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
support_inline_data(struct inode * inode)17 static 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
f2fs_may_inline_data(struct inode * inode)28 bool 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
f2fs_sanity_check_inline_data(struct inode * inode)36 bool f2fs_sanity_check_inline_data(struct inode *inode)
37 {
38 if (!f2fs_has_inline_data(inode))
39 return false;
40
41 if (!support_inline_data(inode))
42 return true;
43
44 /*
45 * used by sanity_check_inode(), when disk layout fields has not
46 * been synchronized to inmem fields.
47 */
48 return (S_ISREG(inode->i_mode) &&
49 (file_is_encrypt(inode) || file_is_verity(inode) ||
50 (F2FS_I(inode)->i_flags & F2FS_COMPR_FL)));
51 }
52
f2fs_may_inline_dentry(struct inode * inode)53 bool f2fs_may_inline_dentry(struct inode *inode)
54 {
55 if (!test_opt(F2FS_I_SB(inode), INLINE_DENTRY))
56 return false;
57
58 if (!S_ISDIR(inode->i_mode))
59 return false;
60
61 return true;
62 }
63
f2fs_do_read_inline_data(struct page * page,struct page * ipage)64 void f2fs_do_read_inline_data(struct page *page, struct page *ipage)
65 {
66 struct inode *inode = page->mapping->host;
67
68 if (PageUptodate(page))
69 return;
70
71 f2fs_bug_on(F2FS_P_SB(page), page->index);
72
73 zero_user_segment(page, MAX_INLINE_DATA(inode), PAGE_SIZE);
74
75 /* Copy the whole inline data block */
76 memcpy_to_page(page, 0, inline_data_addr(inode, ipage),
77 MAX_INLINE_DATA(inode));
78 if (!PageUptodate(page))
79 SetPageUptodate(page);
80 }
81
f2fs_truncate_inline_inode(struct inode * inode,struct page * ipage,u64 from)82 void f2fs_truncate_inline_inode(struct inode *inode,
83 struct page *ipage, u64 from)
84 {
85 void *addr;
86
87 if (from >= MAX_INLINE_DATA(inode))
88 return;
89
90 addr = inline_data_addr(inode, ipage);
91
92 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
93 memset(addr + from, 0, MAX_INLINE_DATA(inode) - from);
94 set_page_dirty(ipage);
95
96 if (from == 0)
97 clear_inode_flag(inode, FI_DATA_EXIST);
98 }
99
f2fs_read_inline_data(struct inode * inode,struct page * page)100 int f2fs_read_inline_data(struct inode *inode, struct page *page)
101 {
102 struct page *ipage;
103
104 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
105 if (IS_ERR(ipage)) {
106 unlock_page(page);
107 return PTR_ERR(ipage);
108 }
109
110 if (!f2fs_has_inline_data(inode)) {
111 f2fs_put_page(ipage, 1);
112 return -EAGAIN;
113 }
114
115 if (page->index)
116 zero_user_segment(page, 0, PAGE_SIZE);
117 else
118 f2fs_do_read_inline_data(page, ipage);
119
120 if (!PageUptodate(page))
121 SetPageUptodate(page);
122 f2fs_put_page(ipage, 1);
123 unlock_page(page);
124 return 0;
125 }
126
f2fs_convert_inline_page(struct dnode_of_data * dn,struct page * page)127 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page)
128 {
129 struct f2fs_io_info fio = {
130 .sbi = F2FS_I_SB(dn->inode),
131 .ino = dn->inode->i_ino,
132 .type = DATA,
133 .op = REQ_OP_WRITE,
134 .op_flags = REQ_SYNC | REQ_PRIO,
135 .page = page,
136 .encrypted_page = NULL,
137 .io_type = FS_DATA_IO,
138 };
139 struct node_info ni;
140 int dirty, err;
141
142 if (!f2fs_exist_data(dn->inode))
143 goto clear_out;
144
145 err = f2fs_reserve_block(dn, 0);
146 if (err)
147 return err;
148
149 err = f2fs_get_node_info(fio.sbi, dn->nid, &ni, false);
150 if (err) {
151 f2fs_truncate_data_blocks_range(dn, 1);
152 f2fs_put_dnode(dn);
153 return err;
154 }
155
156 fio.version = ni.version;
157
158 if (unlikely(dn->data_blkaddr != NEW_ADDR)) {
159 f2fs_put_dnode(dn);
160 set_sbi_flag(fio.sbi, SBI_NEED_FSCK);
161 f2fs_warn(fio.sbi, "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
162 __func__, dn->inode->i_ino, dn->data_blkaddr);
163 f2fs_handle_error(fio.sbi, ERROR_INVALID_BLKADDR);
164 return -EFSCORRUPTED;
165 }
166
167 f2fs_bug_on(F2FS_P_SB(page), PageWriteback(page));
168
169 f2fs_do_read_inline_data(page, dn->inode_page);
170 set_page_dirty(page);
171
172 /* clear dirty state */
173 dirty = clear_page_dirty_for_io(page);
174
175 /* write data page to try to make data consistent */
176 set_page_writeback(page);
177 fio.old_blkaddr = dn->data_blkaddr;
178 set_inode_flag(dn->inode, FI_HOT_DATA);
179 f2fs_outplace_write_data(dn, &fio);
180 f2fs_wait_on_page_writeback(page, DATA, true, true);
181 if (dirty) {
182 inode_dec_dirty_pages(dn->inode);
183 f2fs_remove_dirty_inode(dn->inode);
184 }
185
186 /* this converted inline_data should be recovered. */
187 set_inode_flag(dn->inode, FI_APPEND_WRITE);
188
189 /* clear inline data and flag after data writeback */
190 f2fs_truncate_inline_inode(dn->inode, dn->inode_page, 0);
191 clear_page_private_inline(dn->inode_page);
192 clear_out:
193 stat_dec_inline_inode(dn->inode);
194 clear_inode_flag(dn->inode, FI_INLINE_DATA);
195 f2fs_put_dnode(dn);
196 return 0;
197 }
198
f2fs_convert_inline_inode(struct inode * inode)199 int f2fs_convert_inline_inode(struct inode *inode)
200 {
201 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
202 struct dnode_of_data dn;
203 struct page *ipage, *page;
204 int err = 0;
205
206 if (f2fs_hw_is_readonly(sbi) || f2fs_readonly(sbi->sb))
207 return -EROFS;
208
209 if (!f2fs_has_inline_data(inode))
210 return 0;
211
212 err = f2fs_dquot_initialize(inode);
213 if (err)
214 return err;
215
216 page = f2fs_grab_cache_page(inode->i_mapping, 0, false);
217 if (!page)
218 return -ENOMEM;
219
220 f2fs_lock_op(sbi);
221
222 ipage = f2fs_get_node_page(sbi, inode->i_ino);
223 if (IS_ERR(ipage)) {
224 err = PTR_ERR(ipage);
225 goto out;
226 }
227
228 set_new_dnode(&dn, inode, ipage, ipage, 0);
229
230 if (f2fs_has_inline_data(inode))
231 err = f2fs_convert_inline_page(&dn, page);
232
233 f2fs_put_dnode(&dn);
234 out:
235 f2fs_unlock_op(sbi);
236
237 f2fs_put_page(page, 1);
238
239 if (!err)
240 f2fs_balance_fs(sbi, dn.node_changed);
241
242 return err;
243 }
244
f2fs_write_inline_data(struct inode * inode,struct page * page)245 int f2fs_write_inline_data(struct inode *inode, struct page *page)
246 {
247 struct dnode_of_data dn;
248 int err;
249
250 set_new_dnode(&dn, inode, NULL, NULL, 0);
251 err = f2fs_get_dnode_of_data(&dn, 0, LOOKUP_NODE);
252 if (err)
253 return err;
254
255 if (!f2fs_has_inline_data(inode)) {
256 f2fs_put_dnode(&dn);
257 return -EAGAIN;
258 }
259
260 f2fs_bug_on(F2FS_I_SB(inode), page->index);
261
262 f2fs_wait_on_page_writeback(dn.inode_page, NODE, true, true);
263 memcpy_from_page(inline_data_addr(inode, dn.inode_page),
264 page, 0, MAX_INLINE_DATA(inode));
265 set_page_dirty(dn.inode_page);
266
267 f2fs_clear_page_cache_dirty_tag(page);
268
269 set_inode_flag(inode, FI_APPEND_WRITE);
270 set_inode_flag(inode, FI_DATA_EXIST);
271
272 clear_page_private_inline(dn.inode_page);
273 f2fs_put_dnode(&dn);
274 return 0;
275 }
276
f2fs_recover_inline_data(struct inode * inode,struct page * npage)277 int f2fs_recover_inline_data(struct inode *inode, struct page *npage)
278 {
279 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
280 struct f2fs_inode *ri = NULL;
281 void *src_addr, *dst_addr;
282 struct page *ipage;
283
284 /*
285 * The inline_data recovery policy is as follows.
286 * [prev.] [next] of inline_data flag
287 * o o -> recover inline_data
288 * o x -> remove inline_data, and then recover data blocks
289 * x o -> remove data blocks, and then recover inline_data
290 * x x -> recover data blocks
291 */
292 if (IS_INODE(npage))
293 ri = F2FS_INODE(npage);
294
295 if (f2fs_has_inline_data(inode) &&
296 ri && (ri->i_inline & F2FS_INLINE_DATA)) {
297 process_inline:
298 ipage = f2fs_get_node_page(sbi, inode->i_ino);
299 if (IS_ERR(ipage))
300 return PTR_ERR(ipage);
301
302 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
303
304 src_addr = inline_data_addr(inode, npage);
305 dst_addr = inline_data_addr(inode, ipage);
306 memcpy(dst_addr, src_addr, MAX_INLINE_DATA(inode));
307
308 set_inode_flag(inode, FI_INLINE_DATA);
309 set_inode_flag(inode, FI_DATA_EXIST);
310
311 set_page_dirty(ipage);
312 f2fs_put_page(ipage, 1);
313 return 1;
314 }
315
316 if (f2fs_has_inline_data(inode)) {
317 ipage = f2fs_get_node_page(sbi, inode->i_ino);
318 if (IS_ERR(ipage))
319 return PTR_ERR(ipage);
320 f2fs_truncate_inline_inode(inode, ipage, 0);
321 stat_dec_inline_inode(inode);
322 clear_inode_flag(inode, FI_INLINE_DATA);
323 f2fs_put_page(ipage, 1);
324 } else if (ri && (ri->i_inline & F2FS_INLINE_DATA)) {
325 int ret;
326
327 ret = f2fs_truncate_blocks(inode, 0, false);
328 if (ret)
329 return ret;
330 stat_inc_inline_inode(inode);
331 goto process_inline;
332 }
333 return 0;
334 }
335
f2fs_find_in_inline_dir(struct inode * dir,const struct f2fs_filename * fname,struct page ** res_page)336 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
337 const struct f2fs_filename *fname,
338 struct page **res_page)
339 {
340 struct f2fs_sb_info *sbi = F2FS_SB(dir->i_sb);
341 struct f2fs_dir_entry *de;
342 struct f2fs_dentry_ptr d;
343 struct page *ipage;
344 void *inline_dentry;
345
346 ipage = f2fs_get_node_page(sbi, dir->i_ino);
347 if (IS_ERR(ipage)) {
348 *res_page = ipage;
349 return NULL;
350 }
351
352 inline_dentry = inline_data_addr(dir, ipage);
353
354 make_dentry_ptr_inline(dir, &d, inline_dentry);
355 de = f2fs_find_target_dentry(&d, fname, NULL);
356 unlock_page(ipage);
357 if (IS_ERR(de)) {
358 *res_page = ERR_CAST(de);
359 de = NULL;
360 }
361 if (de)
362 *res_page = ipage;
363 else
364 f2fs_put_page(ipage, 0);
365
366 return de;
367 }
368
f2fs_make_empty_inline_dir(struct inode * inode,struct inode * parent,struct page * ipage)369 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
370 struct page *ipage)
371 {
372 struct f2fs_dentry_ptr d;
373 void *inline_dentry;
374
375 inline_dentry = inline_data_addr(inode, ipage);
376
377 make_dentry_ptr_inline(inode, &d, inline_dentry);
378 f2fs_do_make_empty_dir(inode, parent, &d);
379
380 set_page_dirty(ipage);
381
382 /* update i_size to MAX_INLINE_DATA */
383 if (i_size_read(inode) < MAX_INLINE_DATA(inode))
384 f2fs_i_size_write(inode, MAX_INLINE_DATA(inode));
385 return 0;
386 }
387
388 /*
389 * NOTE: ipage is grabbed by caller, but if any error occurs, we should
390 * release ipage in this function.
391 */
f2fs_move_inline_dirents(struct inode * dir,struct page * ipage,void * inline_dentry)392 static int f2fs_move_inline_dirents(struct inode *dir, struct page *ipage,
393 void *inline_dentry)
394 {
395 struct page *page;
396 struct dnode_of_data dn;
397 struct f2fs_dentry_block *dentry_blk;
398 struct f2fs_dentry_ptr src, dst;
399 int err;
400
401 page = f2fs_grab_cache_page(dir->i_mapping, 0, true);
402 if (!page) {
403 f2fs_put_page(ipage, 1);
404 return -ENOMEM;
405 }
406
407 set_new_dnode(&dn, dir, ipage, NULL, 0);
408 err = f2fs_reserve_block(&dn, 0);
409 if (err)
410 goto out;
411
412 if (unlikely(dn.data_blkaddr != NEW_ADDR)) {
413 f2fs_put_dnode(&dn);
414 set_sbi_flag(F2FS_P_SB(page), SBI_NEED_FSCK);
415 f2fs_warn(F2FS_P_SB(page), "%s: corrupted inline inode ino=%lx, i_addr[0]:0x%x, run fsck to fix.",
416 __func__, dir->i_ino, dn.data_blkaddr);
417 f2fs_handle_error(F2FS_P_SB(page), ERROR_INVALID_BLKADDR);
418 err = -EFSCORRUPTED;
419 goto out;
420 }
421
422 f2fs_wait_on_page_writeback(page, DATA, true, true);
423
424 dentry_blk = page_address(page);
425
426 /*
427 * Start by zeroing the full block, to ensure that all unused space is
428 * zeroed and no uninitialized memory is leaked to disk.
429 */
430 memset(dentry_blk, 0, F2FS_BLKSIZE);
431
432 make_dentry_ptr_inline(dir, &src, inline_dentry);
433 make_dentry_ptr_block(dir, &dst, dentry_blk);
434
435 /* copy data from inline dentry block to new dentry block */
436 memcpy(dst.bitmap, src.bitmap, src.nr_bitmap);
437 memcpy(dst.dentry, src.dentry, SIZE_OF_DIR_ENTRY * src.max);
438 memcpy(dst.filename, src.filename, src.max * F2FS_SLOT_LEN);
439
440 if (!PageUptodate(page))
441 SetPageUptodate(page);
442 set_page_dirty(page);
443
444 /* clear inline dir and flag after data writeback */
445 f2fs_truncate_inline_inode(dir, ipage, 0);
446
447 stat_dec_inline_dir(dir);
448 clear_inode_flag(dir, FI_INLINE_DENTRY);
449
450 /*
451 * should retrieve reserved space which was used to keep
452 * inline_dentry's structure for backward compatibility.
453 */
454 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
455 !f2fs_has_inline_xattr(dir))
456 F2FS_I(dir)->i_inline_xattr_size = 0;
457
458 f2fs_i_depth_write(dir, 1);
459 if (i_size_read(dir) < PAGE_SIZE)
460 f2fs_i_size_write(dir, PAGE_SIZE);
461 out:
462 f2fs_put_page(page, 1);
463 return err;
464 }
465
f2fs_add_inline_entries(struct inode * dir,void * inline_dentry)466 static int f2fs_add_inline_entries(struct inode *dir, void *inline_dentry)
467 {
468 struct f2fs_dentry_ptr d;
469 unsigned long bit_pos = 0;
470 int err = 0;
471
472 make_dentry_ptr_inline(dir, &d, inline_dentry);
473
474 while (bit_pos < d.max) {
475 struct f2fs_dir_entry *de;
476 struct f2fs_filename fname;
477 nid_t ino;
478 umode_t fake_mode;
479
480 if (!test_bit_le(bit_pos, d.bitmap)) {
481 bit_pos++;
482 continue;
483 }
484
485 de = &d.dentry[bit_pos];
486
487 if (unlikely(!de->name_len)) {
488 bit_pos++;
489 continue;
490 }
491
492 /*
493 * We only need the disk_name and hash to move the dentry.
494 * We don't need the original or casefolded filenames.
495 */
496 memset(&fname, 0, sizeof(fname));
497 fname.disk_name.name = d.filename[bit_pos];
498 fname.disk_name.len = le16_to_cpu(de->name_len);
499 fname.hash = de->hash_code;
500
501 ino = le32_to_cpu(de->ino);
502 fake_mode = fs_ftype_to_dtype(de->file_type) << S_DT_SHIFT;
503
504 err = f2fs_add_regular_entry(dir, &fname, NULL, ino, fake_mode);
505 if (err)
506 goto punch_dentry_pages;
507
508 bit_pos += GET_DENTRY_SLOTS(le16_to_cpu(de->name_len));
509 }
510 return 0;
511 punch_dentry_pages:
512 truncate_inode_pages(&dir->i_data, 0);
513 f2fs_truncate_blocks(dir, 0, false);
514 f2fs_remove_dirty_inode(dir);
515 return err;
516 }
517
f2fs_move_rehashed_dirents(struct inode * dir,struct page * ipage,void * inline_dentry)518 static int f2fs_move_rehashed_dirents(struct inode *dir, struct page *ipage,
519 void *inline_dentry)
520 {
521 void *backup_dentry;
522 int err;
523
524 backup_dentry = f2fs_kmalloc(F2FS_I_SB(dir),
525 MAX_INLINE_DATA(dir), GFP_F2FS_ZERO);
526 if (!backup_dentry) {
527 f2fs_put_page(ipage, 1);
528 return -ENOMEM;
529 }
530
531 memcpy(backup_dentry, inline_dentry, MAX_INLINE_DATA(dir));
532 f2fs_truncate_inline_inode(dir, ipage, 0);
533
534 unlock_page(ipage);
535
536 err = f2fs_add_inline_entries(dir, backup_dentry);
537 if (err)
538 goto recover;
539
540 lock_page(ipage);
541
542 stat_dec_inline_dir(dir);
543 clear_inode_flag(dir, FI_INLINE_DENTRY);
544
545 /*
546 * should retrieve reserved space which was used to keep
547 * inline_dentry's structure for backward compatibility.
548 */
549 if (!f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(dir)) &&
550 !f2fs_has_inline_xattr(dir))
551 F2FS_I(dir)->i_inline_xattr_size = 0;
552
553 kfree(backup_dentry);
554 return 0;
555 recover:
556 lock_page(ipage);
557 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
558 memcpy(inline_dentry, backup_dentry, MAX_INLINE_DATA(dir));
559 f2fs_i_depth_write(dir, 0);
560 f2fs_i_size_write(dir, MAX_INLINE_DATA(dir));
561 set_page_dirty(ipage);
562 f2fs_put_page(ipage, 1);
563
564 kfree(backup_dentry);
565 return err;
566 }
567
do_convert_inline_dir(struct inode * dir,struct page * ipage,void * inline_dentry)568 static int do_convert_inline_dir(struct inode *dir, struct page *ipage,
569 void *inline_dentry)
570 {
571 if (!F2FS_I(dir)->i_dir_level)
572 return f2fs_move_inline_dirents(dir, ipage, inline_dentry);
573 else
574 return f2fs_move_rehashed_dirents(dir, ipage, inline_dentry);
575 }
576
f2fs_try_convert_inline_dir(struct inode * dir,struct dentry * dentry)577 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry)
578 {
579 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
580 struct page *ipage;
581 struct f2fs_filename fname;
582 void *inline_dentry = NULL;
583 int err = 0;
584
585 if (!f2fs_has_inline_dentry(dir))
586 return 0;
587
588 f2fs_lock_op(sbi);
589
590 err = f2fs_setup_filename(dir, &dentry->d_name, 0, &fname);
591 if (err)
592 goto out;
593
594 ipage = f2fs_get_node_page(sbi, dir->i_ino);
595 if (IS_ERR(ipage)) {
596 err = PTR_ERR(ipage);
597 goto out_fname;
598 }
599
600 if (f2fs_has_enough_room(dir, ipage, &fname)) {
601 f2fs_put_page(ipage, 1);
602 goto out_fname;
603 }
604
605 inline_dentry = inline_data_addr(dir, ipage);
606
607 err = do_convert_inline_dir(dir, ipage, inline_dentry);
608 if (!err)
609 f2fs_put_page(ipage, 1);
610 out_fname:
611 f2fs_free_filename(&fname);
612 out:
613 f2fs_unlock_op(sbi);
614 return err;
615 }
616
f2fs_add_inline_entry(struct inode * dir,const struct f2fs_filename * fname,struct inode * inode,nid_t ino,umode_t mode)617 int f2fs_add_inline_entry(struct inode *dir, const struct f2fs_filename *fname,
618 struct inode *inode, nid_t ino, umode_t mode)
619 {
620 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
621 struct page *ipage;
622 unsigned int bit_pos;
623 void *inline_dentry = NULL;
624 struct f2fs_dentry_ptr d;
625 int slots = GET_DENTRY_SLOTS(fname->disk_name.len);
626 struct page *page = NULL;
627 int err = 0;
628
629 ipage = f2fs_get_node_page(sbi, dir->i_ino);
630 if (IS_ERR(ipage))
631 return PTR_ERR(ipage);
632
633 inline_dentry = inline_data_addr(dir, ipage);
634 make_dentry_ptr_inline(dir, &d, inline_dentry);
635
636 bit_pos = f2fs_room_for_filename(d.bitmap, slots, d.max);
637 if (bit_pos >= d.max) {
638 err = do_convert_inline_dir(dir, ipage, inline_dentry);
639 if (err)
640 return err;
641 err = -EAGAIN;
642 goto out;
643 }
644
645 if (inode) {
646 f2fs_down_write_nested(&F2FS_I(inode)->i_sem,
647 SINGLE_DEPTH_NESTING);
648 page = f2fs_init_inode_metadata(inode, dir, fname, ipage);
649 if (IS_ERR(page)) {
650 err = PTR_ERR(page);
651 goto fail;
652 }
653 }
654
655 f2fs_wait_on_page_writeback(ipage, NODE, true, true);
656
657 f2fs_update_dentry(ino, mode, &d, &fname->disk_name, fname->hash,
658 bit_pos);
659
660 set_page_dirty(ipage);
661
662 /* we don't need to mark_inode_dirty now */
663 if (inode) {
664 f2fs_i_pino_write(inode, dir->i_ino);
665
666 /* synchronize inode page's data from inode cache */
667 if (is_inode_flag_set(inode, FI_NEW_INODE))
668 f2fs_update_inode(inode, page);
669
670 f2fs_put_page(page, 1);
671 }
672
673 f2fs_update_parent_metadata(dir, inode, 0);
674 fail:
675 if (inode)
676 f2fs_up_write(&F2FS_I(inode)->i_sem);
677 out:
678 f2fs_put_page(ipage, 1);
679 return err;
680 }
681
f2fs_delete_inline_entry(struct f2fs_dir_entry * dentry,struct page * page,struct inode * dir,struct inode * inode)682 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry, struct page *page,
683 struct inode *dir, struct inode *inode)
684 {
685 struct f2fs_dentry_ptr d;
686 void *inline_dentry;
687 int slots = GET_DENTRY_SLOTS(le16_to_cpu(dentry->name_len));
688 unsigned int bit_pos;
689 int i;
690
691 lock_page(page);
692 f2fs_wait_on_page_writeback(page, NODE, true, true);
693
694 inline_dentry = inline_data_addr(dir, page);
695 make_dentry_ptr_inline(dir, &d, inline_dentry);
696
697 bit_pos = dentry - d.dentry;
698 for (i = 0; i < slots; i++)
699 __clear_bit_le(bit_pos + i, d.bitmap);
700
701 set_page_dirty(page);
702 f2fs_put_page(page, 1);
703
704 dir->i_mtime = inode_set_ctime_current(dir);
705 f2fs_mark_inode_dirty_sync(dir, false);
706
707 if (inode)
708 f2fs_drop_nlink(dir, inode);
709 }
710
f2fs_empty_inline_dir(struct inode * dir)711 bool f2fs_empty_inline_dir(struct inode *dir)
712 {
713 struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
714 struct page *ipage;
715 unsigned int bit_pos = 2;
716 void *inline_dentry;
717 struct f2fs_dentry_ptr d;
718
719 ipage = f2fs_get_node_page(sbi, dir->i_ino);
720 if (IS_ERR(ipage))
721 return false;
722
723 inline_dentry = inline_data_addr(dir, ipage);
724 make_dentry_ptr_inline(dir, &d, inline_dentry);
725
726 bit_pos = find_next_bit_le(d.bitmap, d.max, bit_pos);
727
728 f2fs_put_page(ipage, 1);
729
730 if (bit_pos < d.max)
731 return false;
732
733 return true;
734 }
735
f2fs_read_inline_dir(struct file * file,struct dir_context * ctx,struct fscrypt_str * fstr)736 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
737 struct fscrypt_str *fstr)
738 {
739 struct inode *inode = file_inode(file);
740 struct page *ipage = NULL;
741 struct f2fs_dentry_ptr d;
742 void *inline_dentry = NULL;
743 int err;
744
745 make_dentry_ptr_inline(inode, &d, inline_dentry);
746
747 if (ctx->pos == d.max)
748 return 0;
749
750 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
751 if (IS_ERR(ipage))
752 return PTR_ERR(ipage);
753
754 /*
755 * f2fs_readdir was protected by inode.i_rwsem, it is safe to access
756 * ipage without page's lock held.
757 */
758 unlock_page(ipage);
759
760 inline_dentry = inline_data_addr(inode, ipage);
761
762 make_dentry_ptr_inline(inode, &d, inline_dentry);
763
764 err = f2fs_fill_dentries(ctx, &d, 0, fstr);
765 if (!err)
766 ctx->pos = d.max;
767
768 f2fs_put_page(ipage, 0);
769 return err < 0 ? err : 0;
770 }
771
f2fs_inline_data_fiemap(struct inode * inode,struct fiemap_extent_info * fieinfo,__u64 start,__u64 len)772 int f2fs_inline_data_fiemap(struct inode *inode,
773 struct fiemap_extent_info *fieinfo, __u64 start, __u64 len)
774 {
775 __u64 byteaddr, ilen;
776 __u32 flags = FIEMAP_EXTENT_DATA_INLINE | FIEMAP_EXTENT_NOT_ALIGNED |
777 FIEMAP_EXTENT_LAST;
778 struct node_info ni;
779 struct page *ipage;
780 int err = 0;
781
782 ipage = f2fs_get_node_page(F2FS_I_SB(inode), inode->i_ino);
783 if (IS_ERR(ipage))
784 return PTR_ERR(ipage);
785
786 if ((S_ISREG(inode->i_mode) || S_ISLNK(inode->i_mode)) &&
787 !f2fs_has_inline_data(inode)) {
788 err = -EAGAIN;
789 goto out;
790 }
791
792 if (S_ISDIR(inode->i_mode) && !f2fs_has_inline_dentry(inode)) {
793 err = -EAGAIN;
794 goto out;
795 }
796
797 ilen = min_t(size_t, MAX_INLINE_DATA(inode), i_size_read(inode));
798 if (start >= ilen)
799 goto out;
800 if (start + len < ilen)
801 ilen = start + len;
802 ilen -= start;
803
804 err = f2fs_get_node_info(F2FS_I_SB(inode), inode->i_ino, &ni, false);
805 if (err)
806 goto out;
807
808 byteaddr = (__u64)ni.blk_addr << inode->i_sb->s_blocksize_bits;
809 byteaddr += (char *)inline_data_addr(inode, ipage) -
810 (char *)F2FS_INODE(ipage);
811 err = fiemap_fill_next_extent(fieinfo, start, byteaddr, ilen, flags);
812 trace_f2fs_fiemap(inode, start, byteaddr, ilen, flags, err);
813 out:
814 f2fs_put_page(ipage, 1);
815 return err;
816 }
817