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TOMOYO Linux Cross Reference
Linux/fs/ocfs2/resize.c

Version: ~ [ linux-5.4-rc3 ] ~ [ linux-5.3.6 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.79 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.149 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.196 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.196 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.75 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  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 #include <cluster/masklog.h>
 31 
 32 #include "ocfs2.h"
 33 
 34 #include "alloc.h"
 35 #include "dlmglue.h"
 36 #include "inode.h"
 37 #include "journal.h"
 38 #include "super.h"
 39 #include "sysfile.h"
 40 #include "uptodate.h"
 41 #include "ocfs2_trace.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                                        u16 cl_cpg,
 57                                        u16 old_bg_clusters,
 58                                        int set)
 59 {
 60         int i;
 61         u16 backups = 0;
 62         u32 cluster, lgd_cluster;
 63         u64 blkno, gd_blkno, lgd_blkno = le64_to_cpu(gd->bg_blkno);
 64 
 65         for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
 66                 blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
 67                 cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
 68 
 69                 gd_blkno = ocfs2_which_cluster_group(inode, cluster);
 70                 if (gd_blkno < lgd_blkno)
 71                         continue;
 72                 else if (gd_blkno > lgd_blkno)
 73                         break;
 74 
 75                 /* check if already done backup super */
 76                 lgd_cluster = ocfs2_blocks_to_clusters(inode->i_sb, lgd_blkno);
 77                 lgd_cluster += old_bg_clusters;
 78                 if (lgd_cluster >= cluster)
 79                         continue;
 80 
 81                 if (set)
 82                         ocfs2_set_bit(cluster % cl_cpg,
 83                                       (unsigned long *)gd->bg_bitmap);
 84                 else
 85                         ocfs2_clear_bit(cluster % cl_cpg,
 86                                         (unsigned long *)gd->bg_bitmap);
 87                 backups++;
 88         }
 89 
 90         return backups;
 91 }
 92 
 93 static int ocfs2_update_last_group_and_inode(handle_t *handle,
 94                                              struct inode *bm_inode,
 95                                              struct buffer_head *bm_bh,
 96                                              struct buffer_head *group_bh,
 97                                              u32 first_new_cluster,
 98                                              int new_clusters)
 99 {
100         int ret = 0;
101         struct ocfs2_super *osb = OCFS2_SB(bm_inode->i_sb);
102         struct ocfs2_dinode *fe = (struct ocfs2_dinode *) bm_bh->b_data;
103         struct ocfs2_chain_list *cl = &fe->id2.i_chain;
104         struct ocfs2_chain_rec *cr;
105         struct ocfs2_group_desc *group;
106         u16 chain, num_bits, backups = 0;
107         u16 cl_bpc = le16_to_cpu(cl->cl_bpc);
108         u16 cl_cpg = le16_to_cpu(cl->cl_cpg);
109         u16 old_bg_clusters;
110 
111         trace_ocfs2_update_last_group_and_inode(new_clusters,
112                                                 first_new_cluster);
113 
114         ret = ocfs2_journal_access_gd(handle, INODE_CACHE(bm_inode),
115                                       group_bh, OCFS2_JOURNAL_ACCESS_WRITE);
116         if (ret < 0) {
117                 mlog_errno(ret);
118                 goto out;
119         }
120 
121         group = (struct ocfs2_group_desc *)group_bh->b_data;
122 
123         old_bg_clusters = le16_to_cpu(group->bg_bits) / cl_bpc;
124         /* update the group first. */
125         num_bits = new_clusters * cl_bpc;
126         le16_add_cpu(&group->bg_bits, num_bits);
127         le16_add_cpu(&group->bg_free_bits_count, num_bits);
128 
129         /*
130          * check whether there are some new backup superblocks exist in
131          * this group and update the group bitmap accordingly.
132          */
133         if (OCFS2_HAS_COMPAT_FEATURE(osb->sb,
134                                      OCFS2_FEATURE_COMPAT_BACKUP_SB)) {
135                 backups = ocfs2_calc_new_backup_super(bm_inode,
136                                                      group,
137                                                      cl_cpg, old_bg_clusters, 1);
138                 le16_add_cpu(&group->bg_free_bits_count, -1 * backups);
139         }
140 
141         ocfs2_journal_dirty(handle, group_bh);
142 
143         /* update the inode accordingly. */
144         ret = ocfs2_journal_access_di(handle, INODE_CACHE(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, (u64)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                                             cl_cpg, old_bg_clusters, 0);
176                 le16_add_cpu(&group->bg_free_bits_count, backups);
177                 le16_add_cpu(&group->bg_bits, -1 * num_bits);
178                 le16_add_cpu(&group->bg_free_bits_count, -1 * num_bits);
179         }
180 out:
181         if (ret)
182                 mlog_errno(ret);
183         return ret;
184 }
185 
186 static int update_backups(struct inode * inode, u32 clusters, char *data)
187 {
188         int i, ret = 0;
189         u32 cluster;
190         u64 blkno;
191         struct buffer_head *backup = NULL;
192         struct ocfs2_dinode *backup_di = NULL;
193         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
194 
195         /* calculate the real backups we need to update. */
196         for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
197                 blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
198                 cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
199                 if (cluster >= clusters)
200                         break;
201 
202                 ret = ocfs2_read_blocks_sync(osb, blkno, 1, &backup);
203                 if (ret < 0) {
204                         mlog_errno(ret);
205                         break;
206                 }
207 
208                 memcpy(backup->b_data, data, inode->i_sb->s_blocksize);
209 
210                 backup_di = (struct ocfs2_dinode *)backup->b_data;
211                 backup_di->i_blkno = cpu_to_le64(blkno);
212 
213                 ret = ocfs2_write_super_or_backup(osb, backup);
214                 brelse(backup);
215                 backup = NULL;
216                 if (ret < 0) {
217                         mlog_errno(ret);
218                         break;
219                 }
220         }
221 
222         return ret;
223 }
224 
225 static void ocfs2_update_super_and_backups(struct inode *inode,
226                                            int new_clusters)
227 {
228         int ret;
229         u32 clusters = 0;
230         struct buffer_head *super_bh = NULL;
231         struct ocfs2_dinode *super_di = NULL;
232         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
233 
234         /*
235          * update the superblock last.
236          * It doesn't matter if the write failed.
237          */
238         ret = ocfs2_read_blocks_sync(osb, OCFS2_SUPER_BLOCK_BLKNO, 1,
239                                      &super_bh);
240         if (ret < 0) {
241                 mlog_errno(ret);
242                 goto out;
243         }
244 
245         super_di = (struct ocfs2_dinode *)super_bh->b_data;
246         le32_add_cpu(&super_di->i_clusters, new_clusters);
247         clusters = le32_to_cpu(super_di->i_clusters);
248 
249         ret = ocfs2_write_super_or_backup(osb, super_bh);
250         if (ret < 0) {
251                 mlog_errno(ret);
252                 goto out;
253         }
254 
255         if (OCFS2_HAS_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_COMPAT_BACKUP_SB))
256                 ret = update_backups(inode, clusters, super_bh->b_data);
257 
258 out:
259         brelse(super_bh);
260         if (ret)
261                 printk(KERN_WARNING "ocfs2: Failed to update super blocks on %s"
262                         " during fs resize. This condition is not fatal,"
263                         " but fsck.ocfs2 should be run to fix it\n",
264                         osb->dev_str);
265         return;
266 }
267 
268 /*
269  * Extend the filesystem to the new number of clusters specified.  This entry
270  * point is only used to extend the current filesystem to the end of the last
271  * existing group.
272  */
273 int ocfs2_group_extend(struct inode * inode, int new_clusters)
274 {
275         int ret;
276         handle_t *handle;
277         struct buffer_head *main_bm_bh = NULL;
278         struct buffer_head *group_bh = NULL;
279         struct inode *main_bm_inode = NULL;
280         struct ocfs2_dinode *fe = NULL;
281         struct ocfs2_group_desc *group = NULL;
282         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
283         u16 cl_bpc;
284         u32 first_new_cluster;
285         u64 lgd_blkno;
286 
287         if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
288                 return -EROFS;
289 
290         if (new_clusters < 0)
291                 return -EINVAL;
292         else if (new_clusters == 0)
293                 return 0;
294 
295         main_bm_inode = ocfs2_get_system_file_inode(osb,
296                                                     GLOBAL_BITMAP_SYSTEM_INODE,
297                                                     OCFS2_INVALID_SLOT);
298         if (!main_bm_inode) {
299                 ret = -EINVAL;
300                 mlog_errno(ret);
301                 goto out;
302         }
303 
304         inode_lock(main_bm_inode);
305 
306         ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
307         if (ret < 0) {
308                 mlog_errno(ret);
309                 goto out_mutex;
310         }
311 
312         fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
313 
314         /* main_bm_bh is validated by inode read inside ocfs2_inode_lock(),
315          * so any corruption is a code bug. */
316         BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
317 
318         if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
319                 ocfs2_group_bitmap_size(osb->sb, 0,
320                                         osb->s_feature_incompat) * 8) {
321                 mlog(ML_ERROR, "The disk is too old and small. "
322                      "Force to do offline resize.");
323                 ret = -EINVAL;
324                 goto out_unlock;
325         }
326 
327         first_new_cluster = le32_to_cpu(fe->i_clusters);
328         lgd_blkno = ocfs2_which_cluster_group(main_bm_inode,
329                                               first_new_cluster - 1);
330 
331         ret = ocfs2_read_group_descriptor(main_bm_inode, fe, lgd_blkno,
332                                           &group_bh);
333         if (ret < 0) {
334                 mlog_errno(ret);
335                 goto out_unlock;
336         }
337         group = (struct ocfs2_group_desc *)group_bh->b_data;
338 
339         cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
340         if (le16_to_cpu(group->bg_bits) / cl_bpc + new_clusters >
341                 le16_to_cpu(fe->id2.i_chain.cl_cpg)) {
342                 ret = -EINVAL;
343                 goto out_unlock;
344         }
345 
346 
347         trace_ocfs2_group_extend(
348              (unsigned long long)le64_to_cpu(group->bg_blkno), new_clusters);
349 
350         handle = ocfs2_start_trans(osb, OCFS2_GROUP_EXTEND_CREDITS);
351         if (IS_ERR(handle)) {
352                 mlog_errno(PTR_ERR(handle));
353                 ret = -EINVAL;
354                 goto out_unlock;
355         }
356 
357         /* update the last group descriptor and inode. */
358         ret = ocfs2_update_last_group_and_inode(handle, main_bm_inode,
359                                                 main_bm_bh, group_bh,
360                                                 first_new_cluster,
361                                                 new_clusters);
362         if (ret) {
363                 mlog_errno(ret);
364                 goto out_commit;
365         }
366 
367         ocfs2_update_super_and_backups(main_bm_inode, new_clusters);
368 
369 out_commit:
370         ocfs2_commit_trans(osb, handle);
371 out_unlock:
372         brelse(group_bh);
373         brelse(main_bm_bh);
374 
375         ocfs2_inode_unlock(main_bm_inode, 1);
376 
377 out_mutex:
378         inode_unlock(main_bm_inode);
379         iput(main_bm_inode);
380 
381 out:
382         return ret;
383 }
384 
385 static int ocfs2_check_new_group(struct inode *inode,
386                                  struct ocfs2_dinode *di,
387                                  struct ocfs2_new_group_input *input,
388                                  struct buffer_head *group_bh)
389 {
390         int ret;
391         struct ocfs2_group_desc *gd =
392                 (struct ocfs2_group_desc *)group_bh->b_data;
393         u16 cl_bpc = le16_to_cpu(di->id2.i_chain.cl_bpc);
394 
395         ret = ocfs2_check_group_descriptor(inode->i_sb, di, group_bh);
396         if (ret)
397                 goto out;
398 
399         ret = -EINVAL;
400         if (le16_to_cpu(gd->bg_chain) != input->chain)
401                 mlog(ML_ERROR, "Group descriptor # %llu has bad chain %u "
402                      "while input has %u set.\n",
403                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
404                      le16_to_cpu(gd->bg_chain), input->chain);
405         else if (le16_to_cpu(gd->bg_bits) != input->clusters * cl_bpc)
406                 mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
407                      "input has %u clusters set\n",
408                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
409                      le16_to_cpu(gd->bg_bits), input->clusters);
410         else if (le16_to_cpu(gd->bg_free_bits_count) != input->frees * cl_bpc)
411                 mlog(ML_ERROR, "Group descriptor # %llu has free bit count %u "
412                      "but it should have %u set\n",
413                      (unsigned long long)le64_to_cpu(gd->bg_blkno),
414                      le16_to_cpu(gd->bg_bits),
415                      input->frees * cl_bpc);
416         else
417                 ret = 0;
418 
419 out:
420         return ret;
421 }
422 
423 static int ocfs2_verify_group_and_input(struct inode *inode,
424                                         struct ocfs2_dinode *di,
425                                         struct ocfs2_new_group_input *input,
426                                         struct buffer_head *group_bh)
427 {
428         u16 cl_count = le16_to_cpu(di->id2.i_chain.cl_count);
429         u16 cl_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg);
430         u16 next_free = le16_to_cpu(di->id2.i_chain.cl_next_free_rec);
431         u32 cluster = ocfs2_blocks_to_clusters(inode->i_sb, input->group);
432         u32 total_clusters = le32_to_cpu(di->i_clusters);
433         int ret = -EINVAL;
434 
435         if (cluster < total_clusters)
436                 mlog(ML_ERROR, "add a group which is in the current volume.\n");
437         else if (input->chain >= cl_count)
438                 mlog(ML_ERROR, "input chain exceeds the limit.\n");
439         else if (next_free != cl_count && next_free != input->chain)
440                 mlog(ML_ERROR,
441                      "the add group should be in chain %u\n", next_free);
442         else if (total_clusters + input->clusters < total_clusters)
443                 mlog(ML_ERROR, "add group's clusters overflow.\n");
444         else if (input->clusters > cl_cpg)
445                 mlog(ML_ERROR, "the cluster exceeds the maximum of a group\n");
446         else if (input->frees > input->clusters)
447                 mlog(ML_ERROR, "the free cluster exceeds the total clusters\n");
448         else if (total_clusters % cl_cpg != 0)
449                 mlog(ML_ERROR,
450                      "the last group isn't full. Use group extend first.\n");
451         else if (input->group != ocfs2_which_cluster_group(inode, cluster))
452                 mlog(ML_ERROR, "group blkno is invalid\n");
453         else if ((ret = ocfs2_check_new_group(inode, di, input, group_bh)))
454                 mlog(ML_ERROR, "group descriptor check failed.\n");
455         else
456                 ret = 0;
457 
458         return ret;
459 }
460 
461 /* Add a new group descriptor to global_bitmap. */
462 int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
463 {
464         int ret;
465         handle_t *handle;
466         struct buffer_head *main_bm_bh = NULL;
467         struct inode *main_bm_inode = NULL;
468         struct ocfs2_dinode *fe = NULL;
469         struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
470         struct buffer_head *group_bh = NULL;
471         struct ocfs2_group_desc *group = NULL;
472         struct ocfs2_chain_list *cl;
473         struct ocfs2_chain_rec *cr;
474         u16 cl_bpc;
475         u64 bg_ptr;
476 
477         if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
478                 return -EROFS;
479 
480         main_bm_inode = ocfs2_get_system_file_inode(osb,
481                                                     GLOBAL_BITMAP_SYSTEM_INODE,
482                                                     OCFS2_INVALID_SLOT);
483         if (!main_bm_inode) {
484                 ret = -EINVAL;
485                 mlog_errno(ret);
486                 goto out;
487         }
488 
489         inode_lock(main_bm_inode);
490 
491         ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
492         if (ret < 0) {
493                 mlog_errno(ret);
494                 goto out_mutex;
495         }
496 
497         fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
498 
499         if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
500                 ocfs2_group_bitmap_size(osb->sb, 0,
501                                         osb->s_feature_incompat) * 8) {
502                 mlog(ML_ERROR, "The disk is too old and small."
503                      " Force to do offline resize.");
504                 ret = -EINVAL;
505                 goto out_unlock;
506         }
507 
508         ret = ocfs2_read_blocks_sync(osb, input->group, 1, &group_bh);
509         if (ret < 0) {
510                 mlog(ML_ERROR, "Can't read the group descriptor # %llu "
511                      "from the device.", (unsigned long long)input->group);
512                 goto out_unlock;
513         }
514 
515         ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), group_bh);
516 
517         ret = ocfs2_verify_group_and_input(main_bm_inode, fe, input, group_bh);
518         if (ret) {
519                 mlog_errno(ret);
520                 goto out_free_group_bh;
521         }
522 
523         trace_ocfs2_group_add((unsigned long long)input->group,
524                                input->chain, input->clusters, input->frees);
525 
526         handle = ocfs2_start_trans(osb, OCFS2_GROUP_ADD_CREDITS);
527         if (IS_ERR(handle)) {
528                 mlog_errno(PTR_ERR(handle));
529                 ret = -EINVAL;
530                 goto out_free_group_bh;
531         }
532 
533         cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
534         cl = &fe->id2.i_chain;
535         cr = &cl->cl_recs[input->chain];
536 
537         ret = ocfs2_journal_access_gd(handle, INODE_CACHE(main_bm_inode),
538                                       group_bh, OCFS2_JOURNAL_ACCESS_WRITE);
539         if (ret < 0) {
540                 mlog_errno(ret);
541                 goto out_commit;
542         }
543 
544         group = (struct ocfs2_group_desc *)group_bh->b_data;
545         bg_ptr = le64_to_cpu(group->bg_next_group);
546         group->bg_next_group = cr->c_blkno;
547         ocfs2_journal_dirty(handle, group_bh);
548 
549         ret = ocfs2_journal_access_di(handle, INODE_CACHE(main_bm_inode),
550                                       main_bm_bh, OCFS2_JOURNAL_ACCESS_WRITE);
551         if (ret < 0) {
552                 group->bg_next_group = cpu_to_le64(bg_ptr);
553                 mlog_errno(ret);
554                 goto out_commit;
555         }
556 
557         if (input->chain == le16_to_cpu(cl->cl_next_free_rec)) {
558                 le16_add_cpu(&cl->cl_next_free_rec, 1);
559                 memset(cr, 0, sizeof(struct ocfs2_chain_rec));
560         }
561 
562         cr->c_blkno = cpu_to_le64(input->group);
563         le32_add_cpu(&cr->c_total, input->clusters * cl_bpc);
564         le32_add_cpu(&cr->c_free, input->frees * cl_bpc);
565 
566         le32_add_cpu(&fe->id1.bitmap1.i_total, input->clusters *cl_bpc);
567         le32_add_cpu(&fe->id1.bitmap1.i_used,
568                      (input->clusters - input->frees) * cl_bpc);
569         le32_add_cpu(&fe->i_clusters, input->clusters);
570 
571         ocfs2_journal_dirty(handle, main_bm_bh);
572 
573         spin_lock(&OCFS2_I(main_bm_inode)->ip_lock);
574         OCFS2_I(main_bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
575         le64_add_cpu(&fe->i_size, (u64)input->clusters << osb->s_clustersize_bits);
576         spin_unlock(&OCFS2_I(main_bm_inode)->ip_lock);
577         i_size_write(main_bm_inode, le64_to_cpu(fe->i_size));
578 
579         ocfs2_update_super_and_backups(main_bm_inode, input->clusters);
580 
581 out_commit:
582         ocfs2_commit_trans(osb, handle);
583 
584 out_free_group_bh:
585         brelse(group_bh);
586 
587 out_unlock:
588         brelse(main_bm_bh);
589 
590         ocfs2_inode_unlock(main_bm_inode, 1);
591 
592 out_mutex:
593         inode_unlock(main_bm_inode);
594         iput(main_bm_inode);
595 
596 out:
597         return ret;
598 }
599 

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