source: mainline/uspace/lib/ext4/libext4_balloc.c@ 2764497

lfn serial ticket/834-toolchain-update topic/msim-upgrade topic/simplify-dev-export
Last change on this file since 2764497 was 2764497, checked in by Maurizio Lombardi <m.lombardi85@…>, 12 years ago

libext4: modify ext4_balloc_find_goal() to report the correct error to the caller.
  • Property mode set to 100644
File size: 18.8 KB
Line 
1/*
2 * Copyright (c) 2012 Frantisek Princ
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * - Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * - Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * - The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29/** @addtogroup libext4
30 * @{
31 */
32/**
33 * @file libext4_balloc.c
34 * @brief Physical block allocator.
35 */
36
37#include <errno.h>
38#include <sys/types.h>
39#include "libext4.h"
40
41/** Compute number of block group from block address.
42 *
43 * @param sb Superblock pointer.
44 * @param block_addr Absolute address of block.
45 *
46 * @return Block group index
47 *
48 */
49static uint32_t ext4_balloc_get_bgid_of_block(ext4_superblock_t *sb,
50 uint32_t block_addr)
51{
52 uint32_t blocks_per_group =
53 ext4_superblock_get_blocks_per_group(sb);
54 uint32_t first_block =
55 ext4_superblock_get_first_data_block(sb);
56
57 /* First block == 0 or 1 */
58 if (first_block == 0)
59 return block_addr / blocks_per_group;
60 else
61 return (block_addr - 1) / blocks_per_group;
62}
63
64/** Free block.
65 *
66 * @param inode_ref Inode, where the block is allocated
67 * @param block_addr Absolute block address to free
68 *
69 * @return Error code
70 *
71 */
72int ext4_balloc_free_block(ext4_inode_ref_t *inode_ref, uint32_t block_addr)
73{
74 ext4_filesystem_t *fs = inode_ref->fs;
75 ext4_superblock_t *sb = fs->superblock;
76
77 /* Compute indexes */
78 uint32_t block_group = ext4_balloc_get_bgid_of_block(sb, block_addr);
79 uint32_t index_in_group =
80 ext4_filesystem_blockaddr2_index_in_group(sb, block_addr);
81
82 /* Load block group reference */
83 ext4_block_group_ref_t *bg_ref;
84 int rc = ext4_filesystem_get_block_group_ref(fs, block_group, &bg_ref);
85 if (rc != EOK)
86 return rc;
87
88 /* Load block with bitmap */
89 uint32_t bitmap_block_addr =
90 ext4_block_group_get_block_bitmap(bg_ref->block_group, sb);
91 block_t *bitmap_block;
92 rc = block_get(&bitmap_block, fs->device, bitmap_block_addr, 0);
93 if (rc != EOK)
94 return rc;
95
96 /* Modify bitmap */
97 ext4_bitmap_free_bit(bitmap_block->data, index_in_group);
98 bitmap_block->dirty = true;
99
100 /* Release block with bitmap */
101 rc = block_put(bitmap_block);
102 if (rc != EOK) {
103 /* Error in saving bitmap */
104 ext4_filesystem_put_block_group_ref(bg_ref);
105 return rc;
106 }
107
108 uint32_t block_size = ext4_superblock_get_block_size(sb);
109
110 /* Update superblock free blocks count */
111 uint32_t sb_free_blocks =
112 ext4_superblock_get_free_blocks_count(sb);
113 sb_free_blocks++;
114 ext4_superblock_set_free_blocks_count(sb, sb_free_blocks);
115
116 /* Update inode blocks count */
117 uint64_t ino_blocks =
118 ext4_inode_get_blocks_count(sb, inode_ref->inode);
119 ino_blocks -= block_size / EXT4_INODE_BLOCK_SIZE;
120 ext4_inode_set_blocks_count(sb, inode_ref->inode, ino_blocks);
121 inode_ref->dirty = true;
122
123 /* Update block group free blocks count */
124 uint32_t free_blocks =
125 ext4_block_group_get_free_blocks_count(bg_ref->block_group, sb);
126 free_blocks++;
127 ext4_block_group_set_free_blocks_count(bg_ref->block_group,
128 sb, free_blocks);
129 bg_ref->dirty = true;
130
131 /* Release block group reference */
132 rc = ext4_filesystem_put_block_group_ref(bg_ref);
133 if (rc != EOK)
134 return rc;
135
136 return EOK;
137}
138
139/** Free continuous set of blocks.
140 *
141 * @param inode_ref Inode, where the blocks are allocated
142 * @param first First block to release
143 * @param count Number of blocks to release
144 *
145 */
146int ext4_balloc_free_blocks(ext4_inode_ref_t *inode_ref,
147 uint32_t first, uint32_t count)
148{
149 ext4_filesystem_t *fs = inode_ref->fs;
150 ext4_superblock_t *sb = fs->superblock;
151
152 /* Compute indexes */
153 uint32_t block_group_first =
154 ext4_balloc_get_bgid_of_block(sb, first);
155 uint32_t block_group_last =
156 ext4_balloc_get_bgid_of_block(sb, first + count - 1);
157
158 assert(block_group_first == block_group_last);
159
160 /* Load block group reference */
161 ext4_block_group_ref_t *bg_ref;
162 int rc = ext4_filesystem_get_block_group_ref(fs, block_group_first, &bg_ref);
163 if (rc != EOK)
164 return rc;
165
166 uint32_t index_in_group_first =
167 ext4_filesystem_blockaddr2_index_in_group(sb, first);
168
169 /* Load block with bitmap */
170 uint32_t bitmap_block_addr =
171 ext4_block_group_get_block_bitmap(bg_ref->block_group, sb);
172
173 block_t *bitmap_block;
174 rc = block_get(&bitmap_block, fs->device, bitmap_block_addr, 0);
175 if (rc != EOK)
176 return rc;
177
178 /* Modify bitmap */
179 ext4_bitmap_free_bits(bitmap_block->data, index_in_group_first, count);
180 bitmap_block->dirty = true;
181
182 /* Release block with bitmap */
183 rc = block_put(bitmap_block);
184 if (rc != EOK) {
185 /* Error in saving bitmap */
186 ext4_filesystem_put_block_group_ref(bg_ref);
187 return rc;
188 }
189
190 uint32_t block_size = ext4_superblock_get_block_size(sb);
191
192 /* Update superblock free blocks count */
193 uint32_t sb_free_blocks =
194 ext4_superblock_get_free_blocks_count(sb);
195 sb_free_blocks += count;
196 ext4_superblock_set_free_blocks_count(sb, sb_free_blocks);
197
198 /* Update inode blocks count */
199 uint64_t ino_blocks =
200 ext4_inode_get_blocks_count(sb, inode_ref->inode);
201 ino_blocks -= count * (block_size / EXT4_INODE_BLOCK_SIZE);
202 ext4_inode_set_blocks_count(sb, inode_ref->inode, ino_blocks);
203 inode_ref->dirty = true;
204
205 /* Update block group free blocks count */
206 uint32_t free_blocks =
207 ext4_block_group_get_free_blocks_count(bg_ref->block_group, sb);
208 free_blocks += count;
209 ext4_block_group_set_free_blocks_count(bg_ref->block_group,
210 sb, free_blocks);
211 bg_ref->dirty = true;
212
213 /* Release block group reference */
214 rc = ext4_filesystem_put_block_group_ref(bg_ref);
215 if (rc != EOK)
216 return rc;
217
218 return EOK;
219}
220
221/** Compute first block for data in block group.
222 *
223 * @param sb Pointer to superblock
224 * @param bg Pointer to block group
225 * @param bgid Index of block group
226 *
227 * @return Absolute block index of first block
228 *
229 */
230uint32_t ext4_balloc_get_first_data_block_in_group(ext4_superblock_t *sb,
231 ext4_block_group_ref_t *bg_ref)
232{
233 uint32_t block_group_count = ext4_superblock_get_block_group_count(sb);
234 uint32_t inode_table_first_block =
235 ext4_block_group_get_inode_table_first_block(bg_ref->block_group, sb);
236 uint16_t inode_table_item_size = ext4_superblock_get_inode_size(sb);
237 uint32_t inodes_per_group = ext4_superblock_get_inodes_per_group(sb);
238 uint32_t block_size = ext4_superblock_get_block_size(sb);
239 uint32_t inode_table_bytes;
240
241 if (bg_ref->index < block_group_count - 1) {
242 inode_table_bytes = inodes_per_group * inode_table_item_size;
243 } else {
244 /* Last block group could be smaller */
245 uint32_t inodes_count_total = ext4_superblock_get_inodes_count(sb);
246 inode_table_bytes =
247 (inodes_count_total - ((block_group_count - 1) * inodes_per_group)) *
248 inode_table_item_size;
249 }
250
251 uint32_t inode_table_blocks = inode_table_bytes / block_size;
252
253 if (inode_table_bytes % block_size)
254 inode_table_blocks++;
255
256 return inode_table_first_block + inode_table_blocks;
257}
258
259/** Compute 'goal' for allocation algorithm.
260 *
261 * @param inode_ref Reference to inode, to allocate block for
262 *
263 * @return Goal block number
264 *
265 */
266static int ext4_balloc_find_goal(ext4_inode_ref_t *inode_ref, uint32_t *goal)
267{
268 *goal = 0;
269 ext4_superblock_t *sb = inode_ref->fs->superblock;
270
271 uint64_t inode_size = ext4_inode_get_size(sb, inode_ref->inode);
272 uint32_t block_size = ext4_superblock_get_block_size(sb);
273 uint32_t inode_block_count = inode_size / block_size;
274
275 if (inode_size % block_size != 0)
276 inode_block_count++;
277
278 /* If inode has some blocks, get last block address + 1 */
279 if (inode_block_count > 0) {
280 int rc = ext4_filesystem_get_inode_data_block_index(inode_ref,
281 inode_block_count - 1, goal);
282 if (rc != EOK)
283 return rc;
284
285 if (goal != 0) {
286 (*goal)++;
287 return EOK;
288 }
289
290 /* If goal == 0, sparse file -> continue */
291 }
292
293 /* Identify block group of inode */
294 uint32_t inodes_per_group = ext4_superblock_get_inodes_per_group(sb);
295 uint32_t block_group = (inode_ref->index - 1) / inodes_per_group;
296 block_size = ext4_superblock_get_block_size(sb);
297
298 /* Load block group reference */
299 ext4_block_group_ref_t *bg_ref;
300 int rc = ext4_filesystem_get_block_group_ref(inode_ref->fs,
301 block_group, &bg_ref);
302 if (rc != EOK)
303 return rc;
304
305 /* Compute indexes */
306 uint32_t block_group_count = ext4_superblock_get_block_group_count(sb);
307 uint32_t inode_table_first_block =
308 ext4_block_group_get_inode_table_first_block(bg_ref->block_group, sb);
309 uint16_t inode_table_item_size = ext4_superblock_get_inode_size(sb);
310 uint32_t inode_table_bytes;
311
312 /* Check for last block group */
313 if (block_group < block_group_count - 1) {
314 inode_table_bytes = inodes_per_group * inode_table_item_size;
315 } else {
316 /* Last block group could be smaller */
317 uint32_t inodes_count_total = ext4_superblock_get_inodes_count(sb);
318 inode_table_bytes =
319 (inodes_count_total - ((block_group_count - 1) * inodes_per_group)) *
320 inode_table_item_size;
321 }
322
323 uint32_t inode_table_blocks = inode_table_bytes / block_size;
324
325 if (inode_table_bytes % block_size)
326 inode_table_blocks++;
327
328 *goal = inode_table_first_block + inode_table_blocks;
329
330 ext4_filesystem_put_block_group_ref(bg_ref);
331
332 return EOK;
333}
334
335/** Data block allocation algorithm.
336 *
337 * @param inode_ref Inode to allocate block for
338 * @param fblock Allocated block address
339 *
340 * @return Error code
341 *
342 */
343int ext4_balloc_alloc_block(ext4_inode_ref_t *inode_ref, uint32_t *fblock)
344{
345 uint32_t allocated_block = 0;
346
347 uint32_t bitmap_block_addr;
348 block_t *bitmap_block;
349 uint32_t rel_block_idx = 0;
350 uint32_t goal;
351
352 /* Find GOAL */
353 int rc = ext4_balloc_find_goal(inode_ref, &goal);
354 if (rc != EOK)
355 return rc;
356 else if (goal == 0) {
357 /* no goal found => partition is full */
358 return ENOMEM;
359 }
360
361 ext4_superblock_t *sb = inode_ref->fs->superblock;
362
363 /* Load block group number for goal and relative index */
364 uint32_t block_group = ext4_balloc_get_bgid_of_block(sb, goal);
365 uint32_t index_in_group =
366 ext4_filesystem_blockaddr2_index_in_group(sb, goal);
367
368 /* Load block group reference */
369 ext4_block_group_ref_t *bg_ref;
370 rc = ext4_filesystem_get_block_group_ref(inode_ref->fs,
371 block_group, &bg_ref);
372 if (rc != EOK)
373 return rc;
374
375 /* Compute indexes */
376 uint32_t first_in_group =
377 ext4_balloc_get_first_data_block_in_group(sb, bg_ref);
378
379 uint32_t first_in_group_index =
380 ext4_filesystem_blockaddr2_index_in_group(sb, first_in_group);
381
382 if (index_in_group < first_in_group_index)
383 index_in_group = first_in_group_index;
384
385 /* Load block with bitmap */
386 bitmap_block_addr =
387 ext4_block_group_get_block_bitmap(bg_ref->block_group, sb);
388
389 rc = block_get(&bitmap_block, inode_ref->fs->device,
390 bitmap_block_addr, BLOCK_FLAGS_NONE);
391 if (rc != EOK) {
392 ext4_filesystem_put_block_group_ref(bg_ref);
393 return rc;
394 }
395
396 /* Check if goal is free */
397 if (ext4_bitmap_is_free_bit(bitmap_block->data, index_in_group)) {
398 ext4_bitmap_set_bit(bitmap_block->data, index_in_group);
399 bitmap_block->dirty = true;
400 rc = block_put(bitmap_block);
401 if (rc != EOK) {
402 ext4_filesystem_put_block_group_ref(bg_ref);
403 return rc;
404 }
405
406 allocated_block =
407 ext4_filesystem_index_in_group2blockaddr(sb, index_in_group,
408 block_group);
409
410 goto success;
411 }
412
413 uint32_t blocks_in_group =
414 ext4_superblock_get_blocks_in_group(sb, block_group);
415
416 uint32_t end_idx = (index_in_group + 63) & ~63;
417 if (end_idx > blocks_in_group)
418 end_idx = blocks_in_group;
419
420 /* Try to find free block near to goal */
421 for (uint32_t tmp_idx = index_in_group + 1; tmp_idx < end_idx;
422 ++tmp_idx) {
423 if (ext4_bitmap_is_free_bit(bitmap_block->data, tmp_idx)) {
424 ext4_bitmap_set_bit(bitmap_block->data, tmp_idx);
425 bitmap_block->dirty = true;
426 rc = block_put(bitmap_block);
427 if (rc != EOK)
428 return rc;
429
430 allocated_block =
431 ext4_filesystem_index_in_group2blockaddr(sb, tmp_idx,
432 block_group);
433
434 goto success;
435 }
436 }
437
438 /* Find free BYTE in bitmap */
439 rc = ext4_bitmap_find_free_byte_and_set_bit(bitmap_block->data,
440 index_in_group, &rel_block_idx, blocks_in_group);
441 if (rc == EOK) {
442 bitmap_block->dirty = true;
443 rc = block_put(bitmap_block);
444 if (rc != EOK)
445 return rc;
446
447 allocated_block =
448 ext4_filesystem_index_in_group2blockaddr(sb, rel_block_idx,
449 block_group);
450
451 goto success;
452 }
453
454 /* Find free bit in bitmap */
455 rc = ext4_bitmap_find_free_bit_and_set(bitmap_block->data,
456 index_in_group, &rel_block_idx, blocks_in_group);
457 if (rc == EOK) {
458 bitmap_block->dirty = true;
459 rc = block_put(bitmap_block);
460 if (rc != EOK)
461 return rc;
462
463 allocated_block =
464 ext4_filesystem_index_in_group2blockaddr(sb, rel_block_idx,
465 block_group);
466
467 goto success;
468 }
469
470 /* No free block found yet */
471 block_put(bitmap_block);
472 ext4_filesystem_put_block_group_ref(bg_ref);
473
474 /* Try other block groups */
475 uint32_t block_group_count = ext4_superblock_get_block_group_count(sb);
476
477 uint32_t bgid = (block_group + 1) % block_group_count;
478 uint32_t count = block_group_count;
479
480 while (count > 0) {
481 rc = ext4_filesystem_get_block_group_ref(inode_ref->fs, bgid,
482 &bg_ref);
483 if (rc != EOK)
484 return rc;
485
486 /* Load block with bitmap */
487 bitmap_block_addr =
488 ext4_block_group_get_block_bitmap(bg_ref->block_group, sb);
489
490 rc = block_get(&bitmap_block, inode_ref->fs->device,
491 bitmap_block_addr, 0);
492 if (rc != EOK) {
493 ext4_filesystem_put_block_group_ref(bg_ref);
494 return rc;
495 }
496
497 /* Compute indexes */
498 first_in_group =
499 ext4_balloc_get_first_data_block_in_group(sb, bg_ref);
500 index_in_group =
501 ext4_filesystem_blockaddr2_index_in_group(sb, first_in_group);
502 blocks_in_group = ext4_superblock_get_blocks_in_group(sb, bgid);
503
504 first_in_group_index =
505 ext4_filesystem_blockaddr2_index_in_group(sb, first_in_group);
506
507 if (index_in_group < first_in_group_index)
508 index_in_group = first_in_group_index;
509
510 /* Try to find free byte in bitmap */
511 rc = ext4_bitmap_find_free_byte_and_set_bit(bitmap_block->data,
512 index_in_group, &rel_block_idx, blocks_in_group);
513 if (rc == EOK) {
514 bitmap_block->dirty = true;
515 rc = block_put(bitmap_block);
516 if (rc != EOK)
517 return rc;
518
519 allocated_block =
520 ext4_filesystem_index_in_group2blockaddr(sb, rel_block_idx,
521 bgid);
522
523 goto success;
524 }
525
526 /* Try to find free bit in bitmap */
527 rc = ext4_bitmap_find_free_bit_and_set(bitmap_block->data,
528 index_in_group, &rel_block_idx, blocks_in_group);
529 if (rc == EOK) {
530 bitmap_block->dirty = true;
531 rc = block_put(bitmap_block);
532 if (rc != EOK)
533 return rc;
534
535 allocated_block =
536 ext4_filesystem_index_in_group2blockaddr(sb, rel_block_idx,
537 bgid);
538
539 goto success;
540 }
541
542 block_put(bitmap_block);
543 ext4_filesystem_put_block_group_ref(bg_ref);
544
545 /* Goto next group */
546 bgid = (bgid + 1) % block_group_count;
547 count--;
548 }
549
550 return ENOSPC;
551
552success:
553 /* Empty command - because of syntax */
554 ;
555
556 uint32_t block_size = ext4_superblock_get_block_size(sb);
557
558 /* Update superblock free blocks count */
559 uint32_t sb_free_blocks = ext4_superblock_get_free_blocks_count(sb);
560 sb_free_blocks--;
561 ext4_superblock_set_free_blocks_count(sb, sb_free_blocks);
562
563 /* Update inode blocks (different block size!) count */
564 uint64_t ino_blocks =
565 ext4_inode_get_blocks_count(sb, inode_ref->inode);
566 ino_blocks += block_size / EXT4_INODE_BLOCK_SIZE;
567 ext4_inode_set_blocks_count(sb, inode_ref->inode, ino_blocks);
568 inode_ref->dirty = true;
569
570 /* Update block group free blocks count */
571 uint32_t bg_free_blocks =
572 ext4_block_group_get_free_blocks_count(bg_ref->block_group, sb);
573 bg_free_blocks--;
574 ext4_block_group_set_free_blocks_count(bg_ref->block_group, sb,
575 bg_free_blocks);
576 bg_ref->dirty = true;
577
578 ext4_filesystem_put_block_group_ref(bg_ref);
579
580 *fblock = allocated_block;
581 return EOK;
582}
583
584/** Try to allocate concrete block.
585 *
586 * @param inode_ref Inode to allocate block for
587 * @param fblock Block address to allocate
588 * @param free Output value - if target block is free
589 *
590 * @return Error code
591 *
592 */
593int ext4_balloc_try_alloc_block(ext4_inode_ref_t *inode_ref, uint32_t fblock,
594 bool *free)
595{
596 int rc = EOK;
597
598 ext4_filesystem_t *fs = inode_ref->fs;
599 ext4_superblock_t *sb = fs->superblock;
600
601 /* Compute indexes */
602 uint32_t block_group = ext4_balloc_get_bgid_of_block(sb, fblock);
603 uint32_t index_in_group =
604 ext4_filesystem_blockaddr2_index_in_group(sb, fblock);
605
606 /* Load block group reference */
607 ext4_block_group_ref_t *bg_ref;
608 rc = ext4_filesystem_get_block_group_ref(fs, block_group, &bg_ref);
609 if (rc != EOK)
610 return rc;
611
612 /* Load block with bitmap */
613 uint32_t bitmap_block_addr =
614 ext4_block_group_get_block_bitmap(bg_ref->block_group, sb);
615 block_t *bitmap_block;
616 rc = block_get(&bitmap_block, fs->device, bitmap_block_addr, 0);
617 if (rc != EOK)
618 return rc;
619
620 /* Check if block is free */
621 *free = ext4_bitmap_is_free_bit(bitmap_block->data, index_in_group);
622
623 /* Allocate block if possible */
624 if (*free) {
625 ext4_bitmap_set_bit(bitmap_block->data, index_in_group);
626 bitmap_block->dirty = true;
627 }
628
629 /* Release block with bitmap */
630 rc = block_put(bitmap_block);
631 if (rc != EOK) {
632 /* Error in saving bitmap */
633 ext4_filesystem_put_block_group_ref(bg_ref);
634 return rc;
635 }
636
637 /* If block is not free, return */
638 if (!(*free))
639 goto terminate;
640
641 uint32_t block_size = ext4_superblock_get_block_size(sb);
642
643 /* Update superblock free blocks count */
644 uint32_t sb_free_blocks = ext4_superblock_get_free_blocks_count(sb);
645 sb_free_blocks--;
646 ext4_superblock_set_free_blocks_count(sb, sb_free_blocks);
647
648 /* Update inode blocks count */
649 uint64_t ino_blocks =
650 ext4_inode_get_blocks_count(sb, inode_ref->inode);
651 ino_blocks += block_size / EXT4_INODE_BLOCK_SIZE;
652 ext4_inode_set_blocks_count(sb, inode_ref->inode, ino_blocks);
653 inode_ref->dirty = true;
654
655 /* Update block group free blocks count */
656 uint32_t free_blocks =
657 ext4_block_group_get_free_blocks_count(bg_ref->block_group, sb);
658 free_blocks--;
659 ext4_block_group_set_free_blocks_count(bg_ref->block_group,
660 sb, free_blocks);
661 bg_ref->dirty = true;
662
663terminate:
664 return ext4_filesystem_put_block_group_ref(bg_ref);
665}
666
667/**
668 * @}
669 */
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