Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 7 | * the Free Software Foundation; either version 2 of the License, or |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * (at your option) any later version. |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 9 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 16 | * along with this program; if not, write to the Free Software |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 18 | */ |
| 19 | |
| 20 | #include <linux/fs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/module.h> |
| 22 | #include <linux/parser.h> |
| 23 | #include <linux/completion.h> |
| 24 | #include <linux/vfs.h> |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 25 | #include <linux/mount.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/moduleparam.h> |
Christoph Hellwig | 91dbb4d | 2006-02-15 12:49:04 -0600 | [diff] [blame] | 27 | #include <linux/kthread.h> |
Christoph Hellwig | 9a59f45 | 2005-06-23 00:10:19 -0700 | [diff] [blame] | 28 | #include <linux/posix_acl.h> |
Dave Kleikamp | 115ff50 | 2006-07-26 14:52:13 -0500 | [diff] [blame] | 29 | #include <linux/buffer_head.h> |
Christoph Hellwig | a569425 | 2007-07-17 04:04:28 -0700 | [diff] [blame] | 30 | #include <linux/exportfs.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <asm/uaccess.h> |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 32 | #include <linux/seq_file.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
| 34 | #include "jfs_incore.h" |
| 35 | #include "jfs_filsys.h" |
Dave Kleikamp | 1868f4a | 2005-05-04 15:29:35 -0500 | [diff] [blame] | 36 | #include "jfs_inode.h" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #include "jfs_metapage.h" |
| 38 | #include "jfs_superblock.h" |
| 39 | #include "jfs_dmap.h" |
| 40 | #include "jfs_imap.h" |
| 41 | #include "jfs_acl.h" |
| 42 | #include "jfs_debug.h" |
| 43 | |
| 44 | MODULE_DESCRIPTION("The Journaled Filesystem (JFS)"); |
| 45 | MODULE_AUTHOR("Steve Best/Dave Kleikamp/Barry Arndt, IBM"); |
| 46 | MODULE_LICENSE("GPL"); |
| 47 | |
Christoph Lameter | e18b890 | 2006-12-06 20:33:20 -0800 | [diff] [blame] | 48 | static struct kmem_cache * jfs_inode_cachep; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | |
Josef 'Jeff' Sipek | ee9b6d6 | 2007-02-12 00:55:41 -0800 | [diff] [blame] | 50 | static const struct super_operations jfs_super_operations; |
Christoph Hellwig | 3965516 | 2007-10-21 16:42:17 -0700 | [diff] [blame] | 51 | static const struct export_operations jfs_export_operations; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | static struct file_system_type jfs_fs_type; |
| 53 | |
| 54 | #define MAX_COMMIT_THREADS 64 |
| 55 | static int commit_threads = 0; |
| 56 | module_param(commit_threads, int, 0); |
| 57 | MODULE_PARM_DESC(commit_threads, "Number of commit threads"); |
| 58 | |
Christoph Hellwig | 91dbb4d | 2006-02-15 12:49:04 -0600 | [diff] [blame] | 59 | static struct task_struct *jfsCommitThread[MAX_COMMIT_THREADS]; |
| 60 | struct task_struct *jfsIOthread; |
| 61 | struct task_struct *jfsSyncThread; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
| 63 | #ifdef CONFIG_JFS_DEBUG |
| 64 | int jfsloglevel = JFS_LOGLEVEL_WARN; |
| 65 | module_param(jfsloglevel, int, 0644); |
| 66 | MODULE_PARM_DESC(jfsloglevel, "Specify JFS loglevel (0, 1 or 2)"); |
| 67 | #endif |
| 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | static void jfs_handle_error(struct super_block *sb) |
| 70 | { |
| 71 | struct jfs_sb_info *sbi = JFS_SBI(sb); |
| 72 | |
| 73 | if (sb->s_flags & MS_RDONLY) |
| 74 | return; |
| 75 | |
| 76 | updateSuper(sb, FM_DIRTY); |
| 77 | |
| 78 | if (sbi->flag & JFS_ERR_PANIC) |
| 79 | panic("JFS (device %s): panic forced after error\n", |
| 80 | sb->s_id); |
| 81 | else if (sbi->flag & JFS_ERR_REMOUNT_RO) { |
| 82 | jfs_err("ERROR: (device %s): remounting filesystem " |
| 83 | "as read-only\n", |
| 84 | sb->s_id); |
| 85 | sb->s_flags |= MS_RDONLY; |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 86 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | |
| 88 | /* nothing is done for continue beyond marking the superblock dirty */ |
| 89 | } |
| 90 | |
| 91 | void jfs_error(struct super_block *sb, const char * function, ...) |
| 92 | { |
| 93 | static char error_buf[256]; |
| 94 | va_list args; |
| 95 | |
| 96 | va_start(args, function); |
Alexey Dobriyan | 4a6e617 | 2006-12-06 20:37:04 -0800 | [diff] [blame] | 97 | vsnprintf(error_buf, sizeof(error_buf), function, args); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 98 | va_end(args); |
| 99 | |
| 100 | printk(KERN_ERR "ERROR: (device %s): %s\n", sb->s_id, error_buf); |
| 101 | |
| 102 | jfs_handle_error(sb); |
| 103 | } |
| 104 | |
| 105 | static struct inode *jfs_alloc_inode(struct super_block *sb) |
| 106 | { |
| 107 | struct jfs_inode_info *jfs_inode; |
| 108 | |
| 109 | jfs_inode = kmem_cache_alloc(jfs_inode_cachep, GFP_NOFS); |
| 110 | if (!jfs_inode) |
| 111 | return NULL; |
| 112 | return &jfs_inode->vfs_inode; |
| 113 | } |
| 114 | |
| 115 | static void jfs_destroy_inode(struct inode *inode) |
| 116 | { |
| 117 | struct jfs_inode_info *ji = JFS_IP(inode); |
| 118 | |
Dave Kleikamp | 8a9cd6d | 2005-08-10 11:14:39 -0500 | [diff] [blame] | 119 | BUG_ON(!list_empty(&ji->anon_inode_list)); |
| 120 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 121 | spin_lock_irq(&ji->ag_lock); |
| 122 | if (ji->active_ag != -1) { |
| 123 | struct bmap *bmap = JFS_SBI(inode->i_sb)->bmap; |
| 124 | atomic_dec(&bmap->db_active[ji->active_ag]); |
| 125 | ji->active_ag = -1; |
| 126 | } |
| 127 | spin_unlock_irq(&ji->ag_lock); |
| 128 | |
| 129 | #ifdef CONFIG_JFS_POSIX_ACL |
| 130 | if (ji->i_acl != JFS_ACL_NOT_CACHED) { |
| 131 | posix_acl_release(ji->i_acl); |
| 132 | ji->i_acl = JFS_ACL_NOT_CACHED; |
| 133 | } |
| 134 | if (ji->i_default_acl != JFS_ACL_NOT_CACHED) { |
| 135 | posix_acl_release(ji->i_default_acl); |
| 136 | ji->i_default_acl = JFS_ACL_NOT_CACHED; |
| 137 | } |
| 138 | #endif |
| 139 | |
| 140 | kmem_cache_free(jfs_inode_cachep, ji); |
| 141 | } |
| 142 | |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 143 | static int jfs_statfs(struct dentry *dentry, struct kstatfs *buf) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | { |
David Howells | 726c334 | 2006-06-23 02:02:58 -0700 | [diff] [blame] | 145 | struct jfs_sb_info *sbi = JFS_SBI(dentry->d_sb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 146 | s64 maxinodes; |
| 147 | struct inomap *imap = JFS_IP(sbi->ipimap)->i_imap; |
| 148 | |
| 149 | jfs_info("In jfs_statfs"); |
| 150 | buf->f_type = JFS_SUPER_MAGIC; |
| 151 | buf->f_bsize = sbi->bsize; |
| 152 | buf->f_blocks = sbi->bmap->db_mapsize; |
| 153 | buf->f_bfree = sbi->bmap->db_nfree; |
| 154 | buf->f_bavail = sbi->bmap->db_nfree; |
| 155 | /* |
| 156 | * If we really return the number of allocated & free inodes, some |
| 157 | * applications will fail because they won't see enough free inodes. |
| 158 | * We'll try to calculate some guess as to how may inodes we can |
| 159 | * really allocate |
| 160 | * |
| 161 | * buf->f_files = atomic_read(&imap->im_numinos); |
| 162 | * buf->f_ffree = atomic_read(&imap->im_numfree); |
| 163 | */ |
| 164 | maxinodes = min((s64) atomic_read(&imap->im_numinos) + |
| 165 | ((sbi->bmap->db_nfree >> imap->im_l2nbperiext) |
| 166 | << L2INOSPEREXT), (s64) 0xffffffffLL); |
| 167 | buf->f_files = maxinodes; |
| 168 | buf->f_ffree = maxinodes - (atomic_read(&imap->im_numinos) - |
| 169 | atomic_read(&imap->im_numfree)); |
| 170 | |
| 171 | buf->f_namelen = JFS_NAME_MAX; |
| 172 | return 0; |
| 173 | } |
| 174 | |
| 175 | static void jfs_put_super(struct super_block *sb) |
| 176 | { |
| 177 | struct jfs_sb_info *sbi = JFS_SBI(sb); |
| 178 | int rc; |
| 179 | |
| 180 | jfs_info("In jfs_put_super"); |
| 181 | rc = jfs_umount(sb); |
| 182 | if (rc) |
| 183 | jfs_err("jfs_umount failed with return code %d", rc); |
| 184 | if (sbi->nls_tab) |
| 185 | unload_nls(sbi->nls_tab); |
| 186 | sbi->nls_tab = NULL; |
| 187 | |
Dave Kleikamp | 7fab479 | 2005-05-02 12:25:02 -0600 | [diff] [blame] | 188 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
| 189 | iput(sbi->direct_inode); |
| 190 | sbi->direct_inode = NULL; |
| 191 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 192 | kfree(sbi); |
| 193 | } |
| 194 | |
| 195 | enum { |
| 196 | Opt_integrity, Opt_nointegrity, Opt_iocharset, Opt_resize, |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 197 | Opt_resize_nosize, Opt_errors, Opt_ignore, Opt_err, Opt_quota, |
Dave Kleikamp | 69eb66d | 2006-03-09 13:59:30 -0600 | [diff] [blame] | 198 | Opt_usrquota, Opt_grpquota, Opt_uid, Opt_gid, Opt_umask |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | }; |
| 200 | |
| 201 | static match_table_t tokens = { |
| 202 | {Opt_integrity, "integrity"}, |
| 203 | {Opt_nointegrity, "nointegrity"}, |
| 204 | {Opt_iocharset, "iocharset=%s"}, |
| 205 | {Opt_resize, "resize=%u"}, |
| 206 | {Opt_resize_nosize, "resize"}, |
| 207 | {Opt_errors, "errors=%s"}, |
| 208 | {Opt_ignore, "noquota"}, |
| 209 | {Opt_ignore, "quota"}, |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 210 | {Opt_usrquota, "usrquota"}, |
| 211 | {Opt_grpquota, "grpquota"}, |
Dave Kleikamp | 69eb66d | 2006-03-09 13:59:30 -0600 | [diff] [blame] | 212 | {Opt_uid, "uid=%u"}, |
| 213 | {Opt_gid, "gid=%u"}, |
| 214 | {Opt_umask, "umask=%u"}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | {Opt_err, NULL} |
| 216 | }; |
| 217 | |
| 218 | static int parse_options(char *options, struct super_block *sb, s64 *newLVSize, |
| 219 | int *flag) |
| 220 | { |
| 221 | void *nls_map = (void *)-1; /* -1: no change; NULL: none */ |
| 222 | char *p; |
| 223 | struct jfs_sb_info *sbi = JFS_SBI(sb); |
| 224 | |
| 225 | *newLVSize = 0; |
| 226 | |
| 227 | if (!options) |
| 228 | return 1; |
| 229 | |
| 230 | while ((p = strsep(&options, ",")) != NULL) { |
| 231 | substring_t args[MAX_OPT_ARGS]; |
| 232 | int token; |
| 233 | if (!*p) |
| 234 | continue; |
| 235 | |
| 236 | token = match_token(p, tokens, args); |
| 237 | switch (token) { |
| 238 | case Opt_integrity: |
| 239 | *flag &= ~JFS_NOINTEGRITY; |
| 240 | break; |
| 241 | case Opt_nointegrity: |
| 242 | *flag |= JFS_NOINTEGRITY; |
| 243 | break; |
| 244 | case Opt_ignore: |
| 245 | /* Silently ignore the quota options */ |
| 246 | /* Don't do anything ;-) */ |
| 247 | break; |
| 248 | case Opt_iocharset: |
| 249 | if (nls_map && nls_map != (void *) -1) |
| 250 | unload_nls(nls_map); |
| 251 | if (!strcmp(args[0].from, "none")) |
| 252 | nls_map = NULL; |
| 253 | else { |
| 254 | nls_map = load_nls(args[0].from); |
| 255 | if (!nls_map) { |
| 256 | printk(KERN_ERR |
| 257 | "JFS: charset not found\n"); |
| 258 | goto cleanup; |
| 259 | } |
| 260 | } |
| 261 | break; |
| 262 | case Opt_resize: |
| 263 | { |
| 264 | char *resize = args[0].from; |
| 265 | *newLVSize = simple_strtoull(resize, &resize, 0); |
| 266 | break; |
| 267 | } |
| 268 | case Opt_resize_nosize: |
| 269 | { |
| 270 | *newLVSize = sb->s_bdev->bd_inode->i_size >> |
| 271 | sb->s_blocksize_bits; |
| 272 | if (*newLVSize == 0) |
| 273 | printk(KERN_ERR |
| 274 | "JFS: Cannot determine volume size\n"); |
| 275 | break; |
| 276 | } |
| 277 | case Opt_errors: |
| 278 | { |
| 279 | char *errors = args[0].from; |
| 280 | if (!errors || !*errors) |
| 281 | goto cleanup; |
| 282 | if (!strcmp(errors, "continue")) { |
| 283 | *flag &= ~JFS_ERR_REMOUNT_RO; |
| 284 | *flag &= ~JFS_ERR_PANIC; |
| 285 | *flag |= JFS_ERR_CONTINUE; |
| 286 | } else if (!strcmp(errors, "remount-ro")) { |
| 287 | *flag &= ~JFS_ERR_CONTINUE; |
| 288 | *flag &= ~JFS_ERR_PANIC; |
| 289 | *flag |= JFS_ERR_REMOUNT_RO; |
| 290 | } else if (!strcmp(errors, "panic")) { |
| 291 | *flag &= ~JFS_ERR_CONTINUE; |
| 292 | *flag &= ~JFS_ERR_REMOUNT_RO; |
| 293 | *flag |= JFS_ERR_PANIC; |
| 294 | } else { |
| 295 | printk(KERN_ERR |
| 296 | "JFS: %s is an invalid error handler\n", |
| 297 | errors); |
| 298 | goto cleanup; |
| 299 | } |
| 300 | break; |
| 301 | } |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 302 | |
Dave Kleikamp | 115ff50 | 2006-07-26 14:52:13 -0500 | [diff] [blame] | 303 | #ifdef CONFIG_QUOTA |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 304 | case Opt_quota: |
| 305 | case Opt_usrquota: |
| 306 | *flag |= JFS_USRQUOTA; |
| 307 | break; |
| 308 | case Opt_grpquota: |
| 309 | *flag |= JFS_GRPQUOTA; |
| 310 | break; |
| 311 | #else |
| 312 | case Opt_usrquota: |
| 313 | case Opt_grpquota: |
| 314 | case Opt_quota: |
| 315 | printk(KERN_ERR |
| 316 | "JFS: quota operations not supported\n"); |
| 317 | break; |
| 318 | #endif |
Dave Kleikamp | 69eb66d | 2006-03-09 13:59:30 -0600 | [diff] [blame] | 319 | case Opt_uid: |
| 320 | { |
| 321 | char *uid = args[0].from; |
| 322 | sbi->uid = simple_strtoul(uid, &uid, 0); |
| 323 | break; |
| 324 | } |
| 325 | case Opt_gid: |
| 326 | { |
| 327 | char *gid = args[0].from; |
| 328 | sbi->gid = simple_strtoul(gid, &gid, 0); |
| 329 | break; |
| 330 | } |
| 331 | case Opt_umask: |
| 332 | { |
| 333 | char *umask = args[0].from; |
| 334 | sbi->umask = simple_strtoul(umask, &umask, 8); |
| 335 | if (sbi->umask & ~0777) { |
| 336 | printk(KERN_ERR |
| 337 | "JFS: Invalid value of umask\n"); |
| 338 | goto cleanup; |
| 339 | } |
| 340 | break; |
| 341 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 342 | default: |
| 343 | printk("jfs: Unrecognized mount option \"%s\" " |
| 344 | " or missing value\n", p); |
| 345 | goto cleanup; |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | if (nls_map != (void *) -1) { |
| 350 | /* Discard old (if remount) */ |
| 351 | if (sbi->nls_tab) |
| 352 | unload_nls(sbi->nls_tab); |
| 353 | sbi->nls_tab = nls_map; |
| 354 | } |
| 355 | return 1; |
| 356 | |
| 357 | cleanup: |
| 358 | if (nls_map && nls_map != (void *) -1) |
| 359 | unload_nls(nls_map); |
| 360 | return 0; |
| 361 | } |
| 362 | |
| 363 | static int jfs_remount(struct super_block *sb, int *flags, char *data) |
| 364 | { |
| 365 | s64 newLVSize = 0; |
| 366 | int rc = 0; |
| 367 | int flag = JFS_SBI(sb)->flag; |
| 368 | |
| 369 | if (!parse_options(data, sb, &newLVSize, &flag)) { |
| 370 | return -EINVAL; |
| 371 | } |
| 372 | if (newLVSize) { |
| 373 | if (sb->s_flags & MS_RDONLY) { |
| 374 | printk(KERN_ERR |
| 375 | "JFS: resize requires volume to be mounted read-write\n"); |
| 376 | return -EROFS; |
| 377 | } |
| 378 | rc = jfs_extendfs(sb, newLVSize, 0); |
| 379 | if (rc) |
| 380 | return rc; |
| 381 | } |
| 382 | |
| 383 | if ((sb->s_flags & MS_RDONLY) && !(*flags & MS_RDONLY)) { |
Dave Kleikamp | 7fab479 | 2005-05-02 12:25:02 -0600 | [diff] [blame] | 384 | /* |
| 385 | * Invalidate any previously read metadata. fsck may have |
| 386 | * changed the on-disk data since we mounted r/o |
| 387 | */ |
| 388 | truncate_inode_pages(JFS_SBI(sb)->direct_inode->i_mapping, 0); |
| 389 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | JFS_SBI(sb)->flag = flag; |
| 391 | return jfs_mount_rw(sb, 1); |
| 392 | } |
| 393 | if ((!(sb->s_flags & MS_RDONLY)) && (*flags & MS_RDONLY)) { |
| 394 | rc = jfs_umount_rw(sb); |
| 395 | JFS_SBI(sb)->flag = flag; |
| 396 | return rc; |
| 397 | } |
| 398 | if ((JFS_SBI(sb)->flag & JFS_NOINTEGRITY) != (flag & JFS_NOINTEGRITY)) |
| 399 | if (!(sb->s_flags & MS_RDONLY)) { |
| 400 | rc = jfs_umount_rw(sb); |
| 401 | if (rc) |
| 402 | return rc; |
| 403 | JFS_SBI(sb)->flag = flag; |
| 404 | return jfs_mount_rw(sb, 1); |
| 405 | } |
| 406 | JFS_SBI(sb)->flag = flag; |
| 407 | |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | static int jfs_fill_super(struct super_block *sb, void *data, int silent) |
| 412 | { |
| 413 | struct jfs_sb_info *sbi; |
| 414 | struct inode *inode; |
| 415 | int rc; |
| 416 | s64 newLVSize = 0; |
| 417 | int flag; |
| 418 | |
| 419 | jfs_info("In jfs_read_super: s_flags=0x%lx", sb->s_flags); |
| 420 | |
| 421 | if (!new_valid_dev(sb->s_bdev->bd_dev)) |
| 422 | return -EOVERFLOW; |
| 423 | |
Eric Sesterhenn | 5b3030e | 2006-02-23 09:47:13 -0600 | [diff] [blame] | 424 | sbi = kzalloc(sizeof (struct jfs_sb_info), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 425 | if (!sbi) |
Akinobu Mita | 087387f | 2006-09-14 09:22:38 -0500 | [diff] [blame] | 426 | return -ENOMEM; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | sb->s_fs_info = sbi; |
| 428 | sbi->sb = sb; |
Dave Kleikamp | 69eb66d | 2006-03-09 13:59:30 -0600 | [diff] [blame] | 429 | sbi->uid = sbi->gid = sbi->umask = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | |
| 431 | /* initialize the mount flag and determine the default error handler */ |
| 432 | flag = JFS_ERR_REMOUNT_RO; |
| 433 | |
| 434 | if (!parse_options((char *) data, sb, &newLVSize, &flag)) { |
| 435 | kfree(sbi); |
| 436 | return -EINVAL; |
| 437 | } |
| 438 | sbi->flag = flag; |
| 439 | |
| 440 | #ifdef CONFIG_JFS_POSIX_ACL |
| 441 | sb->s_flags |= MS_POSIXACL; |
| 442 | #endif |
| 443 | |
| 444 | if (newLVSize) { |
| 445 | printk(KERN_ERR "resize option for remount only\n"); |
| 446 | return -EINVAL; |
| 447 | } |
| 448 | |
| 449 | /* |
| 450 | * Initialize blocksize to 4K. |
| 451 | */ |
| 452 | sb_set_blocksize(sb, PSIZE); |
| 453 | |
| 454 | /* |
| 455 | * Set method vectors. |
| 456 | */ |
| 457 | sb->s_op = &jfs_super_operations; |
| 458 | sb->s_export_op = &jfs_export_operations; |
| 459 | |
Dave Kleikamp | 7fab479 | 2005-05-02 12:25:02 -0600 | [diff] [blame] | 460 | /* |
| 461 | * Initialize direct-mapping inode/address-space |
| 462 | */ |
| 463 | inode = new_inode(sb); |
| 464 | if (inode == NULL) |
| 465 | goto out_kfree; |
| 466 | inode->i_ino = 0; |
| 467 | inode->i_nlink = 1; |
| 468 | inode->i_size = sb->s_bdev->bd_inode->i_size; |
| 469 | inode->i_mapping->a_ops = &jfs_metapage_aops; |
Dave Kleikamp | ac17b8b | 2005-10-03 15:32:11 -0500 | [diff] [blame] | 470 | insert_inode_hash(inode); |
Dave Kleikamp | 7fab479 | 2005-05-02 12:25:02 -0600 | [diff] [blame] | 471 | mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS); |
| 472 | |
| 473 | sbi->direct_inode = inode; |
| 474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | rc = jfs_mount(sb); |
| 476 | if (rc) { |
| 477 | if (!silent) { |
| 478 | jfs_err("jfs_mount failed w/return code = %d", rc); |
| 479 | } |
Dave Kleikamp | 7fab479 | 2005-05-02 12:25:02 -0600 | [diff] [blame] | 480 | goto out_mount_failed; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | } |
| 482 | if (sb->s_flags & MS_RDONLY) |
| 483 | sbi->log = NULL; |
| 484 | else { |
| 485 | rc = jfs_mount_rw(sb, 0); |
| 486 | if (rc) { |
| 487 | if (!silent) { |
| 488 | jfs_err("jfs_mount_rw failed, return code = %d", |
| 489 | rc); |
| 490 | } |
| 491 | goto out_no_rw; |
| 492 | } |
| 493 | } |
| 494 | |
| 495 | sb->s_magic = JFS_SUPER_MAGIC; |
| 496 | |
| 497 | inode = iget(sb, ROOT_I); |
| 498 | if (!inode || is_bad_inode(inode)) |
| 499 | goto out_no_root; |
| 500 | sb->s_root = d_alloc_root(inode); |
| 501 | if (!sb->s_root) |
| 502 | goto out_no_root; |
| 503 | |
| 504 | if (sbi->mntflag & JFS_OS2) |
| 505 | sb->s_root->d_op = &jfs_ci_dentry_operations; |
| 506 | |
| 507 | /* logical blocks are represented by 40 bits in pxd_t, etc. */ |
| 508 | sb->s_maxbytes = ((u64) sb->s_blocksize) << 40; |
| 509 | #if BITS_PER_LONG == 32 |
| 510 | /* |
| 511 | * Page cache is indexed by long. |
| 512 | * I would use MAX_LFS_FILESIZE, but it's only half as big |
| 513 | */ |
| 514 | sb->s_maxbytes = min(((u64) PAGE_CACHE_SIZE << 32) - 1, sb->s_maxbytes); |
| 515 | #endif |
| 516 | sb->s_time_gran = 1; |
| 517 | return 0; |
| 518 | |
| 519 | out_no_root: |
| 520 | jfs_err("jfs_read_super: get root inode failed"); |
| 521 | if (inode) |
| 522 | iput(inode); |
| 523 | |
| 524 | out_no_rw: |
| 525 | rc = jfs_umount(sb); |
| 526 | if (rc) { |
| 527 | jfs_err("jfs_umount failed with return code %d", rc); |
| 528 | } |
Dave Kleikamp | 7fab479 | 2005-05-02 12:25:02 -0600 | [diff] [blame] | 529 | out_mount_failed: |
OGAWA Hirofumi | 28fd129 | 2006-01-08 01:02:14 -0800 | [diff] [blame] | 530 | filemap_write_and_wait(sbi->direct_inode->i_mapping); |
Dave Kleikamp | 7fab479 | 2005-05-02 12:25:02 -0600 | [diff] [blame] | 531 | truncate_inode_pages(sbi->direct_inode->i_mapping, 0); |
| 532 | make_bad_inode(sbi->direct_inode); |
| 533 | iput(sbi->direct_inode); |
| 534 | sbi->direct_inode = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 535 | out_kfree: |
| 536 | if (sbi->nls_tab) |
| 537 | unload_nls(sbi->nls_tab); |
| 538 | kfree(sbi); |
| 539 | return -EINVAL; |
| 540 | } |
| 541 | |
| 542 | static void jfs_write_super_lockfs(struct super_block *sb) |
| 543 | { |
| 544 | struct jfs_sb_info *sbi = JFS_SBI(sb); |
| 545 | struct jfs_log *log = sbi->log; |
| 546 | |
| 547 | if (!(sb->s_flags & MS_RDONLY)) { |
| 548 | txQuiesce(sb); |
| 549 | lmLogShutdown(log); |
| 550 | updateSuper(sb, FM_CLEAN); |
| 551 | } |
| 552 | } |
| 553 | |
| 554 | static void jfs_unlockfs(struct super_block *sb) |
| 555 | { |
| 556 | struct jfs_sb_info *sbi = JFS_SBI(sb); |
| 557 | struct jfs_log *log = sbi->log; |
| 558 | int rc = 0; |
| 559 | |
| 560 | if (!(sb->s_flags & MS_RDONLY)) { |
| 561 | updateSuper(sb, FM_MOUNT); |
| 562 | if ((rc = lmLogInit(log))) |
| 563 | jfs_err("jfs_unlock failed with return code %d", rc); |
| 564 | else |
| 565 | txResume(sb); |
| 566 | } |
| 567 | } |
| 568 | |
David Howells | 454e239 | 2006-06-23 02:02:57 -0700 | [diff] [blame] | 569 | static int jfs_get_sb(struct file_system_type *fs_type, |
| 570 | int flags, const char *dev_name, void *data, struct vfsmount *mnt) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | { |
David Howells | 454e239 | 2006-06-23 02:02:57 -0700 | [diff] [blame] | 572 | return get_sb_bdev(fs_type, flags, dev_name, data, jfs_fill_super, |
| 573 | mnt); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | } |
| 575 | |
| 576 | static int jfs_sync_fs(struct super_block *sb, int wait) |
| 577 | { |
| 578 | struct jfs_log *log = JFS_SBI(sb)->log; |
| 579 | |
| 580 | /* log == NULL indicates read-only mount */ |
Dave Kleikamp | 1c62782 | 2005-05-02 12:25:08 -0600 | [diff] [blame] | 581 | if (log) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 582 | jfs_flush_journal(log, wait); |
Dave Kleikamp | cbc3d65 | 2005-07-27 09:17:57 -0500 | [diff] [blame] | 583 | jfs_syncpt(log, 0); |
Dave Kleikamp | 1c62782 | 2005-05-02 12:25:08 -0600 | [diff] [blame] | 584 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 585 | |
| 586 | return 0; |
| 587 | } |
| 588 | |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 589 | static int jfs_show_options(struct seq_file *seq, struct vfsmount *vfs) |
| 590 | { |
| 591 | struct jfs_sb_info *sbi = JFS_SBI(vfs->mnt_sb); |
| 592 | |
Dave Kleikamp | 69eb66d | 2006-03-09 13:59:30 -0600 | [diff] [blame] | 593 | if (sbi->uid != -1) |
| 594 | seq_printf(seq, ",uid=%d", sbi->uid); |
| 595 | if (sbi->gid != -1) |
| 596 | seq_printf(seq, ",gid=%d", sbi->gid); |
| 597 | if (sbi->umask != -1) |
| 598 | seq_printf(seq, ",umask=%03o", sbi->umask); |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 599 | if (sbi->flag & JFS_NOINTEGRITY) |
| 600 | seq_puts(seq, ",nointegrity"); |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 601 | |
Dave Kleikamp | 115ff50 | 2006-07-26 14:52:13 -0500 | [diff] [blame] | 602 | #ifdef CONFIG_QUOTA |
Mark Bellon | 8fc2751 | 2005-09-06 15:16:54 -0700 | [diff] [blame] | 603 | if (sbi->flag & JFS_USRQUOTA) |
| 604 | seq_puts(seq, ",usrquota"); |
| 605 | |
| 606 | if (sbi->flag & JFS_GRPQUOTA) |
| 607 | seq_puts(seq, ",grpquota"); |
| 608 | #endif |
| 609 | |
| 610 | return 0; |
| 611 | } |
| 612 | |
Dave Kleikamp | 115ff50 | 2006-07-26 14:52:13 -0500 | [diff] [blame] | 613 | #ifdef CONFIG_QUOTA |
| 614 | |
| 615 | /* Read data from quotafile - avoid pagecache and such because we cannot afford |
| 616 | * acquiring the locks... As quota files are never truncated and quota code |
| 617 | * itself serializes the operations (and noone else should touch the files) |
| 618 | * we don't have to be afraid of races */ |
| 619 | static ssize_t jfs_quota_read(struct super_block *sb, int type, char *data, |
| 620 | size_t len, loff_t off) |
| 621 | { |
| 622 | struct inode *inode = sb_dqopt(sb)->files[type]; |
| 623 | sector_t blk = off >> sb->s_blocksize_bits; |
| 624 | int err = 0; |
| 625 | int offset = off & (sb->s_blocksize - 1); |
| 626 | int tocopy; |
| 627 | size_t toread; |
| 628 | struct buffer_head tmp_bh; |
| 629 | struct buffer_head *bh; |
| 630 | loff_t i_size = i_size_read(inode); |
| 631 | |
| 632 | if (off > i_size) |
| 633 | return 0; |
| 634 | if (off+len > i_size) |
| 635 | len = i_size-off; |
| 636 | toread = len; |
| 637 | while (toread > 0) { |
| 638 | tocopy = sb->s_blocksize - offset < toread ? |
| 639 | sb->s_blocksize - offset : toread; |
| 640 | |
| 641 | tmp_bh.b_state = 0; |
| 642 | tmp_bh.b_size = 1 << inode->i_blkbits; |
| 643 | err = jfs_get_block(inode, blk, &tmp_bh, 0); |
| 644 | if (err) |
| 645 | return err; |
| 646 | if (!buffer_mapped(&tmp_bh)) /* A hole? */ |
| 647 | memset(data, 0, tocopy); |
| 648 | else { |
| 649 | bh = sb_bread(sb, tmp_bh.b_blocknr); |
| 650 | if (!bh) |
| 651 | return -EIO; |
| 652 | memcpy(data, bh->b_data+offset, tocopy); |
| 653 | brelse(bh); |
| 654 | } |
| 655 | offset = 0; |
| 656 | toread -= tocopy; |
| 657 | data += tocopy; |
| 658 | blk++; |
| 659 | } |
| 660 | return len; |
| 661 | } |
| 662 | |
| 663 | /* Write to quotafile */ |
| 664 | static ssize_t jfs_quota_write(struct super_block *sb, int type, |
| 665 | const char *data, size_t len, loff_t off) |
| 666 | { |
| 667 | struct inode *inode = sb_dqopt(sb)->files[type]; |
| 668 | sector_t blk = off >> sb->s_blocksize_bits; |
| 669 | int err = 0; |
| 670 | int offset = off & (sb->s_blocksize - 1); |
| 671 | int tocopy; |
| 672 | size_t towrite = len; |
| 673 | struct buffer_head tmp_bh; |
| 674 | struct buffer_head *bh; |
| 675 | |
| 676 | mutex_lock(&inode->i_mutex); |
| 677 | while (towrite > 0) { |
| 678 | tocopy = sb->s_blocksize - offset < towrite ? |
| 679 | sb->s_blocksize - offset : towrite; |
| 680 | |
| 681 | tmp_bh.b_state = 0; |
Dave Kleikamp | 8bcb283 | 2006-07-28 08:46:05 -0500 | [diff] [blame] | 682 | tmp_bh.b_size = 1 << inode->i_blkbits; |
Dave Kleikamp | 115ff50 | 2006-07-26 14:52:13 -0500 | [diff] [blame] | 683 | err = jfs_get_block(inode, blk, &tmp_bh, 1); |
| 684 | if (err) |
| 685 | goto out; |
| 686 | if (offset || tocopy != sb->s_blocksize) |
| 687 | bh = sb_bread(sb, tmp_bh.b_blocknr); |
| 688 | else |
| 689 | bh = sb_getblk(sb, tmp_bh.b_blocknr); |
| 690 | if (!bh) { |
| 691 | err = -EIO; |
| 692 | goto out; |
| 693 | } |
| 694 | lock_buffer(bh); |
| 695 | memcpy(bh->b_data+offset, data, tocopy); |
| 696 | flush_dcache_page(bh->b_page); |
| 697 | set_buffer_uptodate(bh); |
| 698 | mark_buffer_dirty(bh); |
| 699 | unlock_buffer(bh); |
| 700 | brelse(bh); |
| 701 | offset = 0; |
| 702 | towrite -= tocopy; |
| 703 | data += tocopy; |
| 704 | blk++; |
| 705 | } |
| 706 | out: |
| 707 | if (len == towrite) |
| 708 | return err; |
| 709 | if (inode->i_size < off+len-towrite) |
| 710 | i_size_write(inode, off+len-towrite); |
| 711 | inode->i_version++; |
| 712 | inode->i_mtime = inode->i_ctime = CURRENT_TIME; |
| 713 | mark_inode_dirty(inode); |
| 714 | mutex_unlock(&inode->i_mutex); |
| 715 | return len - towrite; |
| 716 | } |
| 717 | |
| 718 | #endif |
| 719 | |
Josef 'Jeff' Sipek | ee9b6d6 | 2007-02-12 00:55:41 -0800 | [diff] [blame] | 720 | static const struct super_operations jfs_super_operations = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 721 | .alloc_inode = jfs_alloc_inode, |
| 722 | .destroy_inode = jfs_destroy_inode, |
| 723 | .read_inode = jfs_read_inode, |
| 724 | .dirty_inode = jfs_dirty_inode, |
| 725 | .write_inode = jfs_write_inode, |
| 726 | .delete_inode = jfs_delete_inode, |
| 727 | .put_super = jfs_put_super, |
| 728 | .sync_fs = jfs_sync_fs, |
| 729 | .write_super_lockfs = jfs_write_super_lockfs, |
| 730 | .unlockfs = jfs_unlockfs, |
| 731 | .statfs = jfs_statfs, |
| 732 | .remount_fs = jfs_remount, |
Dave Kleikamp | 115ff50 | 2006-07-26 14:52:13 -0500 | [diff] [blame] | 733 | .show_options = jfs_show_options, |
| 734 | #ifdef CONFIG_QUOTA |
| 735 | .quota_read = jfs_quota_read, |
| 736 | .quota_write = jfs_quota_write, |
| 737 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | }; |
| 739 | |
Christoph Hellwig | 3965516 | 2007-10-21 16:42:17 -0700 | [diff] [blame] | 740 | static const struct export_operations jfs_export_operations = { |
Christoph Hellwig | d425de7 | 2007-10-21 16:42:09 -0700 | [diff] [blame] | 741 | .fh_to_dentry = jfs_fh_to_dentry, |
| 742 | .fh_to_parent = jfs_fh_to_parent, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 743 | .get_parent = jfs_get_parent, |
| 744 | }; |
| 745 | |
| 746 | static struct file_system_type jfs_fs_type = { |
| 747 | .owner = THIS_MODULE, |
| 748 | .name = "jfs", |
| 749 | .get_sb = jfs_get_sb, |
| 750 | .kill_sb = kill_block_super, |
| 751 | .fs_flags = FS_REQUIRES_DEV, |
| 752 | }; |
| 753 | |
Christoph Lameter | 4ba9b9d | 2007-10-16 23:25:51 -0700 | [diff] [blame] | 754 | static void init_once(struct kmem_cache *cachep, void *foo) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | { |
| 756 | struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo; |
| 757 | |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 758 | memset(jfs_ip, 0, sizeof(struct jfs_inode_info)); |
| 759 | INIT_LIST_HEAD(&jfs_ip->anon_inode_list); |
| 760 | init_rwsem(&jfs_ip->rdwrlock); |
| 761 | mutex_init(&jfs_ip->commit_mutex); |
| 762 | init_rwsem(&jfs_ip->xattr_sem); |
| 763 | spin_lock_init(&jfs_ip->ag_lock); |
| 764 | jfs_ip->active_ag = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | #ifdef CONFIG_JFS_POSIX_ACL |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 766 | jfs_ip->i_acl = JFS_ACL_NOT_CACHED; |
| 767 | jfs_ip->i_default_acl = JFS_ACL_NOT_CACHED; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 768 | #endif |
Christoph Lameter | a35afb8 | 2007-05-16 22:10:57 -0700 | [diff] [blame] | 769 | inode_init_once(&jfs_ip->vfs_inode); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 770 | } |
| 771 | |
| 772 | static int __init init_jfs_fs(void) |
| 773 | { |
| 774 | int i; |
| 775 | int rc; |
| 776 | |
| 777 | jfs_inode_cachep = |
Dave Kleikamp | 63f83c9 | 2006-10-02 09:55:27 -0500 | [diff] [blame] | 778 | kmem_cache_create("jfs_ip", sizeof(struct jfs_inode_info), 0, |
Paul Jackson | fffb60f | 2006-03-24 03:16:06 -0800 | [diff] [blame] | 779 | SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD, |
Paul Mundt | 20c2df8 | 2007-07-20 10:11:58 +0900 | [diff] [blame] | 780 | init_once); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | if (jfs_inode_cachep == NULL) |
| 782 | return -ENOMEM; |
| 783 | |
| 784 | /* |
| 785 | * Metapage initialization |
| 786 | */ |
| 787 | rc = metapage_init(); |
| 788 | if (rc) { |
| 789 | jfs_err("metapage_init failed w/rc = %d", rc); |
| 790 | goto free_slab; |
| 791 | } |
| 792 | |
| 793 | /* |
| 794 | * Transaction Manager initialization |
| 795 | */ |
| 796 | rc = txInit(); |
| 797 | if (rc) { |
| 798 | jfs_err("txInit failed w/rc = %d", rc); |
| 799 | goto free_metapage; |
| 800 | } |
| 801 | |
| 802 | /* |
| 803 | * I/O completion thread (endio) |
| 804 | */ |
Christoph Hellwig | 91dbb4d | 2006-02-15 12:49:04 -0600 | [diff] [blame] | 805 | jfsIOthread = kthread_run(jfsIOWait, NULL, "jfsIO"); |
| 806 | if (IS_ERR(jfsIOthread)) { |
| 807 | rc = PTR_ERR(jfsIOthread); |
| 808 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 809 | goto end_txmngr; |
| 810 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 811 | |
| 812 | if (commit_threads < 1) |
| 813 | commit_threads = num_online_cpus(); |
| 814 | if (commit_threads > MAX_COMMIT_THREADS) |
| 815 | commit_threads = MAX_COMMIT_THREADS; |
| 816 | |
| 817 | for (i = 0; i < commit_threads; i++) { |
Christoph Hellwig | 91dbb4d | 2006-02-15 12:49:04 -0600 | [diff] [blame] | 818 | jfsCommitThread[i] = kthread_run(jfs_lazycommit, NULL, "jfsCommit"); |
| 819 | if (IS_ERR(jfsCommitThread[i])) { |
| 820 | rc = PTR_ERR(jfsCommitThread[i]); |
| 821 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 822 | commit_threads = i; |
| 823 | goto kill_committask; |
| 824 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 825 | } |
| 826 | |
Christoph Hellwig | 91dbb4d | 2006-02-15 12:49:04 -0600 | [diff] [blame] | 827 | jfsSyncThread = kthread_run(jfs_sync, NULL, "jfsSync"); |
| 828 | if (IS_ERR(jfsSyncThread)) { |
| 829 | rc = PTR_ERR(jfsSyncThread); |
| 830 | jfs_err("init_jfs_fs: fork failed w/rc = %d", rc); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | goto kill_committask; |
| 832 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 833 | |
| 834 | #ifdef PROC_FS_JFS |
| 835 | jfs_proc_init(); |
| 836 | #endif |
| 837 | |
| 838 | return register_filesystem(&jfs_fs_type); |
| 839 | |
| 840 | kill_committask: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | for (i = 0; i < commit_threads; i++) |
Christoph Hellwig | 91dbb4d | 2006-02-15 12:49:04 -0600 | [diff] [blame] | 842 | kthread_stop(jfsCommitThread[i]); |
| 843 | kthread_stop(jfsIOthread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 844 | end_txmngr: |
| 845 | txExit(); |
| 846 | free_metapage: |
| 847 | metapage_exit(); |
| 848 | free_slab: |
| 849 | kmem_cache_destroy(jfs_inode_cachep); |
| 850 | return rc; |
| 851 | } |
| 852 | |
| 853 | static void __exit exit_jfs_fs(void) |
| 854 | { |
| 855 | int i; |
| 856 | |
| 857 | jfs_info("exit_jfs_fs called"); |
| 858 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 859 | txExit(); |
| 860 | metapage_exit(); |
Christoph Hellwig | 91dbb4d | 2006-02-15 12:49:04 -0600 | [diff] [blame] | 861 | |
| 862 | kthread_stop(jfsIOthread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | for (i = 0; i < commit_threads; i++) |
Christoph Hellwig | 91dbb4d | 2006-02-15 12:49:04 -0600 | [diff] [blame] | 864 | kthread_stop(jfsCommitThread[i]); |
| 865 | kthread_stop(jfsSyncThread); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 866 | #ifdef PROC_FS_JFS |
| 867 | jfs_proc_clean(); |
| 868 | #endif |
| 869 | unregister_filesystem(&jfs_fs_type); |
| 870 | kmem_cache_destroy(jfs_inode_cachep); |
| 871 | } |
| 872 | |
| 873 | module_init(init_jfs_fs) |
| 874 | module_exit(exit_jfs_fs) |