ocfs2: Simplify ocfs2_read_block()
[linux-2.6.git] / fs / ocfs2 / resize.c
1 /* -*- mode: c; c-basic-offset: 8; -*-
2  * vim: noexpandtab sw=8 ts=8 sts=0:
3  *
4  * resize.c
5  *
6  * volume resize.
7  * Inspired by ext3/resize.c.
8  *
9  * Copyright (C) 2007 Oracle.  All rights reserved.
10  *
11  * This program is free software; you can redistribute it and/or
12  * modify it under the terms of the GNU General Public
13  * License as published by the Free Software Foundation; either
14  * version 2 of the License, or (at your option) any later version.
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
19  * General Public License for more details.
20  *
21  * You should have received a copy of the GNU General Public
22  * License along with this program; if not, write to the
23  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24  * Boston, MA 021110-1307, USA.
25  */
26
27 #include <linux/fs.h>
28 #include <linux/types.h>
29
30 #define MLOG_MASK_PREFIX ML_DISK_ALLOC
31 #include <cluster/masklog.h>
32
33 #include "ocfs2.h"
34
35 #include "alloc.h"
36 #include "dlmglue.h"
37 #include "inode.h"
38 #include "journal.h"
39 #include "super.h"
40 #include "sysfile.h"
41 #include "uptodate.h"
42
43 #include "buffer_head_io.h"
44 #include "suballoc.h"
45 #include "resize.h"
46
47 /*
48  * Check whether there are new backup superblocks exist
49  * in the last group. If there are some, mark them or clear
50  * them in the bitmap.
51  *
52  * Return how many backups we find in the last group.
53  */
54 static u16 ocfs2_calc_new_backup_super(struct inode *inode,
55                                        struct ocfs2_group_desc *gd,
56                                        int new_clusters,
57                                        u32 first_new_cluster,
58                                        u16 cl_cpg,
59                                        int set)
60 {
61         int i;
62         u16 backups = 0;
63         u32 cluster;
64         u64 blkno, gd_blkno, lgd_blkno = le64_to_cpu(gd->bg_blkno);
65
66         for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
67                 blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
68                 cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
69
70                 gd_blkno = ocfs2_which_cluster_group(inode, cluster);
71                 if (gd_blkno < lgd_blkno)
72                         continue;
73                 else if (gd_blkno > lgd_blkno)
74                         break;
75
76                 if (set)
77                         ocfs2_set_bit(cluster % cl_cpg,
78                                       (unsigned long *)gd->bg_bitmap);
79                 else
80                         ocfs2_clear_bit(cluster % cl_cpg,
81                                         (unsigned long *)gd->bg_bitmap);
82                 backups++;
83         }
84
85         mlog_exit_void();
86         return backups;
87 }
88
89 static int ocfs2_update_last_group_and_inode(handle_t *handle,
90                                              struct inode *bm_inode,
91                                              struct buffer_head *bm_bh,
92                                              struct buffer_head *group_bh,
93                                              u32 first_new_cluster,
94                                              int new_clusters)
95 {
96         int ret = 0;
97         struct ocfs2_super *osb = OCFS2_SB(bm_inode->i_sb);
98         struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bm_bh->b_data;
99         struct ocfs2_chain_list *cl = &fe->id2.i_chain;
100         struct ocfs2_chain_rec *cr;
101         struct ocfs2_group_desc *group;
102         u16 chain, num_bits, backups = 0;
103         u16 cl_bpc = le16_to_cpu(cl->cl_bpc);
104         u16 cl_cpg = le16_to_cpu(cl->cl_cpg);
105
106         mlog_entry("(new_clusters=%d, first_new_cluster = %u)\n",
107                    new_clusters, first_new_cluster);
108
109         ret = ocfs2_journal_access(handle, bm_inode, group_bh,
110                                    OCFS2_JOURNAL_ACCESS_WRITE);
111         if (ret < 0) {
112                 mlog_errno(ret);
113                 goto out;
114         }
115
116         group = (struct ocfs2_group_desc *)group_bh->b_data;
117
118         /* update the group first. */
119         num_bits = new_clusters * cl_bpc;
120         le16_add_cpu(&group->bg_bits, num_bits);
121         le16_add_cpu(&group->bg_free_bits_count, num_bits);
122
123         /*
124          * check whether there are some new backup superblocks exist in
125          * this group and update the group bitmap accordingly.
126          */
127         if (OCFS2_HAS_COMPAT_FEATURE(osb->sb,
128                                      OCFS2_FEATURE_COMPAT_BACKUP_SB)) {
129                 backups = ocfs2_calc_new_backup_super(bm_inode,
130                                                      group,
131                                                      new_clusters,
132                                                      first_new_cluster,
133                                                      cl_cpg, 1);
134                 le16_add_cpu(&group->bg_free_bits_count, -1 * backups);
135         }
136
137         ret = ocfs2_journal_dirty(handle, group_bh);
138         if (ret < 0) {
139                 mlog_errno(ret);
140                 goto out_rollback;
141         }
142
143         /* update the inode accordingly. */
144         ret = ocfs2_journal_access(handle, bm_inode, bm_bh,
145                                    OCFS2_JOURNAL_ACCESS_WRITE);
146         if (ret < 0) {
147                 mlog_errno(ret);
148                 goto out_rollback;
149         }
150
151         chain = le16_to_cpu(group->bg_chain);
152         cr = (&cl->cl_recs[chain]);
153         le32_add_cpu(&cr->c_total, num_bits);
154         le32_add_cpu(&cr->c_free, num_bits);
155         le32_add_cpu(&fe->id1.bitmap1.i_total, num_bits);
156         le32_add_cpu(&fe->i_clusters, new_clusters);
157
158         if (backups) {
159                 le32_add_cpu(&cr->c_free, -1 * backups);
160                 le32_add_cpu(&fe->id1.bitmap1.i_used, backups);
161         }
162
163         spin_lock(&OCFS2_I(bm_inode)->ip_lock);
164         OCFS2_I(bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
165         le64_add_cpu(&fe->i_size, new_clusters << osb->s_clustersize_bits);
166         spin_unlock(&OCFS2_I(bm_inode)->ip_lock);
167         i_size_write(bm_inode, le64_to_cpu(fe->i_size));
168
169         ocfs2_journal_dirty(handle, bm_bh);
170
171 out_rollback:
172         if (ret < 0) {
173                 ocfs2_calc_new_backup_super(bm_inode,
174                                             group,
175                                             new_clusters,
176                                             first_new_cluster,
177                                             cl_cpg, 0);
178                 le16_add_cpu(&group->bg_free_bits_count, backups);
179                 le16_add_cpu(&group->bg_bits, -1 * num_bits);
180                 le16_add_cpu(&group->bg_free_bits_count, -1 * num_bits);
181         }
182 out:
183         mlog_exit(ret);
184         return ret;
185 }
186
187 static int update_backups(struct inode * inode, u32 clusters, char *data)
188 {
189         int i, ret = 0;
190         u32 cluster;
191         u64 blkno;
192         struct buffer_head *backup = NULL;
193         struct ocfs2_dinode *backup_di = NULL;
194         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
195
196         /* calculate the real backups we need to update. */
197         for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
198                 blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
199                 cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
200                 if (cluster > clusters)
201                         break;
202
203                 ret = ocfs2_read_blocks_sync(osb, blkno, 1, &backup);
204                 if (ret < 0) {
205                         mlog_errno(ret);
206                         break;
207                 }
208
209                 memcpy(backup->b_data, data, inode->i_sb->s_blocksize);
210
211                 backup_di = (struct ocfs2_dinode *)backup->b_data;
212                 backup_di->i_blkno = cpu_to_le64(blkno);
213
214                 ret = ocfs2_write_super_or_backup(osb, backup);
215                 brelse(backup);
216                 backup = NULL;
217                 if (ret < 0) {
218                         mlog_errno(ret);
219                         break;
220                 }
221         }
222
223         return ret;
224 }
225
226 static void ocfs2_update_super_and_backups(struct inode *inode,
227                                            int new_clusters)
228 {
229         int ret;
230         u32 clusters = 0;
231         struct buffer_head *super_bh = NULL;
232         struct ocfs2_dinode *super_di = NULL;
233         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
234
235         /*
236          * update the superblock last.
237          * It doesn't matter if the write failed.
238          */
239         ret = ocfs2_read_blocks_sync(osb, OCFS2_SUPER_BLOCK_BLKNO, 1,
240                                      &super_bh);
241         if (ret < 0) {
242                 mlog_errno(ret);
243                 goto out;
244         }
245
246         super_di = (struct ocfs2_dinode *)super_bh->b_data;
247         le32_add_cpu(&super_di->i_clusters, new_clusters);
248         clusters = le32_to_cpu(super_di->i_clusters);
249
250         ret = ocfs2_write_super_or_backup(osb, super_bh);
251         if (ret < 0) {
252                 mlog_errno(ret);
253                 goto out;
254         }
255
256         if (OCFS2_HAS_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_COMPAT_BACKUP_SB))
257                 ret = update_backups(inode, clusters, super_bh->b_data);
258
259 out:
260         brelse(super_bh);
261         if (ret)
262                 printk(KERN_WARNING "ocfs2: Failed to update super blocks on %s"
263                         " during fs resize. This condition is not fatal,"
264                         " but fsck.ocfs2 should be run to fix it\n",
265                         osb->dev_str);
266         return;
267 }
268
269 /*
270  * Extend the filesystem to the new number of clusters specified.  This entry
271  * point is only used to extend the current filesystem to the end of the last
272  * existing group.
273  */
274 int ocfs2_group_extend(struct inode * inode, int new_clusters)
275 {
276         int ret;
277         handle_t *handle;
278         struct buffer_head *main_bm_bh = NULL;
279         struct buffer_head *group_bh = NULL;
280         struct inode *main_bm_inode = NULL;
281         struct ocfs2_dinode *fe = NULL;
282         struct ocfs2_group_desc *group = NULL;
283         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
284         u16 cl_bpc;
285         u32 first_new_cluster;
286         u64 lgd_blkno;
287
288         mlog_entry_void();
289
290         if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
291                 return -EROFS;
292
293         if (new_clusters < 0)
294                 return -EINVAL;
295         else if (new_clusters == 0)
296                 return 0;
297
298         main_bm_inode = ocfs2_get_system_file_inode(osb,
299                                                     GLOBAL_BITMAP_SYSTEM_INODE,
300                                                     OCFS2_INVALID_SLOT);
301         if (!main_bm_inode) {
302                 ret = -EINVAL;
303                 mlog_errno(ret);
304                 goto out;
305         }
306
307         mutex_lock(&main_bm_inode->i_mutex);
308
309         ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
310         if (ret < 0) {
311                 mlog_errno(ret);
312                 goto out_mutex;
313         }
314
315         fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
316
317         if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
318                                  ocfs2_group_bitmap_size(osb->sb) * 8) {
319                 mlog(ML_ERROR, "The disk is too old and small. "
320                      "Force to do offline resize.");
321                 ret = -EINVAL;
322                 goto out_unlock;
323         }
324
325         if (!OCFS2_IS_VALID_DINODE(fe)) {
326                 OCFS2_RO_ON_INVALID_DINODE(main_bm_inode->i_sb, fe);
327                 ret = -EIO;
328                 goto out_unlock;
329         }
330
331         first_new_cluster = le32_to_cpu(fe->i_clusters);
332         lgd_blkno = ocfs2_which_cluster_group(main_bm_inode,
333                                               first_new_cluster - 1);
334
335         ret = ocfs2_read_block(main_bm_inode, lgd_blkno, &group_bh);
336         if (ret < 0) {
337                 mlog_errno(ret);
338                 goto out_unlock;
339         }
340
341         group = (struct ocfs2_group_desc *)group_bh->b_data;
342
343         ret = ocfs2_check_group_descriptor(inode->i_sb, fe, group);
344         if (ret) {
345                 mlog_errno(ret);
346                 goto out_unlock;
347         }
348
349         cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
350         if (le16_to_cpu(group->bg_bits) / cl_bpc + new_clusters >
351                 le16_to_cpu(fe->id2.i_chain.cl_cpg)) {
352                 ret = -EINVAL;
353                 goto out_unlock;
354         }
355
356         mlog(0, "extend the last group at %llu, new clusters = %d\n",
357              (unsigned long long)le64_to_cpu(group->bg_blkno), new_clusters);
358
359         handle = ocfs2_start_trans(osb, OCFS2_GROUP_EXTEND_CREDITS);
360         if (IS_ERR(handle)) {
361                 mlog_errno(PTR_ERR(handle));
362                 ret = -EINVAL;
363                 goto out_unlock;
364         }
365
366         /* update the last group descriptor and inode. */
367         ret = ocfs2_update_last_group_and_inode(handle, main_bm_inode,
368                                                 main_bm_bh, group_bh,
369                                                 first_new_cluster,
370                                                 new_clusters);
371         if (ret) {
372                 mlog_errno(ret);
373                 goto out_commit;
374         }
375
376         ocfs2_update_super_and_backups(main_bm_inode, new_clusters);
377
378 out_commit:
379         ocfs2_commit_trans(osb, handle);
380 out_unlock:
381         brelse(group_bh);
382         brelse(main_bm_bh);
383
384         ocfs2_inode_unlock(main_bm_inode, 1);
385
386 out_mutex:
387         mutex_unlock(&main_bm_inode->i_mutex);
388         iput(main_bm_inode);
389
390 out:
391         mlog_exit_void();
392         return ret;
393 }
394
395 static int ocfs2_check_new_group(struct inode *inode,
396                                  struct ocfs2_dinode *di,
397                                  struct ocfs2_new_group_input *input,
398                                  struct buffer_head *group_bh)
399 {
400         int ret;
401         struct ocfs2_group_desc *gd;
402         u16 cl_bpc = le16_to_cpu(di->id2.i_chain.cl_bpc);
403         unsigned int max_bits = le16_to_cpu(di->id2.i_chain.cl_cpg) *
404                                 le16_to_cpu(di->id2.i_chain.cl_bpc);
405
406
407         gd = (struct ocfs2_group_desc *)group_bh->b_data;
408
409         ret = -EIO;
410         if (!OCFS2_IS_VALID_GROUP_DESC(gd))
411                 mlog(ML_ERROR, "Group descriptor # %llu isn't valid.\n",
412                      (unsigned long long)le64_to_cpu(gd->bg_blkno));
413         else if (di->i_blkno != gd->bg_parent_dinode)
414                 mlog(ML_ERROR, "Group descriptor # %llu has bad parent "
415                      "pointer (%llu, expected %llu)\n",
416                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
417                      (unsigned long long)le64_to_cpu(gd->bg_parent_dinode),
418                      (unsigned long long)le64_to_cpu(di->i_blkno));
419         else if (le16_to_cpu(gd->bg_bits) > max_bits)
420                 mlog(ML_ERROR, "Group descriptor # %llu has bit count of %u\n",
421                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
422                      le16_to_cpu(gd->bg_bits));
423         else if (le16_to_cpu(gd->bg_free_bits_count) > le16_to_cpu(gd->bg_bits))
424                 mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
425                      "claims that %u are free\n",
426                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
427                      le16_to_cpu(gd->bg_bits),
428                      le16_to_cpu(gd->bg_free_bits_count));
429         else if (le16_to_cpu(gd->bg_bits) > (8 * le16_to_cpu(gd->bg_size)))
430                 mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
431                      "max bitmap bits of %u\n",
432                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
433                      le16_to_cpu(gd->bg_bits),
434                      8 * le16_to_cpu(gd->bg_size));
435         else if (le16_to_cpu(gd->bg_chain) != input->chain)
436                 mlog(ML_ERROR, "Group descriptor # %llu has bad chain %u "
437                      "while input has %u set.\n",
438                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
439                      le16_to_cpu(gd->bg_chain), input->chain);
440         else if (le16_to_cpu(gd->bg_bits) != input->clusters * cl_bpc)
441                 mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
442                      "input has %u clusters set\n",
443                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
444                      le16_to_cpu(gd->bg_bits), input->clusters);
445         else if (le16_to_cpu(gd->bg_free_bits_count) != input->frees * cl_bpc)
446                 mlog(ML_ERROR, "Group descriptor # %llu has free bit count %u "
447                      "but it should have %u set\n",
448                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
449                      le16_to_cpu(gd->bg_bits),
450                      input->frees * cl_bpc);
451         else
452                 ret = 0;
453
454         return ret;
455 }
456
457 static int ocfs2_verify_group_and_input(struct inode *inode,
458                                         struct ocfs2_dinode *di,
459                                         struct ocfs2_new_group_input *input,
460                                         struct buffer_head *group_bh)
461 {
462         u16 cl_count = le16_to_cpu(di->id2.i_chain.cl_count);
463         u16 cl_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg);
464         u16 next_free = le16_to_cpu(di->id2.i_chain.cl_next_free_rec);
465         u32 cluster = ocfs2_blocks_to_clusters(inode->i_sb, input->group);
466         u32 total_clusters = le32_to_cpu(di->i_clusters);
467         int ret = -EINVAL;
468
469         if (cluster < total_clusters)
470                 mlog(ML_ERROR, "add a group which is in the current volume.\n");
471         else if (input->chain >= cl_count)
472                 mlog(ML_ERROR, "input chain exceeds the limit.\n");
473         else if (next_free != cl_count && next_free != input->chain)
474                 mlog(ML_ERROR,
475                      "the add group should be in chain %u\n", next_free);
476         else if (total_clusters + input->clusters < total_clusters)
477                 mlog(ML_ERROR, "add group's clusters overflow.\n");
478         else if (input->clusters > cl_cpg)
479                 mlog(ML_ERROR, "the cluster exceeds the maximum of a group\n");
480         else if (input->frees > input->clusters)
481                 mlog(ML_ERROR, "the free cluster exceeds the total clusters\n");
482         else if (total_clusters % cl_cpg != 0)
483                 mlog(ML_ERROR,
484                      "the last group isn't full. Use group extend first.\n");
485         else if (input->group != ocfs2_which_cluster_group(inode, cluster))
486                 mlog(ML_ERROR, "group blkno is invalid\n");
487         else if ((ret = ocfs2_check_new_group(inode, di, input, group_bh)))
488                 mlog(ML_ERROR, "group descriptor check failed.\n");
489         else
490                 ret = 0;
491
492         return ret;
493 }
494
495 /* Add a new group descriptor to global_bitmap. */
496 int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
497 {
498         int ret;
499         handle_t *handle;
500         struct buffer_head *main_bm_bh = NULL;
501         struct inode *main_bm_inode = NULL;
502         struct ocfs2_dinode *fe = NULL;
503         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
504         struct buffer_head *group_bh = NULL;
505         struct ocfs2_group_desc *group = NULL;
506         struct ocfs2_chain_list *cl;
507         struct ocfs2_chain_rec *cr;
508         u16 cl_bpc;
509
510         mlog_entry_void();
511
512         if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
513                 return -EROFS;
514
515         main_bm_inode = ocfs2_get_system_file_inode(osb,
516                                                     GLOBAL_BITMAP_SYSTEM_INODE,
517                                                     OCFS2_INVALID_SLOT);
518         if (!main_bm_inode) {
519                 ret = -EINVAL;
520                 mlog_errno(ret);
521                 goto out;
522         }
523
524         mutex_lock(&main_bm_inode->i_mutex);
525
526         ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
527         if (ret < 0) {
528                 mlog_errno(ret);
529                 goto out_mutex;
530         }
531
532         fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
533
534         if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
535                                  ocfs2_group_bitmap_size(osb->sb) * 8) {
536                 mlog(ML_ERROR, "The disk is too old and small."
537                      " Force to do offline resize.");
538                 ret = -EINVAL;
539                 goto out_unlock;
540         }
541
542         ret = ocfs2_read_blocks_sync(osb, input->group, 1, &group_bh);
543         if (ret < 0) {
544                 mlog(ML_ERROR, "Can't read the group descriptor # %llu "
545                      "from the device.", (unsigned long long)input->group);
546                 goto out_unlock;
547         }
548
549         ocfs2_set_new_buffer_uptodate(inode, group_bh);
550
551         ret = ocfs2_verify_group_and_input(main_bm_inode, fe, input, group_bh);
552         if (ret) {
553                 mlog_errno(ret);
554                 goto out_unlock;
555         }
556
557         mlog(0, "Add a new group  %llu in chain = %u, length = %u\n",
558              (unsigned long long)input->group, input->chain, input->clusters);
559
560         handle = ocfs2_start_trans(osb, OCFS2_GROUP_ADD_CREDITS);
561         if (IS_ERR(handle)) {
562                 mlog_errno(PTR_ERR(handle));
563                 ret = -EINVAL;
564                 goto out_unlock;
565         }
566
567         cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
568         cl = &fe->id2.i_chain;
569         cr = &cl->cl_recs[input->chain];
570
571         ret = ocfs2_journal_access(handle, main_bm_inode, group_bh,
572                                    OCFS2_JOURNAL_ACCESS_WRITE);
573         if (ret < 0) {
574                 mlog_errno(ret);
575                 goto out_commit;
576         }
577
578         group = (struct ocfs2_group_desc *)group_bh->b_data;
579         group->bg_next_group = cr->c_blkno;
580
581         ret = ocfs2_journal_dirty(handle, group_bh);
582         if (ret < 0) {
583                 mlog_errno(ret);
584                 goto out_commit;
585         }
586
587         ret = ocfs2_journal_access(handle, main_bm_inode, main_bm_bh,
588                                    OCFS2_JOURNAL_ACCESS_WRITE);
589         if (ret < 0) {
590                 mlog_errno(ret);
591                 goto out_commit;
592         }
593
594         if (input->chain == le16_to_cpu(cl->cl_next_free_rec)) {
595                 le16_add_cpu(&cl->cl_next_free_rec, 1);
596                 memset(cr, 0, sizeof(struct ocfs2_chain_rec));
597         }
598
599         cr->c_blkno = cpu_to_le64(input->group);
600         le32_add_cpu(&cr->c_total, input->clusters * cl_bpc);
601         le32_add_cpu(&cr->c_free, input->frees * cl_bpc);
602
603         le32_add_cpu(&fe->id1.bitmap1.i_total, input->clusters *cl_bpc);
604         le32_add_cpu(&fe->id1.bitmap1.i_used,
605                      (input->clusters - input->frees) * cl_bpc);
606         le32_add_cpu(&fe->i_clusters, input->clusters);
607
608         ocfs2_journal_dirty(handle, main_bm_bh);
609
610         spin_lock(&OCFS2_I(main_bm_inode)->ip_lock);
611         OCFS2_I(main_bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
612         le64_add_cpu(&fe->i_size, input->clusters << osb->s_clustersize_bits);
613         spin_unlock(&OCFS2_I(main_bm_inode)->ip_lock);
614         i_size_write(main_bm_inode, le64_to_cpu(fe->i_size));
615
616         ocfs2_update_super_and_backups(main_bm_inode, input->clusters);
617
618 out_commit:
619         ocfs2_commit_trans(osb, handle);
620 out_unlock:
621         brelse(group_bh);
622         brelse(main_bm_bh);
623
624         ocfs2_inode_unlock(main_bm_inode, 1);
625
626 out_mutex:
627         mutex_unlock(&main_bm_inode->i_mutex);
628         iput(main_bm_inode);
629
630 out:
631         mlog_exit_void();
632         return ret;
633 }