1 /* 2 * linux/fs/minix/inode.c 3 * 4 * Copyright (C) 1991, 1992 Linus Torvalds 5 * 6 * Copyright (C) 1996 Gertjan van Wingerde 7 * Minix V2 fs support. 8 * 9 * Modified for 680x0 by Andreas Schwab 10 * Updated to filesystem version 3 by Daniel Aragones 11 */ 12 13 #include <linux/module.h> 14 #include "minix.h" 15 #include <linux/buffer_head.h> 16 #include <linux/slab.h> 17 #include <linux/init.h> 18 #include <linux/highuid.h> 19 #include <linux/vfs.h> 20 21 static int minix_write_inode(struct inode * inode, int wait); 22 static int minix_statfs(struct dentry *dentry, struct kstatfs *buf); 23 static int minix_remount (struct super_block * sb, int * flags, char * data); 24 25 static void minix_delete_inode(struct inode *inode) 26 { 27 truncate_inode_pages(&inode->i_data, 0); 28 inode->i_size = 0; 29 minix_truncate(inode); 30 minix_free_inode(inode); 31 } 32 33 static void minix_put_super(struct super_block *sb) 34 { 35 int i; 36 struct minix_sb_info *sbi = minix_sb(sb); 37 38 lock_kernel(); 39 40 if (!(sb->s_flags & MS_RDONLY)) { 41 if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ 42 sbi->s_ms->s_state = sbi->s_mount_state; 43 mark_buffer_dirty(sbi->s_sbh); 44 } 45 for (i = 0; i < sbi->s_imap_blocks; i++) 46 brelse(sbi->s_imap[i]); 47 for (i = 0; i < sbi->s_zmap_blocks; i++) 48 brelse(sbi->s_zmap[i]); 49 brelse (sbi->s_sbh); 50 kfree(sbi->s_imap); 51 sb->s_fs_info = NULL; 52 kfree(sbi); 53 54 unlock_kernel(); 55 } 56 57 static struct kmem_cache * minix_inode_cachep; 58 59 static struct inode *minix_alloc_inode(struct super_block *sb) 60 { 61 struct minix_inode_info *ei; 62 ei = (struct minix_inode_info *)kmem_cache_alloc(minix_inode_cachep, GFP_KERNEL); 63 if (!ei) 64 return NULL; 65 return &ei->vfs_inode; 66 } 67 68 static void minix_destroy_inode(struct inode *inode) 69 { 70 kmem_cache_free(minix_inode_cachep, minix_i(inode)); 71 } 72 73 static void init_once(void *foo) 74 { 75 struct minix_inode_info *ei = (struct minix_inode_info *) foo; 76 77 inode_init_once(&ei->vfs_inode); 78 } 79 80 static int init_inodecache(void) 81 { 82 minix_inode_cachep = kmem_cache_create("minix_inode_cache", 83 sizeof(struct minix_inode_info), 84 0, (SLAB_RECLAIM_ACCOUNT| 85 SLAB_MEM_SPREAD), 86 init_once); 87 if (minix_inode_cachep == NULL) 88 return -ENOMEM; 89 return 0; 90 } 91 92 static void destroy_inodecache(void) 93 { 94 kmem_cache_destroy(minix_inode_cachep); 95 } 96 97 static const struct super_operations minix_sops = { 98 .alloc_inode = minix_alloc_inode, 99 .destroy_inode = minix_destroy_inode, 100 .write_inode = minix_write_inode, 101 .delete_inode = minix_delete_inode, 102 .put_super = minix_put_super, 103 .statfs = minix_statfs, 104 .remount_fs = minix_remount, 105 }; 106 107 static int minix_remount (struct super_block * sb, int * flags, char * data) 108 { 109 struct minix_sb_info * sbi = minix_sb(sb); 110 struct minix_super_block * ms; 111 112 ms = sbi->s_ms; 113 if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) 114 return 0; 115 if (*flags & MS_RDONLY) { 116 if (ms->s_state & MINIX_VALID_FS || 117 !(sbi->s_mount_state & MINIX_VALID_FS)) 118 return 0; 119 /* Mounting a rw partition read-only. */ 120 if (sbi->s_version != MINIX_V3) 121 ms->s_state = sbi->s_mount_state; 122 mark_buffer_dirty(sbi->s_sbh); 123 } else { 124 /* Mount a partition which is read-only, read-write. */ 125 if (sbi->s_version != MINIX_V3) { 126 sbi->s_mount_state = ms->s_state; 127 ms->s_state &= ~MINIX_VALID_FS; 128 } else { 129 sbi->s_mount_state = MINIX_VALID_FS; 130 } 131 mark_buffer_dirty(sbi->s_sbh); 132 133 if (!(sbi->s_mount_state & MINIX_VALID_FS)) 134 printk("MINIX-fs warning: remounting unchecked fs, " 135 "running fsck is recommended\n"); 136 else if ((sbi->s_mount_state & MINIX_ERROR_FS)) 137 printk("MINIX-fs warning: remounting fs with errors, " 138 "running fsck is recommended\n"); 139 } 140 return 0; 141 } 142 143 static int minix_fill_super(struct super_block *s, void *data, int silent) 144 { 145 struct buffer_head *bh; 146 struct buffer_head **map; 147 struct minix_super_block *ms; 148 struct minix3_super_block *m3s = NULL; 149 unsigned long i, block; 150 struct inode *root_inode; 151 struct minix_sb_info *sbi; 152 int ret = -EINVAL; 153 154 sbi = kzalloc(sizeof(struct minix_sb_info), GFP_KERNEL); 155 if (!sbi) 156 return -ENOMEM; 157 s->s_fs_info = sbi; 158 159 BUILD_BUG_ON(32 != sizeof (struct minix_inode)); 160 BUILD_BUG_ON(64 != sizeof(struct minix2_inode)); 161 162 if (!sb_set_blocksize(s, BLOCK_SIZE)) 163 goto out_bad_hblock; 164 165 if (!(bh = sb_bread(s, 1))) 166 goto out_bad_sb; 167 168 ms = (struct minix_super_block *) bh->b_data; 169 sbi->s_ms = ms; 170 sbi->s_sbh = bh; 171 sbi->s_mount_state = ms->s_state; 172 sbi->s_ninodes = ms->s_ninodes; 173 sbi->s_nzones = ms->s_nzones; 174 sbi->s_imap_blocks = ms->s_imap_blocks; 175 sbi->s_zmap_blocks = ms->s_zmap_blocks; 176 sbi->s_firstdatazone = ms->s_firstdatazone; 177 sbi->s_log_zone_size = ms->s_log_zone_size; 178 sbi->s_max_size = ms->s_max_size; 179 s->s_magic = ms->s_magic; 180 if (s->s_magic == MINIX_SUPER_MAGIC) { 181 sbi->s_version = MINIX_V1; 182 sbi->s_dirsize = 16; 183 sbi->s_namelen = 14; 184 sbi->s_link_max = MINIX_LINK_MAX; 185 } else if (s->s_magic == MINIX_SUPER_MAGIC2) { 186 sbi->s_version = MINIX_V1; 187 sbi->s_dirsize = 32; 188 sbi->s_namelen = 30; 189 sbi->s_link_max = MINIX_LINK_MAX; 190 } else if (s->s_magic == MINIX2_SUPER_MAGIC) { 191 sbi->s_version = MINIX_V2; 192 sbi->s_nzones = ms->s_zones; 193 sbi->s_dirsize = 16; 194 sbi->s_namelen = 14; 195 sbi->s_link_max = MINIX2_LINK_MAX; 196 } else if (s->s_magic == MINIX2_SUPER_MAGIC2) { 197 sbi->s_version = MINIX_V2; 198 sbi->s_nzones = ms->s_zones; 199 sbi->s_dirsize = 32; 200 sbi->s_namelen = 30; 201 sbi->s_link_max = MINIX2_LINK_MAX; 202 } else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) { 203 m3s = (struct minix3_super_block *) bh->b_data; 204 s->s_magic = m3s->s_magic; 205 sbi->s_imap_blocks = m3s->s_imap_blocks; 206 sbi->s_zmap_blocks = m3s->s_zmap_blocks; 207 sbi->s_firstdatazone = m3s->s_firstdatazone; 208 sbi->s_log_zone_size = m3s->s_log_zone_size; 209 sbi->s_max_size = m3s->s_max_size; 210 sbi->s_ninodes = m3s->s_ninodes; 211 sbi->s_nzones = m3s->s_zones; 212 sbi->s_dirsize = 64; 213 sbi->s_namelen = 60; 214 sbi->s_version = MINIX_V3; 215 sbi->s_link_max = MINIX2_LINK_MAX; 216 sbi->s_mount_state = MINIX_VALID_FS; 217 sb_set_blocksize(s, m3s->s_blocksize); 218 } else 219 goto out_no_fs; 220 221 /* 222 * Allocate the buffer map to keep the superblock small. 223 */ 224 if (sbi->s_imap_blocks == 0 || sbi->s_zmap_blocks == 0) 225 goto out_illegal_sb; 226 i = (sbi->s_imap_blocks + sbi->s_zmap_blocks) * sizeof(bh); 227 map = kzalloc(i, GFP_KERNEL); 228 if (!map) 229 goto out_no_map; 230 sbi->s_imap = &map[0]; 231 sbi->s_zmap = &map[sbi->s_imap_blocks]; 232 233 block=2; 234 for (i=0 ; i < sbi->s_imap_blocks ; i++) { 235 if (!(sbi->s_imap[i]=sb_bread(s, block))) 236 goto out_no_bitmap; 237 block++; 238 } 239 for (i=0 ; i < sbi->s_zmap_blocks ; i++) { 240 if (!(sbi->s_zmap[i]=sb_bread(s, block))) 241 goto out_no_bitmap; 242 block++; 243 } 244 245 minix_set_bit(0,sbi->s_imap[0]->b_data); 246 minix_set_bit(0,sbi->s_zmap[0]->b_data); 247 248 /* set up enough so that it can read an inode */ 249 s->s_op = &minix_sops; 250 root_inode = minix_iget(s, MINIX_ROOT_INO); 251 if (IS_ERR(root_inode)) { 252 ret = PTR_ERR(root_inode); 253 goto out_no_root; 254 } 255 256 ret = -ENOMEM; 257 s->s_root = d_alloc_root(root_inode); 258 if (!s->s_root) 259 goto out_iput; 260 261 if (!(s->s_flags & MS_RDONLY)) { 262 if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ 263 ms->s_state &= ~MINIX_VALID_FS; 264 mark_buffer_dirty(bh); 265 } 266 if (!(sbi->s_mount_state & MINIX_VALID_FS)) 267 printk("MINIX-fs: mounting unchecked file system, " 268 "running fsck is recommended\n"); 269 else if (sbi->s_mount_state & MINIX_ERROR_FS) 270 printk("MINIX-fs: mounting file system with errors, " 271 "running fsck is recommended\n"); 272 return 0; 273 274 out_iput: 275 iput(root_inode); 276 goto out_freemap; 277 278 out_no_root: 279 if (!silent) 280 printk("MINIX-fs: get root inode failed\n"); 281 goto out_freemap; 282 283 out_no_bitmap: 284 printk("MINIX-fs: bad superblock or unable to read bitmaps\n"); 285 out_freemap: 286 for (i = 0; i < sbi->s_imap_blocks; i++) 287 brelse(sbi->s_imap[i]); 288 for (i = 0; i < sbi->s_zmap_blocks; i++) 289 brelse(sbi->s_zmap[i]); 290 kfree(sbi->s_imap); 291 goto out_release; 292 293 out_no_map: 294 ret = -ENOMEM; 295 if (!silent) 296 printk("MINIX-fs: can't allocate map\n"); 297 goto out_release; 298 299 out_illegal_sb: 300 if (!silent) 301 printk("MINIX-fs: bad superblock\n"); 302 goto out_release; 303 304 out_no_fs: 305 if (!silent) 306 printk("VFS: Can't find a Minix filesystem V1 | V2 | V3 " 307 "on device %s.\n", s->s_id); 308 out_release: 309 brelse(bh); 310 goto out; 311 312 out_bad_hblock: 313 printk("MINIX-fs: blocksize too small for device\n"); 314 goto out; 315 316 out_bad_sb: 317 printk("MINIX-fs: unable to read superblock\n"); 318 out: 319 s->s_fs_info = NULL; 320 kfree(sbi); 321 return ret; 322 } 323 324 static int minix_statfs(struct dentry *dentry, struct kstatfs *buf) 325 { 326 struct super_block *sb = dentry->d_sb; 327 struct minix_sb_info *sbi = minix_sb(sb); 328 u64 id = huge_encode_dev(sb->s_bdev->bd_dev); 329 buf->f_type = sb->s_magic; 330 buf->f_bsize = sb->s_blocksize; 331 buf->f_blocks = (sbi->s_nzones - sbi->s_firstdatazone) << sbi->s_log_zone_size; 332 buf->f_bfree = minix_count_free_blocks(sbi); 333 buf->f_bavail = buf->f_bfree; 334 buf->f_files = sbi->s_ninodes; 335 buf->f_ffree = minix_count_free_inodes(sbi); 336 buf->f_namelen = sbi->s_namelen; 337 buf->f_fsid.val[0] = (u32)id; 338 buf->f_fsid.val[1] = (u32)(id >> 32); 339 340 return 0; 341 } 342 343 static int minix_get_block(struct inode *inode, sector_t block, 344 struct buffer_head *bh_result, int create) 345 { 346 if (INODE_VERSION(inode) == MINIX_V1) 347 return V1_minix_get_block(inode, block, bh_result, create); 348 else 349 return V2_minix_get_block(inode, block, bh_result, create); 350 } 351 352 static int minix_writepage(struct page *page, struct writeback_control *wbc) 353 { 354 return block_write_full_page(page, minix_get_block, wbc); 355 } 356 357 static int minix_readpage(struct file *file, struct page *page) 358 { 359 return block_read_full_page(page,minix_get_block); 360 } 361 362 int __minix_write_begin(struct file *file, struct address_space *mapping, 363 loff_t pos, unsigned len, unsigned flags, 364 struct page **pagep, void **fsdata) 365 { 366 return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, 367 minix_get_block); 368 } 369 370 static int minix_write_begin(struct file *file, struct address_space *mapping, 371 loff_t pos, unsigned len, unsigned flags, 372 struct page **pagep, void **fsdata) 373 { 374 *pagep = NULL; 375 return __minix_write_begin(file, mapping, pos, len, flags, pagep, fsdata); 376 } 377 378 static sector_t minix_bmap(struct address_space *mapping, sector_t block) 379 { 380 return generic_block_bmap(mapping,block,minix_get_block); 381 } 382 383 static const struct address_space_operations minix_aops = { 384 .readpage = minix_readpage, 385 .writepage = minix_writepage, 386 .sync_page = block_sync_page, 387 .write_begin = minix_write_begin, 388 .write_end = generic_write_end, 389 .bmap = minix_bmap 390 }; 391 392 static const struct inode_operations minix_symlink_inode_operations = { 393 .readlink = generic_readlink, 394 .follow_link = page_follow_link_light, 395 .put_link = page_put_link, 396 .getattr = minix_getattr, 397 }; 398 399 void minix_set_inode(struct inode *inode, dev_t rdev) 400 { 401 if (S_ISREG(inode->i_mode)) { 402 inode->i_op = &minix_file_inode_operations; 403 inode->i_fop = &minix_file_operations; 404 inode->i_mapping->a_ops = &minix_aops; 405 } else if (S_ISDIR(inode->i_mode)) { 406 inode->i_op = &minix_dir_inode_operations; 407 inode->i_fop = &minix_dir_operations; 408 inode->i_mapping->a_ops = &minix_aops; 409 } else if (S_ISLNK(inode->i_mode)) { 410 inode->i_op = &minix_symlink_inode_operations; 411 inode->i_mapping->a_ops = &minix_aops; 412 } else 413 init_special_inode(inode, inode->i_mode, rdev); 414 } 415 416 /* 417 * The minix V1 function to read an inode. 418 */ 419 static struct inode *V1_minix_iget(struct inode *inode) 420 { 421 struct buffer_head * bh; 422 struct minix_inode * raw_inode; 423 struct minix_inode_info *minix_inode = minix_i(inode); 424 int i; 425 426 raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh); 427 if (!raw_inode) { 428 iget_failed(inode); 429 return ERR_PTR(-EIO); 430 } 431 inode->i_mode = raw_inode->i_mode; 432 inode->i_uid = (uid_t)raw_inode->i_uid; 433 inode->i_gid = (gid_t)raw_inode->i_gid; 434 inode->i_nlink = raw_inode->i_nlinks; 435 inode->i_size = raw_inode->i_size; 436 inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = raw_inode->i_time; 437 inode->i_mtime.tv_nsec = 0; 438 inode->i_atime.tv_nsec = 0; 439 inode->i_ctime.tv_nsec = 0; 440 inode->i_blocks = 0; 441 for (i = 0; i < 9; i++) 442 minix_inode->u.i1_data[i] = raw_inode->i_zone[i]; 443 minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0])); 444 brelse(bh); 445 unlock_new_inode(inode); 446 return inode; 447 } 448 449 /* 450 * The minix V2 function to read an inode. 451 */ 452 static struct inode *V2_minix_iget(struct inode *inode) 453 { 454 struct buffer_head * bh; 455 struct minix2_inode * raw_inode; 456 struct minix_inode_info *minix_inode = minix_i(inode); 457 int i; 458 459 raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh); 460 if (!raw_inode) { 461 iget_failed(inode); 462 return ERR_PTR(-EIO); 463 } 464 inode->i_mode = raw_inode->i_mode; 465 inode->i_uid = (uid_t)raw_inode->i_uid; 466 inode->i_gid = (gid_t)raw_inode->i_gid; 467 inode->i_nlink = raw_inode->i_nlinks; 468 inode->i_size = raw_inode->i_size; 469 inode->i_mtime.tv_sec = raw_inode->i_mtime; 470 inode->i_atime.tv_sec = raw_inode->i_atime; 471 inode->i_ctime.tv_sec = raw_inode->i_ctime; 472 inode->i_mtime.tv_nsec = 0; 473 inode->i_atime.tv_nsec = 0; 474 inode->i_ctime.tv_nsec = 0; 475 inode->i_blocks = 0; 476 for (i = 0; i < 10; i++) 477 minix_inode->u.i2_data[i] = raw_inode->i_zone[i]; 478 minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0])); 479 brelse(bh); 480 unlock_new_inode(inode); 481 return inode; 482 } 483 484 /* 485 * The global function to read an inode. 486 */ 487 struct inode *minix_iget(struct super_block *sb, unsigned long ino) 488 { 489 struct inode *inode; 490 491 inode = iget_locked(sb, ino); 492 if (!inode) 493 return ERR_PTR(-ENOMEM); 494 if (!(inode->i_state & I_NEW)) 495 return inode; 496 497 if (INODE_VERSION(inode) == MINIX_V1) 498 return V1_minix_iget(inode); 499 else 500 return V2_minix_iget(inode); 501 } 502 503 /* 504 * The minix V1 function to synchronize an inode. 505 */ 506 static struct buffer_head * V1_minix_update_inode(struct inode * inode) 507 { 508 struct buffer_head * bh; 509 struct minix_inode * raw_inode; 510 struct minix_inode_info *minix_inode = minix_i(inode); 511 int i; 512 513 raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh); 514 if (!raw_inode) 515 return NULL; 516 raw_inode->i_mode = inode->i_mode; 517 raw_inode->i_uid = fs_high2lowuid(inode->i_uid); 518 raw_inode->i_gid = fs_high2lowgid(inode->i_gid); 519 raw_inode->i_nlinks = inode->i_nlink; 520 raw_inode->i_size = inode->i_size; 521 raw_inode->i_time = inode->i_mtime.tv_sec; 522 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 523 raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); 524 else for (i = 0; i < 9; i++) 525 raw_inode->i_zone[i] = minix_inode->u.i1_data[i]; 526 mark_buffer_dirty(bh); 527 return bh; 528 } 529 530 /* 531 * The minix V2 function to synchronize an inode. 532 */ 533 static struct buffer_head * V2_minix_update_inode(struct inode * inode) 534 { 535 struct buffer_head * bh; 536 struct minix2_inode * raw_inode; 537 struct minix_inode_info *minix_inode = minix_i(inode); 538 int i; 539 540 raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh); 541 if (!raw_inode) 542 return NULL; 543 raw_inode->i_mode = inode->i_mode; 544 raw_inode->i_uid = fs_high2lowuid(inode->i_uid); 545 raw_inode->i_gid = fs_high2lowgid(inode->i_gid); 546 raw_inode->i_nlinks = inode->i_nlink; 547 raw_inode->i_size = inode->i_size; 548 raw_inode->i_mtime = inode->i_mtime.tv_sec; 549 raw_inode->i_atime = inode->i_atime.tv_sec; 550 raw_inode->i_ctime = inode->i_ctime.tv_sec; 551 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 552 raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); 553 else for (i = 0; i < 10; i++) 554 raw_inode->i_zone[i] = minix_inode->u.i2_data[i]; 555 mark_buffer_dirty(bh); 556 return bh; 557 } 558 559 static int minix_write_inode(struct inode *inode, int wait) 560 { 561 int err = 0; 562 struct buffer_head *bh; 563 564 if (INODE_VERSION(inode) == MINIX_V1) 565 bh = V1_minix_update_inode(inode); 566 else 567 bh = V2_minix_update_inode(inode); 568 if (!bh) 569 return -EIO; 570 if (wait && buffer_dirty(bh)) { 571 sync_dirty_buffer(bh); 572 if (buffer_req(bh) && !buffer_uptodate(bh)) { 573 printk("IO error syncing minix inode [%s:%08lx]\n", 574 inode->i_sb->s_id, inode->i_ino); 575 err = -EIO; 576 } 577 } 578 brelse (bh); 579 return err; 580 } 581 582 int minix_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) 583 { 584 struct inode *dir = dentry->d_parent->d_inode; 585 struct super_block *sb = dir->i_sb; 586 generic_fillattr(dentry->d_inode, stat); 587 if (INODE_VERSION(dentry->d_inode) == MINIX_V1) 588 stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb); 589 else 590 stat->blocks = (sb->s_blocksize / 512) * V2_minix_blocks(stat->size, sb); 591 stat->blksize = sb->s_blocksize; 592 return 0; 593 } 594 595 /* 596 * The function that is called for file truncation. 597 */ 598 void minix_truncate(struct inode * inode) 599 { 600 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) 601 return; 602 if (INODE_VERSION(inode) == MINIX_V1) 603 V1_minix_truncate(inode); 604 else 605 V2_minix_truncate(inode); 606 } 607 608 static int minix_get_sb(struct file_system_type *fs_type, 609 int flags, const char *dev_name, void *data, struct vfsmount *mnt) 610 { 611 return get_sb_bdev(fs_type, flags, dev_name, data, minix_fill_super, 612 mnt); 613 } 614 615 static struct file_system_type minix_fs_type = { 616 .owner = THIS_MODULE, 617 .name = "minix", 618 .get_sb = minix_get_sb, 619 .kill_sb = kill_block_super, 620 .fs_flags = FS_REQUIRES_DEV, 621 }; 622 623 static int __init init_minix_fs(void) 624 { 625 int err = init_inodecache(); 626 if (err) 627 goto out1; 628 err = register_filesystem(&minix_fs_type); 629 if (err) 630 goto out; 631 return 0; 632 out: 633 destroy_inodecache(); 634 out1: 635 return err; 636 } 637 638 static void __exit exit_minix_fs(void) 639 { 640 unregister_filesystem(&minix_fs_type); 641 destroy_inodecache(); 642 } 643 644 module_init(init_minix_fs) 645 module_exit(exit_minix_fs) 646 MODULE_LICENSE("GPL"); 647 648