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));
45 int is_reiserfs_3_6 (struct reiserfs_super_block * rs)
47 return !strncmp (rs->s_v1.s_magic, reiserfs_3_6_magic_string,
48 strlen (reiserfs_3_6_magic_string));
52 int is_reiserfs_jr (struct reiserfs_super_block * rs)
54 return !strncmp (rs->s_v1.s_magic, reiserfs_jr_magic_string,
55 strlen (reiserfs_jr_magic_string));
59 static int is_any_reiserfs_magic_string (struct reiserfs_super_block * rs)
61 return (is_reiserfs_3_5 (rs) || is_reiserfs_3_6 (rs) ||
65 static int reiserfs_remount (struct super_block * s, int * flags, char * data);
66 static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf);
68 static int reiserfs_sync_fs (struct super_block * s, int wait)
70 if (!(s->s_flags & MS_RDONLY)) {
71 struct reiserfs_transaction_handle th;
72 reiserfs_write_lock(s);
73 if (!journal_begin(&th, s, 1))
74 if (!journal_end_sync(&th, s, 1))
75 reiserfs_flush_old_commits(s);
76 s->s_dirt = 0; /* Even if it's not true.
77 * We'll loop forever in sync_supers otherwise */
78 reiserfs_write_unlock(s);
85 static void reiserfs_write_super(struct super_block *s)
87 reiserfs_sync_fs(s, 1);
90 static void reiserfs_write_super_lockfs (struct super_block * s)
92 struct reiserfs_transaction_handle th ;
93 reiserfs_write_lock(s);
94 if (!(s->s_flags & MS_RDONLY)) {
95 int err = journal_begin(&th, s, 1) ;
97 reiserfs_block_writes(&th) ;
99 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1);
100 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
101 reiserfs_block_writes(&th) ;
102 journal_end_sync(&th, s, 1) ;
106 reiserfs_write_unlock(s);
109 static void reiserfs_unlockfs(struct super_block *s) {
110 reiserfs_allow_writes(s) ;
113 extern const struct reiserfs_key MAX_KEY;
116 /* this is used to delete "save link" when there are no items of a
117 file it points to. It can either happen if unlink is completed but
118 "save unlink" removal, or if file has both unlink and truncate
119 pending and as unlink completes first (because key of "save link"
120 protecting unlink is bigger that a key lf "save link" which
121 protects truncate), so there left no items to make truncate
123 static int remove_save_link_only (struct super_block * s, struct reiserfs_key * key, int oid_free)
125 struct reiserfs_transaction_handle th;
128 /* we are going to do one balancing */
129 err = journal_begin (&th, s, JOURNAL_PER_BALANCE_CNT);
133 reiserfs_delete_solid_item (&th, NULL, key);
135 /* removals are protected by direct items */
136 reiserfs_release_objectid (&th, le32_to_cpu (key->k_objectid));
138 return journal_end (&th, s, JOURNAL_PER_BALANCE_CNT);
142 static int reiserfs_quota_on_mount(struct super_block *, int);
145 /* look for uncompleted unlinks and truncates and complete them */
146 static int finish_unfinished (struct super_block * s)
148 INITIALIZE_PATH (path);
149 struct cpu_key max_cpu_key, obj_key;
150 struct reiserfs_key save_link_key;
152 struct item_head * ih;
153 struct buffer_head * bh;
157 struct inode * inode;
165 /* compose key to look for "save" links */
166 max_cpu_key.version = KEY_FORMAT_3_5;
167 max_cpu_key.on_disk_key = MAX_KEY;
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);
183 reiserfs_warning(s, "reiserfs: cannot turn on journalled quota: error %d", ret);
189 REISERFS_SB(s)->s_is_unlinked_ok = 1;
191 retval = search_item (s, &max_cpu_key, &path);
192 if (retval != ITEM_NOT_FOUND) {
193 reiserfs_warning (s, "vs-2140: finish_unfinished: search_by_key returned %d",
198 bh = get_last_bh (&path);
199 item_pos = get_item_pos (&path);
200 if (item_pos != B_NR_ITEMS (bh)) {
201 reiserfs_warning (s, "vs-2060: finish_unfinished: wrong position found");
205 ih = B_N_PITEM_HEAD (bh, item_pos);
207 if (le32_to_cpu (ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID)
208 /* there are no "save" links anymore */
211 save_link_key = ih->ih_key;
212 if (is_indirect_le_ih (ih))
217 /* reiserfs_iget needs k_dirid and k_objectid only */
218 item = B_I_PITEM (bh, ih);
219 obj_key.on_disk_key.k_dir_id = le32_to_cpu (*(__u32 *)item);
220 obj_key.on_disk_key.k_objectid = le32_to_cpu (ih->ih_key.k_objectid);
221 obj_key.on_disk_key.u.k_offset_v1.k_offset = 0;
222 obj_key.on_disk_key.u.k_offset_v1.k_uniqueness = 0;
226 inode = reiserfs_iget (s, &obj_key);
228 /* the unlink almost completed, it just did not manage to remove
229 "save" link and release objectid */
230 reiserfs_warning (s, "vs-2180: finish_unfinished: iget failed for %K",
232 retval = remove_save_link_only (s, &save_link_key, 1);
236 if (!truncate && inode->i_nlink) {
237 /* file is not unlinked */
238 reiserfs_warning (s, "vs-2185: finish_unfinished: file %K is not unlinked",
240 retval = remove_save_link_only (s, &save_link_key, 0);
245 if (truncate && S_ISDIR (inode->i_mode) ) {
246 /* We got a truncate request for a dir which is impossible.
247 The only imaginable way is to execute unfinished truncate request
248 then boot into old kernel, remove the file and create dir with
250 reiserfs_warning(s, "green-2101: impossible truncate on a directory %k. Please report", INODE_PKEY (inode));
251 retval = remove_save_link_only (s, &save_link_key, 0);
258 REISERFS_I(inode) -> i_flags |= i_link_saved_truncate_mask;
259 /* not completed truncate found. New size was committed together
261 reiserfs_info (s, "Truncating %k to %Ld ..",
262 INODE_PKEY (inode), inode->i_size);
263 reiserfs_truncate_file (inode, 0/*don't update modification time*/);
264 retval = remove_save_link (inode, truncate);
266 REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask;
267 /* not completed unlink (rmdir) found */
268 reiserfs_info (s, "Removing %k..", INODE_PKEY (inode));
269 /* removal gets completed in iput */
277 REISERFS_SB(s)->s_is_unlinked_ok = 0;
280 /* Turn quotas off */
281 for (i = 0; i < MAXQUOTAS; i++) {
282 if (sb_dqopt(s)->files[i])
283 vfs_quota_off_mount(s, i);
286 /* Restore the flag back */
287 s->s_flags &= ~MS_ACTIVE;
291 reiserfs_info (s, "There were %d uncompleted unlinks/truncates. "
292 "Completed\n", done);
296 /* to protect file being unlinked from getting lost we "safe" link files
297 being unlinked. This link will be deleted in the same transaction with last
298 item of file. mounting the filesytem we scan all these links and remove
299 files which almost got lost */
300 void add_save_link (struct reiserfs_transaction_handle * th,
301 struct inode * inode, int truncate)
303 INITIALIZE_PATH (path);
309 BUG_ON (!th->t_trans_id);
311 /* file can only get one "save link" of each kind */
313 ( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ),
314 "saved link already exists for truncated inode %lx",
315 ( long ) inode -> i_ino );
317 ( REISERFS_I(inode) -> i_flags & i_link_saved_unlink_mask ),
318 "saved link already exists for unlinked inode %lx",
319 ( long ) inode -> i_ino );
321 /* setup key of "save" link */
322 key.version = KEY_FORMAT_3_5;
323 key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID;
324 key.on_disk_key.k_objectid = inode->i_ino;
326 /* unlink, rmdir, rename */
327 set_cpu_key_k_offset (&key, 1 + inode->i_sb->s_blocksize);
328 set_cpu_key_k_type (&key, TYPE_DIRECT);
330 /* item head of "safe" link */
331 make_le_item_head (&ih, &key, key.version, 1 + inode->i_sb->s_blocksize, TYPE_DIRECT,
332 4/*length*/, 0xffff/*free space*/);
335 if (S_ISDIR (inode->i_mode))
336 reiserfs_warning(inode->i_sb, "green-2102: Adding a truncate savelink for a directory %k! Please report", INODE_PKEY(inode));
337 set_cpu_key_k_offset (&key, 1);
338 set_cpu_key_k_type (&key, TYPE_INDIRECT);
340 /* item head of "safe" link */
341 make_le_item_head (&ih, &key, key.version, 1, TYPE_INDIRECT,
342 4/*length*/, 0/*free space*/);
346 /* look for its place in the tree */
347 retval = search_item (inode->i_sb, &key, &path);
348 if (retval != ITEM_NOT_FOUND) {
349 if ( retval != -ENOSPC )
350 reiserfs_warning (inode->i_sb, "vs-2100: add_save_link:"
351 "search_by_key (%K) returned %d", &key, retval);
356 /* body of "save" link */
357 link = INODE_PKEY (inode)->k_dir_id;
359 /* put "save" link inot tree, don't charge quota to anyone */
360 retval = reiserfs_insert_item (th, &path, &key, &ih, NULL, (char *)&link);
362 if (retval != -ENOSPC)
363 reiserfs_warning (inode->i_sb, "vs-2120: add_save_link: insert_item returned %d",
367 REISERFS_I(inode) -> i_flags |= i_link_saved_truncate_mask;
369 REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask;
374 /* this opens transaction unlike add_save_link */
375 int remove_save_link (struct inode * inode, int truncate)
377 struct reiserfs_transaction_handle th;
378 struct reiserfs_key key;
381 /* we are going to do one balancing only */
382 err = journal_begin (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
386 /* setup key of "save" link */
387 key.k_dir_id = cpu_to_le32 (MAX_KEY_OBJECTID);
388 key.k_objectid = INODE_PKEY (inode)->k_objectid;
390 /* unlink, rmdir, rename */
391 set_le_key_k_offset (KEY_FORMAT_3_5, &key,
392 1 + inode->i_sb->s_blocksize);
393 set_le_key_k_type (KEY_FORMAT_3_5, &key, TYPE_DIRECT);
396 set_le_key_k_offset (KEY_FORMAT_3_5, &key, 1);
397 set_le_key_k_type (KEY_FORMAT_3_5, &key, TYPE_INDIRECT);
401 ( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ) ) ||
403 ( REISERFS_I(inode) -> i_flags & i_link_saved_unlink_mask ) ) )
404 /* don't take quota bytes from anywhere */
405 reiserfs_delete_solid_item (&th, NULL, &key);
407 reiserfs_release_objectid (&th, inode->i_ino);
408 REISERFS_I(inode) -> i_flags &= ~i_link_saved_unlink_mask;
410 REISERFS_I(inode) -> i_flags &= ~i_link_saved_truncate_mask;
412 return journal_end (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
416 static void reiserfs_put_super (struct super_block * s)
419 struct reiserfs_transaction_handle th ;
422 if (REISERFS_SB(s)->xattr_root) {
423 d_invalidate (REISERFS_SB(s)->xattr_root);
424 dput (REISERFS_SB(s)->xattr_root);
427 if (REISERFS_SB(s)->priv_root) {
428 d_invalidate (REISERFS_SB(s)->priv_root);
429 dput (REISERFS_SB(s)->priv_root);
432 /* change file system state to current state if it was mounted with read-write permissions */
433 if (!(s->s_flags & MS_RDONLY)) {
434 if (!journal_begin(&th, s, 10)) {
435 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
436 set_sb_umount_state( SB_DISK_SUPER_BLOCK(s), REISERFS_SB(s)->s_mount_state );
437 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
441 /* note, journal_release checks for readonly mount, and can decide not
442 ** to do a journal_end
444 journal_release(&th, s) ;
446 for (i = 0; i < SB_BMAP_NR (s); i ++)
447 brelse (SB_AP_BITMAP (s)[i].bh);
449 vfree (SB_AP_BITMAP (s));
451 brelse (SB_BUFFER_WITH_SB (s));
453 print_statistics (s);
455 if (REISERFS_SB(s)->s_kmallocs != 0) {
456 reiserfs_warning (s, "vs-2004: reiserfs_put_super: allocated memory left %d",
457 REISERFS_SB(s)->s_kmallocs);
460 if (REISERFS_SB(s)->reserved_blocks != 0) {
461 reiserfs_warning (s, "green-2005: reiserfs_put_super: reserved blocks left %d",
462 REISERFS_SB(s)->reserved_blocks);
465 reiserfs_proc_info_done( s );
473 static kmem_cache_t * reiserfs_inode_cachep;
475 static struct inode *reiserfs_alloc_inode(struct super_block *sb)
477 struct reiserfs_inode_info *ei;
478 ei = (struct reiserfs_inode_info *)kmem_cache_alloc(reiserfs_inode_cachep, SLAB_KERNEL);
481 return &ei->vfs_inode;
484 static void reiserfs_destroy_inode(struct inode *inode)
486 kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode));
489 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
491 struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *) foo;
493 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
494 SLAB_CTOR_CONSTRUCTOR) {
495 INIT_LIST_HEAD(&ei->i_prealloc_list) ;
496 inode_init_once(&ei->vfs_inode);
497 ei->i_acl_access = NULL;
498 ei->i_acl_default = NULL;
502 static int init_inodecache(void)
504 reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache",
505 sizeof(struct reiserfs_inode_info),
506 0, SLAB_RECLAIM_ACCOUNT,
508 if (reiserfs_inode_cachep == NULL)
513 static void destroy_inodecache(void)
515 if (kmem_cache_destroy(reiserfs_inode_cachep))
516 reiserfs_warning (NULL, "reiserfs_inode_cache: not all structures were freed");
519 /* we don't mark inodes dirty, we just log them */
520 static void reiserfs_dirty_inode (struct inode * inode) {
521 struct reiserfs_transaction_handle th ;
524 if (inode->i_sb->s_flags & MS_RDONLY) {
525 reiserfs_warning(inode->i_sb, "clm-6006: writing inode %lu on readonly FS",
529 reiserfs_write_lock(inode->i_sb);
531 /* this is really only used for atime updates, so they don't have
532 ** to be included in O_SYNC or fsync
534 err = journal_begin(&th, inode->i_sb, 1) ;
536 reiserfs_write_unlock (inode->i_sb);
539 reiserfs_update_sd (&th, inode);
540 journal_end(&th, inode->i_sb, 1) ;
541 reiserfs_write_unlock(inode->i_sb);
544 static void reiserfs_clear_inode (struct inode *inode)
546 struct posix_acl *acl;
548 acl = REISERFS_I(inode)->i_acl_access;
549 if (acl && !IS_ERR (acl))
550 posix_acl_release (acl);
551 REISERFS_I(inode)->i_acl_access = NULL;
553 acl = REISERFS_I(inode)->i_acl_default;
554 if (acl && !IS_ERR (acl))
555 posix_acl_release (acl);
556 REISERFS_I(inode)->i_acl_default = NULL;
560 static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
561 static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, loff_t);
564 static struct super_operations reiserfs_sops =
566 .alloc_inode = reiserfs_alloc_inode,
567 .destroy_inode = reiserfs_destroy_inode,
568 .write_inode = reiserfs_write_inode,
569 .dirty_inode = reiserfs_dirty_inode,
570 .delete_inode = reiserfs_delete_inode,
571 .clear_inode = reiserfs_clear_inode,
572 .put_super = reiserfs_put_super,
573 .write_super = reiserfs_write_super,
574 .sync_fs = reiserfs_sync_fs,
575 .write_super_lockfs = reiserfs_write_super_lockfs,
576 .unlockfs = reiserfs_unlockfs,
577 .statfs = reiserfs_statfs,
578 .remount_fs = reiserfs_remount,
580 .quota_read = reiserfs_quota_read,
581 .quota_write = reiserfs_quota_write,
586 #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group")
588 static int reiserfs_dquot_initialize(struct inode *, int);
589 static int reiserfs_dquot_drop(struct inode *);
590 static int reiserfs_write_dquot(struct dquot *);
591 static int reiserfs_acquire_dquot(struct dquot *);
592 static int reiserfs_release_dquot(struct dquot *);
593 static int reiserfs_mark_dquot_dirty(struct dquot *);
594 static int reiserfs_write_info(struct super_block *, int);
595 static int reiserfs_quota_on(struct super_block *, int, int, char *);
597 static struct dquot_operations reiserfs_quota_operations =
599 .initialize = reiserfs_dquot_initialize,
600 .drop = reiserfs_dquot_drop,
601 .alloc_space = dquot_alloc_space,
602 .alloc_inode = dquot_alloc_inode,
603 .free_space = dquot_free_space,
604 .free_inode = dquot_free_inode,
605 .transfer = dquot_transfer,
606 .write_dquot = reiserfs_write_dquot,
607 .acquire_dquot = reiserfs_acquire_dquot,
608 .release_dquot = reiserfs_release_dquot,
609 .mark_dirty = reiserfs_mark_dquot_dirty,
610 .write_info = reiserfs_write_info,
613 static struct quotactl_ops reiserfs_qctl_operations =
615 .quota_on = reiserfs_quota_on,
616 .quota_off = vfs_quota_off,
617 .quota_sync = vfs_quota_sync,
618 .get_info = vfs_get_dqinfo,
619 .set_info = vfs_set_dqinfo,
620 .get_dqblk = vfs_get_dqblk,
621 .set_dqblk = vfs_set_dqblk,
625 static struct export_operations reiserfs_export_ops = {
626 .encode_fh = reiserfs_encode_fh,
627 .decode_fh = reiserfs_decode_fh,
628 .get_parent = reiserfs_get_parent,
629 .get_dentry = reiserfs_get_dentry,
632 /* this struct is used in reiserfs_getopt () for containing the value for those
633 mount options that have values rather than being toggles. */
636 int setmask; /* bitmask which is to set on mount_options bitmask when this
637 value is found, 0 is no bits are to be changed. */
638 int clrmask; /* bitmask which is to clear on mount_options bitmask when this
639 value is found, 0 is no bits are to be changed. This is
640 applied BEFORE setmask */
643 /* Set this bit in arg_required to allow empty arguments */
644 #define REISERFS_OPT_ALLOWEMPTY 31
646 /* this struct is used in reiserfs_getopt() for describing the set of reiserfs
650 int arg_required; /* 0 if argument is not required, not 0 otherwise */
651 const arg_desc_t * values; /* list of values accepted by an option */
652 int setmask; /* bitmask which is to set on mount_options bitmask when this
653 value is found, 0 is no bits are to be changed. */
654 int clrmask; /* bitmask which is to clear on mount_options bitmask when this
655 value is found, 0 is no bits are to be changed. This is
656 applied BEFORE setmask */
659 /* possible values for -o data= */
660 static const arg_desc_t logging_mode[] = {
661 {"ordered", 1<<REISERFS_DATA_ORDERED, (1<<REISERFS_DATA_LOG|1<<REISERFS_DATA_WRITEBACK)},
662 {"journal", 1<<REISERFS_DATA_LOG, (1<<REISERFS_DATA_ORDERED|1<<REISERFS_DATA_WRITEBACK)},
663 {"writeback", 1<<REISERFS_DATA_WRITEBACK, (1<<REISERFS_DATA_ORDERED|1<<REISERFS_DATA_LOG)},
667 /* possible values for -o barrier= */
668 static const arg_desc_t barrier_mode[] = {
669 {"none", 1<<REISERFS_BARRIER_NONE, 1<<REISERFS_BARRIER_FLUSH},
670 {"flush", 1<<REISERFS_BARRIER_FLUSH, 1<<REISERFS_BARRIER_NONE},
674 /* possible values for "-o block-allocator=" and bits which are to be set in
675 s_mount_opt of reiserfs specific part of in-core super block */
676 static const arg_desc_t balloc[] = {
677 {"noborder", 1<<REISERFS_NO_BORDER, 0},
678 {"border", 0, 1<<REISERFS_NO_BORDER},
679 {"no_unhashed_relocation", 1<<REISERFS_NO_UNHASHED_RELOCATION, 0},
680 {"hashed_relocation", 1<<REISERFS_HASHED_RELOCATION, 0},
681 {"test4", 1<<REISERFS_TEST4, 0},
682 {"notest4", 0, 1<<REISERFS_TEST4},
686 static const arg_desc_t tails[] = {
687 {"on", 1<<REISERFS_LARGETAIL, 1<<REISERFS_SMALLTAIL},
688 {"off", 0, (1<<REISERFS_LARGETAIL)|(1<<REISERFS_SMALLTAIL)},
689 {"small", 1<<REISERFS_SMALLTAIL, 1<<REISERFS_LARGETAIL},
693 static const arg_desc_t error_actions[] = {
694 {"panic", 1 << REISERFS_ERROR_PANIC,
695 (1 << REISERFS_ERROR_RO | 1 << REISERFS_ERROR_CONTINUE)},
696 {"ro-remount", 1 << REISERFS_ERROR_RO,
697 (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_CONTINUE)},
698 #ifdef REISERFS_JOURNAL_ERROR_ALLOWS_NO_LOG
699 {"continue", 1 << REISERFS_ERROR_CONTINUE,
700 (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_RO)},
705 int reiserfs_default_io_size = 128 * 1024; /* Default recommended I/O size is 128k.
706 There might be broken applications that are
707 confused by this. Use nolargeio mount option
708 to get usual i/o size = PAGE_SIZE.
711 /* proceed only one option from a list *cur - string containing of mount options
712 opts - array of options which are accepted
713 opt_arg - if option is found and requires an argument and if it is specifed
714 in the input - pointer to the argument is stored here
715 bit_flags - if option requires to set a certain bit - it is set here
716 return -1 if unknown option is found, opt->arg_required otherwise */
717 static int reiserfs_getopt ( struct super_block * s, char ** cur, opt_desc_t * opts, char ** opt_arg,
718 unsigned long * bit_flags)
727 const opt_desc_t * opt;
728 const arg_desc_t * arg;
733 /* assume argument cannot contain commas */
734 *cur = strchr (p, ',');
740 if ( !strncmp (p, "alloc=", 6) ) {
741 /* Ugly special case, probably we should redo options parser so that
742 it can understand several arguments for some options, also so that
743 it can fill several bitfields with option values. */
744 if ( reiserfs_parse_alloc_options( s, p + 6) ) {
752 /* for every option in the list */
753 for (opt = opts; opt->option_name; opt ++) {
754 if (!strncmp (p, opt->option_name, strlen (opt->option_name))) {
756 if (opt->clrmask == (1 << REISERFS_UNSUPPORTED_OPT))
757 reiserfs_warning (s, "%s not supported.", p);
759 *bit_flags &= ~opt->clrmask;
760 if (opt->setmask == (1 << REISERFS_UNSUPPORTED_OPT))
761 reiserfs_warning (s, "%s not supported.", p);
763 *bit_flags |= opt->setmask;
768 if (!opt->option_name) {
769 reiserfs_warning (s, "unknown mount option \"%s\"", p);
773 p += strlen (opt->option_name);
776 if (!opt->arg_required) {
777 reiserfs_warning (s, "the option \"%s\" does not require an argument",
784 if (opt->arg_required) {
785 reiserfs_warning (s, "the option \"%s\" requires an argument", opt->option_name);
790 reiserfs_warning (s, "head of option \"%s\" is only correct", opt->option_name);
794 /* move to the argument, or to next option if argument is not required */
797 if ( opt->arg_required && !(opt->arg_required & (1<<REISERFS_OPT_ALLOWEMPTY)) && !strlen (p) ) {
798 /* this catches "option=," if not allowed */
799 reiserfs_warning (s, "empty argument for \"%s\"", opt->option_name);
804 /* *=NULLopt_arg contains pointer to argument */
806 return opt->arg_required & ~(1<<REISERFS_OPT_ALLOWEMPTY);
809 /* values possible for this option are listed in opt->values */
810 for (arg = opt->values; arg->value; arg ++) {
811 if (!strcmp (p, arg->value)) {
813 *bit_flags &= ~arg->clrmask;
814 *bit_flags |= arg->setmask;
816 return opt->arg_required;
820 reiserfs_warning (s, "bad value \"%s\" for option \"%s\"", p, opt->option_name);
824 /* returns 0 if something is wrong in option string, 1 - otherwise */
825 static int reiserfs_parse_options (struct super_block * s, char * options, /* string given via mount's -o */
826 unsigned long * mount_options,
827 /* after the parsing phase, contains the
828 collection of bitflags defining what
829 mount options were selected. */
830 unsigned long * blocks, /* strtol-ed from NNN of resize=NNN */
832 unsigned int * commit_max_age)
837 opt_desc_t opts[] = {
838 /* Compatibility stuff, so that -o notail for old setups still work */
839 {"tails", .arg_required = 't', .values = tails},
840 {"notail", .clrmask = (1<<REISERFS_LARGETAIL)|(1<<REISERFS_SMALLTAIL)},
841 {"conv", .setmask = 1<<REISERFS_CONVERT},
842 {"attrs", .setmask = 1<<REISERFS_ATTRS},
843 {"noattrs", .clrmask = 1<<REISERFS_ATTRS},
844 #ifdef CONFIG_REISERFS_FS_XATTR
845 {"user_xattr", .setmask = 1<<REISERFS_XATTRS_USER},
846 {"nouser_xattr",.clrmask = 1<<REISERFS_XATTRS_USER},
848 {"user_xattr", .setmask = 1<<REISERFS_UNSUPPORTED_OPT},
849 {"nouser_xattr",.clrmask = 1<<REISERFS_UNSUPPORTED_OPT},
851 #ifdef CONFIG_REISERFS_FS_POSIX_ACL
852 {"acl", .setmask = 1<<REISERFS_POSIXACL},
853 {"noacl", .clrmask = 1<<REISERFS_POSIXACL},
855 {"acl", .setmask = 1<<REISERFS_UNSUPPORTED_OPT},
856 {"noacl", .clrmask = 1<<REISERFS_UNSUPPORTED_OPT},
858 {"nolog",}, /* This is unsupported */
859 {"replayonly", .setmask = 1<<REPLAYONLY},
860 {"block-allocator", .arg_required = 'a', .values = balloc},
861 {"data", .arg_required = 'd', .values = logging_mode},
862 {"barrier", .arg_required = 'b', .values = barrier_mode},
863 {"resize", .arg_required = 'r', .values = NULL},
864 {"jdev", .arg_required = 'j', .values = NULL},
865 {"nolargeio", .arg_required = 'w', .values = NULL},
866 {"commit", .arg_required = 'c', .values = NULL},
869 {"errors", .arg_required = 'e', .values = error_actions},
870 {"usrjquota", .arg_required = 'u'|(1<<REISERFS_OPT_ALLOWEMPTY), .values = NULL},
871 {"grpjquota", .arg_required = 'g'|(1<<REISERFS_OPT_ALLOWEMPTY), .values = NULL},
872 {"jqfmt", .arg_required = 'f', .values = NULL},
877 if (!options || !*options)
878 /* use default configuration: create tails, journaling on, no
879 conversion to newest format */
882 for (pos = options; pos; ) {
883 c = reiserfs_getopt (s, &pos, opts, &arg, mount_options);
885 /* wrong option is given */
893 *blocks = simple_strtoul (arg, &p, 0);
895 /* NNN does not look like a number */
896 reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg);
903 unsigned long val = simple_strtoul (arg, &p, 0);
904 /* commit=NNN (time in seconds) */
905 if ( *p != '\0' || val >= (unsigned int)-1) {
906 reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg); return 0;
908 *commit_max_age = (unsigned int)val;
913 int val = simple_strtoul (arg, &p, 0);
916 reiserfs_warning (s, "reiserfs_parse_options: non-numeric value %s for nolargeio option", arg);
920 reiserfs_default_io_size = PAGE_SIZE;
922 reiserfs_default_io_size = 128 * 1024;
926 if (arg && *arg && jdev_name) {
927 if ( *jdev_name ) { //Hm, already assigned?
928 reiserfs_warning (s, "reiserfs_parse_options: journal device was already specified to be %s", *jdev_name);
936 if (c == 'u' || c == 'g') {
937 int qtype = c == 'u' ? USRQUOTA : GRPQUOTA;
939 if (sb_any_quota_enabled(s)) {
940 reiserfs_warning(s, "reiserfs_parse_options: cannot change journalled quota options when quota turned on.");
943 if (*arg) { /* Some filename specified? */
944 if (REISERFS_SB(s)->s_qf_names[qtype] && strcmp(REISERFS_SB(s)->s_qf_names[qtype], arg)) {
945 reiserfs_warning(s, "reiserfs_parse_options: %s quota file already specified.", QTYPE2NAME(qtype));
948 if (strchr(arg, '/')) {
949 reiserfs_warning(s, "reiserfs_parse_options: quotafile must be on filesystem root.");
952 REISERFS_SB(s)->s_qf_names[qtype] = kmalloc(strlen(arg)+1, GFP_KERNEL);
953 if (!REISERFS_SB(s)->s_qf_names[qtype]) {
954 reiserfs_warning(s, "reiserfs_parse_options: not enough memory for storing quotafile name.");
957 strcpy(REISERFS_SB(s)->s_qf_names[qtype], arg);
960 if (REISERFS_SB(s)->s_qf_names[qtype]) {
961 kfree(REISERFS_SB(s)->s_qf_names[qtype]);
962 REISERFS_SB(s)->s_qf_names[qtype] = NULL;
967 if (!strcmp(arg, "vfsold"))
968 REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_OLD;
969 else if (!strcmp(arg, "vfsv0"))
970 REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_V0;
972 reiserfs_warning(s, "reiserfs_parse_options: unknown quota format specified.");
977 if (c == 'u' || c == 'g' || c == 'f') {
978 reiserfs_warning(s, "reiserfs_parse_options: journalled quota options not supported.");
985 if (!REISERFS_SB(s)->s_jquota_fmt && (REISERFS_SB(s)->s_qf_names[USRQUOTA] || REISERFS_SB(s)->s_qf_names[GRPQUOTA])) {
986 reiserfs_warning(s, "reiserfs_parse_options: journalled quota format not specified.");
993 static void switch_data_mode(struct super_block *s, unsigned long mode) {
994 REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) |
995 (1 << REISERFS_DATA_ORDERED) |
996 (1 << REISERFS_DATA_WRITEBACK));
997 REISERFS_SB(s)->s_mount_opt |= (1 << mode);
1000 static void handle_data_mode(struct super_block *s, unsigned long mount_options)
1002 if (mount_options & (1 << REISERFS_DATA_LOG)) {
1003 if (!reiserfs_data_log(s)) {
1004 switch_data_mode(s, REISERFS_DATA_LOG);
1005 reiserfs_info (s, "switching to journaled data mode\n");
1007 } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) {
1008 if (!reiserfs_data_ordered(s)) {
1009 switch_data_mode(s, REISERFS_DATA_ORDERED);
1010 reiserfs_info (s, "switching to ordered data mode\n");
1012 } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) {
1013 if (!reiserfs_data_writeback(s)) {
1014 switch_data_mode(s, REISERFS_DATA_WRITEBACK);
1015 reiserfs_info (s, "switching to writeback data mode\n");
1020 static void handle_barrier_mode(struct super_block *s, unsigned long bits) {
1021 int flush = (1 << REISERFS_BARRIER_FLUSH);
1022 int none = (1 << REISERFS_BARRIER_NONE);
1023 int all_barrier = flush | none;
1025 if (bits & all_barrier) {
1026 REISERFS_SB(s)->s_mount_opt &= ~all_barrier;
1028 REISERFS_SB(s)->s_mount_opt |= flush;
1029 printk("reiserfs: enabling write barrier flush mode\n");
1030 } else if (bits & none) {
1031 REISERFS_SB(s)->s_mount_opt |= none;
1032 printk("reiserfs: write barriers turned off\n");
1037 static void handle_attrs( struct super_block *s )
1039 struct reiserfs_super_block * rs;
1041 if( reiserfs_attrs( s ) ) {
1042 rs = SB_DISK_SUPER_BLOCK (s);
1043 if( old_format_only(s) ) {
1044 reiserfs_warning(s, "reiserfs: cannot support attributes on 3.5.x disk format" );
1045 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
1048 if( !( le32_to_cpu( rs -> s_flags ) & reiserfs_attrs_cleared ) ) {
1049 reiserfs_warning(s, "reiserfs: cannot support attributes until flag is set in super-block" );
1050 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
1055 static int reiserfs_remount (struct super_block * s, int * mount_flags, char * arg)
1057 struct reiserfs_super_block * rs;
1058 struct reiserfs_transaction_handle th ;
1059 unsigned long blocks;
1060 unsigned long mount_options = REISERFS_SB(s)->s_mount_opt;
1061 unsigned long safe_mask = 0;
1062 unsigned int commit_max_age = (unsigned int)-1;
1063 struct reiserfs_journal *journal = SB_JOURNAL(s);
1069 rs = SB_DISK_SUPER_BLOCK (s);
1071 if (!reiserfs_parse_options(s, arg, &mount_options, &blocks, NULL, &commit_max_age)) {
1073 for (i = 0; i < MAXQUOTAS; i++)
1074 if (REISERFS_SB(s)->s_qf_names[i]) {
1075 kfree(REISERFS_SB(s)->s_qf_names[i]);
1076 REISERFS_SB(s)->s_qf_names[i] = NULL;
1084 /* Add options that are safe here */
1085 safe_mask |= 1 << REISERFS_SMALLTAIL;
1086 safe_mask |= 1 << REISERFS_LARGETAIL;
1087 safe_mask |= 1 << REISERFS_NO_BORDER;
1088 safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION;
1089 safe_mask |= 1 << REISERFS_HASHED_RELOCATION;
1090 safe_mask |= 1 << REISERFS_TEST4;
1091 safe_mask |= 1 << REISERFS_ATTRS;
1092 safe_mask |= 1 << REISERFS_XATTRS_USER;
1093 safe_mask |= 1 << REISERFS_POSIXACL;
1094 safe_mask |= 1 << REISERFS_BARRIER_FLUSH;
1095 safe_mask |= 1 << REISERFS_BARRIER_NONE;
1096 safe_mask |= 1 << REISERFS_ERROR_RO;
1097 safe_mask |= 1 << REISERFS_ERROR_CONTINUE;
1098 safe_mask |= 1 << REISERFS_ERROR_PANIC;
1100 /* Update the bitmask, taking care to keep
1101 * the bits we're not allowed to change here */
1102 REISERFS_SB(s)->s_mount_opt = (REISERFS_SB(s)->s_mount_opt & ~safe_mask) | (mount_options & safe_mask);
1104 if(commit_max_age != 0 && commit_max_age != (unsigned int)-1) {
1105 journal->j_max_commit_age = commit_max_age;
1106 journal->j_max_trans_age = commit_max_age;
1108 else if(commit_max_age == 0)
1110 /* 0 means restore defaults. */
1111 journal->j_max_commit_age = journal->j_default_max_commit_age;
1112 journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE;
1116 int rc = reiserfs_resize(s, blocks);
1121 if (*mount_flags & MS_RDONLY) {
1122 reiserfs_xattr_init (s, *mount_flags);
1123 /* remount read-only */
1124 if (s->s_flags & MS_RDONLY)
1125 /* it is read-only already */
1127 /* try to remount file system with read-only permissions */
1128 if (sb_umount_state(rs) == REISERFS_VALID_FS || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) {
1132 err = journal_begin(&th, s, 10) ;
1136 /* Mounting a rw partition read-only. */
1137 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
1138 set_sb_umount_state( rs, REISERFS_SB(s)->s_mount_state );
1139 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
1141 /* remount read-write */
1142 if (!(s->s_flags & MS_RDONLY)) {
1143 reiserfs_xattr_init (s, *mount_flags);
1144 return 0; /* We are read-write already */
1147 if (reiserfs_is_journal_aborted (journal))
1148 return journal->j_errno;
1150 handle_data_mode(s, mount_options);
1151 handle_barrier_mode(s, mount_options);
1152 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs) ;
1153 s->s_flags &= ~MS_RDONLY ; /* now it is safe to call journal_begin */
1154 err = journal_begin(&th, s, 10) ;
1158 /* Mount a partition which is read-only, read-write */
1159 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
1160 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
1161 s->s_flags &= ~MS_RDONLY;
1162 set_sb_umount_state( rs, REISERFS_ERROR_FS );
1163 /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */
1164 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
1165 REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS ;
1167 /* this will force a full flush of all journal lists */
1168 SB_JOURNAL(s)->j_must_wait = 1 ;
1169 err = journal_end(&th, s, 10) ;
1174 if (!( *mount_flags & MS_RDONLY ) ) {
1175 finish_unfinished( s );
1176 reiserfs_xattr_init (s, *mount_flags);
1182 /* load_bitmap_info_data - Sets up the reiserfs_bitmap_info structure from disk.
1183 * @sb - superblock for this filesystem
1184 * @bi - the bitmap info to be loaded. Requires that bi->bh is valid.
1186 * This routine counts how many free bits there are, finding the first zero
1187 * as a side effect. Could also be implemented as a loop of test_bit() calls, or
1188 * a loop of find_first_zero_bit() calls. This implementation is similar to
1189 * find_first_zero_bit(), but doesn't return after it finds the first bit.
1190 * Should only be called on fs mount, but should be fairly efficient anyways.
1192 * bi->first_zero_hint is considered unset if it == 0, since the bitmap itself
1193 * will * invariably occupt block 0 represented in the bitmap. The only
1194 * exception to this is when free_count also == 0, since there will be no
1195 * free blocks at all.
1198 static void load_bitmap_info_data (struct super_block *sb,
1199 struct reiserfs_bitmap_info *bi)
1201 unsigned long *cur = (unsigned long *)bi->bh->b_data;
1203 while ((char *)cur < (bi->bh->b_data + sb->s_blocksize)) {
1205 /* No need to scan if all 0's or all 1's.
1206 * Since we're only counting 0's, we can simply ignore all 1's */
1208 if (bi->first_zero_hint == 0) {
1209 bi->first_zero_hint = ((char *)cur - bi->bh->b_data) << 3;
1211 bi->free_count += sizeof(unsigned long)*8;
1212 } else if (*cur != ~0L) {
1214 for (b = 0; b < sizeof(unsigned long)*8; b++) {
1215 if (!reiserfs_test_le_bit (b, cur)) {
1217 if (bi->first_zero_hint == 0)
1218 bi->first_zero_hint =
1219 (((char *)cur - bi->bh->b_data) << 3) + b;
1226 #ifdef CONFIG_REISERFS_CHECK
1227 // This outputs a lot of unneded info on big FSes
1228 // reiserfs_warning ("bitmap loaded from block %d: %d free blocks",
1229 // bi->bh->b_blocknr, bi->free_count);
1233 static int read_bitmaps (struct super_block * s)
1237 SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
1238 if (SB_AP_BITMAP (s) == 0)
1240 memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
1241 for (i = 0, bmap_nr = REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1;
1242 i < SB_BMAP_NR(s); i++, bmap_nr = s->s_blocksize * 8 * i) {
1243 SB_AP_BITMAP (s)[i].bh = sb_getblk(s, bmap_nr);
1244 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh))
1245 ll_rw_block(READ, 1, &SB_AP_BITMAP(s)[i].bh);
1247 for (i = 0; i < SB_BMAP_NR(s); i++) {
1248 wait_on_buffer(SB_AP_BITMAP (s)[i].bh);
1249 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
1250 reiserfs_warning(s,"sh-2029: reiserfs read_bitmaps: "
1251 "bitmap block (#%lu) reading failed",
1252 SB_AP_BITMAP(s)[i].bh->b_blocknr);
1253 for (i = 0; i < SB_BMAP_NR(s); i++)
1254 brelse(SB_AP_BITMAP(s)[i].bh);
1255 vfree(SB_AP_BITMAP(s));
1256 SB_AP_BITMAP(s) = NULL;
1259 load_bitmap_info_data (s, SB_AP_BITMAP (s) + i);
1264 static int read_old_bitmaps (struct super_block * s)
1267 struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK(s);
1268 int bmp1 = (REISERFS_OLD_DISK_OFFSET_IN_BYTES / s->s_blocksize) + 1; /* first of bitmap blocks */
1270 /* read true bitmap */
1271 SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1272 if (SB_AP_BITMAP (s) == 0)
1275 memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1277 for (i = 0; i < sb_bmap_nr(rs); i ++) {
1278 SB_AP_BITMAP (s)[i].bh = sb_bread (s, bmp1 + i);
1279 if (!SB_AP_BITMAP (s)[i].bh)
1281 load_bitmap_info_data (s, SB_AP_BITMAP (s) + i);
1287 static int read_super_block (struct super_block * s, int offset)
1289 struct buffer_head * bh;
1290 struct reiserfs_super_block * rs;
1294 bh = sb_bread (s, offset / s->s_blocksize);
1296 reiserfs_warning (s, "sh-2006: read_super_block: "
1297 "bread failed (dev %s, block %lu, size %lu)",
1298 reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
1302 rs = (struct reiserfs_super_block *)bh->b_data;
1303 if (!is_any_reiserfs_magic_string (rs)) {
1309 // ok, reiserfs signature (old or new) found in at the given offset
1311 fs_blocksize = sb_blocksize(rs);
1313 sb_set_blocksize (s, fs_blocksize);
1315 bh = sb_bread (s, offset / s->s_blocksize);
1317 reiserfs_warning (s, "sh-2007: read_super_block: "
1318 "bread failed (dev %s, block %lu, size %lu)\n",
1319 reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
1323 rs = (struct reiserfs_super_block *)bh->b_data;
1324 if (sb_blocksize(rs) != s->s_blocksize) {
1325 reiserfs_warning (s, "sh-2011: read_super_block: "
1326 "can't find a reiserfs filesystem on (dev %s, block %Lu, size %lu)\n",
1327 reiserfs_bdevname (s), (unsigned long long)bh->b_blocknr, s->s_blocksize);
1332 if ( rs->s_v1.s_root_block == -1 ) {
1334 reiserfs_warning (s, "Unfinished reiserfsck --rebuild-tree run detected. Please run\n"
1335 "reiserfsck --rebuild-tree and wait for a completion. If that fails\n"
1336 "get newer reiserfsprogs package");
1340 SB_BUFFER_WITH_SB (s) = bh;
1341 SB_DISK_SUPER_BLOCK (s) = rs;
1343 if (is_reiserfs_jr (rs)) {
1344 /* magic is of non-standard journal filesystem, look at s_version to
1345 find which format is in use */
1346 if (sb_version(rs) == REISERFS_VERSION_2)
1347 reiserfs_warning (s, "read_super_block: found reiserfs format \"3.6\""
1348 " with non-standard journal");
1349 else if (sb_version(rs) == REISERFS_VERSION_1)
1350 reiserfs_warning (s, "read_super_block: found reiserfs format \"3.5\""
1351 " with non-standard journal");
1353 reiserfs_warning (s, "sh-2012: read_super_block: found unknown "
1354 "format \"%u\" of reiserfs with non-standard magic",
1360 /* s_version of standard format may contain incorrect information,
1361 so we just look at the magic string */
1362 reiserfs_info (s, "found reiserfs format \"%s\" with standard journal\n",
1363 is_reiserfs_3_5 (rs) ? "3.5" : "3.6");
1365 s->s_op = &reiserfs_sops;
1366 s->s_export_op = &reiserfs_export_ops;
1368 s->s_qcop = &reiserfs_qctl_operations;
1369 s->dq_op = &reiserfs_quota_operations;
1372 /* new format is limited by the 32 bit wide i_blocks field, want to
1373 ** be one full block below that.
1375 s->s_maxbytes = (512LL << 32) - s->s_blocksize ;
1381 /* after journal replay, reread all bitmap and super blocks */
1382 static int reread_meta_blocks(struct super_block *s) {
1384 ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s))) ;
1385 wait_on_buffer(SB_BUFFER_WITH_SB(s)) ;
1386 if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
1387 reiserfs_warning (s, "reread_meta_blocks, error reading the super") ;
1391 for (i = 0; i < SB_BMAP_NR(s) ; i++) {
1392 ll_rw_block(READ, 1, &(SB_AP_BITMAP(s)[i].bh)) ;
1393 wait_on_buffer(SB_AP_BITMAP(s)[i].bh) ;
1394 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
1395 reiserfs_warning (s, "reread_meta_blocks, error reading bitmap block number %d at %llu",
1396 i, (unsigned long long)SB_AP_BITMAP(s)[i].bh->b_blocknr) ;
1405 /////////////////////////////////////////////////////
1406 // hash detection stuff
1409 // if root directory is empty - we set default - Yura's - hash and
1411 // FIXME: we look for only one name in a directory. If tea and yura
1412 // bith have the same value - we ask user to send report to the
1414 static __u32 find_hash_out (struct super_block * s)
1417 struct inode * inode;
1419 INITIALIZE_PATH (path);
1420 struct reiserfs_dir_entry de;
1421 __u32 hash = DEFAULT_HASH;
1423 inode = s->s_root->d_inode;
1425 do { // Some serious "goto"-hater was there ;)
1426 u32 teahash, r5hash, yurahash;
1428 make_cpu_key (&key, inode, ~0, TYPE_DIRENTRY, 3);
1429 retval = search_by_entry_key (s, &key, &path, &de);
1430 if (retval == IO_ERROR) {
1434 if (retval == NAME_NOT_FOUND)
1436 set_de_name_and_namelen (&de);
1437 if (deh_offset( &(de.de_deh[de.de_entry_num]) ) == DOT_DOT_OFFSET) {
1438 /* allow override in this case */
1439 if (reiserfs_rupasov_hash(s)) {
1442 reiserfs_warning(s,"FS seems to be empty, autodetect "
1443 "is using the default hash");
1446 r5hash=GET_HASH_VALUE (r5_hash (de.de_name, de.de_namelen));
1447 teahash=GET_HASH_VALUE (keyed_hash (de.de_name, de.de_namelen));
1448 yurahash=GET_HASH_VALUE (yura_hash (de.de_name, de.de_namelen));
1449 if ( ( (teahash == r5hash) && (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash) ) ||
1450 ( (teahash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ||
1451 ( (r5hash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ) {
1452 reiserfs_warning(s,"Unable to automatically detect hash function. "
1453 "Please mount with -o hash={tea,rupasov,r5}",
1454 reiserfs_bdevname (s));
1458 if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == yurahash)
1460 else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == teahash)
1462 else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == r5hash)
1465 reiserfs_warning (s,"Unrecognised hash function");
1474 // finds out which hash names are sorted with
1475 static int what_hash (struct super_block * s)
1479 code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s));
1481 /* reiserfs_hash_detect() == true if any of the hash mount options
1482 ** were used. We must check them to make sure the user isn't
1483 ** using a bad hash value
1485 if (code == UNSET_HASH || reiserfs_hash_detect(s))
1486 code = find_hash_out (s);
1488 if (code != UNSET_HASH && reiserfs_hash_detect(s)) {
1489 /* detection has found the hash, and we must check against the
1492 if (reiserfs_rupasov_hash(s) && code != YURA_HASH) {
1493 reiserfs_warning (s, "Error, %s hash detected, "
1494 "unable to force rupasov hash", reiserfs_hashname(code)) ;
1496 } else if (reiserfs_tea_hash(s) && code != TEA_HASH) {
1497 reiserfs_warning (s, "Error, %s hash detected, "
1498 "unable to force tea hash", reiserfs_hashname(code)) ;
1500 } else if (reiserfs_r5_hash(s) && code != R5_HASH) {
1501 reiserfs_warning (s, "Error, %s hash detected, "
1502 "unable to force r5 hash", reiserfs_hashname(code)) ;
1506 /* find_hash_out was not called or could not determine the hash */
1507 if (reiserfs_rupasov_hash(s)) {
1509 } else if (reiserfs_tea_hash(s)) {
1511 } else if (reiserfs_r5_hash(s)) {
1516 /* if we are mounted RW, and we have a new valid hash code, update
1519 if (code != UNSET_HASH &&
1520 !(s->s_flags & MS_RDONLY) &&
1521 code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) {
1522 set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code);
1527 // return pointer to appropriate function
1528 static hashf_t hash_function (struct super_block * s)
1530 switch (what_hash (s)) {
1532 reiserfs_info (s, "Using tea hash to sort names\n");
1535 reiserfs_info (s, "Using rupasov hash to sort names\n");
1538 reiserfs_info (s, "Using r5 hash to sort names\n");
1544 // this is used to set up correct value for old partitions
1545 static int function2code (hashf_t func)
1547 if (func == keyed_hash)
1549 if (func == yura_hash)
1551 if (func == r5_hash)
1554 BUG() ; // should never happen
1559 #define SWARN(silent, s, ...) \
1561 reiserfs_warning (s, __VA_ARGS__)
1563 static int reiserfs_fill_super (struct super_block * s, void * data, int silent)
1565 struct inode *root_inode;
1567 struct reiserfs_transaction_handle th ;
1569 unsigned long blocks;
1570 unsigned int commit_max_age = 0;
1571 int jinit_done = 0 ;
1572 struct reiserfs_iget_args args ;
1573 struct reiserfs_super_block * rs;
1575 struct reiserfs_sb_info *sbi;
1576 int errval = -EINVAL;
1578 sbi = kmalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL);
1584 memset (sbi, 0, sizeof (struct reiserfs_sb_info));
1585 /* Set default values for options: non-aggressive tails, RO on errors */
1586 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_SMALLTAIL);
1587 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_ERROR_RO);
1588 /* no preallocation minimum, be smart in
1589 reiserfs_file_write instead */
1590 REISERFS_SB(s)->s_alloc_options.preallocmin = 0;
1591 /* Preallocate by 16 blocks (17-1) at once */
1592 REISERFS_SB(s)->s_alloc_options.preallocsize = 17;
1593 /* Initialize the rwsem for xattr dir */
1594 init_rwsem(&REISERFS_SB(s)->xattr_dir_sem);
1596 /* setup default block allocator options */
1597 reiserfs_init_alloc_options(s);
1600 if (reiserfs_parse_options (s, (char *) data, &(sbi->s_mount_opt), &blocks, &jdev_name, &commit_max_age) == 0) {
1605 SWARN (silent, s, "jmacd-7: reiserfs_fill_super: resize option "
1606 "for remount only");
1610 /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */
1611 if (!read_super_block (s, REISERFS_OLD_DISK_OFFSET_IN_BYTES))
1613 /* try new format (64-th 1k block), which can contain reiserfs super block */
1614 else if (read_super_block (s, REISERFS_DISK_OFFSET_IN_BYTES)) {
1615 SWARN(silent, s, "sh-2021: reiserfs_fill_super: can not find reiserfs on %s", reiserfs_bdevname (s));
1619 rs = SB_DISK_SUPER_BLOCK (s);
1620 /* Let's do basic sanity check to verify that underlying device is not
1621 smaller than the filesystem. If the check fails then abort and scream,
1622 because bad stuff will happen otherwise. */
1623 if ( s->s_bdev && s->s_bdev->bd_inode && i_size_read(s->s_bdev->bd_inode) < sb_block_count(rs)*sb_blocksize(rs)) {
1624 SWARN (silent, s, "Filesystem on %s cannot be mounted because it is bigger than the device", reiserfs_bdevname(s));
1625 SWARN(silent, s, "You may need to run fsck or increase size of your LVM partition");
1626 SWARN(silent, s, "Or may be you forgot to reboot after fdisk when it told you to");
1630 sbi->s_mount_state = SB_REISERFS_STATE(s);
1631 sbi->s_mount_state = REISERFS_VALID_FS ;
1633 if (old_format ? read_old_bitmaps(s) : read_bitmaps(s)) {
1634 SWARN(silent, s, "jmacd-8: reiserfs_fill_super: unable to read bitmap");
1637 #ifdef CONFIG_REISERFS_CHECK
1638 SWARN (silent, s, "CONFIG_REISERFS_CHECK is set ON");
1639 SWARN (silent, s, "- it is slow mode for debugging.");
1642 /* make data=ordered the default */
1643 if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) &&
1644 !reiserfs_data_writeback(s))
1646 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED);
1649 if (reiserfs_data_log(s)) {
1650 reiserfs_info (s, "using journaled data mode\n");
1651 } else if (reiserfs_data_ordered(s)) {
1652 reiserfs_info (s, "using ordered data mode\n");
1654 reiserfs_info (s, "using writeback data mode\n");
1656 if (reiserfs_barrier_flush(s)) {
1657 printk("reiserfs: using flush barriers\n");
1660 // set_device_ro(s->s_dev, 1) ;
1661 if( journal_init(s, jdev_name, old_format, commit_max_age) ) {
1662 SWARN(silent, s, "sh-2022: reiserfs_fill_super: unable to initialize journal space") ;
1665 jinit_done = 1 ; /* once this is set, journal_release must be called
1666 ** if we error out of the mount
1669 if (reread_meta_blocks(s)) {
1670 SWARN(silent, s, "jmacd-9: reiserfs_fill_super: unable to reread meta blocks after journal init") ;
1674 if (replay_only (s))
1677 if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) {
1678 SWARN(silent, s, "clm-7000: Detected readonly device, marking FS readonly") ;
1679 s->s_flags |= MS_RDONLY ;
1681 args.objectid = REISERFS_ROOT_OBJECTID ;
1682 args.dirid = REISERFS_ROOT_PARENT_OBJECTID ;
1683 root_inode = iget5_locked (s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, reiserfs_init_locked_inode, (void *)(&args));
1685 SWARN(silent, s, "jmacd-10: reiserfs_fill_super: get root inode failed");
1689 if (root_inode->i_state & I_NEW) {
1690 reiserfs_read_locked_inode(root_inode, &args);
1691 unlock_new_inode(root_inode);
1694 s->s_root = d_alloc_root(root_inode);
1700 // define and initialize hash function
1701 sbi->s_hash_function = hash_function (s);
1702 if (sbi->s_hash_function == NULL) {
1708 if (is_reiserfs_3_5 (rs) || (is_reiserfs_jr (rs) && SB_VERSION (s) == REISERFS_VERSION_1))
1709 set_bit(REISERFS_3_5, &(sbi->s_properties));
1711 set_bit(REISERFS_3_6, &(sbi->s_properties));
1713 if (!(s->s_flags & MS_RDONLY)) {
1715 errval = journal_begin(&th, s, 1) ;
1721 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
1723 set_sb_umount_state( rs, REISERFS_ERROR_FS );
1724 set_sb_fs_state (rs, 0);
1726 if (old_format_only(s)) {
1727 /* filesystem of format 3.5 either with standard or non-standard
1729 if (convert_reiserfs (s)) {
1730 /* and -o conv is given */
1732 reiserfs_info (s,"converting 3.5 filesystem to the 3.6 format") ;
1734 if (is_reiserfs_3_5 (rs))
1735 /* put magic string of 3.6 format. 2.2 will not be able to
1736 mount this filesystem anymore */
1737 memcpy (rs->s_v1.s_magic, reiserfs_3_6_magic_string,
1738 sizeof (reiserfs_3_6_magic_string));
1740 set_sb_version(rs,REISERFS_VERSION_2);
1741 reiserfs_convert_objectid_map_v1(s) ;
1742 set_bit(REISERFS_3_6, &(sbi->s_properties));
1743 clear_bit(REISERFS_3_5, &(sbi->s_properties));
1744 } else if (!silent){
1745 reiserfs_info (s, "using 3.5.x disk format\n") ;
1749 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
1750 errval = journal_end(&th, s, 1) ;
1757 if ((errval = reiserfs_xattr_init (s, s->s_flags))) {
1763 /* look for files which were to be removed in previous session */
1764 finish_unfinished (s);
1766 if ( old_format_only(s) && !silent) {
1767 reiserfs_info (s, "using 3.5.x disk format\n") ;
1770 if ((errval = reiserfs_xattr_init (s, s->s_flags))) {
1776 // mark hash in super block: it could be unset. overwrite should be ok
1777 set_sb_hash_function_code( rs, function2code(sbi->s_hash_function ) );
1781 reiserfs_proc_info_init( s );
1783 init_waitqueue_head (&(sbi->s_wait));
1784 spin_lock_init(&sbi->bitmap_lock);
1789 if (jinit_done) { /* kill the commit thread, free journal ram */
1790 journal_release_error(NULL, s) ;
1792 if (SB_DISK_SUPER_BLOCK (s)) {
1793 for (j = 0; j < SB_BMAP_NR (s); j ++) {
1794 if (SB_AP_BITMAP (s))
1795 brelse (SB_AP_BITMAP (s)[j].bh);
1797 if (SB_AP_BITMAP (s))
1798 vfree (SB_AP_BITMAP (s));
1800 if (SB_BUFFER_WITH_SB (s))
1801 brelse(SB_BUFFER_WITH_SB (s));
1803 for (j = 0; j < MAXQUOTAS; j++) {
1804 if (sbi->s_qf_names[j])
1805 kfree(sbi->s_qf_names[j]);
1812 s->s_fs_info = NULL;
1817 static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf)
1819 struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (s);
1821 buf->f_namelen = (REISERFS_MAX_NAME (s->s_blocksize));
1822 buf->f_bfree = sb_free_blocks(rs);
1823 buf->f_bavail = buf->f_bfree;
1824 buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1;
1825 buf->f_bsize = s->s_blocksize;
1826 /* changed to accommodate gcc folks.*/
1827 buf->f_type = REISERFS_SUPER_MAGIC;
1832 static int reiserfs_dquot_initialize(struct inode *inode, int type)
1834 struct reiserfs_transaction_handle th;
1837 /* We may create quota structure so we need to reserve enough blocks */
1838 reiserfs_write_lock(inode->i_sb);
1839 journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
1840 ret = dquot_initialize(inode, type);
1841 journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
1842 reiserfs_write_unlock(inode->i_sb);
1846 static int reiserfs_dquot_drop(struct inode *inode)
1848 struct reiserfs_transaction_handle th;
1851 /* We may delete quota structure so we need to reserve enough blocks */
1852 reiserfs_write_lock(inode->i_sb);
1853 journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
1854 ret = dquot_drop(inode);
1855 journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
1856 reiserfs_write_unlock(inode->i_sb);
1860 static int reiserfs_write_dquot(struct dquot *dquot)
1862 struct reiserfs_transaction_handle th;
1865 reiserfs_write_lock(dquot->dq_sb);
1866 journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS);
1867 ret = dquot_commit(dquot);
1868 journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS);
1869 reiserfs_write_unlock(dquot->dq_sb);
1873 static int reiserfs_acquire_dquot(struct dquot *dquot)
1875 struct reiserfs_transaction_handle th;
1878 reiserfs_write_lock(dquot->dq_sb);
1879 journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
1880 ret = dquot_acquire(dquot);
1881 journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
1882 reiserfs_write_unlock(dquot->dq_sb);
1886 static int reiserfs_release_dquot(struct dquot *dquot)
1888 struct reiserfs_transaction_handle th;
1891 reiserfs_write_lock(dquot->dq_sb);
1892 journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
1893 ret = dquot_release(dquot);
1894 journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
1895 reiserfs_write_unlock(dquot->dq_sb);
1899 static int reiserfs_mark_dquot_dirty(struct dquot *dquot)
1901 /* Are we journalling quotas? */
1902 if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] ||
1903 REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) {
1904 dquot_mark_dquot_dirty(dquot);
1905 return reiserfs_write_dquot(dquot);
1908 return dquot_mark_dquot_dirty(dquot);
1911 static int reiserfs_write_info(struct super_block *sb, int type)
1913 struct reiserfs_transaction_handle th;
1916 /* Data block + inode block */
1917 reiserfs_write_lock(sb);
1918 journal_begin(&th, sb, 2);
1919 ret = dquot_commit_info(sb, type);
1920 journal_end(&th, sb, 2);
1921 reiserfs_write_unlock(sb);
1926 * Turn on quotas during mount time - we need to find
1927 * the quota file and such...
1929 static int reiserfs_quota_on_mount(struct super_block *sb, int type)
1932 struct dentry *dentry;
1933 struct qstr name = { .name = REISERFS_SB(sb)->s_qf_names[type],
1935 .len = strlen(REISERFS_SB(sb)->s_qf_names[type])};
1937 dentry = lookup_hash(&name, sb->s_root);
1939 return PTR_ERR(dentry);
1940 err = vfs_quota_on_mount(type, REISERFS_SB(sb)->s_jquota_fmt, dentry);
1941 /* Now invalidate and put the dentry - quota got its own reference
1942 * to inode and dentry has at least wrong hash so we had better
1944 d_invalidate(dentry);
1950 * Standard function to be called on quota_on
1952 static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, char *path)
1955 struct nameidata nd;
1957 err = path_lookup(path, LOOKUP_FOLLOW, &nd);
1960 /* Quotafile not on the same filesystem? */
1961 if (nd.mnt->mnt_sb != sb) {
1965 /* We must not pack tails for quota files on reiserfs for quota IO to work */
1966 if (!REISERFS_I(nd.dentry->d_inode)->i_flags & i_nopack_mask) {
1967 reiserfs_warning(sb, "reiserfs: Quota file must have tail packing disabled.");
1971 /* Not journalling quota? No more tests needed... */
1972 if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] &&
1973 !REISERFS_SB(sb)->s_qf_names[GRPQUOTA]) {
1975 return vfs_quota_on(sb, type, format_id, path);
1977 /* Quotafile not of fs root? */
1978 if (nd.dentry->d_parent->d_inode != sb->s_root->d_inode)
1979 reiserfs_warning(sb, "reiserfs: Quota file not on filesystem root. "
1980 "Journalled quota will not work.");
1982 return vfs_quota_on(sb, type, format_id, path);
1985 /* Read data from quotafile - avoid pagecache and such because we cannot afford
1986 * acquiring the locks... As quota files are never truncated and quota code
1987 * itself serializes the operations (and noone else should touch the files)
1988 * we don't have to be afraid of races */
1989 static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data,
1990 size_t len, loff_t off)
1992 struct inode *inode = sb_dqopt(sb)->files[type];
1993 unsigned long blk = off >> sb->s_blocksize_bits;
1994 int err = 0, offset = off & (sb->s_blocksize - 1), tocopy;
1996 struct buffer_head tmp_bh, *bh;
1997 loff_t i_size = i_size_read(inode);
2001 if (off+len > i_size)
2004 while (toread > 0) {
2005 tocopy = sb->s_blocksize - offset < toread ? sb->s_blocksize - offset : toread;
2007 /* Quota files are without tails so we can safely use this function */
2008 reiserfs_write_lock(sb);
2009 err = reiserfs_get_block(inode, blk, &tmp_bh, 0);
2010 reiserfs_write_unlock(sb);
2013 if (!buffer_mapped(&tmp_bh)) /* A hole? */
2014 memset(data, 0, tocopy);
2016 bh = sb_bread(sb, tmp_bh.b_blocknr);
2019 memcpy(data, bh->b_data+offset, tocopy);
2030 /* Write to quotafile (we know the transaction is already started and has
2031 * enough credits) */
2032 static ssize_t reiserfs_quota_write(struct super_block *sb, int type,
2033 const char *data, size_t len, loff_t off)
2035 struct inode *inode = sb_dqopt(sb)->files[type];
2036 unsigned long blk = off >> sb->s_blocksize_bits;
2037 int err = 0, offset = off & (sb->s_blocksize - 1), tocopy;
2038 int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL;
2039 size_t towrite = len;
2040 struct buffer_head tmp_bh, *bh;
2042 down(&inode->i_sem);
2043 while (towrite > 0) {
2044 tocopy = sb->s_blocksize - offset < towrite ?
2045 sb->s_blocksize - offset : towrite;
2047 err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE);
2050 if (offset || tocopy != sb->s_blocksize)
2051 bh = sb_bread(sb, tmp_bh.b_blocknr);
2053 bh = sb_getblk(sb, tmp_bh.b_blocknr);
2059 memcpy(bh->b_data+offset, data, tocopy);
2060 flush_dcache_page(bh->b_page);
2061 set_buffer_uptodate(bh);
2063 reiserfs_prepare_for_journal(sb, bh, 1);
2064 journal_mark_dirty(current->journal_info, sb, bh);
2066 reiserfs_add_ordered_list(inode, bh);
2076 if (inode->i_size < off+len-towrite)
2077 i_size_write(inode, off+len-towrite);
2079 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
2080 mark_inode_dirty(inode);
2082 return len - towrite;
2087 static struct super_block*
2088 get_super_block (struct file_system_type *fs_type, int flags,
2089 const char *dev_name, void *data)
2091 return get_sb_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super);
2095 init_reiserfs_fs ( void )
2099 if ((ret = init_inodecache ())) {
2103 if ((ret = reiserfs_xattr_register_handlers ()))
2104 goto failed_reiserfs_xattr_register_handlers;
2106 reiserfs_proc_info_global_init ();
2107 reiserfs_proc_register_global ("version", reiserfs_global_version_in_proc);
2109 ret = register_filesystem (& reiserfs_fs_type);
2115 reiserfs_xattr_unregister_handlers ();
2117 failed_reiserfs_xattr_register_handlers:
2118 reiserfs_proc_unregister_global ("version");
2119 reiserfs_proc_info_global_done ();
2120 destroy_inodecache ();
2126 exit_reiserfs_fs ( void )
2128 reiserfs_xattr_unregister_handlers ();
2129 reiserfs_proc_unregister_global ("version");
2130 reiserfs_proc_info_global_done ();
2131 unregister_filesystem (& reiserfs_fs_type);
2132 destroy_inodecache ();
2135 struct file_system_type reiserfs_fs_type = {
2136 .owner = THIS_MODULE,
2138 .get_sb = get_super_block,
2139 .kill_sb = kill_block_super,
2140 .fs_flags = FS_REQUIRES_DEV,
2143 MODULE_DESCRIPTION ("ReiserFS journaled filesystem");
2144 MODULE_AUTHOR ("Hans Reiser <reiser@namesys.com>");
2145 MODULE_LICENSE ("GPL");
2147 module_init (init_reiserfs_fs);
2148 module_exit (exit_reiserfs_fs);