1 /* 2 * Copyright (C) International Business Machines Corp., 2000-2004 3 * Portions Copyright (C) Christoph Hellwig, 2001-2002 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License as published by 7 * the Free Software Foundation; either version 2 of the License, or 8 * (at your option) any later version. 9 * 10 * This program is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 13 * the GNU General Public License for more details. 14 * 15 * You should have received a copy of the GNU General Public License 16 * along with this program; if not, write to the Free Software 17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 18 */ 19 20 #include <linux/fs.h> 21 #include <linux/config.h> 22 #include <linux/module.h> 23 #include <linux/parser.h> 24 #include <linux/completion.h> 25 #include <linux/vfs.h> 26 #include <linux/moduleparam.h> 27 #include <linux/posix_acl.h> 28 #include <asm/uaccess.h> 29 30 #include "jfs_incore.h" 31 #include "jfs_filsys.h" 32 #include "jfs_inode.h" 33 #include "jfs_metapage.h" 34 #include "jfs_superblock.h" 35 #include "jfs_dmap.h" 36 #include "jfs_imap.h" 37 #include "jfs_acl.h" 38 #include "jfs_debug.h" 39 40 MODULE_DESCRIPTION("The Journaled Filesystem (JFS)"); 41 MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM"); 42 MODULE_LICENSE("GPL"); 43 44 static kmem_cache_t * jfs_inode_cachep; 45 46 static struct super_operations jfs_super_operations; 47 static struct export_operations jfs_export_operations; 48 static struct file_system_type jfs_fs_type; 49 50 #define MAX_COMMIT_THREADS 64 51 static int commit_threads = 0; 52 module_param(commit_threads, int, 0); 53 MODULE_PARM_DESC(commit_threads, "Number of commit threads"); 54 55 int jfs_stop_threads; 56 static pid_t jfsIOthread; 57 static pid_t jfsCommitThread[MAX_COMMIT_THREADS]; 58 static pid_t jfsSyncThread; 59 DECLARE_COMPLETION(jfsIOwait); 60 61 #ifdef CONFIG_JFS_DEBUG 62 int jfsloglevel = JFS_LOGLEVEL_WARN; 63 module_param(jfsloglevel, int, 0644); 64 MODULE_PARM_DESC(jfsloglevel, "Specify JFS loglevel (0, 1 or 2)"); 65 #endif 66 67 static void jfs_handle_error(struct super_block *sb) 68 { 69 struct jfs_sb_info *sbi = JFS_SBI(sb); 70 71 if (sb->s_flags & MS_RDONLY) 72 return; 73 74 updateSuper(sb, FM_DIRTY); 75 76 if (sbi->flag & JFS_ERR_PANIC) 77 panic("JFS (device %s): panic forced after error\n", 78 sb->s_id); 79 else if (sbi->flag & JFS_ERR_REMOUNT_RO) { 80 jfs_err("ERROR: (device %s): remounting filesystem " 81 "as read-only\n", 82 sb->s_id); 83 sb->s_flags |= MS_RDONLY; 84 } 85 86 /* nothing is done for continue beyond marking the superblock dirty */ 87 } 88 89 void jfs_error(struct super_block *sb, const char * function, ...) 90 { 91 static char error_buf[256]; 92 va_list args; 93 94 va_start(args, function); 95 vsprintf(error_buf, function, args); 96 va_end(args); 97 98 printk(KERN_ERR "ERROR: (device %s): %s\n", sb->s_id, error_buf); 99 100 jfs_handle_error(sb); 101 } 102 103 static struct inode *jfs_alloc_inode(struct super_block *sb) 104 { 105 struct jfs_inode_info *jfs_inode; 106 107 jfs_inode = kmem_cache_alloc(jfs_inode_cachep, GFP_NOFS); 108 if (!jfs_inode) 109 return NULL; 110 return &jfs_inode->vfs_inode; 111 } 112 113 static void jfs_destroy_inode(struct inode *inode) 114 { 115 struct jfs_inode_info *ji = JFS_IP(inode); 116 117 BUG_ON(!list_empty(&ji->anon_inode_list)); 118 119 spin_lock_irq(&ji->ag_lock); 120 if (ji->active_ag != -1) { 121 struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap; 122 atomic_dec(&bmap->db_active[ji->active_ag]); 123 ji->active_ag = -1; 124 } 125 spin_unlock_irq(&ji->ag_lock); 126 127 #ifdef CONFIG_JFS_POSIX_ACL 128 if (ji->i_acl != JFS_ACL_NOT_CACHED) { 129 posix_acl_release(ji->i_acl); 130 ji->i_acl = JFS_ACL_NOT_CACHED; 131 } 132 if (ji->i_default_acl != JFS_ACL_NOT_CACHED) { 133 posix_acl_release(ji->i_default_acl); 134 ji->i_default_acl = JFS_ACL_NOT_CACHED; 135 } 136 #endif 137 138 kmem_cache_free(jfs_inode_cachep, ji); 139 } 140 141 static int jfs_statfs(struct super_block *sb, struct kstatfs *buf) 142 { 143 struct jfs_sb_info *sbi = JFS_SBI(sb); 144 s64 maxinodes; 145 struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap; 146 147 jfs_info("In jfs_statfs"); 148 buf->f_type = JFS_SUPER_MAGIC; 149 buf->f_bsize = sbi->bsize; 150 buf->f_blocks = sbi->bmap->db_mapsize; 151 buf->f_bfree = sbi->bmap->db_nfree; 152 buf->f_bavail = sbi->bmap->db_nfree; 153 /* 154 * If we really return the number of allocated & free inodes, some 155 * applications will fail because they won't see enough free inodes. 156 * We'll try to calculate some guess as to how may inodes we can 157 * really allocate 158 * 159 * buf->f_files = atomic_read(&imap->im_numinos); 160 * buf->f_ffree = atomic_read(&imap->im_numfree); 161 */ 162 maxinodes = min((s64) atomic_read(&imap->im_numinos) + 163 ((sbi->bmap->db_nfree >> imap->im_l2nbperiext) 164 << L2INOSPEREXT), (s64) 0xffffffffLL); 165 buf->f_files = maxinodes; 166 buf->f_ffree = maxinodes - (atomic_read(&imap->im_numinos) - 167 atomic_read(&imap->im_numfree)); 168 169 buf->f_namelen = JFS_NAME_MAX; 170 return 0; 171 } 172 173 static void jfs_put_super(struct super_block *sb) 174 { 175 struct jfs_sb_info *sbi = JFS_SBI(sb); 176 int rc; 177 178 jfs_info("In jfs_put_super"); 179 rc = jfs_umount(sb); 180 if (rc) 181 jfs_err("jfs_umount failed with return code %d", rc); 182 if (sbi->nls_tab) 183 unload_nls(sbi->nls_tab); 184 sbi->nls_tab = NULL; 185 186 truncate_inode_pages(sbi->direct_inode->i_mapping, 0); 187 iput(sbi->direct_inode); 188 sbi->direct_inode = NULL; 189 190 kfree(sbi); 191 } 192 193 enum { 194 Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize, 195 Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, 196 }; 197 198 static match_table_t tokens = { 199 {Opt_integrity, "integrity"}, 200 {Opt_nointegrity, "nointegrity"}, 201 {Opt_iocharset, "iocharset=%s"}, 202 {Opt_resize, "resize=%u"}, 203 {Opt_resize_nosize, "resize"}, 204 {Opt_errors, "errors=%s"}, 205 {Opt_ignore, "noquota"}, 206 {Opt_ignore, "quota"}, 207 {Opt_ignore, "usrquota"}, 208 {Opt_ignore, "grpquota"}, 209 {Opt_err, NULL} 210 }; 211 212 static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, 213 int *flag) 214 { 215 void *nls_map = (void *)-1; /* -1: no change; NULL: none */ 216 char *p; 217 struct jfs_sb_info *sbi = JFS_SBI(sb); 218 219 *newLVSize = 0; 220 221 if (!options) 222 return 1; 223 224 while ((p = strsep(&options, ",")) != NULL) { 225 substring_t args[MAX_OPT_ARGS]; 226 int token; 227 if (!*p) 228 continue; 229 230 token = match_token(p, tokens, args); 231 switch (token) { 232 case Opt_integrity: 233 *flag &= ~JFS_NOINTEGRITY; 234 break; 235 case Opt_nointegrity: 236 *flag |= JFS_NOINTEGRITY; 237 break; 238 case Opt_ignore: 239 /* Silently ignore the quota options */ 240 /* Don't do anything ;-) */ 241 break; 242 case Opt_iocharset: 243 if (nls_map && nls_map != (void *) -1) 244 unload_nls(nls_map); 245 if (!strcmp(args[0].from, "none")) 246 nls_map = NULL; 247 else { 248 nls_map = load_nls(args[0].from); 249 if (!nls_map) { 250 printk(KERN_ERR 251 "JFS: charset not found\n"); 252 goto cleanup; 253 } 254 } 255 break; 256 case Opt_resize: 257 { 258 char *resize = args[0].from; 259 *newLVSize = simple_strtoull(resize, &resize, 0); 260 break; 261 } 262 case Opt_resize_nosize: 263 { 264 *newLVSize = sb->s_bdev->bd_inode->i_size >> 265 sb->s_blocksize_bits; 266 if (*newLVSize == 0) 267 printk(KERN_ERR 268 "JFS: Cannot determine volume size\n"); 269 break; 270 } 271 case Opt_errors: 272 { 273 char *errors = args[0].from; 274 if (!errors || !*errors) 275 goto cleanup; 276 if (!strcmp(errors, "continue")) { 277 *flag &= ~JFS_ERR_REMOUNT_RO; 278 *flag &= ~JFS_ERR_PANIC; 279 *flag |= JFS_ERR_CONTINUE; 280 } else if (!strcmp(errors, "remount-ro")) { 281 *flag &= ~JFS_ERR_CONTINUE; 282 *flag &= ~JFS_ERR_PANIC; 283 *flag |= JFS_ERR_REMOUNT_RO; 284 } else if (!strcmp(errors, "panic")) { 285 *flag &= ~JFS_ERR_CONTINUE; 286 *flag &= ~JFS_ERR_REMOUNT_RO; 287 *flag |= JFS_ERR_PANIC; 288 } else { 289 printk(KERN_ERR 290 "JFS: %s is an invalid error handler\n", 291 errors); 292 goto cleanup; 293 } 294 break; 295 } 296 default: 297 printk("jfs: Unrecognized mount option \"%s\" " 298 " or missing value\n", p); 299 goto cleanup; 300 } 301 } 302 303 if (nls_map != (void *) -1) { 304 /* Discard old (if remount) */ 305 if (sbi->nls_tab) 306 unload_nls(sbi->nls_tab); 307 sbi->nls_tab = nls_map; 308 } 309 return 1; 310 311 cleanup: 312 if (nls_map && nls_map != (void *) -1) 313 unload_nls(nls_map); 314 return 0; 315 } 316 317 static int jfs_remount(struct super_block *sb, int *flags, char *data) 318 { 319 s64 newLVSize = 0; 320 int rc = 0; 321 int flag = JFS_SBI(sb)->flag; 322 323 if (!parse_options(data, sb, &newLVSize, &flag)) { 324 return -EINVAL; 325 } 326 if (newLVSize) { 327 if (sb->s_flags & MS_RDONLY) { 328 printk(KERN_ERR 329 "JFS: resize requires volume to be mounted read-write\n"); 330 return -EROFS; 331 } 332 rc = jfs_extendfs(sb, newLVSize, 0); 333 if (rc) 334 return rc; 335 } 336 337 if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) { 338 /* 339 * Invalidate any previously read metadata. fsck may have 340 * changed the on-disk data since we mounted r/o 341 */ 342 truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0); 343 344 JFS_SBI(sb)->flag = flag; 345 return jfs_mount_rw(sb, 1); 346 } 347 if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) { 348 rc = jfs_umount_rw(sb); 349 JFS_SBI(sb)->flag = flag; 350 return rc; 351 } 352 if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY)) 353 if (!(sb->s_flags & MS_RDONLY)) { 354 rc = jfs_umount_rw(sb); 355 if (rc) 356 return rc; 357 JFS_SBI(sb)->flag = flag; 358 return jfs_mount_rw(sb, 1); 359 } 360 JFS_SBI(sb)->flag = flag; 361 362 return 0; 363 } 364 365 static int jfs_fill_super(struct super_block *sb, void *data, int silent) 366 { 367 struct jfs_sb_info *sbi; 368 struct inode *inode; 369 int rc; 370 s64 newLVSize = 0; 371 int flag; 372 373 jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags); 374 375 if (!new_valid_dev(sb->s_bdev->bd_dev)) 376 return -EOVERFLOW; 377 378 sbi = kmalloc(sizeof (struct jfs_sb_info), GFP_KERNEL); 379 if (!sbi) 380 return -ENOSPC; 381 memset(sbi, 0, sizeof (struct jfs_sb_info)); 382 sb->s_fs_info = sbi; 383 sbi->sb = sb; 384 385 /* initialize the mount flag and determine the default error handler */ 386 flag = JFS_ERR_REMOUNT_RO; 387 388 if (!parse_options((char *) data, sb, &newLVSize, &flag)) { 389 kfree(sbi); 390 return -EINVAL; 391 } 392 sbi->flag = flag; 393 394 #ifdef CONFIG_JFS_POSIX_ACL 395 sb->s_flags |= MS_POSIXACL; 396 #endif 397 398 if (newLVSize) { 399 printk(KERN_ERR "resize option for remount only\n"); 400 return -EINVAL; 401 } 402 403 /* 404 * Initialize blocksize to 4K. 405 */ 406 sb_set_blocksize(sb, PSIZE); 407 408 /* 409 * Set method vectors. 410 */ 411 sb->s_op = &jfs_super_operations; 412 sb->s_export_op = &jfs_export_operations; 413 414 /* 415 * Initialize direct-mapping inode/address-space 416 */ 417 inode = new_inode(sb); 418 if (inode == NULL) 419 goto out_kfree; 420 inode->i_ino = 0; 421 inode->i_nlink = 1; 422 inode->i_size = sb->s_bdev->bd_inode->i_size; 423 inode->i_mapping->a_ops = &jfs_metapage_aops; 424 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); 425 426 sbi->direct_inode = inode; 427 428 rc = jfs_mount(sb); 429 if (rc) { 430 if (!silent) { 431 jfs_err("jfs_mount failed w/return code = %d", rc); 432 } 433 goto out_mount_failed; 434 } 435 if (sb->s_flags & MS_RDONLY) 436 sbi->log = NULL; 437 else { 438 rc = jfs_mount_rw(sb, 0); 439 if (rc) { 440 if (!silent) { 441 jfs_err("jfs_mount_rw failed, return code = %d", 442 rc); 443 } 444 goto out_no_rw; 445 } 446 } 447 448 sb->s_magic = JFS_SUPER_MAGIC; 449 450 inode = iget(sb, ROOT_I); 451 if (!inode || is_bad_inode(inode)) 452 goto out_no_root; 453 sb->s_root = d_alloc_root(inode); 454 if (!sb->s_root) 455 goto out_no_root; 456 457 if (sbi->mntflag & JFS_OS2) 458 sb->s_root->d_op = &jfs_ci_dentry_operations; 459 460 /* logical blocks are represented by 40 bits in pxd_t, etc. */ 461 sb->s_maxbytes = ((u64) sb->s_blocksize) << 40; 462 #if BITS_PER_LONG == 32 463 /* 464 * Page cache is indexed by long. 465 * I would use MAX_LFS_FILESIZE, but it's only half as big 466 */ 467 sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, sb->s_maxbytes); 468 #endif 469 sb->s_time_gran = 1; 470 return 0; 471 472 out_no_root: 473 jfs_err("jfs_read_super: get root inode failed"); 474 if (inode) 475 iput(inode); 476 477 out_no_rw: 478 rc = jfs_umount(sb); 479 if (rc) { 480 jfs_err("jfs_umount failed with return code %d", rc); 481 } 482 out_mount_failed: 483 filemap_fdatawrite(sbi->direct_inode->i_mapping); 484 filemap_fdatawait(sbi->direct_inode->i_mapping); 485 truncate_inode_pages(sbi->direct_inode->i_mapping, 0); 486 make_bad_inode(sbi->direct_inode); 487 iput(sbi->direct_inode); 488 sbi->direct_inode = NULL; 489 out_kfree: 490 if (sbi->nls_tab) 491 unload_nls(sbi->nls_tab); 492 kfree(sbi); 493 return -EINVAL; 494 } 495 496 static void jfs_write_super_lockfs(struct super_block *sb) 497 { 498 struct jfs_sb_info *sbi = JFS_SBI(sb); 499 struct jfs_log *log = sbi->log; 500 501 if (!(sb->s_flags & MS_RDONLY)) { 502 txQuiesce(sb); 503 lmLogShutdown(log); 504 updateSuper(sb, FM_CLEAN); 505 } 506 } 507 508 static void jfs_unlockfs(struct super_block *sb) 509 { 510 struct jfs_sb_info *sbi = JFS_SBI(sb); 511 struct jfs_log *log = sbi->log; 512 int rc = 0; 513 514 if (!(sb->s_flags & MS_RDONLY)) { 515 updateSuper(sb, FM_MOUNT); 516 if ((rc = lmLogInit(log))) 517 jfs_err("jfs_unlock failed with return code %d", rc); 518 else 519 txResume(sb); 520 } 521 } 522 523 static struct super_block *jfs_get_sb(struct file_system_type *fs_type, 524 int flags, const char *dev_name, void *data) 525 { 526 return get_sb_bdev(fs_type, flags, dev_name, data, jfs_fill_super); 527 } 528 529 static int jfs_sync_fs(struct super_block *sb, int wait) 530 { 531 struct jfs_log *log = JFS_SBI(sb)->log; 532 533 /* log == NULL indicates read-only mount */ 534 if (log) { 535 jfs_flush_journal(log, wait); 536 jfs_syncpt(log, 0); 537 } 538 539 return 0; 540 } 541 542 static struct super_operations jfs_super_operations = { 543 .alloc_inode = jfs_alloc_inode, 544 .destroy_inode = jfs_destroy_inode, 545 .read_inode = jfs_read_inode, 546 .dirty_inode = jfs_dirty_inode, 547 .write_inode = jfs_write_inode, 548 .delete_inode = jfs_delete_inode, 549 .put_super = jfs_put_super, 550 .sync_fs = jfs_sync_fs, 551 .write_super_lockfs = jfs_write_super_lockfs, 552 .unlockfs = jfs_unlockfs, 553 .statfs = jfs_statfs, 554 .remount_fs = jfs_remount, 555 }; 556 557 static struct export_operations jfs_export_operations = { 558 .get_parent = jfs_get_parent, 559 }; 560 561 static struct file_system_type jfs_fs_type = { 562 .owner = THIS_MODULE, 563 .name = "jfs", 564 .get_sb = jfs_get_sb, 565 .kill_sb = kill_block_super, 566 .fs_flags = FS_REQUIRES_DEV, 567 }; 568 569 static void init_once(void *foo, kmem_cache_t * cachep, unsigned long flags) 570 { 571 struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo; 572 573 if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) == 574 SLAB_CTOR_CONSTRUCTOR) { 575 memset(jfs_ip, 0, sizeof(struct jfs_inode_info)); 576 INIT_LIST_HEAD(&jfs_ip->anon_inode_list); 577 init_rwsem(&jfs_ip->rdwrlock); 578 init_MUTEX(&jfs_ip->commit_sem); 579 init_rwsem(&jfs_ip->xattr_sem); 580 spin_lock_init(&jfs_ip->ag_lock); 581 jfs_ip->active_ag = -1; 582 #ifdef CONFIG_JFS_POSIX_ACL 583 jfs_ip->i_acl = JFS_ACL_NOT_CACHED; 584 jfs_ip->i_default_acl = JFS_ACL_NOT_CACHED; 585 #endif 586 inode_init_once(&jfs_ip->vfs_inode); 587 } 588 } 589 590 static int __init init_jfs_fs(void) 591 { 592 int i; 593 int rc; 594 595 jfs_inode_cachep = 596 kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0, 597 SLAB_RECLAIM_ACCOUNT, init_once, NULL); 598 if (jfs_inode_cachep == NULL) 599 return -ENOMEM; 600 601 /* 602 * Metapage initialization 603 */ 604 rc = metapage_init(); 605 if (rc) { 606 jfs_err("metapage_init failed w/rc = %d", rc); 607 goto free_slab; 608 } 609 610 /* 611 * Transaction Manager initialization 612 */ 613 rc = txInit(); 614 if (rc) { 615 jfs_err("txInit failed w/rc = %d", rc); 616 goto free_metapage; 617 } 618 619 /* 620 * I/O completion thread (endio) 621 */ 622 jfsIOthread = kernel_thread(jfsIOWait, NULL, CLONE_KERNEL); 623 if (jfsIOthread < 0) { 624 jfs_err("init_jfs_fs: fork failed w/rc = %d", jfsIOthread); 625 goto end_txmngr; 626 } 627 wait_for_completion(&jfsIOwait); /* Wait until thread starts */ 628 629 if (commit_threads < 1) 630 commit_threads = num_online_cpus(); 631 if (commit_threads > MAX_COMMIT_THREADS) 632 commit_threads = MAX_COMMIT_THREADS; 633 634 for (i = 0; i < commit_threads; i++) { 635 jfsCommitThread[i] = kernel_thread(jfs_lazycommit, NULL, 636 CLONE_KERNEL); 637 if (jfsCommitThread[i] < 0) { 638 jfs_err("init_jfs_fs: fork failed w/rc = %d", 639 jfsCommitThread[i]); 640 commit_threads = i; 641 goto kill_committask; 642 } 643 /* Wait until thread starts */ 644 wait_for_completion(&jfsIOwait); 645 } 646 647 jfsSyncThread = kernel_thread(jfs_sync, NULL, CLONE_KERNEL); 648 if (jfsSyncThread < 0) { 649 jfs_err("init_jfs_fs: fork failed w/rc = %d", jfsSyncThread); 650 goto kill_committask; 651 } 652 wait_for_completion(&jfsIOwait); /* Wait until thread starts */ 653 654 #ifdef PROC_FS_JFS 655 jfs_proc_init(); 656 #endif 657 658 return register_filesystem(&jfs_fs_type); 659 660 kill_committask: 661 jfs_stop_threads = 1; 662 wake_up_all(&jfs_commit_thread_wait); 663 for (i = 0; i < commit_threads; i++) 664 wait_for_completion(&jfsIOwait); 665 666 wake_up(&jfs_IO_thread_wait); 667 wait_for_completion(&jfsIOwait); /* Wait for thread exit */ 668 end_txmngr: 669 txExit(); 670 free_metapage: 671 metapage_exit(); 672 free_slab: 673 kmem_cache_destroy(jfs_inode_cachep); 674 return rc; 675 } 676 677 static void __exit exit_jfs_fs(void) 678 { 679 int i; 680 681 jfs_info("exit_jfs_fs called"); 682 683 jfs_stop_threads = 1; 684 txExit(); 685 metapage_exit(); 686 wake_up(&jfs_IO_thread_wait); 687 wait_for_completion(&jfsIOwait); /* Wait until IO thread exits */ 688 wake_up_all(&jfs_commit_thread_wait); 689 for (i = 0; i < commit_threads; i++) 690 wait_for_completion(&jfsIOwait); 691 wake_up(&jfs_sync_thread_wait); 692 wait_for_completion(&jfsIOwait); /* Wait until Sync thread exits */ 693 #ifdef PROC_FS_JFS 694 jfs_proc_clean(); 695 #endif 696 unregister_filesystem(&jfs_fs_type); 697 kmem_cache_destroy(jfs_inode_cachep); 698 } 699 700 module_init(init_jfs_fs) 701 module_exit(exit_jfs_fs) 702