2 * Copyright 2000 by Hans Reiser, licensing governed by reiserfs/README
4 * Trivial changes by Alan Cox to add the LFS fixes
7 * Rights granted to Hans Reiser to redistribute under other terms providing
8 * he accepts all liability including but not limited to patent, fitness
9 * for purpose, and direct or indirect claims arising from failure to perform.
14 #include <linux/config.h>
15 #include <linux/module.h>
16 #include <linux/vmalloc.h>
17 #include <linux/time.h>
18 #include <asm/uaccess.h>
19 #include <linux/reiserfs_fs.h>
20 #include <linux/reiserfs_acl.h>
21 #include <linux/reiserfs_xattr.h>
22 #include <linux/smp_lock.h>
23 #include <linux/init.h>
24 #include <linux/blkdev.h>
25 #include <linux/buffer_head.h>
26 #include <linux/vfs.h>
27 #include <linux/namespace.h>
28 #include <linux/mount.h>
29 #include <linux/namei.h>
30 #include <linux/quotaops.h>
32 struct file_system_type reiserfs_fs_type;
34 static const char reiserfs_3_5_magic_string[] = REISERFS_SUPER_MAGIC_STRING;
35 static const char reiserfs_3_6_magic_string[] = REISER2FS_SUPER_MAGIC_STRING;
36 static const char reiserfs_jr_magic_string[] = REISER2FS_JR_SUPER_MAGIC_STRING;
38 int is_reiserfs_3_5(struct reiserfs_super_block *rs)
40 return !strncmp(rs->s_v1.s_magic, reiserfs_3_5_magic_string,
41 strlen(reiserfs_3_5_magic_string));
44 int is_reiserfs_3_6(struct reiserfs_super_block *rs)
46 return !strncmp(rs->s_v1.s_magic, reiserfs_3_6_magic_string,
47 strlen(reiserfs_3_6_magic_string));
50 int is_reiserfs_jr(struct reiserfs_super_block *rs)
52 return !strncmp(rs->s_v1.s_magic, reiserfs_jr_magic_string,
53 strlen(reiserfs_jr_magic_string));
56 static int is_any_reiserfs_magic_string(struct reiserfs_super_block *rs)
58 return (is_reiserfs_3_5(rs) || is_reiserfs_3_6(rs) ||
62 static int reiserfs_remount(struct super_block *s, int *flags, char *data);
63 static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf);
65 static int reiserfs_sync_fs(struct super_block *s, int wait)
67 if (!(s->s_flags & MS_RDONLY)) {
68 struct reiserfs_transaction_handle th;
69 reiserfs_write_lock(s);
70 if (!journal_begin(&th, s, 1))
71 if (!journal_end_sync(&th, s, 1))
72 reiserfs_flush_old_commits(s);
73 s->s_dirt = 0; /* Even if it's not true.
74 * We'll loop forever in sync_supers otherwise */
75 reiserfs_write_unlock(s);
82 static void reiserfs_write_super(struct super_block *s)
84 reiserfs_sync_fs(s, 1);
87 static void reiserfs_write_super_lockfs(struct super_block *s)
89 struct reiserfs_transaction_handle th;
90 reiserfs_write_lock(s);
91 if (!(s->s_flags & MS_RDONLY)) {
92 int err = journal_begin(&th, s, 1);
94 reiserfs_block_writes(&th);
96 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s),
98 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
99 reiserfs_block_writes(&th);
100 journal_end_sync(&th, s, 1);
104 reiserfs_write_unlock(s);
107 static void reiserfs_unlockfs(struct super_block *s)
109 reiserfs_allow_writes(s);
112 extern const struct in_core_key MAX_IN_CORE_KEY;
114 /* this is used to delete "save link" when there are no items of a
115 file it points to. It can either happen if unlink is completed but
116 "save unlink" removal, or if file has both unlink and truncate
117 pending and as unlink completes first (because key of "save link"
118 protecting unlink is bigger that a key lf "save link" which
119 protects truncate), so there left no items to make truncate
121 static int remove_save_link_only(struct super_block *s,
122 struct reiserfs_key *key, int oid_free)
124 struct reiserfs_transaction_handle th;
127 /* we are going to do one balancing */
128 err = journal_begin(&th, s, JOURNAL_PER_BALANCE_CNT);
132 reiserfs_delete_solid_item(&th, NULL, key);
134 /* removals are protected by direct items */
135 reiserfs_release_objectid(&th, le32_to_cpu(key->k_objectid));
137 return journal_end(&th, s, JOURNAL_PER_BALANCE_CNT);
141 static int reiserfs_quota_on_mount(struct super_block *, int);
144 /* look for uncompleted unlinks and truncates and complete them */
145 static int finish_unfinished(struct super_block *s)
147 INITIALIZE_PATH(path);
148 struct cpu_key max_cpu_key, obj_key;
149 struct reiserfs_key save_link_key;
151 struct item_head *ih;
152 struct buffer_head *bh;
163 /* compose key to look for "save" links */
164 max_cpu_key.version = KEY_FORMAT_3_5;
165 max_cpu_key.on_disk_key.k_dir_id = ~0U;
166 max_cpu_key.on_disk_key.k_objectid = ~0U;
167 set_cpu_key_k_offset(&max_cpu_key, ~0U);
168 max_cpu_key.key_length = 3;
171 /* Needed for iput() to work correctly and not trash data */
172 if (s->s_flags & MS_ACTIVE) {
176 s->s_flags |= MS_ACTIVE;
178 /* Turn on quotas so that they are updated correctly */
179 for (i = 0; i < MAXQUOTAS; i++) {
180 if (REISERFS_SB(s)->s_qf_names[i]) {
181 int ret = reiserfs_quota_on_mount(s, i);
184 "reiserfs: cannot turn on journalled quota: error %d",
191 REISERFS_SB(s)->s_is_unlinked_ok = 1;
193 retval = search_item(s, &max_cpu_key, &path);
194 if (retval != ITEM_NOT_FOUND) {
196 "vs-2140: finish_unfinished: search_by_key returned %d",
201 bh = get_last_bh(&path);
202 item_pos = get_item_pos(&path);
203 if (item_pos != B_NR_ITEMS(bh)) {
205 "vs-2060: finish_unfinished: wrong position found");
209 ih = B_N_PITEM_HEAD(bh, item_pos);
211 if (le32_to_cpu(ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID)
212 /* there are no "save" links anymore */
215 save_link_key = ih->ih_key;
216 if (is_indirect_le_ih(ih))
221 /* reiserfs_iget needs k_dirid and k_objectid only */
222 item = B_I_PITEM(bh, ih);
223 obj_key.on_disk_key.k_dir_id = le32_to_cpu(*(__le32 *) item);
224 obj_key.on_disk_key.k_objectid =
225 le32_to_cpu(ih->ih_key.k_objectid);
226 obj_key.on_disk_key.k_offset = 0;
227 obj_key.on_disk_key.k_type = 0;
231 inode = reiserfs_iget(s, &obj_key);
233 /* the unlink almost completed, it just did not manage to remove
234 "save" link and release objectid */
236 "vs-2180: finish_unfinished: iget failed for %K",
238 retval = remove_save_link_only(s, &save_link_key, 1);
242 if (!truncate && inode->i_nlink) {
243 /* file is not unlinked */
245 "vs-2185: finish_unfinished: file %K is not unlinked",
247 retval = remove_save_link_only(s, &save_link_key, 0);
252 if (truncate && S_ISDIR(inode->i_mode)) {
253 /* We got a truncate request for a dir which is impossible.
254 The only imaginable way is to execute unfinished truncate request
255 then boot into old kernel, remove the file and create dir with
258 "green-2101: impossible truncate on a directory %k. Please report",
260 retval = remove_save_link_only(s, &save_link_key, 0);
267 REISERFS_I(inode)->i_flags |=
268 i_link_saved_truncate_mask;
269 /* not completed truncate found. New size was committed together
271 reiserfs_info(s, "Truncating %k to %Ld ..",
272 INODE_PKEY(inode), inode->i_size);
273 reiserfs_truncate_file(inode,
275 /*don't update modification time */
277 retval = remove_save_link(inode, truncate);
279 REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask;
280 /* not completed unlink (rmdir) found */
281 reiserfs_info(s, "Removing %k..", INODE_PKEY(inode));
282 /* removal gets completed in iput */
290 REISERFS_SB(s)->s_is_unlinked_ok = 0;
293 /* Turn quotas off */
294 for (i = 0; i < MAXQUOTAS; i++) {
295 if (sb_dqopt(s)->files[i])
296 vfs_quota_off_mount(s, i);
299 /* Restore the flag back */
300 s->s_flags &= ~MS_ACTIVE;
304 reiserfs_info(s, "There were %d uncompleted unlinks/truncates. "
305 "Completed\n", done);
309 /* to protect file being unlinked from getting lost we "safe" link files
310 being unlinked. This link will be deleted in the same transaction with last
311 item of file. mounting the filesytem we scan all these links and remove
312 files which almost got lost */
313 void add_save_link(struct reiserfs_transaction_handle *th,
314 struct inode *inode, int truncate)
316 INITIALIZE_PATH(path);
322 BUG_ON(!th->t_trans_id);
324 /* file can only get one "save link" of each kind */
326 (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask),
327 "saved link already exists for truncated inode %lx",
330 (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask),
331 "saved link already exists for unlinked inode %lx",
334 /* setup key of "save" link */
335 key.version = KEY_FORMAT_3_5;
336 key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID;
337 key.on_disk_key.k_objectid = inode->i_ino;
339 /* unlink, rmdir, rename */
340 set_cpu_key_k_offset(&key, 1 + inode->i_sb->s_blocksize);
341 set_cpu_key_k_type(&key, TYPE_DIRECT);
343 /* item head of "safe" link */
344 make_le_item_head(&ih, &key, key.version,
345 1 + inode->i_sb->s_blocksize, TYPE_DIRECT,
346 4 /*length */ , 0xffff /*free space */ );
349 if (S_ISDIR(inode->i_mode))
350 reiserfs_warning(inode->i_sb,
351 "green-2102: Adding a truncate savelink for a directory %k! Please report",
353 set_cpu_key_k_offset(&key, 1);
354 set_cpu_key_k_type(&key, TYPE_INDIRECT);
356 /* item head of "safe" link */
357 make_le_item_head(&ih, &key, key.version, 1, TYPE_INDIRECT,
358 4 /*length */ , 0 /*free space */ );
362 /* look for its place in the tree */
363 retval = search_item(inode->i_sb, &key, &path);
364 if (retval != ITEM_NOT_FOUND) {
365 if (retval != -ENOSPC)
366 reiserfs_warning(inode->i_sb, "vs-2100: add_save_link:"
367 "search_by_key (%K) returned %d", &key,
373 /* body of "save" link */
374 link = INODE_PKEY(inode)->k_dir_id;
376 /* put "save" link inot tree, don't charge quota to anyone */
378 reiserfs_insert_item(th, &path, &key, &ih, NULL, (char *)&link);
380 if (retval != -ENOSPC)
381 reiserfs_warning(inode->i_sb,
382 "vs-2120: add_save_link: insert_item returned %d",
386 REISERFS_I(inode)->i_flags |=
387 i_link_saved_truncate_mask;
389 REISERFS_I(inode)->i_flags |= i_link_saved_unlink_mask;
393 /* this opens transaction unlike add_save_link */
394 int remove_save_link(struct inode *inode, int truncate)
396 struct reiserfs_transaction_handle th;
397 struct reiserfs_key key;
400 /* we are going to do one balancing only */
401 err = journal_begin(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
405 /* setup key of "save" link */
406 key.k_dir_id = cpu_to_le32(MAX_KEY_OBJECTID);
407 key.k_objectid = INODE_PKEY(inode)->k_objectid;
409 /* unlink, rmdir, rename */
410 set_le_key_k_offset(KEY_FORMAT_3_5, &key,
411 1 + inode->i_sb->s_blocksize);
412 set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_DIRECT);
415 set_le_key_k_offset(KEY_FORMAT_3_5, &key, 1);
416 set_le_key_k_type(KEY_FORMAT_3_5, &key, TYPE_INDIRECT);
420 (REISERFS_I(inode)->i_flags & i_link_saved_truncate_mask)) ||
422 (REISERFS_I(inode)->i_flags & i_link_saved_unlink_mask)))
423 /* don't take quota bytes from anywhere */
424 reiserfs_delete_solid_item(&th, NULL, &key);
426 reiserfs_release_objectid(&th, inode->i_ino);
427 REISERFS_I(inode)->i_flags &= ~i_link_saved_unlink_mask;
429 REISERFS_I(inode)->i_flags &= ~i_link_saved_truncate_mask;
431 return journal_end(&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
434 static void reiserfs_put_super(struct super_block *s)
437 struct reiserfs_transaction_handle th;
440 if (REISERFS_SB(s)->xattr_root) {
441 d_invalidate(REISERFS_SB(s)->xattr_root);
442 dput(REISERFS_SB(s)->xattr_root);
445 if (REISERFS_SB(s)->priv_root) {
446 d_invalidate(REISERFS_SB(s)->priv_root);
447 dput(REISERFS_SB(s)->priv_root);
450 /* change file system state to current state if it was mounted with read-write permissions */
451 if (!(s->s_flags & MS_RDONLY)) {
452 if (!journal_begin(&th, s, 10)) {
453 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s),
455 set_sb_umount_state(SB_DISK_SUPER_BLOCK(s),
456 REISERFS_SB(s)->s_mount_state);
457 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
461 /* note, journal_release checks for readonly mount, and can decide not
462 ** to do a journal_end
464 journal_release(&th, s);
466 for (i = 0; i < SB_BMAP_NR(s); i++)
467 brelse(SB_AP_BITMAP(s)[i].bh);
469 vfree(SB_AP_BITMAP(s));
471 brelse(SB_BUFFER_WITH_SB(s));
475 if (REISERFS_SB(s)->reserved_blocks != 0) {
477 "green-2005: reiserfs_put_super: reserved blocks left %d",
478 REISERFS_SB(s)->reserved_blocks);
481 reiserfs_proc_info_done(s);
489 static kmem_cache_t *reiserfs_inode_cachep;
491 static struct inode *reiserfs_alloc_inode(struct super_block *sb)
493 struct reiserfs_inode_info *ei;
494 ei = (struct reiserfs_inode_info *)
495 kmem_cache_alloc(reiserfs_inode_cachep, SLAB_KERNEL);
498 return &ei->vfs_inode;
501 static void reiserfs_destroy_inode(struct inode *inode)
503 kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode));
506 static void init_once(void *foo, kmem_cache_t * cachep, unsigned long flags)
508 struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *)foo;
510 if ((flags & (SLAB_CTOR_VERIFY | SLAB_CTOR_CONSTRUCTOR)) ==
511 SLAB_CTOR_CONSTRUCTOR) {
512 INIT_LIST_HEAD(&ei->i_prealloc_list);
513 inode_init_once(&ei->vfs_inode);
514 ei->i_acl_access = NULL;
515 ei->i_acl_default = NULL;
519 static int init_inodecache(void)
521 reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache",
523 reiserfs_inode_info),
524 0, (SLAB_RECLAIM_ACCOUNT|
527 if (reiserfs_inode_cachep == NULL)
532 static void destroy_inodecache(void)
534 if (kmem_cache_destroy(reiserfs_inode_cachep))
535 reiserfs_warning(NULL,
536 "reiserfs_inode_cache: not all structures were freed");
539 /* we don't mark inodes dirty, we just log them */
540 static void reiserfs_dirty_inode(struct inode *inode)
542 struct reiserfs_transaction_handle th;
545 if (inode->i_sb->s_flags & MS_RDONLY) {
546 reiserfs_warning(inode->i_sb,
547 "clm-6006: writing inode %lu on readonly FS",
551 reiserfs_write_lock(inode->i_sb);
553 /* this is really only used for atime updates, so they don't have
554 ** to be included in O_SYNC or fsync
556 err = journal_begin(&th, inode->i_sb, 1);
558 reiserfs_write_unlock(inode->i_sb);
561 reiserfs_update_sd(&th, inode);
562 journal_end(&th, inode->i_sb, 1);
563 reiserfs_write_unlock(inode->i_sb);
566 static void reiserfs_clear_inode(struct inode *inode)
568 struct posix_acl *acl;
570 acl = REISERFS_I(inode)->i_acl_access;
571 if (acl && !IS_ERR(acl))
572 posix_acl_release(acl);
573 REISERFS_I(inode)->i_acl_access = NULL;
575 acl = REISERFS_I(inode)->i_acl_default;
576 if (acl && !IS_ERR(acl))
577 posix_acl_release(acl);
578 REISERFS_I(inode)->i_acl_default = NULL;
582 static ssize_t reiserfs_quota_write(struct super_block *, int, const char *,
584 static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t,
588 static struct super_operations reiserfs_sops = {
589 .alloc_inode = reiserfs_alloc_inode,
590 .destroy_inode = reiserfs_destroy_inode,
591 .write_inode = reiserfs_write_inode,
592 .dirty_inode = reiserfs_dirty_inode,
593 .delete_inode = reiserfs_delete_inode,
594 .clear_inode = reiserfs_clear_inode,
595 .put_super = reiserfs_put_super,
596 .write_super = reiserfs_write_super,
597 .sync_fs = reiserfs_sync_fs,
598 .write_super_lockfs = reiserfs_write_super_lockfs,
599 .unlockfs = reiserfs_unlockfs,
600 .statfs = reiserfs_statfs,
601 .remount_fs = reiserfs_remount,
603 .quota_read = reiserfs_quota_read,
604 .quota_write = reiserfs_quota_write,
609 #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group")
611 static int reiserfs_dquot_initialize(struct inode *, int);
612 static int reiserfs_dquot_drop(struct inode *);
613 static int reiserfs_write_dquot(struct dquot *);
614 static int reiserfs_acquire_dquot(struct dquot *);
615 static int reiserfs_release_dquot(struct dquot *);
616 static int reiserfs_mark_dquot_dirty(struct dquot *);
617 static int reiserfs_write_info(struct super_block *, int);
618 static int reiserfs_quota_on(struct super_block *, int, int, char *);
620 static struct dquot_operations reiserfs_quota_operations = {
621 .initialize = reiserfs_dquot_initialize,
622 .drop = reiserfs_dquot_drop,
623 .alloc_space = dquot_alloc_space,
624 .alloc_inode = dquot_alloc_inode,
625 .free_space = dquot_free_space,
626 .free_inode = dquot_free_inode,
627 .transfer = dquot_transfer,
628 .write_dquot = reiserfs_write_dquot,
629 .acquire_dquot = reiserfs_acquire_dquot,
630 .release_dquot = reiserfs_release_dquot,
631 .mark_dirty = reiserfs_mark_dquot_dirty,
632 .write_info = reiserfs_write_info,
635 static struct quotactl_ops reiserfs_qctl_operations = {
636 .quota_on = reiserfs_quota_on,
637 .quota_off = vfs_quota_off,
638 .quota_sync = vfs_quota_sync,
639 .get_info = vfs_get_dqinfo,
640 .set_info = vfs_set_dqinfo,
641 .get_dqblk = vfs_get_dqblk,
642 .set_dqblk = vfs_set_dqblk,
646 static struct export_operations reiserfs_export_ops = {
647 .encode_fh = reiserfs_encode_fh,
648 .decode_fh = reiserfs_decode_fh,
649 .get_parent = reiserfs_get_parent,
650 .get_dentry = reiserfs_get_dentry,
653 /* this struct is used in reiserfs_getopt () for containing the value for those
654 mount options that have values rather than being toggles. */
657 int setmask; /* bitmask which is to set on mount_options bitmask when this
658 value is found, 0 is no bits are to be changed. */
659 int clrmask; /* bitmask which is to clear on mount_options bitmask when this
660 value is found, 0 is no bits are to be changed. This is
661 applied BEFORE setmask */
664 /* Set this bit in arg_required to allow empty arguments */
665 #define REISERFS_OPT_ALLOWEMPTY 31
667 /* this struct is used in reiserfs_getopt() for describing the set of reiserfs
671 int arg_required; /* 0 if argument is not required, not 0 otherwise */
672 const arg_desc_t *values; /* list of values accepted by an option */
673 int setmask; /* bitmask which is to set on mount_options bitmask when this
674 value is found, 0 is no bits are to be changed. */
675 int clrmask; /* bitmask which is to clear on mount_options bitmask when this
676 value is found, 0 is no bits are to be changed. This is
677 applied BEFORE setmask */
680 /* possible values for -o data= */
681 static const arg_desc_t logging_mode[] = {
682 {"ordered", 1 << REISERFS_DATA_ORDERED,
683 (1 << REISERFS_DATA_LOG | 1 << REISERFS_DATA_WRITEBACK)},
684 {"journal", 1 << REISERFS_DATA_LOG,
685 (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_WRITEBACK)},
686 {"writeback", 1 << REISERFS_DATA_WRITEBACK,
687 (1 << REISERFS_DATA_ORDERED | 1 << REISERFS_DATA_LOG)},
691 /* possible values for -o barrier= */
692 static const arg_desc_t barrier_mode[] = {
693 {"none", 1 << REISERFS_BARRIER_NONE, 1 << REISERFS_BARRIER_FLUSH},
694 {"flush", 1 << REISERFS_BARRIER_FLUSH, 1 << REISERFS_BARRIER_NONE},
698 /* possible values for "-o block-allocator=" and bits which are to be set in
699 s_mount_opt of reiserfs specific part of in-core super block */
700 static const arg_desc_t balloc[] = {
701 {"noborder", 1 << REISERFS_NO_BORDER, 0},
702 {"border", 0, 1 << REISERFS_NO_BORDER},
703 {"no_unhashed_relocation", 1 << REISERFS_NO_UNHASHED_RELOCATION, 0},
704 {"hashed_relocation", 1 << REISERFS_HASHED_RELOCATION, 0},
705 {"test4", 1 << REISERFS_TEST4, 0},
706 {"notest4", 0, 1 << REISERFS_TEST4},
710 static const arg_desc_t tails[] = {
711 {"on", 1 << REISERFS_LARGETAIL, 1 << REISERFS_SMALLTAIL},
712 {"off", 0, (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)},
713 {"small", 1 << REISERFS_SMALLTAIL, 1 << REISERFS_LARGETAIL},
717 static const arg_desc_t error_actions[] = {
718 {"panic", 1 << REISERFS_ERROR_PANIC,
719 (1 << REISERFS_ERROR_RO | 1 << REISERFS_ERROR_CONTINUE)},
720 {"ro-remount", 1 << REISERFS_ERROR_RO,
721 (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_CONTINUE)},
722 #ifdef REISERFS_JOURNAL_ERROR_ALLOWS_NO_LOG
723 {"continue", 1 << REISERFS_ERROR_CONTINUE,
724 (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_RO)},
729 int reiserfs_default_io_size = 128 * 1024; /* Default recommended I/O size is 128k.
730 There might be broken applications that are
731 confused by this. Use nolargeio mount option
732 to get usual i/o size = PAGE_SIZE.
735 /* proceed only one option from a list *cur - string containing of mount options
736 opts - array of options which are accepted
737 opt_arg - if option is found and requires an argument and if it is specifed
738 in the input - pointer to the argument is stored here
739 bit_flags - if option requires to set a certain bit - it is set here
740 return -1 if unknown option is found, opt->arg_required otherwise */
741 static int reiserfs_getopt(struct super_block *s, char **cur, opt_desc_t * opts,
742 char **opt_arg, unsigned long *bit_flags)
751 const opt_desc_t *opt;
752 const arg_desc_t *arg;
756 /* assume argument cannot contain commas */
757 *cur = strchr(p, ',');
763 if (!strncmp(p, "alloc=", 6)) {
764 /* Ugly special case, probably we should redo options parser so that
765 it can understand several arguments for some options, also so that
766 it can fill several bitfields with option values. */
767 if (reiserfs_parse_alloc_options(s, p + 6)) {
774 /* for every option in the list */
775 for (opt = opts; opt->option_name; opt++) {
776 if (!strncmp(p, opt->option_name, strlen(opt->option_name))) {
779 (1 << REISERFS_UNSUPPORTED_OPT))
780 reiserfs_warning(s, "%s not supported.",
783 *bit_flags &= ~opt->clrmask;
785 (1 << REISERFS_UNSUPPORTED_OPT))
786 reiserfs_warning(s, "%s not supported.",
789 *bit_flags |= opt->setmask;
794 if (!opt->option_name) {
795 reiserfs_warning(s, "unknown mount option \"%s\"", p);
799 p += strlen(opt->option_name);
802 if (!opt->arg_required) {
804 "the option \"%s\" does not require an argument",
811 if (opt->arg_required) {
813 "the option \"%s\" requires an argument",
819 reiserfs_warning(s, "head of option \"%s\" is only correct",
824 /* move to the argument, or to next option if argument is not required */
827 if (opt->arg_required
828 && !(opt->arg_required & (1 << REISERFS_OPT_ALLOWEMPTY))
830 /* this catches "option=," if not allowed */
831 reiserfs_warning(s, "empty argument for \"%s\"",
837 /* *=NULLopt_arg contains pointer to argument */
839 return opt->arg_required & ~(1 << REISERFS_OPT_ALLOWEMPTY);
842 /* values possible for this option are listed in opt->values */
843 for (arg = opt->values; arg->value; arg++) {
844 if (!strcmp(p, arg->value)) {
846 *bit_flags &= ~arg->clrmask;
847 *bit_flags |= arg->setmask;
849 return opt->arg_required;
853 reiserfs_warning(s, "bad value \"%s\" for option \"%s\"", p,
858 /* returns 0 if something is wrong in option string, 1 - otherwise */
859 static int reiserfs_parse_options(struct super_block *s, char *options, /* string given via mount's -o */
860 unsigned long *mount_options,
861 /* after the parsing phase, contains the
862 collection of bitflags defining what
863 mount options were selected. */
864 unsigned long *blocks, /* strtol-ed from NNN of resize=NNN */
866 unsigned int *commit_max_age)
871 opt_desc_t opts[] = {
872 /* Compatibility stuff, so that -o notail for old setups still work */
873 {"tails",.arg_required = 't',.values = tails},
875 (1 << REISERFS_LARGETAIL) | (1 << REISERFS_SMALLTAIL)},
876 {"conv",.setmask = 1 << REISERFS_CONVERT},
877 {"attrs",.setmask = 1 << REISERFS_ATTRS},
878 {"noattrs",.clrmask = 1 << REISERFS_ATTRS},
879 #ifdef CONFIG_REISERFS_FS_XATTR
880 {"user_xattr",.setmask = 1 << REISERFS_XATTRS_USER},
881 {"nouser_xattr",.clrmask = 1 << REISERFS_XATTRS_USER},
883 {"user_xattr",.setmask = 1 << REISERFS_UNSUPPORTED_OPT},
884 {"nouser_xattr",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT},
886 #ifdef CONFIG_REISERFS_FS_POSIX_ACL
887 {"acl",.setmask = 1 << REISERFS_POSIXACL},
888 {"noacl",.clrmask = 1 << REISERFS_POSIXACL},
890 {"acl",.setmask = 1 << REISERFS_UNSUPPORTED_OPT},
891 {"noacl",.clrmask = 1 << REISERFS_UNSUPPORTED_OPT},
893 {.option_name = "nolog"},
894 {"replayonly",.setmask = 1 << REPLAYONLY},
895 {"block-allocator",.arg_required = 'a',.values = balloc},
896 {"data",.arg_required = 'd',.values = logging_mode},
897 {"barrier",.arg_required = 'b',.values = barrier_mode},
898 {"resize",.arg_required = 'r',.values = NULL},
899 {"jdev",.arg_required = 'j',.values = NULL},
900 {"nolargeio",.arg_required = 'w',.values = NULL},
901 {"commit",.arg_required = 'c',.values = NULL},
902 {"usrquota",.setmask = 1 << REISERFS_QUOTA},
903 {"grpquota",.setmask = 1 << REISERFS_QUOTA},
904 {"noquota",.clrmask = 1 << REISERFS_QUOTA},
905 {"errors",.arg_required = 'e',.values = error_actions},
906 {"usrjquota",.arg_required =
907 'u' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL},
908 {"grpjquota",.arg_required =
909 'g' | (1 << REISERFS_OPT_ALLOWEMPTY),.values = NULL},
910 {"jqfmt",.arg_required = 'f',.values = NULL},
911 {.option_name = NULL}
915 if (!options || !*options)
916 /* use default configuration: create tails, journaling on, no
917 conversion to newest format */
920 for (pos = options; pos;) {
921 c = reiserfs_getopt(s, &pos, opts, &arg, mount_options);
923 /* wrong option is given */
930 /* "resize=NNN" or "resize=auto" */
932 if (!strcmp(arg, "auto")) {
933 /* From JFS code, to auto-get the size. */
935 s->s_bdev->bd_inode->i_size >> s->
938 *blocks = simple_strtoul(arg, &p, 0);
940 /* NNN does not look like a number */
942 "reiserfs_parse_options: bad value %s",
951 unsigned long val = simple_strtoul(arg, &p, 0);
952 /* commit=NNN (time in seconds) */
953 if (*p != '\0' || val >= (unsigned int)-1) {
955 "reiserfs_parse_options: bad value %s",
959 *commit_max_age = (unsigned int)val;
964 int val = simple_strtoul(arg, &p, 0);
968 "reiserfs_parse_options: non-numeric value %s for nolargeio option",
973 reiserfs_default_io_size = PAGE_SIZE;
975 reiserfs_default_io_size = 128 * 1024;
979 if (arg && *arg && jdev_name) {
980 if (*jdev_name) { //Hm, already assigned?
982 "reiserfs_parse_options: journal device was already specified to be %s",
990 if (c == 'u' || c == 'g') {
991 int qtype = c == 'u' ? USRQUOTA : GRPQUOTA;
993 if (sb_any_quota_enabled(s)) {
995 "reiserfs_parse_options: cannot change journalled quota options when quota turned on.");
998 if (*arg) { /* Some filename specified? */
999 if (REISERFS_SB(s)->s_qf_names[qtype]
1000 && strcmp(REISERFS_SB(s)->s_qf_names[qtype],
1003 "reiserfs_parse_options: %s quota file already specified.",
1007 if (strchr(arg, '/')) {
1009 "reiserfs_parse_options: quotafile must be on filesystem root.");
1012 REISERFS_SB(s)->s_qf_names[qtype] =
1013 kmalloc(strlen(arg) + 1, GFP_KERNEL);
1014 if (!REISERFS_SB(s)->s_qf_names[qtype]) {
1016 "reiserfs_parse_options: not enough memory for storing quotafile name.");
1019 strcpy(REISERFS_SB(s)->s_qf_names[qtype], arg);
1020 *mount_options |= 1 << REISERFS_QUOTA;
1022 kfree(REISERFS_SB(s)->s_qf_names[qtype]);
1023 REISERFS_SB(s)->s_qf_names[qtype] = NULL;
1027 if (!strcmp(arg, "vfsold"))
1028 REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_OLD;
1029 else if (!strcmp(arg, "vfsv0"))
1030 REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_V0;
1033 "reiserfs_parse_options: unknown quota format specified.");
1038 if (c == 'u' || c == 'g' || c == 'f') {
1040 "reiserfs_parse_options: journalled quota options not supported.");
1047 if (!REISERFS_SB(s)->s_jquota_fmt
1048 && (REISERFS_SB(s)->s_qf_names[USRQUOTA]
1049 || REISERFS_SB(s)->s_qf_names[GRPQUOTA])) {
1051 "reiserfs_parse_options: journalled quota format not specified.");
1054 /* This checking is not precise wrt the quota type but for our purposes it is sufficient */
1055 if (!(*mount_options & (1 << REISERFS_QUOTA))
1056 && sb_any_quota_enabled(s)) {
1058 "reiserfs_parse_options: quota options must be present when quota is turned on.");
1066 static void switch_data_mode(struct super_block *s, unsigned long mode)
1068 REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) |
1069 (1 << REISERFS_DATA_ORDERED) |
1070 (1 << REISERFS_DATA_WRITEBACK));
1071 REISERFS_SB(s)->s_mount_opt |= (1 << mode);
1074 static void handle_data_mode(struct super_block *s, unsigned long mount_options)
1076 if (mount_options & (1 << REISERFS_DATA_LOG)) {
1077 if (!reiserfs_data_log(s)) {
1078 switch_data_mode(s, REISERFS_DATA_LOG);
1079 reiserfs_info(s, "switching to journaled data mode\n");
1081 } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) {
1082 if (!reiserfs_data_ordered(s)) {
1083 switch_data_mode(s, REISERFS_DATA_ORDERED);
1084 reiserfs_info(s, "switching to ordered data mode\n");
1086 } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) {
1087 if (!reiserfs_data_writeback(s)) {
1088 switch_data_mode(s, REISERFS_DATA_WRITEBACK);
1089 reiserfs_info(s, "switching to writeback data mode\n");
1094 static void handle_barrier_mode(struct super_block *s, unsigned long bits)
1096 int flush = (1 << REISERFS_BARRIER_FLUSH);
1097 int none = (1 << REISERFS_BARRIER_NONE);
1098 int all_barrier = flush | none;
1100 if (bits & all_barrier) {
1101 REISERFS_SB(s)->s_mount_opt &= ~all_barrier;
1103 REISERFS_SB(s)->s_mount_opt |= flush;
1104 printk("reiserfs: enabling write barrier flush mode\n");
1105 } else if (bits & none) {
1106 REISERFS_SB(s)->s_mount_opt |= none;
1107 printk("reiserfs: write barriers turned off\n");
1112 static void handle_attrs(struct super_block *s)
1114 struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s);
1116 if (reiserfs_attrs(s)) {
1117 if (old_format_only(s)) {
1119 "reiserfs: cannot support attributes on 3.5.x disk format");
1120 REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS);
1123 if (!(le32_to_cpu(rs->s_flags) & reiserfs_attrs_cleared)) {
1125 "reiserfs: cannot support attributes until flag is set in super-block");
1126 REISERFS_SB(s)->s_mount_opt &= ~(1 << REISERFS_ATTRS);
1131 static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
1133 struct reiserfs_super_block *rs;
1134 struct reiserfs_transaction_handle th;
1135 unsigned long blocks;
1136 unsigned long mount_options = REISERFS_SB(s)->s_mount_opt;
1137 unsigned long safe_mask = 0;
1138 unsigned int commit_max_age = (unsigned int)-1;
1139 struct reiserfs_journal *journal = SB_JOURNAL(s);
1145 rs = SB_DISK_SUPER_BLOCK(s);
1147 if (!reiserfs_parse_options
1148 (s, arg, &mount_options, &blocks, NULL, &commit_max_age)) {
1150 for (i = 0; i < MAXQUOTAS; i++) {
1151 kfree(REISERFS_SB(s)->s_qf_names[i]);
1152 REISERFS_SB(s)->s_qf_names[i] = NULL;
1160 /* Add options that are safe here */
1161 safe_mask |= 1 << REISERFS_SMALLTAIL;
1162 safe_mask |= 1 << REISERFS_LARGETAIL;
1163 safe_mask |= 1 << REISERFS_NO_BORDER;
1164 safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION;
1165 safe_mask |= 1 << REISERFS_HASHED_RELOCATION;
1166 safe_mask |= 1 << REISERFS_TEST4;
1167 safe_mask |= 1 << REISERFS_ATTRS;
1168 safe_mask |= 1 << REISERFS_XATTRS_USER;
1169 safe_mask |= 1 << REISERFS_POSIXACL;
1170 safe_mask |= 1 << REISERFS_BARRIER_FLUSH;
1171 safe_mask |= 1 << REISERFS_BARRIER_NONE;
1172 safe_mask |= 1 << REISERFS_ERROR_RO;
1173 safe_mask |= 1 << REISERFS_ERROR_CONTINUE;
1174 safe_mask |= 1 << REISERFS_ERROR_PANIC;
1175 safe_mask |= 1 << REISERFS_QUOTA;
1177 /* Update the bitmask, taking care to keep
1178 * the bits we're not allowed to change here */
1179 REISERFS_SB(s)->s_mount_opt =
1181 s_mount_opt & ~safe_mask) | (mount_options & safe_mask);
1183 if (commit_max_age != 0 && commit_max_age != (unsigned int)-1) {
1184 journal->j_max_commit_age = commit_max_age;
1185 journal->j_max_trans_age = commit_max_age;
1186 } else if (commit_max_age == 0) {
1187 /* 0 means restore defaults. */
1188 journal->j_max_commit_age = journal->j_default_max_commit_age;
1189 journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE;
1193 int rc = reiserfs_resize(s, blocks);
1198 if (*mount_flags & MS_RDONLY) {
1199 reiserfs_xattr_init(s, *mount_flags);
1200 /* remount read-only */
1201 if (s->s_flags & MS_RDONLY)
1202 /* it is read-only already */
1204 /* try to remount file system with read-only permissions */
1205 if (sb_umount_state(rs) == REISERFS_VALID_FS
1206 || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) {
1210 err = journal_begin(&th, s, 10);
1214 /* Mounting a rw partition read-only. */
1215 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
1216 set_sb_umount_state(rs, REISERFS_SB(s)->s_mount_state);
1217 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
1219 /* remount read-write */
1220 if (!(s->s_flags & MS_RDONLY)) {
1221 reiserfs_xattr_init(s, *mount_flags);
1222 return 0; /* We are read-write already */
1225 if (reiserfs_is_journal_aborted(journal))
1226 return journal->j_errno;
1228 handle_data_mode(s, mount_options);
1229 handle_barrier_mode(s, mount_options);
1230 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
1231 s->s_flags &= ~MS_RDONLY; /* now it is safe to call journal_begin */
1232 err = journal_begin(&th, s, 10);
1236 /* Mount a partition which is read-only, read-write */
1237 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
1238 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
1239 s->s_flags &= ~MS_RDONLY;
1240 set_sb_umount_state(rs, REISERFS_ERROR_FS);
1241 /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */
1242 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
1243 REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS;
1245 /* this will force a full flush of all journal lists */
1246 SB_JOURNAL(s)->j_must_wait = 1;
1247 err = journal_end(&th, s, 10);
1252 if (!(*mount_flags & MS_RDONLY)) {
1253 finish_unfinished(s);
1254 reiserfs_xattr_init(s, *mount_flags);
1260 /* load_bitmap_info_data - Sets up the reiserfs_bitmap_info structure from disk.
1261 * @sb - superblock for this filesystem
1262 * @bi - the bitmap info to be loaded. Requires that bi->bh is valid.
1264 * This routine counts how many free bits there are, finding the first zero
1265 * as a side effect. Could also be implemented as a loop of test_bit() calls, or
1266 * a loop of find_first_zero_bit() calls. This implementation is similar to
1267 * find_first_zero_bit(), but doesn't return after it finds the first bit.
1268 * Should only be called on fs mount, but should be fairly efficient anyways.
1270 * bi->first_zero_hint is considered unset if it == 0, since the bitmap itself
1271 * will * invariably occupt block 0 represented in the bitmap. The only
1272 * exception to this is when free_count also == 0, since there will be no
1273 * free blocks at all.
1276 static void load_bitmap_info_data(struct super_block *sb,
1277 struct reiserfs_bitmap_info *bi)
1279 unsigned long *cur = (unsigned long *)bi->bh->b_data;
1281 while ((char *)cur < (bi->bh->b_data + sb->s_blocksize)) {
1283 /* No need to scan if all 0's or all 1's.
1284 * Since we're only counting 0's, we can simply ignore all 1's */
1286 if (bi->first_zero_hint == 0) {
1287 bi->first_zero_hint =
1288 ((char *)cur - bi->bh->b_data) << 3;
1290 bi->free_count += sizeof(unsigned long) * 8;
1291 } else if (*cur != ~0L) {
1293 for (b = 0; b < sizeof(unsigned long) * 8; b++) {
1294 if (!reiserfs_test_le_bit(b, cur)) {
1296 if (bi->first_zero_hint == 0)
1297 bi->first_zero_hint =
1299 bi->bh->b_data) << 3) + b;
1306 #ifdef CONFIG_REISERFS_CHECK
1307 // This outputs a lot of unneded info on big FSes
1308 // reiserfs_warning ("bitmap loaded from block %d: %d free blocks",
1309 // bi->bh->b_blocknr, bi->free_count);
1313 static int read_bitmaps(struct super_block *s)
1318 vmalloc(sizeof(struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
1319 if (SB_AP_BITMAP(s) == 0)
1321 memset(SB_AP_BITMAP(s), 0,
1322 sizeof(struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
1323 for (i = 0, bmap_nr =
1324 REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1;
1325 i < SB_BMAP_NR(s); i++, bmap_nr = s->s_blocksize * 8 * i) {
1326 SB_AP_BITMAP(s)[i].bh = sb_getblk(s, bmap_nr);
1327 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh))
1328 ll_rw_block(READ, 1, &SB_AP_BITMAP(s)[i].bh);
1330 for (i = 0; i < SB_BMAP_NR(s); i++) {
1331 wait_on_buffer(SB_AP_BITMAP(s)[i].bh);
1332 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
1333 reiserfs_warning(s, "sh-2029: reiserfs read_bitmaps: "
1334 "bitmap block (#%lu) reading failed",
1335 SB_AP_BITMAP(s)[i].bh->b_blocknr);
1336 for (i = 0; i < SB_BMAP_NR(s); i++)
1337 brelse(SB_AP_BITMAP(s)[i].bh);
1338 vfree(SB_AP_BITMAP(s));
1339 SB_AP_BITMAP(s) = NULL;
1342 load_bitmap_info_data(s, SB_AP_BITMAP(s) + i);
1347 static int read_old_bitmaps(struct super_block *s)
1350 struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(s);
1351 int bmp1 = (REISERFS_OLD_DISK_OFFSET_IN_BYTES / s->s_blocksize) + 1; /* first of bitmap blocks */
1353 /* read true bitmap */
1355 vmalloc(sizeof(struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1356 if (SB_AP_BITMAP(s) == 0)
1359 memset(SB_AP_BITMAP(s), 0,
1360 sizeof(struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1362 for (i = 0; i < sb_bmap_nr(rs); i++) {
1363 SB_AP_BITMAP(s)[i].bh = sb_bread(s, bmp1 + i);
1364 if (!SB_AP_BITMAP(s)[i].bh)
1366 load_bitmap_info_data(s, SB_AP_BITMAP(s) + i);
1372 static int read_super_block(struct super_block *s, int offset)
1374 struct buffer_head *bh;
1375 struct reiserfs_super_block *rs;
1378 bh = sb_bread(s, offset / s->s_blocksize);
1380 reiserfs_warning(s, "sh-2006: read_super_block: "
1381 "bread failed (dev %s, block %lu, size %lu)",
1382 reiserfs_bdevname(s), offset / s->s_blocksize,
1387 rs = (struct reiserfs_super_block *)bh->b_data;
1388 if (!is_any_reiserfs_magic_string(rs)) {
1393 // ok, reiserfs signature (old or new) found in at the given offset
1395 fs_blocksize = sb_blocksize(rs);
1397 sb_set_blocksize(s, fs_blocksize);
1399 bh = sb_bread(s, offset / s->s_blocksize);
1401 reiserfs_warning(s, "sh-2007: read_super_block: "
1402 "bread failed (dev %s, block %lu, size %lu)\n",
1403 reiserfs_bdevname(s), offset / s->s_blocksize,
1408 rs = (struct reiserfs_super_block *)bh->b_data;
1409 if (sb_blocksize(rs) != s->s_blocksize) {
1410 reiserfs_warning(s, "sh-2011: read_super_block: "
1411 "can't find a reiserfs filesystem on (dev %s, block %Lu, size %lu)\n",
1412 reiserfs_bdevname(s),
1413 (unsigned long long)bh->b_blocknr,
1419 if (rs->s_v1.s_root_block == cpu_to_le32(-1)) {
1422 "Unfinished reiserfsck --rebuild-tree run detected. Please run\n"
1423 "reiserfsck --rebuild-tree and wait for a completion. If that fails\n"
1424 "get newer reiserfsprogs package");
1428 SB_BUFFER_WITH_SB(s) = bh;
1429 SB_DISK_SUPER_BLOCK(s) = rs;
1431 if (is_reiserfs_jr(rs)) {
1432 /* magic is of non-standard journal filesystem, look at s_version to
1433 find which format is in use */
1434 if (sb_version(rs) == REISERFS_VERSION_2)
1436 "read_super_block: found reiserfs format \"3.6\""
1437 " with non-standard journal");
1438 else if (sb_version(rs) == REISERFS_VERSION_1)
1440 "read_super_block: found reiserfs format \"3.5\""
1441 " with non-standard journal");
1444 "sh-2012: read_super_block: found unknown "
1445 "format \"%u\" of reiserfs with non-standard magic",
1450 /* s_version of standard format may contain incorrect information,
1451 so we just look at the magic string */
1453 "found reiserfs format \"%s\" with standard journal\n",
1454 is_reiserfs_3_5(rs) ? "3.5" : "3.6");
1456 s->s_op = &reiserfs_sops;
1457 s->s_export_op = &reiserfs_export_ops;
1459 s->s_qcop = &reiserfs_qctl_operations;
1460 s->dq_op = &reiserfs_quota_operations;
1463 /* new format is limited by the 32 bit wide i_blocks field, want to
1464 ** be one full block below that.
1466 s->s_maxbytes = (512LL << 32) - s->s_blocksize;
1470 /* after journal replay, reread all bitmap and super blocks */
1471 static int reread_meta_blocks(struct super_block *s)
1474 ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s)));
1475 wait_on_buffer(SB_BUFFER_WITH_SB(s));
1476 if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
1478 "reread_meta_blocks, error reading the super");
1482 for (i = 0; i < SB_BMAP_NR(s); i++) {
1483 ll_rw_block(READ, 1, &(SB_AP_BITMAP(s)[i].bh));
1484 wait_on_buffer(SB_AP_BITMAP(s)[i].bh);
1485 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
1487 "reread_meta_blocks, error reading bitmap block number %d at %llu",
1489 (unsigned long long)SB_AP_BITMAP(s)[i].
1498 /////////////////////////////////////////////////////
1499 // hash detection stuff
1501 // if root directory is empty - we set default - Yura's - hash and
1503 // FIXME: we look for only one name in a directory. If tea and yura
1504 // bith have the same value - we ask user to send report to the
1506 static __u32 find_hash_out(struct super_block *s)
1509 struct inode *inode;
1511 INITIALIZE_PATH(path);
1512 struct reiserfs_dir_entry de;
1513 __u32 hash = DEFAULT_HASH;
1515 inode = s->s_root->d_inode;
1517 do { // Some serious "goto"-hater was there ;)
1518 u32 teahash, r5hash, yurahash;
1520 make_cpu_key(&key, inode, ~0, TYPE_DIRENTRY, 3);
1521 retval = search_by_entry_key(s, &key, &path, &de);
1522 if (retval == IO_ERROR) {
1526 if (retval == NAME_NOT_FOUND)
1528 set_de_name_and_namelen(&de);
1529 if (deh_offset(&(de.de_deh[de.de_entry_num])) == DOT_DOT_OFFSET) {
1530 /* allow override in this case */
1531 if (reiserfs_rupasov_hash(s)) {
1534 reiserfs_warning(s, "FS seems to be empty, autodetect "
1535 "is using the default hash");
1538 r5hash = GET_HASH_VALUE(r5_hash(de.de_name, de.de_namelen));
1539 teahash = GET_HASH_VALUE(keyed_hash(de.de_name, de.de_namelen));
1540 yurahash = GET_HASH_VALUE(yura_hash(de.de_name, de.de_namelen));
1541 if (((teahash == r5hash)
1543 (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num])))
1544 == r5hash)) || ((teahash == yurahash)
1546 GET_HASH_VALUE(deh_offset
1551 || ((r5hash == yurahash)
1553 GET_HASH_VALUE(deh_offset
1554 (&(de.de_deh[de.de_entry_num])))))) {
1556 "Unable to automatically detect hash function. "
1557 "Please mount with -o hash={tea,rupasov,r5}",
1558 reiserfs_bdevname(s));
1562 if (GET_HASH_VALUE(deh_offset(&(de.de_deh[de.de_entry_num]))) ==
1565 else if (GET_HASH_VALUE
1566 (deh_offset(&(de.de_deh[de.de_entry_num]))) == teahash)
1568 else if (GET_HASH_VALUE
1569 (deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash)
1572 reiserfs_warning(s, "Unrecognised hash function");
1581 // finds out which hash names are sorted with
1582 static int what_hash(struct super_block *s)
1586 code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s));
1588 /* reiserfs_hash_detect() == true if any of the hash mount options
1589 ** were used. We must check them to make sure the user isn't
1590 ** using a bad hash value
1592 if (code == UNSET_HASH || reiserfs_hash_detect(s))
1593 code = find_hash_out(s);
1595 if (code != UNSET_HASH && reiserfs_hash_detect(s)) {
1596 /* detection has found the hash, and we must check against the
1599 if (reiserfs_rupasov_hash(s) && code != YURA_HASH) {
1600 reiserfs_warning(s, "Error, %s hash detected, "
1601 "unable to force rupasov hash",
1602 reiserfs_hashname(code));
1604 } else if (reiserfs_tea_hash(s) && code != TEA_HASH) {
1605 reiserfs_warning(s, "Error, %s hash detected, "
1606 "unable to force tea hash",
1607 reiserfs_hashname(code));
1609 } else if (reiserfs_r5_hash(s) && code != R5_HASH) {
1610 reiserfs_warning(s, "Error, %s hash detected, "
1611 "unable to force r5 hash",
1612 reiserfs_hashname(code));
1616 /* find_hash_out was not called or could not determine the hash */
1617 if (reiserfs_rupasov_hash(s)) {
1619 } else if (reiserfs_tea_hash(s)) {
1621 } else if (reiserfs_r5_hash(s)) {
1626 /* if we are mounted RW, and we have a new valid hash code, update
1629 if (code != UNSET_HASH &&
1630 !(s->s_flags & MS_RDONLY) &&
1631 code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) {
1632 set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code);
1637 // return pointer to appropriate function
1638 static hashf_t hash_function(struct super_block *s)
1640 switch (what_hash(s)) {
1642 reiserfs_info(s, "Using tea hash to sort names\n");
1645 reiserfs_info(s, "Using rupasov hash to sort names\n");
1648 reiserfs_info(s, "Using r5 hash to sort names\n");
1654 // this is used to set up correct value for old partitions
1655 static int function2code(hashf_t func)
1657 if (func == keyed_hash)
1659 if (func == yura_hash)
1661 if (func == r5_hash)
1664 BUG(); // should never happen
1669 #define SWARN(silent, s, ...) \
1671 reiserfs_warning (s, __VA_ARGS__)
1673 static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
1675 struct inode *root_inode;
1677 struct reiserfs_transaction_handle th;
1679 unsigned long blocks;
1680 unsigned int commit_max_age = 0;
1682 struct reiserfs_iget_args args;
1683 struct reiserfs_super_block *rs;
1685 struct reiserfs_sb_info *sbi;
1686 int errval = -EINVAL;
1688 sbi = kmalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL);
1694 memset(sbi, 0, sizeof(struct reiserfs_sb_info));
1695 /* Set default values for options: non-aggressive tails, RO on errors */
1696 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_SMALLTAIL);
1697 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_ERROR_RO);
1698 /* no preallocation minimum, be smart in
1699 reiserfs_file_write instead */
1700 REISERFS_SB(s)->s_alloc_options.preallocmin = 0;
1701 /* Preallocate by 16 blocks (17-1) at once */
1702 REISERFS_SB(s)->s_alloc_options.preallocsize = 17;
1703 /* Initialize the rwsem for xattr dir */
1704 init_rwsem(&REISERFS_SB(s)->xattr_dir_sem);
1706 /* setup default block allocator options */
1707 reiserfs_init_alloc_options(s);
1710 if (reiserfs_parse_options
1711 (s, (char *)data, &(sbi->s_mount_opt), &blocks, &jdev_name,
1712 &commit_max_age) == 0) {
1717 SWARN(silent, s, "jmacd-7: reiserfs_fill_super: resize option "
1718 "for remount only");
1722 /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */
1723 if (!read_super_block(s, REISERFS_OLD_DISK_OFFSET_IN_BYTES))
1725 /* try new format (64-th 1k block), which can contain reiserfs super block */
1726 else if (read_super_block(s, REISERFS_DISK_OFFSET_IN_BYTES)) {
1728 "sh-2021: reiserfs_fill_super: can not find reiserfs on %s",
1729 reiserfs_bdevname(s));
1733 rs = SB_DISK_SUPER_BLOCK(s);
1734 /* Let's do basic sanity check to verify that underlying device is not
1735 smaller than the filesystem. If the check fails then abort and scream,
1736 because bad stuff will happen otherwise. */
1737 if (s->s_bdev && s->s_bdev->bd_inode
1738 && i_size_read(s->s_bdev->bd_inode) <
1739 sb_block_count(rs) * sb_blocksize(rs)) {
1741 "Filesystem on %s cannot be mounted because it is bigger than the device",
1742 reiserfs_bdevname(s));
1744 "You may need to run fsck or increase size of your LVM partition");
1746 "Or may be you forgot to reboot after fdisk when it told you to");
1750 sbi->s_mount_state = SB_REISERFS_STATE(s);
1751 sbi->s_mount_state = REISERFS_VALID_FS;
1753 if (old_format ? read_old_bitmaps(s) : read_bitmaps(s)) {
1755 "jmacd-8: reiserfs_fill_super: unable to read bitmap");
1758 #ifdef CONFIG_REISERFS_CHECK
1759 SWARN(silent, s, "CONFIG_REISERFS_CHECK is set ON");
1760 SWARN(silent, s, "- it is slow mode for debugging.");
1763 /* make data=ordered the default */
1764 if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) &&
1765 !reiserfs_data_writeback(s)) {
1766 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED);
1769 if (reiserfs_data_log(s)) {
1770 reiserfs_info(s, "using journaled data mode\n");
1771 } else if (reiserfs_data_ordered(s)) {
1772 reiserfs_info(s, "using ordered data mode\n");
1774 reiserfs_info(s, "using writeback data mode\n");
1776 if (reiserfs_barrier_flush(s)) {
1777 printk("reiserfs: using flush barriers\n");
1779 // set_device_ro(s->s_dev, 1) ;
1780 if (journal_init(s, jdev_name, old_format, commit_max_age)) {
1782 "sh-2022: reiserfs_fill_super: unable to initialize journal space");
1785 jinit_done = 1; /* once this is set, journal_release must be called
1786 ** if we error out of the mount
1789 if (reread_meta_blocks(s)) {
1791 "jmacd-9: reiserfs_fill_super: unable to reread meta blocks after journal init");
1798 if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) {
1800 "clm-7000: Detected readonly device, marking FS readonly");
1801 s->s_flags |= MS_RDONLY;
1803 args.objectid = REISERFS_ROOT_OBJECTID;
1804 args.dirid = REISERFS_ROOT_PARENT_OBJECTID;
1806 iget5_locked(s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor,
1807 reiserfs_init_locked_inode, (void *)(&args));
1810 "jmacd-10: reiserfs_fill_super: get root inode failed");
1814 if (root_inode->i_state & I_NEW) {
1815 reiserfs_read_locked_inode(root_inode, &args);
1816 unlock_new_inode(root_inode);
1819 s->s_root = d_alloc_root(root_inode);
1824 // define and initialize hash function
1825 sbi->s_hash_function = hash_function(s);
1826 if (sbi->s_hash_function == NULL) {
1832 if (is_reiserfs_3_5(rs)
1833 || (is_reiserfs_jr(rs) && SB_VERSION(s) == REISERFS_VERSION_1))
1834 set_bit(REISERFS_3_5, &(sbi->s_properties));
1836 set_bit(REISERFS_3_6, &(sbi->s_properties));
1838 if (!(s->s_flags & MS_RDONLY)) {
1840 errval = journal_begin(&th, s, 1);
1846 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
1848 set_sb_umount_state(rs, REISERFS_ERROR_FS);
1849 set_sb_fs_state(rs, 0);
1851 if (old_format_only(s)) {
1852 /* filesystem of format 3.5 either with standard or non-standard
1854 if (convert_reiserfs(s)) {
1855 /* and -o conv is given */
1858 "converting 3.5 filesystem to the 3.6 format");
1860 if (is_reiserfs_3_5(rs))
1861 /* put magic string of 3.6 format. 2.2 will not be able to
1862 mount this filesystem anymore */
1863 memcpy(rs->s_v1.s_magic,
1864 reiserfs_3_6_magic_string,
1866 (reiserfs_3_6_magic_string));
1868 set_sb_version(rs, REISERFS_VERSION_2);
1869 reiserfs_convert_objectid_map_v1(s);
1870 set_bit(REISERFS_3_6, &(sbi->s_properties));
1871 clear_bit(REISERFS_3_5, &(sbi->s_properties));
1872 } else if (!silent) {
1873 reiserfs_info(s, "using 3.5.x disk format\n");
1877 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB(s));
1878 errval = journal_end(&th, s, 1);
1885 if ((errval = reiserfs_xattr_init(s, s->s_flags))) {
1891 /* look for files which were to be removed in previous session */
1892 finish_unfinished(s);
1894 if (old_format_only(s) && !silent) {
1895 reiserfs_info(s, "using 3.5.x disk format\n");
1898 if ((errval = reiserfs_xattr_init(s, s->s_flags))) {
1904 // mark hash in super block: it could be unset. overwrite should be ok
1905 set_sb_hash_function_code(rs, function2code(sbi->s_hash_function));
1909 reiserfs_proc_info_init(s);
1911 init_waitqueue_head(&(sbi->s_wait));
1912 spin_lock_init(&sbi->bitmap_lock);
1917 if (jinit_done) { /* kill the commit thread, free journal ram */
1918 journal_release_error(NULL, s);
1920 if (SB_DISK_SUPER_BLOCK(s)) {
1921 for (j = 0; j < SB_BMAP_NR(s); j++) {
1922 if (SB_AP_BITMAP(s))
1923 brelse(SB_AP_BITMAP(s)[j].bh);
1925 vfree(SB_AP_BITMAP(s));
1927 if (SB_BUFFER_WITH_SB(s))
1928 brelse(SB_BUFFER_WITH_SB(s));
1930 for (j = 0; j < MAXQUOTAS; j++) {
1931 kfree(sbi->s_qf_names[j]);
1932 sbi->s_qf_names[j] = NULL;
1937 s->s_fs_info = NULL;
1941 static int reiserfs_statfs(struct dentry *dentry, struct kstatfs *buf)
1943 struct reiserfs_super_block *rs = SB_DISK_SUPER_BLOCK(dentry->d_sb);
1945 buf->f_namelen = (REISERFS_MAX_NAME(s->s_blocksize));
1946 buf->f_bfree = sb_free_blocks(rs);
1947 buf->f_bavail = buf->f_bfree;
1948 buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1;
1949 buf->f_bsize = dentry->d_sb->s_blocksize;
1950 /* changed to accommodate gcc folks. */
1951 buf->f_type = REISERFS_SUPER_MAGIC;
1956 static int reiserfs_dquot_initialize(struct inode *inode, int type)
1958 struct reiserfs_transaction_handle th;
1961 /* We may create quota structure so we need to reserve enough blocks */
1962 reiserfs_write_lock(inode->i_sb);
1964 journal_begin(&th, inode->i_sb,
1965 2 * REISERFS_QUOTA_INIT_BLOCKS(inode->i_sb));
1968 ret = dquot_initialize(inode, type);
1970 journal_end(&th, inode->i_sb,
1971 2 * REISERFS_QUOTA_INIT_BLOCKS(inode->i_sb));
1975 reiserfs_write_unlock(inode->i_sb);
1979 static int reiserfs_dquot_drop(struct inode *inode)
1981 struct reiserfs_transaction_handle th;
1984 /* We may delete quota structure so we need to reserve enough blocks */
1985 reiserfs_write_lock(inode->i_sb);
1987 journal_begin(&th, inode->i_sb,
1988 2 * REISERFS_QUOTA_DEL_BLOCKS(inode->i_sb));
1991 ret = dquot_drop(inode);
1993 journal_end(&th, inode->i_sb,
1994 2 * REISERFS_QUOTA_DEL_BLOCKS(inode->i_sb));
1998 reiserfs_write_unlock(inode->i_sb);
2002 static int reiserfs_write_dquot(struct dquot *dquot)
2004 struct reiserfs_transaction_handle th;
2007 reiserfs_write_lock(dquot->dq_sb);
2009 journal_begin(&th, dquot->dq_sb,
2010 REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
2013 ret = dquot_commit(dquot);
2015 journal_end(&th, dquot->dq_sb,
2016 REISERFS_QUOTA_TRANS_BLOCKS(dquot->dq_sb));
2020 reiserfs_write_unlock(dquot->dq_sb);
2024 static int reiserfs_acquire_dquot(struct dquot *dquot)
2026 struct reiserfs_transaction_handle th;
2029 reiserfs_write_lock(dquot->dq_sb);
2031 journal_begin(&th, dquot->dq_sb,
2032 REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb));
2035 ret = dquot_acquire(dquot);
2037 journal_end(&th, dquot->dq_sb,
2038 REISERFS_QUOTA_INIT_BLOCKS(dquot->dq_sb));
2042 reiserfs_write_unlock(dquot->dq_sb);
2046 static int reiserfs_release_dquot(struct dquot *dquot)
2048 struct reiserfs_transaction_handle th;
2051 reiserfs_write_lock(dquot->dq_sb);
2053 journal_begin(&th, dquot->dq_sb,
2054 REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb));
2057 ret = dquot_release(dquot);
2059 journal_end(&th, dquot->dq_sb,
2060 REISERFS_QUOTA_DEL_BLOCKS(dquot->dq_sb));
2064 reiserfs_write_unlock(dquot->dq_sb);
2068 static int reiserfs_mark_dquot_dirty(struct dquot *dquot)
2070 /* Are we journalling quotas? */
2071 if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] ||
2072 REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) {
2073 dquot_mark_dquot_dirty(dquot);
2074 return reiserfs_write_dquot(dquot);
2076 return dquot_mark_dquot_dirty(dquot);
2079 static int reiserfs_write_info(struct super_block *sb, int type)
2081 struct reiserfs_transaction_handle th;
2084 /* Data block + inode block */
2085 reiserfs_write_lock(sb);
2086 ret = journal_begin(&th, sb, 2);
2089 ret = dquot_commit_info(sb, type);
2090 err = journal_end(&th, sb, 2);
2094 reiserfs_write_unlock(sb);
2099 * Turn on quotas during mount time - we need to find the quota file and such...
2101 static int reiserfs_quota_on_mount(struct super_block *sb, int type)
2103 return vfs_quota_on_mount(sb, REISERFS_SB(sb)->s_qf_names[type],
2104 REISERFS_SB(sb)->s_jquota_fmt, type);
2108 * Standard function to be called on quota_on
2110 static int reiserfs_quota_on(struct super_block *sb, int type, int format_id,
2114 struct nameidata nd;
2116 if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA)))
2118 err = path_lookup(path, LOOKUP_FOLLOW, &nd);
2121 /* Quotafile not on the same filesystem? */
2122 if (nd.mnt->mnt_sb != sb) {
2126 /* We must not pack tails for quota files on reiserfs for quota IO to work */
2127 if (!REISERFS_I(nd.dentry->d_inode)->i_flags & i_nopack_mask) {
2128 reiserfs_warning(sb,
2129 "reiserfs: Quota file must have tail packing disabled.");
2133 /* Not journalling quota? No more tests needed... */
2134 if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] &&
2135 !REISERFS_SB(sb)->s_qf_names[GRPQUOTA]) {
2137 return vfs_quota_on(sb, type, format_id, path);
2139 /* Quotafile not of fs root? */
2140 if (nd.dentry->d_parent->d_inode != sb->s_root->d_inode)
2141 reiserfs_warning(sb,
2142 "reiserfs: Quota file not on filesystem root. "
2143 "Journalled quota will not work.");
2145 return vfs_quota_on(sb, type, format_id, path);
2148 /* Read data from quotafile - avoid pagecache and such because we cannot afford
2149 * acquiring the locks... As quota files are never truncated and quota code
2150 * itself serializes the operations (and noone else should touch the files)
2151 * we don't have to be afraid of races */
2152 static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data,
2153 size_t len, loff_t off)
2155 struct inode *inode = sb_dqopt(sb)->files[type];
2156 unsigned long blk = off >> sb->s_blocksize_bits;
2157 int err = 0, offset = off & (sb->s_blocksize - 1), tocopy;
2159 struct buffer_head tmp_bh, *bh;
2160 loff_t i_size = i_size_read(inode);
2164 if (off + len > i_size)
2167 while (toread > 0) {
2169 sb->s_blocksize - offset <
2170 toread ? sb->s_blocksize - offset : toread;
2172 /* Quota files are without tails so we can safely use this function */
2173 reiserfs_write_lock(sb);
2174 err = reiserfs_get_block(inode, blk, &tmp_bh, 0);
2175 reiserfs_write_unlock(sb);
2178 if (!buffer_mapped(&tmp_bh)) /* A hole? */
2179 memset(data, 0, tocopy);
2181 bh = sb_bread(sb, tmp_bh.b_blocknr);
2184 memcpy(data, bh->b_data + offset, tocopy);
2195 /* Write to quotafile (we know the transaction is already started and has
2196 * enough credits) */
2197 static ssize_t reiserfs_quota_write(struct super_block *sb, int type,
2198 const char *data, size_t len, loff_t off)
2200 struct inode *inode = sb_dqopt(sb)->files[type];
2201 unsigned long blk = off >> sb->s_blocksize_bits;
2202 int err = 0, offset = off & (sb->s_blocksize - 1), tocopy;
2203 int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL;
2204 size_t towrite = len;
2205 struct buffer_head tmp_bh, *bh;
2207 mutex_lock(&inode->i_mutex);
2208 while (towrite > 0) {
2209 tocopy = sb->s_blocksize - offset < towrite ?
2210 sb->s_blocksize - offset : towrite;
2212 err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE);
2215 if (offset || tocopy != sb->s_blocksize)
2216 bh = sb_bread(sb, tmp_bh.b_blocknr);
2218 bh = sb_getblk(sb, tmp_bh.b_blocknr);
2224 memcpy(bh->b_data + offset, data, tocopy);
2225 flush_dcache_page(bh->b_page);
2226 set_buffer_uptodate(bh);
2228 reiserfs_prepare_for_journal(sb, bh, 1);
2229 journal_mark_dirty(current->journal_info, sb, bh);
2231 reiserfs_add_ordered_list(inode, bh);
2241 if (inode->i_size < off + len - towrite)
2242 i_size_write(inode, off + len - towrite);
2244 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
2245 mark_inode_dirty(inode);
2246 mutex_unlock(&inode->i_mutex);
2247 return len - towrite;
2252 static int get_super_block(struct file_system_type *fs_type,
2253 int flags, const char *dev_name,
2254 void *data, struct vfsmount *mnt)
2256 return get_sb_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super,
2260 static int __init init_reiserfs_fs(void)
2264 if ((ret = init_inodecache())) {
2268 if ((ret = reiserfs_xattr_register_handlers()))
2269 goto failed_reiserfs_xattr_register_handlers;
2271 reiserfs_proc_info_global_init();
2272 reiserfs_proc_register_global("version",
2273 reiserfs_global_version_in_proc);
2275 ret = register_filesystem(&reiserfs_fs_type);
2281 reiserfs_xattr_unregister_handlers();
2283 failed_reiserfs_xattr_register_handlers:
2284 reiserfs_proc_unregister_global("version");
2285 reiserfs_proc_info_global_done();
2286 destroy_inodecache();
2291 static void __exit exit_reiserfs_fs(void)
2293 reiserfs_xattr_unregister_handlers();
2294 reiserfs_proc_unregister_global("version");
2295 reiserfs_proc_info_global_done();
2296 unregister_filesystem(&reiserfs_fs_type);
2297 destroy_inodecache();
2300 struct file_system_type reiserfs_fs_type = {
2301 .owner = THIS_MODULE,
2303 .get_sb = get_super_block,
2304 .kill_sb = kill_block_super,
2305 .fs_flags = FS_REQUIRES_DEV,
2308 MODULE_DESCRIPTION("ReiserFS journaled filesystem");
2309 MODULE_AUTHOR("Hans Reiser <reiser@namesys.com>");
2310 MODULE_LICENSE("GPL");
2312 module_init(init_reiserfs_fs);
2313 module_exit(exit_reiserfs_fs);