1 /* 2 * linux/fs/minix/inode.c 3 * 4 * Copyright (C) 1991, 1992 Linus Torvalds 5 * 6 * Copyright (C) 1996 Gertjan van Wingerde (gertjan@cs.vu.nl) 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 if (!(sb->s_flags & MS_RDONLY)) { 39 if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ 40 sbi->s_ms->s_state = sbi->s_mount_state; 41 mark_buffer_dirty(sbi->s_sbh); 42 } 43 for (i = 0; i < sbi->s_imap_blocks; i++) 44 brelse(sbi->s_imap[i]); 45 for (i = 0; i < sbi->s_zmap_blocks; i++) 46 brelse(sbi->s_zmap[i]); 47 brelse (sbi->s_sbh); 48 kfree(sbi->s_imap); 49 sb->s_fs_info = NULL; 50 kfree(sbi); 51 52 return; 53 } 54 55 static struct kmem_cache * minix_inode_cachep; 56 57 static struct inode *minix_alloc_inode(struct super_block *sb) 58 { 59 struct minix_inode_info *ei; 60 ei = (struct minix_inode_info *)kmem_cache_alloc(minix_inode_cachep, GFP_KERNEL); 61 if (!ei) 62 return NULL; 63 return &ei->vfs_inode; 64 } 65 66 static void minix_destroy_inode(struct inode *inode) 67 { 68 kmem_cache_free(minix_inode_cachep, minix_i(inode)); 69 } 70 71 static void init_once(void *foo) 72 { 73 struct minix_inode_info *ei = (struct minix_inode_info *) foo; 74 75 inode_init_once(&ei->vfs_inode); 76 } 77 78 static int init_inodecache(void) 79 { 80 minix_inode_cachep = kmem_cache_create("minix_inode_cache", 81 sizeof(struct minix_inode_info), 82 0, (SLAB_RECLAIM_ACCOUNT| 83 SLAB_MEM_SPREAD), 84 init_once); 85 if (minix_inode_cachep == NULL) 86 return -ENOMEM; 87 return 0; 88 } 89 90 static void destroy_inodecache(void) 91 { 92 kmem_cache_destroy(minix_inode_cachep); 93 } 94 95 static const struct super_operations minix_sops = { 96 .alloc_inode = minix_alloc_inode, 97 .destroy_inode = minix_destroy_inode, 98 .write_inode = minix_write_inode, 99 .delete_inode = minix_delete_inode, 100 .put_super = minix_put_super, 101 .statfs = minix_statfs, 102 .remount_fs = minix_remount, 103 }; 104 105 static int minix_remount (struct super_block * sb, int * flags, char * data) 106 { 107 struct minix_sb_info * sbi = minix_sb(sb); 108 struct minix_super_block * ms; 109 110 ms = sbi->s_ms; 111 if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) 112 return 0; 113 if (*flags & MS_RDONLY) { 114 if (ms->s_state & MINIX_VALID_FS || 115 !(sbi->s_mount_state & MINIX_VALID_FS)) 116 return 0; 117 /* Mounting a rw partition read-only. */ 118 if (sbi->s_version != MINIX_V3) 119 ms->s_state = sbi->s_mount_state; 120 mark_buffer_dirty(sbi->s_sbh); 121 } else { 122 /* Mount a partition which is read-only, read-write. */ 123 if (sbi->s_version != MINIX_V3) { 124 sbi->s_mount_state = ms->s_state; 125 ms->s_state &= ~MINIX_VALID_FS; 126 } else { 127 sbi->s_mount_state = MINIX_VALID_FS; 128 } 129 mark_buffer_dirty(sbi->s_sbh); 130 131 if (!(sbi->s_mount_state & MINIX_VALID_FS)) 132 printk("MINIX-fs warning: remounting unchecked fs, " 133 "running fsck is recommended\n"); 134 else if ((sbi->s_mount_state & MINIX_ERROR_FS)) 135 printk("MINIX-fs warning: remounting fs with errors, " 136 "running fsck is recommended\n"); 137 } 138 return 0; 139 } 140 141 static int minix_fill_super(struct super_block *s, void *data, int silent) 142 { 143 struct buffer_head *bh; 144 struct buffer_head **map; 145 struct minix_super_block *ms; 146 struct minix3_super_block *m3s = NULL; 147 unsigned long i, block; 148 struct inode *root_inode; 149 struct minix_sb_info *sbi; 150 int ret = -EINVAL; 151 152 sbi = kzalloc(sizeof(struct minix_sb_info), GFP_KERNEL); 153 if (!sbi) 154 return -ENOMEM; 155 s->s_fs_info = sbi; 156 157 BUILD_BUG_ON(32 != sizeof (struct minix_inode)); 158 BUILD_BUG_ON(64 != sizeof(struct minix2_inode)); 159 160 if (!sb_set_blocksize(s, BLOCK_SIZE)) 161 goto out_bad_hblock; 162 163 if (!(bh = sb_bread(s, 1))) 164 goto out_bad_sb; 165 166 ms = (struct minix_super_block *) bh->b_data; 167 sbi->s_ms = ms; 168 sbi->s_sbh = bh; 169 sbi->s_mount_state = ms->s_state; 170 sbi->s_ninodes = ms->s_ninodes; 171 sbi->s_nzones = ms->s_nzones; 172 sbi->s_imap_blocks = ms->s_imap_blocks; 173 sbi->s_zmap_blocks = ms->s_zmap_blocks; 174 sbi->s_firstdatazone = ms->s_firstdatazone; 175 sbi->s_log_zone_size = ms->s_log_zone_size; 176 sbi->s_max_size = ms->s_max_size; 177 s->s_magic = ms->s_magic; 178 if (s->s_magic == MINIX_SUPER_MAGIC) { 179 sbi->s_version = MINIX_V1; 180 sbi->s_dirsize = 16; 181 sbi->s_namelen = 14; 182 sbi->s_link_max = MINIX_LINK_MAX; 183 } else if (s->s_magic == MINIX_SUPER_MAGIC2) { 184 sbi->s_version = MINIX_V1; 185 sbi->s_dirsize = 32; 186 sbi->s_namelen = 30; 187 sbi->s_link_max = MINIX_LINK_MAX; 188 } else if (s->s_magic == MINIX2_SUPER_MAGIC) { 189 sbi->s_version = MINIX_V2; 190 sbi->s_nzones = ms->s_zones; 191 sbi->s_dirsize = 16; 192 sbi->s_namelen = 14; 193 sbi->s_link_max = MINIX2_LINK_MAX; 194 } else if (s->s_magic == MINIX2_SUPER_MAGIC2) { 195 sbi->s_version = MINIX_V2; 196 sbi->s_nzones = ms->s_zones; 197 sbi->s_dirsize = 32; 198 sbi->s_namelen = 30; 199 sbi->s_link_max = MINIX2_LINK_MAX; 200 } else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) { 201 m3s = (struct minix3_super_block *) bh->b_data; 202 s->s_magic = m3s->s_magic; 203 sbi->s_imap_blocks = m3s->s_imap_blocks; 204 sbi->s_zmap_blocks = m3s->s_zmap_blocks; 205 sbi->s_firstdatazone = m3s->s_firstdatazone; 206 sbi->s_log_zone_size = m3s->s_log_zone_size; 207 sbi->s_max_size = m3s->s_max_size; 208 sbi->s_ninodes = m3s->s_ninodes; 209 sbi->s_nzones = m3s->s_zones; 210 sbi->s_dirsize = 64; 211 sbi->s_namelen = 60; 212 sbi->s_version = MINIX_V3; 213 sbi->s_link_max = MINIX2_LINK_MAX; 214 sbi->s_mount_state = MINIX_VALID_FS; 215 sb_set_blocksize(s, m3s->s_blocksize); 216 } else 217 goto out_no_fs; 218 219 /* 220 * Allocate the buffer map to keep the superblock small. 221 */ 222 if (sbi->s_imap_blocks == 0 || sbi->s_zmap_blocks == 0) 223 goto out_illegal_sb; 224 i = (sbi->s_imap_blocks + sbi->s_zmap_blocks) * sizeof(bh); 225 map = kzalloc(i, GFP_KERNEL); 226 if (!map) 227 goto out_no_map; 228 sbi->s_imap = &map[0]; 229 sbi->s_zmap = &map[sbi->s_imap_blocks]; 230 231 block=2; 232 for (i=0 ; i < sbi->s_imap_blocks ; i++) { 233 if (!(sbi->s_imap[i]=sb_bread(s, block))) 234 goto out_no_bitmap; 235 block++; 236 } 237 for (i=0 ; i < sbi->s_zmap_blocks ; i++) { 238 if (!(sbi->s_zmap[i]=sb_bread(s, block))) 239 goto out_no_bitmap; 240 block++; 241 } 242 243 minix_set_bit(0,sbi->s_imap[0]->b_data); 244 minix_set_bit(0,sbi->s_zmap[0]->b_data); 245 246 /* set up enough so that it can read an inode */ 247 s->s_op = &minix_sops; 248 root_inode = minix_iget(s, MINIX_ROOT_INO); 249 if (IS_ERR(root_inode)) { 250 ret = PTR_ERR(root_inode); 251 goto out_no_root; 252 } 253 254 ret = -ENOMEM; 255 s->s_root = d_alloc_root(root_inode); 256 if (!s->s_root) 257 goto out_iput; 258 259 if (!(s->s_flags & MS_RDONLY)) { 260 if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */ 261 ms->s_state &= ~MINIX_VALID_FS; 262 mark_buffer_dirty(bh); 263 } 264 if (!(sbi->s_mount_state & MINIX_VALID_FS)) 265 printk("MINIX-fs: mounting unchecked file system, " 266 "running fsck is recommended\n"); 267 else if (sbi->s_mount_state & MINIX_ERROR_FS) 268 printk("MINIX-fs: mounting file system with errors, " 269 "running fsck is recommended\n"); 270 return 0; 271 272 out_iput: 273 iput(root_inode); 274 goto out_freemap; 275 276 out_no_root: 277 if (!silent) 278 printk("MINIX-fs: get root inode failed\n"); 279 goto out_freemap; 280 281 out_no_bitmap: 282 printk("MINIX-fs: bad superblock or unable to read bitmaps\n"); 283 out_freemap: 284 for (i = 0; i < sbi->s_imap_blocks; i++) 285 brelse(sbi->s_imap[i]); 286 for (i = 0; i < sbi->s_zmap_blocks; i++) 287 brelse(sbi->s_zmap[i]); 288 kfree(sbi->s_imap); 289 goto out_release; 290 291 out_no_map: 292 ret = -ENOMEM; 293 if (!silent) 294 printk("MINIX-fs: can't allocate map\n"); 295 goto out_release; 296 297 out_illegal_sb: 298 if (!silent) 299 printk("MINIX-fs: bad superblock\n"); 300 goto out_release; 301 302 out_no_fs: 303 if (!silent) 304 printk("VFS: Can't find a Minix filesystem V1 | V2 | V3 " 305 "on device %s.\n", s->s_id); 306 out_release: 307 brelse(bh); 308 goto out; 309 310 out_bad_hblock: 311 printk("MINIX-fs: blocksize too small for device\n"); 312 goto out; 313 314 out_bad_sb: 315 printk("MINIX-fs: unable to read superblock\n"); 316 out: 317 s->s_fs_info = NULL; 318 kfree(sbi); 319 return ret; 320 } 321 322 static int minix_statfs(struct dentry *dentry, struct kstatfs *buf) 323 { 324 struct minix_sb_info *sbi = minix_sb(dentry->d_sb); 325 buf->f_type = dentry->d_sb->s_magic; 326 buf->f_bsize = dentry->d_sb->s_blocksize; 327 buf->f_blocks = (sbi->s_nzones - sbi->s_firstdatazone) << sbi->s_log_zone_size; 328 buf->f_bfree = minix_count_free_blocks(sbi); 329 buf->f_bavail = buf->f_bfree; 330 buf->f_files = sbi->s_ninodes; 331 buf->f_ffree = minix_count_free_inodes(sbi); 332 buf->f_namelen = sbi->s_namelen; 333 return 0; 334 } 335 336 static int minix_get_block(struct inode *inode, sector_t block, 337 struct buffer_head *bh_result, int create) 338 { 339 if (INODE_VERSION(inode) == MINIX_V1) 340 return V1_minix_get_block(inode, block, bh_result, create); 341 else 342 return V2_minix_get_block(inode, block, bh_result, create); 343 } 344 345 static int minix_writepage(struct page *page, struct writeback_control *wbc) 346 { 347 return block_write_full_page(page, minix_get_block, wbc); 348 } 349 350 static int minix_readpage(struct file *file, struct page *page) 351 { 352 return block_read_full_page(page,minix_get_block); 353 } 354 355 int __minix_write_begin(struct file *file, struct address_space *mapping, 356 loff_t pos, unsigned len, unsigned flags, 357 struct page **pagep, void **fsdata) 358 { 359 return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata, 360 minix_get_block); 361 } 362 363 static int minix_write_begin(struct file *file, struct address_space *mapping, 364 loff_t pos, unsigned len, unsigned flags, 365 struct page **pagep, void **fsdata) 366 { 367 *pagep = NULL; 368 return __minix_write_begin(file, mapping, pos, len, flags, pagep, fsdata); 369 } 370 371 static sector_t minix_bmap(struct address_space *mapping, sector_t block) 372 { 373 return generic_block_bmap(mapping,block,minix_get_block); 374 } 375 376 static const struct address_space_operations minix_aops = { 377 .readpage = minix_readpage, 378 .writepage = minix_writepage, 379 .sync_page = block_sync_page, 380 .write_begin = minix_write_begin, 381 .write_end = generic_write_end, 382 .bmap = minix_bmap 383 }; 384 385 static const struct inode_operations minix_symlink_inode_operations = { 386 .readlink = generic_readlink, 387 .follow_link = page_follow_link_light, 388 .put_link = page_put_link, 389 .getattr = minix_getattr, 390 }; 391 392 void minix_set_inode(struct inode *inode, dev_t rdev) 393 { 394 if (S_ISREG(inode->i_mode)) { 395 inode->i_op = &minix_file_inode_operations; 396 inode->i_fop = &minix_file_operations; 397 inode->i_mapping->a_ops = &minix_aops; 398 } else if (S_ISDIR(inode->i_mode)) { 399 inode->i_op = &minix_dir_inode_operations; 400 inode->i_fop = &minix_dir_operations; 401 inode->i_mapping->a_ops = &minix_aops; 402 } else if (S_ISLNK(inode->i_mode)) { 403 inode->i_op = &minix_symlink_inode_operations; 404 inode->i_mapping->a_ops = &minix_aops; 405 } else 406 init_special_inode(inode, inode->i_mode, rdev); 407 } 408 409 /* 410 * The minix V1 function to read an inode. 411 */ 412 static struct inode *V1_minix_iget(struct inode *inode) 413 { 414 struct buffer_head * bh; 415 struct minix_inode * raw_inode; 416 struct minix_inode_info *minix_inode = minix_i(inode); 417 int i; 418 419 raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh); 420 if (!raw_inode) { 421 iget_failed(inode); 422 return ERR_PTR(-EIO); 423 } 424 inode->i_mode = raw_inode->i_mode; 425 inode->i_uid = (uid_t)raw_inode->i_uid; 426 inode->i_gid = (gid_t)raw_inode->i_gid; 427 inode->i_nlink = raw_inode->i_nlinks; 428 inode->i_size = raw_inode->i_size; 429 inode->i_mtime.tv_sec = inode->i_atime.tv_sec = inode->i_ctime.tv_sec = raw_inode->i_time; 430 inode->i_mtime.tv_nsec = 0; 431 inode->i_atime.tv_nsec = 0; 432 inode->i_ctime.tv_nsec = 0; 433 inode->i_blocks = 0; 434 for (i = 0; i < 9; i++) 435 minix_inode->u.i1_data[i] = raw_inode->i_zone[i]; 436 minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0])); 437 brelse(bh); 438 unlock_new_inode(inode); 439 return inode; 440 } 441 442 /* 443 * The minix V2 function to read an inode. 444 */ 445 static struct inode *V2_minix_iget(struct inode *inode) 446 { 447 struct buffer_head * bh; 448 struct minix2_inode * raw_inode; 449 struct minix_inode_info *minix_inode = minix_i(inode); 450 int i; 451 452 raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh); 453 if (!raw_inode) { 454 iget_failed(inode); 455 return ERR_PTR(-EIO); 456 } 457 inode->i_mode = raw_inode->i_mode; 458 inode->i_uid = (uid_t)raw_inode->i_uid; 459 inode->i_gid = (gid_t)raw_inode->i_gid; 460 inode->i_nlink = raw_inode->i_nlinks; 461 inode->i_size = raw_inode->i_size; 462 inode->i_mtime.tv_sec = raw_inode->i_mtime; 463 inode->i_atime.tv_sec = raw_inode->i_atime; 464 inode->i_ctime.tv_sec = raw_inode->i_ctime; 465 inode->i_mtime.tv_nsec = 0; 466 inode->i_atime.tv_nsec = 0; 467 inode->i_ctime.tv_nsec = 0; 468 inode->i_blocks = 0; 469 for (i = 0; i < 10; i++) 470 minix_inode->u.i2_data[i] = raw_inode->i_zone[i]; 471 minix_set_inode(inode, old_decode_dev(raw_inode->i_zone[0])); 472 brelse(bh); 473 unlock_new_inode(inode); 474 return inode; 475 } 476 477 /* 478 * The global function to read an inode. 479 */ 480 struct inode *minix_iget(struct super_block *sb, unsigned long ino) 481 { 482 struct inode *inode; 483 484 inode = iget_locked(sb, ino); 485 if (!inode) 486 return ERR_PTR(-ENOMEM); 487 if (!(inode->i_state & I_NEW)) 488 return inode; 489 490 if (INODE_VERSION(inode) == MINIX_V1) 491 return V1_minix_iget(inode); 492 else 493 return V2_minix_iget(inode); 494 } 495 496 /* 497 * The minix V1 function to synchronize an inode. 498 */ 499 static struct buffer_head * V1_minix_update_inode(struct inode * inode) 500 { 501 struct buffer_head * bh; 502 struct minix_inode * raw_inode; 503 struct minix_inode_info *minix_inode = minix_i(inode); 504 int i; 505 506 raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh); 507 if (!raw_inode) 508 return NULL; 509 raw_inode->i_mode = inode->i_mode; 510 raw_inode->i_uid = fs_high2lowuid(inode->i_uid); 511 raw_inode->i_gid = fs_high2lowgid(inode->i_gid); 512 raw_inode->i_nlinks = inode->i_nlink; 513 raw_inode->i_size = inode->i_size; 514 raw_inode->i_time = inode->i_mtime.tv_sec; 515 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 516 raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); 517 else for (i = 0; i < 9; i++) 518 raw_inode->i_zone[i] = minix_inode->u.i1_data[i]; 519 mark_buffer_dirty(bh); 520 return bh; 521 } 522 523 /* 524 * The minix V2 function to synchronize an inode. 525 */ 526 static struct buffer_head * V2_minix_update_inode(struct inode * inode) 527 { 528 struct buffer_head * bh; 529 struct minix2_inode * raw_inode; 530 struct minix_inode_info *minix_inode = minix_i(inode); 531 int i; 532 533 raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh); 534 if (!raw_inode) 535 return NULL; 536 raw_inode->i_mode = inode->i_mode; 537 raw_inode->i_uid = fs_high2lowuid(inode->i_uid); 538 raw_inode->i_gid = fs_high2lowgid(inode->i_gid); 539 raw_inode->i_nlinks = inode->i_nlink; 540 raw_inode->i_size = inode->i_size; 541 raw_inode->i_mtime = inode->i_mtime.tv_sec; 542 raw_inode->i_atime = inode->i_atime.tv_sec; 543 raw_inode->i_ctime = inode->i_ctime.tv_sec; 544 if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) 545 raw_inode->i_zone[0] = old_encode_dev(inode->i_rdev); 546 else for (i = 0; i < 10; i++) 547 raw_inode->i_zone[i] = minix_inode->u.i2_data[i]; 548 mark_buffer_dirty(bh); 549 return bh; 550 } 551 552 static struct buffer_head *minix_update_inode(struct inode *inode) 553 { 554 if (INODE_VERSION(inode) == MINIX_V1) 555 return V1_minix_update_inode(inode); 556 else 557 return V2_minix_update_inode(inode); 558 } 559 560 static int minix_write_inode(struct inode * inode, int wait) 561 { 562 brelse(minix_update_inode(inode)); 563 return 0; 564 } 565 566 int minix_sync_inode(struct inode * inode) 567 { 568 int err = 0; 569 struct buffer_head *bh; 570 571 bh = minix_update_inode(inode); 572 if (bh && buffer_dirty(bh)) 573 { 574 sync_dirty_buffer(bh); 575 if (buffer_req(bh) && !buffer_uptodate(bh)) 576 { 577 printk("IO error syncing minix inode [%s:%08lx]\n", 578 inode->i_sb->s_id, inode->i_ino); 579 err = -1; 580 } 581 } 582 else if (!bh) 583 err = -1; 584 brelse (bh); 585 return err; 586 } 587 588 int minix_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat) 589 { 590 struct inode *dir = dentry->d_parent->d_inode; 591 struct super_block *sb = dir->i_sb; 592 generic_fillattr(dentry->d_inode, stat); 593 if (INODE_VERSION(dentry->d_inode) == MINIX_V1) 594 stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb); 595 else 596 stat->blocks = (sb->s_blocksize / 512) * V2_minix_blocks(stat->size, sb); 597 stat->blksize = sb->s_blocksize; 598 return 0; 599 } 600 601 /* 602 * The function that is called for file truncation. 603 */ 604 void minix_truncate(struct inode * inode) 605 { 606 if (!(S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))) 607 return; 608 if (INODE_VERSION(inode) == MINIX_V1) 609 V1_minix_truncate(inode); 610 else 611 V2_minix_truncate(inode); 612 } 613 614 static int minix_get_sb(struct file_system_type *fs_type, 615 int flags, const char *dev_name, void *data, struct vfsmount *mnt) 616 { 617 return get_sb_bdev(fs_type, flags, dev_name, data, minix_fill_super, 618 mnt); 619 } 620 621 static struct file_system_type minix_fs_type = { 622 .owner = THIS_MODULE, 623 .name = "minix", 624 .get_sb = minix_get_sb, 625 .kill_sb = kill_block_super, 626 .fs_flags = FS_REQUIRES_DEV, 627 }; 628 629 static int __init init_minix_fs(void) 630 { 631 int err = init_inodecache(); 632 if (err) 633 goto out1; 634 err = register_filesystem(&minix_fs_type); 635 if (err) 636 goto out; 637 return 0; 638 out: 639 destroy_inodecache(); 640 out1: 641 return err; 642 } 643 644 static void __exit exit_minix_fs(void) 645 { 646 unregister_filesystem(&minix_fs_type); 647 destroy_inodecache(); 648 } 649 650 module_init(init_minix_fs) 651 module_exit(exit_minix_fs) 652 MODULE_LICENSE("GPL"); 653 654