS_BLKSIZE);
449
450 make_dentry_ptr_inline(dir, &src, inline_dentry);
451 make_dentry_ptr_block(dir, &dst, dentry_blk);
452
453 /* copy data from inline dentry block to new dentry block */
454 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
455 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
456 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
457
458 if (!PageUptodate(page))
459 SetPageUptodate(page);
460 set_page_dirty(page);
461
462 /* clear inline dir and flag after data writeback */
463 f2fs_truncate_inline_inode(dir, ipage, 0);
464
465 stat_dec_inline_dir(dir);
466 clear_inode_flag(dir, FI_INLINE_DENTRY);
467
468 /*
469 * should retrieve reserved space which was used to keep
470 * inline_dentry's structure for backward compatibility.
471 */
472 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
473 !f2fs_has_inline_xattr(dir))
474 F2FS_I(dir)->i_inline_xattr_size = 0;
475
476 f2fs_i_depth_write(dir, 1);
477 if (i_size_read(dir) < PAGE_SIZE)
478 f2fs_i_size_write(dir, PAGE_SIZE);
479out:
480 f2fs_put_page(page, 1);
481 return err;
482}
483
484static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
485{
486 struct f2fs_dentry_ptr d;
487 unsigned long bit_pos = 0;
488 int err = 0;
489
490 make_dentry_ptr_inline(dir, &d, inline_dentry);
491
492 while (bit_pos < d.max) {
493 struct f2fs_dir_entry *de;
494 struct f2fs_filename fname;
495 nid_t ino;
496 umode_t fake_mode;
497
498 if (!test_bit_le(bit_pos, d.bitmap)) {
499 bit_pos++;
500 continue;
501 }
502
503 de = &d.dentry[bit_pos];
504
505 if (unlikely(!de->name_len)) {
506 bit_pos++;
507 continue;
508 }
509
510 /*
511 * We only need the disk_name and hash to move the dentry.
512 * We don't need the original or casefolded filenames.
513 */
514 memset(&fname, 0, sizeof(fname));
515 fname.disk_name.name = d.filename[bit_pos];
516 fname.disk_name.len = le16_to_cpu(de->name_len);
517 fname.hash = de->hash_code;
518
519 ino = le32_to_cpu(de->ino);
520 fake_mode = fs_ftype_to_dtype(de->file_type) << S_DT_SHIFT;
521
522 err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode);
523 if (err)
524 goto punch_dentry_pages;
525
526 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
527 }
528 return 0;
529punch_dentry_pages:
530 truncate_inode_pages(&dir->i_data, 0);
531 f2fs_truncate_blocks(dir, 0, false);
532 f2fs_remove_dirty_inode(dir);
533 return err;
534}
535
536static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
537 void *inline_dentry)
538{
539 void *backup_dentry;
540 int err;
541
542 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
543 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
544 if (!backup_dentry) {
545 f2fs_put_page(ipage, 1);
546 return -ENOMEM;
547 }
548
549 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
550 f2fs_truncate_inline_inode(dir, ipage, 0);
551
552 unlock_page(ipage);
553
554 err = f2fs_add_inline_entries(dir, backup_dentry);
555 if (err)
556 goto recover;
557
558 lock_page(ipage);
559
560 stat_dec_inline_dir(dir);
561 clear_inode_flag(dir, FI_INLINE_DENTRY);
562
563 /*
564 * should retrieve reserved space which was used to keep
565 * inline_dentry's structure for backward compatibility.
566 */
567 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
568 !f2fs_has_inline_xattr(dir))
569 F2FS_I(dir)->i_inline_xattr_size = 0;
570
571 kfree(backup_dentry);
572 return 0;
573recover:
574 lock_page(ipage);
575 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
576 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
577 f2fs_i_depth_write(dir, 0);
578 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
579 set_page_dirty(ipage);
580 f2fs_put_page(ipage, 1);
581
582 kfree(backup_dentry);
583 return err;
584}
585
586static int do_convert_inline_dir(struct inode *dir, struct page *ipage,
587 void *inline_dentry)
588{
589 if (!F2FS_I(dir)->i_dir_level)
590 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
591 else
592 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
593}
594
595int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry)
596{
597 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
598 struct page *ipage;
599 struct f2fs_filename fname;
600 void *inline_dentry = NULL;
601 int err = 0;
602
603 if (!f2fs_has_inline_dentry(dir))
604 return 0;
605
606 f2fs_lock_op(sbi);
607
608 err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname);
609 if (err)
610 goto out;
611
612 ipage = f2fs_get_node_page(sbi, dir->i_ino);
613 if (IS_ERR(ipage)) {
614 err = PTR_ERR(ipage);
615 goto out_fname;
616 }
617
618 if (f2fs_has_enough_room(dir, ipage, &fname)) {
619 f2fs_put_page(ipage, 1);
620 goto out_fname;
621 }
622
623 inline_dentry = inline_data_addr(dir, ipage);
624
625 err = do_convert_inline_dir(dir, ipage, inline_dentry);
626 if (!err)
627 f2fs_put_page(ipage, 1);
628out_fname:
629 f2fs_free_filename(&fname);
630out:
631 f2fs_unlock_op(sbi);
632 return err;
633}
634
635int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
636 struct inode *inode, nid_t ino, umode_t mode)
637{
638 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
639 struct page *ipage;
640 unsigned int bit_pos;
641 void *inline_dentry = NULL;
642 struct f2fs_dentry_ptr d;
643 int slots = GET_DENTRY_SLOTS(fname->disk_name.len);
644 struct page *page = NULL;
645 int err = 0;
646
647 ipage = f2fs_get_node_page(sbi, dir->i_ino);
648 if (IS_ERR(ipage))
649 return PTR_ERR(ipage);
650
651 inline_dentry = inline_data_addr(dir, ipage);
652 make_dentry_ptr_inline(dir, &d, inline_dentry);
653
654 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
655 if (bit_pos >= d.max) {
656 err = do_convert_inline_dir(dir, ipage, inline_dentry);
657 if (err)
658 return err;
659 err = -EAGAIN;
660 goto out;
661 }
662
663 if (inode) {
664 f2fs_down_write_nested(&F2FS_I(inode)->i_sem,
665 SINGLE_DEPTH_NESTING);
666 page = f2fs_init_inode_metadata(inode, dir, fname, ipage);
667 if (IS_ERR(page)) {
668 err = PTR_ERR(page);
669 goto fail;
670 }
671 }
672
673 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
674
675 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash,
676 bit_pos);
677
678 set_page_dirty(ipage);
679
680 /* we don't need to mark_inode_dirty now */
681 if (inode) {
682 f2fs_i_pino_write(inode, dir->i_ino);
683
684 /* synchronize inode page's data from inode cache */
685 if (is_inode_flag_set(inode, FI_NEW_INODE))
686 f2fs_update_inode(inode, page);
687
688 f2fs_put_page(page, 1);
689 }
690
691 f2fs_update_parent_metadata(dir, inode, 0);
692fail:
693 if (inode)
694 f2fs_up_write(&F2FS_I(inode)->i_sem);
695out:
696 f2fs_put_page(ipage, 1);
697 return err;
698}
699
700void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
701 struct inode *dir, struct inode *inode)
702{
703 struct f2fs_dentry_ptr d;
704 void *inline_dentry;
705 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
706 unsigned int bit_pos;
707 int i;
708
709 lock_page(page);
710 f2fs_wait_on_page_writeback(page, NODE, true, true);
711
712 inline_dentry = inline_data_addr(dir, page);
713 make_dentry_ptr_inline(dir, &d, inline_dentry);
714
715 bit_pos = dentry - d.dentry;
716 for (i = 0; i < slots; i++)
717 __clear_bit_le(bit_pos + i, d.bitmap);
718
719 set_page_dirty(page);
720 f2fs_put_page(page, 1);
721
722 inode_set_mtime_to_ts(dir, inode_set_ctime_current(dir));
723 f2fs_mark_inode_dirty_sync(dir, false);
724
725 if (inode)
726 f2fs_drop_nlink(dir, inode);
727}
728
729bool f2fs_empty_inline_dir(struct inode *dir)
730{
731 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
732 struct page *ipage;
733 unsigned int bit_pos = 2;
734 void *inline_dentry;
735 struct f2fs_dentry_ptr d;
736
737 ipage = f2fs_get_node_page(sbi, dir->i_ino);
738 if (IS_ERR(ipage))
739 return false;
740
741 inline_dentry = inline_data_addr(dir, ipage);
742 make_dentry_ptr_inline(dir, &d, inline_dentry);
743
744 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
745
746 f2fs_put_page(ipage, 1);
747
748 if (bit_pos < d.max)
749 return false;
750
751 return true;
752}
753
754int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
755 struct fscrypt_str *fstr)
756{
757 struct inode *inode = file_inode(file);
758 struct page *ipage = NULL;
759 struct f2fs_dentry_ptr d;
760 void *inline_dentry = NULL;
761 int err;
762
763 make_dentry_ptr_inline(inode, &d, inline_dentry);
764
765 if (ctx->pos == d.max)
766 return 0;
767
768 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
769 if (IS_ERR(ipage))
770 return PTR_ERR(ipage);
771
772 /*
773 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
774 * ipage without page's lock held.
775 */
776 unlock_page(ipage);
777
778 inline_dentry = inline_data_addr(inode, ipage);
779
780 make_dentry_ptr_inline(inode, &d, inline_dentry);
781
782 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
783 if (!err)
784 ctx->pos = d.max;
785
786 f2fs_put_page(ipage, 0);
787 return err < 0 ? err : 0;
788}
789
790int f2fs_inline_data_fiemap(struct inode *inode,
791 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
792{
793 __u64 byteaddr, ilen;
794 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
795 FIEMAP_EXTENT_LAST;
796 struct node_info ni;
797 struct page *ipage;
798 int err = 0;
799
800 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
801 if (IS_ERR(ipage))
802 return PTR_ERR(ipage);
803
804 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
805 !f2fs_has_inline_data(inode)) {
806 err = -EAGAIN;
807 goto out;
808 }
809
810 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
811 err = -EAGAIN;
812 goto out;
813 }
814
815 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
816 if (start >= ilen)
817 goto out;
818 if (start + len < ilen)
819 ilen = start + len;
820 ilen -= start;
821
822 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni, false);
823 if (err)
824 goto out;
825
826 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
827 byteaddr += (char *)inline_data_addr(inode, ipage) -
828 (char *)F2FS_INODE(ipage);
829 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
830 trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err);
831out:
832 f2fs_put_page(ipage, 1);
833 return err;
834}