blob: dacd553d861769a4c3c0aab53b462b3a444fc872 [file] [log] [blame]
Tao Mad6590722007-12-18 15:47:03 +08001/* -*- 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 */
54static 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
89static 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
Joel Becker0cf2f762009-02-12 16:41:25 -0800109 ret = ocfs2_journal_access_gd(handle, INODE_CACHE(bm_inode),
110 group_bh, OCFS2_JOURNAL_ACCESS_WRITE);
Tao Mad6590722007-12-18 15:47:03 +0800111 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
Joel Beckerec20cec2010-03-19 14:13:52 -0700137 ocfs2_journal_dirty(handle, group_bh);
Tao Mad6590722007-12-18 15:47:03 +0800138
139 /* update the inode accordingly. */
Joel Becker0cf2f762009-02-12 16:41:25 -0800140 ret = ocfs2_journal_access_di(handle, INODE_CACHE(bm_inode), bm_bh,
Joel Becker13723d02008-10-17 19:25:01 -0700141 OCFS2_JOURNAL_ACCESS_WRITE);
Tao Mad6590722007-12-18 15:47:03 +0800142 if (ret < 0) {
143 mlog_errno(ret);
144 goto out_rollback;
145 }
146
147 chain = le16_to_cpu(group->bg_chain);
148 cr = (&cl->cl_recs[chain]);
149 le32_add_cpu(&cr->c_total, num_bits);
150 le32_add_cpu(&cr->c_free, num_bits);
151 le32_add_cpu(&fe->id1.bitmap1.i_total, num_bits);
152 le32_add_cpu(&fe->i_clusters, new_clusters);
153
154 if (backups) {
155 le32_add_cpu(&cr->c_free, -1 * backups);
156 le32_add_cpu(&fe->id1.bitmap1.i_used, backups);
157 }
158
159 spin_lock(&OCFS2_I(bm_inode)->ip_lock);
160 OCFS2_I(bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
161 le64_add_cpu(&fe->i_size, new_clusters << osb->s_clustersize_bits);
162 spin_unlock(&OCFS2_I(bm_inode)->ip_lock);
163 i_size_write(bm_inode, le64_to_cpu(fe->i_size));
164
165 ocfs2_journal_dirty(handle, bm_bh);
166
167out_rollback:
168 if (ret < 0) {
169 ocfs2_calc_new_backup_super(bm_inode,
170 group,
171 new_clusters,
172 first_new_cluster,
173 cl_cpg, 0);
174 le16_add_cpu(&group->bg_free_bits_count, backups);
175 le16_add_cpu(&group->bg_bits, -1 * num_bits);
176 le16_add_cpu(&group->bg_free_bits_count, -1 * num_bits);
177 }
178out:
179 mlog_exit(ret);
180 return ret;
181}
182
183static int update_backups(struct inode * inode, u32 clusters, char *data)
184{
185 int i, ret = 0;
186 u32 cluster;
187 u64 blkno;
188 struct buffer_head *backup = NULL;
189 struct ocfs2_dinode *backup_di = NULL;
190 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
191
192 /* calculate the real backups we need to update. */
193 for (i = 0; i < OCFS2_MAX_BACKUP_SUPERBLOCKS; i++) {
194 blkno = ocfs2_backup_super_blkno(inode->i_sb, i);
195 cluster = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
196 if (cluster > clusters)
197 break;
198
Joel Beckerda1e9092008-10-09 17:20:29 -0700199 ret = ocfs2_read_blocks_sync(osb, blkno, 1, &backup);
Tao Mad6590722007-12-18 15:47:03 +0800200 if (ret < 0) {
201 mlog_errno(ret);
202 break;
203 }
204
205 memcpy(backup->b_data, data, inode->i_sb->s_blocksize);
206
207 backup_di = (struct ocfs2_dinode *)backup->b_data;
208 backup_di->i_blkno = cpu_to_le64(blkno);
209
210 ret = ocfs2_write_super_or_backup(osb, backup);
211 brelse(backup);
212 backup = NULL;
213 if (ret < 0) {
214 mlog_errno(ret);
215 break;
216 }
217 }
218
219 return ret;
220}
221
222static void ocfs2_update_super_and_backups(struct inode *inode,
223 int new_clusters)
224{
225 int ret;
226 u32 clusters = 0;
227 struct buffer_head *super_bh = NULL;
228 struct ocfs2_dinode *super_di = NULL;
229 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
230
231 /*
232 * update the superblock last.
233 * It doesn't matter if the write failed.
234 */
Joel Beckerda1e9092008-10-09 17:20:29 -0700235 ret = ocfs2_read_blocks_sync(osb, OCFS2_SUPER_BLOCK_BLKNO, 1,
236 &super_bh);
Tao Mad6590722007-12-18 15:47:03 +0800237 if (ret < 0) {
238 mlog_errno(ret);
239 goto out;
240 }
241
242 super_di = (struct ocfs2_dinode *)super_bh->b_data;
243 le32_add_cpu(&super_di->i_clusters, new_clusters);
244 clusters = le32_to_cpu(super_di->i_clusters);
245
246 ret = ocfs2_write_super_or_backup(osb, super_bh);
247 if (ret < 0) {
248 mlog_errno(ret);
249 goto out;
250 }
251
252 if (OCFS2_HAS_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_COMPAT_BACKUP_SB))
253 ret = update_backups(inode, clusters, super_bh->b_data);
254
255out:
Mark Fasheh2fe5c1d2008-01-23 18:35:31 -0800256 brelse(super_bh);
Tao Mad6590722007-12-18 15:47:03 +0800257 if (ret)
258 printk(KERN_WARNING "ocfs2: Failed to update super blocks on %s"
259 " during fs resize. This condition is not fatal,"
260 " but fsck.ocfs2 should be run to fix it\n",
261 osb->dev_str);
262 return;
263}
264
265/*
266 * Extend the filesystem to the new number of clusters specified. This entry
267 * point is only used to extend the current filesystem to the end of the last
268 * existing group.
269 */
270int ocfs2_group_extend(struct inode * inode, int new_clusters)
271{
272 int ret;
273 handle_t *handle;
274 struct buffer_head *main_bm_bh = NULL;
275 struct buffer_head *group_bh = NULL;
276 struct inode *main_bm_inode = NULL;
277 struct ocfs2_dinode *fe = NULL;
278 struct ocfs2_group_desc *group = NULL;
279 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
280 u16 cl_bpc;
281 u32 first_new_cluster;
282 u64 lgd_blkno;
283
284 mlog_entry_void();
285
286 if (ocfs2_is_hard_readonly(osb) || ocfs2_is_soft_readonly(osb))
287 return -EROFS;
288
289 if (new_clusters < 0)
290 return -EINVAL;
291 else if (new_clusters == 0)
292 return 0;
293
294 main_bm_inode = ocfs2_get_system_file_inode(osb,
295 GLOBAL_BITMAP_SYSTEM_INODE,
296 OCFS2_INVALID_SLOT);
297 if (!main_bm_inode) {
298 ret = -EINVAL;
299 mlog_errno(ret);
300 goto out;
301 }
302
303 mutex_lock(&main_bm_inode->i_mutex);
304
305 ret = ocfs2_inode_lock(main_bm_inode, &main_bm_bh, 1);
306 if (ret < 0) {
307 mlog_errno(ret);
308 goto out_mutex;
309 }
310
311 fe = (struct ocfs2_dinode *)main_bm_bh->b_data;
312
Joel Becker10995aa2008-11-13 14:49:12 -0800313 /* main_bm_bh is validated by inode read inside ocfs2_inode_lock(),
314 * so any corruption is a code bug. */
315 BUG_ON(!OCFS2_IS_VALID_DINODE(fe));
316
Tao Mad6590722007-12-18 15:47:03 +0800317 if (le16_to_cpu(fe->id2.i_chain.cl_cpg) !=
Tao Ma85718822010-04-13 14:38:06 +0800318 ocfs2_group_bitmap_size(osb->sb, 0,
319 osb->s_feature_incompat) * 8) {
Tao Mad6590722007-12-18 15:47:03 +0800320 mlog(ML_ERROR, "The disk is too old and small. "
321 "Force to do offline resize.");
322 ret = -EINVAL;
323 goto out_unlock;
324 }
325
Tao Mad6590722007-12-18 15:47:03 +0800326 first_new_cluster = le32_to_cpu(fe->i_clusters);
327 lgd_blkno = ocfs2_which_cluster_group(main_bm_inode,
328 first_new_cluster - 1);
329
Joel Becker68f64d42008-11-13 14:49:14 -0800330 ret = ocfs2_read_group_descriptor(main_bm_inode, fe, lgd_blkno,
331 &group_bh);
Tao Mad6590722007-12-18 15:47:03 +0800332 if (ret < 0) {
333 mlog_errno(ret);
334 goto out_unlock;
335 }
Tao Mad6590722007-12-18 15:47:03 +0800336 group = (struct ocfs2_group_desc *)group_bh->b_data;
337
Tao Mad6590722007-12-18 15:47:03 +0800338 cl_bpc = le16_to_cpu(fe->id2.i_chain.cl_bpc);
339 if (le16_to_cpu(group->bg_bits) / cl_bpc + new_clusters >
340 le16_to_cpu(fe->id2.i_chain.cl_cpg)) {
341 ret = -EINVAL;
342 goto out_unlock;
343 }
344
345 mlog(0, "extend the last group at %llu, new clusters = %d\n",
Tao Ma7909f2b2007-12-18 15:47:25 +0800346 (unsigned long long)le64_to_cpu(group->bg_blkno), new_clusters);
Tao Mad6590722007-12-18 15:47:03 +0800347
348 handle = ocfs2_start_trans(osb, OCFS2_GROUP_EXTEND_CREDITS);
349 if (IS_ERR(handle)) {
350 mlog_errno(PTR_ERR(handle));
351 ret = -EINVAL;
352 goto out_unlock;
353 }
354
355 /* update the last group descriptor and inode. */
356 ret = ocfs2_update_last_group_and_inode(handle, main_bm_inode,
357 main_bm_bh, group_bh,
358 first_new_cluster,
359 new_clusters);
360 if (ret) {
361 mlog_errno(ret);
362 goto out_commit;
363 }
364
365 ocfs2_update_super_and_backups(main_bm_inode, new_clusters);
366
367out_commit:
368 ocfs2_commit_trans(osb, handle);
369out_unlock:
Mark Fasheh2fe5c1d2008-01-23 18:35:31 -0800370 brelse(group_bh);
371 brelse(main_bm_bh);
Tao Mad6590722007-12-18 15:47:03 +0800372
373 ocfs2_inode_unlock(main_bm_inode, 1);
374
375out_mutex:
376 mutex_unlock(&main_bm_inode->i_mutex);
377 iput(main_bm_inode);
378
379out:
380 mlog_exit_void();
381 return ret;
382}
Tao Ma7909f2b2007-12-18 15:47:25 +0800383
384static int ocfs2_check_new_group(struct inode *inode,
385 struct ocfs2_dinode *di,
386 struct ocfs2_new_group_input *input,
387 struct buffer_head *group_bh)
388{
389 int ret;
Joel Becker57e3e792008-11-13 14:49:13 -0800390 struct ocfs2_group_desc *gd =
391 (struct ocfs2_group_desc *)group_bh->b_data;
Tao Ma7909f2b2007-12-18 15:47:25 +0800392 u16 cl_bpc = le16_to_cpu(di->id2.i_chain.cl_bpc);
Tao Ma7909f2b2007-12-18 15:47:25 +0800393
Joel Becker970e4932008-11-13 14:49:19 -0800394 ret = ocfs2_check_group_descriptor(inode->i_sb, di, group_bh);
Joel Becker57e3e792008-11-13 14:49:13 -0800395 if (ret)
396 goto out;
Tao Ma7909f2b2007-12-18 15:47:25 +0800397
Joel Becker57e3e792008-11-13 14:49:13 -0800398 ret = -EINVAL;
399 if (le16_to_cpu(gd->bg_chain) != input->chain)
Tao Ma7909f2b2007-12-18 15:47:25 +0800400 mlog(ML_ERROR, "Group descriptor # %llu has bad chain %u "
401 "while input has %u set.\n",
402 (unsigned long long)le64_to_cpu(gd->bg_blkno),
403 le16_to_cpu(gd->bg_chain), input->chain);
404 else if (le16_to_cpu(gd->bg_bits) != input->clusters * cl_bpc)
405 mlog(ML_ERROR, "Group descriptor # %llu has bit count %u but "
406 "input has %u clusters set\n",
407 (unsigned long long)le64_to_cpu(gd->bg_blkno),
408 le16_to_cpu(gd->bg_bits), input->clusters);
409 else if (le16_to_cpu(gd->bg_free_bits_count) != input->frees * cl_bpc)
410 mlog(ML_ERROR, "Group descriptor # %llu has free bit count %u "
411 "but it should have %u set\n",
412 (unsigned long long)le64_to_cpu(gd->bg_blkno),
413 le16_to_cpu(gd->bg_bits),
414 input->frees * cl_bpc);
415 else
416 ret = 0;
417
Joel Becker57e3e792008-11-13 14:49:13 -0800418out:
Tao Ma7909f2b2007-12-18 15:47:25 +0800419 return ret;
420}
421
422static int ocfs2_verify_group_and_input(struct inode *inode,
423 struct ocfs2_dinode *di,
424 struct ocfs2_new_group_input *input,
425 struct buffer_head *group_bh)
426{
427 u16 cl_count = le16_to_cpu(di->id2.i_chain.cl_count);
428 u16 cl_cpg = le16_to_cpu(di->id2.i_chain.cl_cpg);
429 u16 next_free = le16_to_cpu(di->id2.i_chain.cl_next_free_rec);
430 u32 cluster = ocfs2_blocks_to_clusters(inode->i_sb, input->group);
431 u32 total_clusters = le32_to_cpu(di->i_clusters);
432 int ret = -EINVAL;
433
434 if (cluster < total_clusters)
435 mlog(ML_ERROR, "add a group which is in the current volume.\n");
436 else if (input->chain >= cl_count)
437 mlog(ML_ERROR, "input chain exceeds the limit.\n");
438 else if (next_free != cl_count && next_free != input->chain)
439 mlog(ML_ERROR,
440 "the add group should be in chain %u\n", next_free);
441 else if (total_clusters + input->clusters < total_clusters)
442 mlog(ML_ERROR, "add group's clusters overflow.\n");
443 else if (input->clusters > cl_cpg)
444 mlog(ML_ERROR, "the cluster exceeds the maximum of a group\n");
445 else if (input->frees > input->clusters)
446 mlog(ML_ERROR, "the free cluster exceeds the total clusters\n");
447 else if (total_clusters % cl_cpg != 0)
448 mlog(ML_ERROR,
449 "the last group isn't full. Use group extend first.\n");
450 else if (input->group != ocfs2_which_cluster_group(inode, cluster))
451 mlog(ML_ERROR, "group blkno is invalid\n");
452 else if ((ret = ocfs2_check_new_group(inode, di, input, group_bh)))
453 mlog(ML_ERROR, "group descriptor check failed.\n");
454 else
455 ret = 0;
456
457 return ret;
458}
459
460/* Add a new group descriptor to global_bitmap. */
461int ocfs2_group_add(struct inode *inode, struct ocfs2_new_group_input *input)
462{
463 int ret;
464 handle_t *handle;
465 struct buffer_head *main_bm_bh = NULL;
466 struct inode *main_bm_inode = NULL;
467 struct ocfs2_dinode *fe = NULL;
468 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
469 struct buffer_head *group_bh = NULL;
470 struct ocfs2_group_desc *group = NULL;
471 struct ocfs2_chain_list *cl;
472 struct ocfs2_chain_rec *cr;
473 u16 cl_bpc;
474
475 mlog_entry_void();
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 mutex_lock(&main_bm_inode->i_mutex);
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) !=
Tao Ma85718822010-04-13 14:38:06 +0800500 ocfs2_group_bitmap_size(osb->sb, 0,
501 osb->s_feature_incompat) * 8) {
Tao Ma7909f2b2007-12-18 15:47:25 +0800502 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
Joel Beckerda1e9092008-10-09 17:20:29 -0700508 ret = ocfs2_read_blocks_sync(osb, input->group, 1, &group_bh);
Tao Ma7909f2b2007-12-18 15:47:25 +0800509 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
Joel Becker8cb471e2009-02-10 20:00:41 -0800515 ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), group_bh);
Tao Ma7909f2b2007-12-18 15:47:25 +0800516
517 ret = ocfs2_verify_group_and_input(main_bm_inode, fe, input, group_bh);
518 if (ret) {
519 mlog_errno(ret);
520 goto out_unlock;
521 }
522
523 mlog(0, "Add a new group %llu in chain = %u, length = %u\n",
524 (unsigned long long)input->group, input->chain, input->clusters);
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_unlock;
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
Joel Becker0cf2f762009-02-12 16:41:25 -0800537 ret = ocfs2_journal_access_gd(handle, INODE_CACHE(main_bm_inode),
538 group_bh, OCFS2_JOURNAL_ACCESS_WRITE);
Tao Ma7909f2b2007-12-18 15:47:25 +0800539 if (ret < 0) {
540 mlog_errno(ret);
541 goto out_commit;
542 }
543
544 group = (struct ocfs2_group_desc *)group_bh->b_data;
545 group->bg_next_group = cr->c_blkno;
Joel Beckerec20cec2010-03-19 14:13:52 -0700546 ocfs2_journal_dirty(handle, group_bh);
Tao Ma7909f2b2007-12-18 15:47:25 +0800547
Joel Becker0cf2f762009-02-12 16:41:25 -0800548 ret = ocfs2_journal_access_di(handle, INODE_CACHE(main_bm_inode),
549 main_bm_bh, OCFS2_JOURNAL_ACCESS_WRITE);
Tao Ma7909f2b2007-12-18 15:47:25 +0800550 if (ret < 0) {
551 mlog_errno(ret);
552 goto out_commit;
553 }
554
555 if (input->chain == le16_to_cpu(cl->cl_next_free_rec)) {
556 le16_add_cpu(&cl->cl_next_free_rec, 1);
557 memset(cr, 0, sizeof(struct ocfs2_chain_rec));
558 }
559
Tao Ma4338ab62008-03-03 10:53:02 +0800560 cr->c_blkno = cpu_to_le64(input->group);
Tao Ma7909f2b2007-12-18 15:47:25 +0800561 le32_add_cpu(&cr->c_total, input->clusters * cl_bpc);
562 le32_add_cpu(&cr->c_free, input->frees * cl_bpc);
563
564 le32_add_cpu(&fe->id1.bitmap1.i_total, input->clusters *cl_bpc);
565 le32_add_cpu(&fe->id1.bitmap1.i_used,
566 (input->clusters - input->frees) * cl_bpc);
567 le32_add_cpu(&fe->i_clusters, input->clusters);
568
569 ocfs2_journal_dirty(handle, main_bm_bh);
570
571 spin_lock(&OCFS2_I(main_bm_inode)->ip_lock);
572 OCFS2_I(main_bm_inode)->ip_clusters = le32_to_cpu(fe->i_clusters);
573 le64_add_cpu(&fe->i_size, input->clusters << osb->s_clustersize_bits);
574 spin_unlock(&OCFS2_I(main_bm_inode)->ip_lock);
575 i_size_write(main_bm_inode, le64_to_cpu(fe->i_size));
576
577 ocfs2_update_super_and_backups(main_bm_inode, input->clusters);
578
579out_commit:
580 ocfs2_commit_trans(osb, handle);
581out_unlock:
Mark Fasheh2fe5c1d2008-01-23 18:35:31 -0800582 brelse(group_bh);
583 brelse(main_bm_bh);
Tao Ma7909f2b2007-12-18 15:47:25 +0800584
585 ocfs2_inode_unlock(main_bm_inode, 1);
586
587out_mutex:
588 mutex_unlock(&main_bm_inode->i_mutex);
589 iput(main_bm_inode);
590
591out:
592 mlog_exit_void();
593 return ret;
594}