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 } 634