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 in_core_key MAX_IN_CORE_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.k_dir_id = ~0U;
168 max_cpu_key.on_disk_key.k_objectid = ~0U;
169 set_cpu_key_k_offset (&max_cpu_key, ~0U);
170 max_cpu_key.key_length = 3;
173 /* Needed for iput() to work correctly and not trash data */
174 if (s->s_flags & MS_ACTIVE) {
178 s->s_flags |= MS_ACTIVE;
180 /* Turn on quotas so that they are updated correctly */
181 for (i = 0; i < MAXQUOTAS; i++) {
182 if (REISERFS_SB(s)->s_qf_names[i]) {
183 int ret = reiserfs_quota_on_mount(s, i);
185 reiserfs_warning(s, "reiserfs: cannot turn on journalled quota: error %d", ret);
191 REISERFS_SB(s)->s_is_unlinked_ok = 1;
193 retval = search_item (s, &max_cpu_key, &path);
194 if (retval != ITEM_NOT_FOUND) {
195 reiserfs_warning (s, "vs-2140: finish_unfinished: search_by_key returned %d",
200 bh = get_last_bh (&path);
201 item_pos = get_item_pos (&path);
202 if (item_pos != B_NR_ITEMS (bh)) {
203 reiserfs_warning (s, "vs-2060: finish_unfinished: wrong position found");
207 ih = B_N_PITEM_HEAD (bh, item_pos);
209 if (le32_to_cpu (ih->ih_key.k_dir_id) != MAX_KEY_OBJECTID)
210 /* there are no "save" links anymore */
213 save_link_key = ih->ih_key;
214 if (is_indirect_le_ih (ih))
219 /* reiserfs_iget needs k_dirid and k_objectid only */
220 item = B_I_PITEM (bh, ih);
221 obj_key.on_disk_key.k_dir_id = le32_to_cpu (*(__le32 *)item);
222 obj_key.on_disk_key.k_objectid = le32_to_cpu (ih->ih_key.k_objectid);
223 obj_key.on_disk_key.k_offset = 0;
224 obj_key.on_disk_key.k_type = 0;
228 inode = reiserfs_iget (s, &obj_key);
230 /* the unlink almost completed, it just did not manage to remove
231 "save" link and release objectid */
232 reiserfs_warning (s, "vs-2180: finish_unfinished: iget failed for %K",
234 retval = remove_save_link_only (s, &save_link_key, 1);
238 if (!truncate && inode->i_nlink) {
239 /* file is not unlinked */
240 reiserfs_warning (s, "vs-2185: finish_unfinished: file %K is not unlinked",
242 retval = remove_save_link_only (s, &save_link_key, 0);
247 if (truncate && S_ISDIR (inode->i_mode) ) {
248 /* We got a truncate request for a dir which is impossible.
249 The only imaginable way is to execute unfinished truncate request
250 then boot into old kernel, remove the file and create dir with
252 reiserfs_warning(s, "green-2101: impossible truncate on a directory %k. Please report", INODE_PKEY (inode));
253 retval = remove_save_link_only (s, &save_link_key, 0);
260 REISERFS_I(inode) -> i_flags |= i_link_saved_truncate_mask;
261 /* not completed truncate found. New size was committed together
263 reiserfs_info (s, "Truncating %k to %Ld ..",
264 INODE_PKEY (inode), inode->i_size);
265 reiserfs_truncate_file (inode, 0/*don't update modification time*/);
266 retval = remove_save_link (inode, truncate);
268 REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask;
269 /* not completed unlink (rmdir) found */
270 reiserfs_info (s, "Removing %k..", INODE_PKEY (inode));
271 /* removal gets completed in iput */
279 REISERFS_SB(s)->s_is_unlinked_ok = 0;
282 /* Turn quotas off */
283 for (i = 0; i < MAXQUOTAS; i++) {
284 if (sb_dqopt(s)->files[i])
285 vfs_quota_off_mount(s, i);
288 /* Restore the flag back */
289 s->s_flags &= ~MS_ACTIVE;
293 reiserfs_info (s, "There were %d uncompleted unlinks/truncates. "
294 "Completed\n", done);
298 /* to protect file being unlinked from getting lost we "safe" link files
299 being unlinked. This link will be deleted in the same transaction with last
300 item of file. mounting the filesytem we scan all these links and remove
301 files which almost got lost */
302 void add_save_link (struct reiserfs_transaction_handle * th,
303 struct inode * inode, int truncate)
305 INITIALIZE_PATH (path);
311 BUG_ON (!th->t_trans_id);
313 /* file can only get one "save link" of each kind */
315 ( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ),
316 "saved link already exists for truncated inode %lx",
317 ( long ) inode -> i_ino );
319 ( REISERFS_I(inode) -> i_flags & i_link_saved_unlink_mask ),
320 "saved link already exists for unlinked inode %lx",
321 ( long ) inode -> i_ino );
323 /* setup key of "save" link */
324 key.version = KEY_FORMAT_3_5;
325 key.on_disk_key.k_dir_id = MAX_KEY_OBJECTID;
326 key.on_disk_key.k_objectid = inode->i_ino;
328 /* unlink, rmdir, rename */
329 set_cpu_key_k_offset (&key, 1 + inode->i_sb->s_blocksize);
330 set_cpu_key_k_type (&key, TYPE_DIRECT);
332 /* item head of "safe" link */
333 make_le_item_head (&ih, &key, key.version, 1 + inode->i_sb->s_blocksize, TYPE_DIRECT,
334 4/*length*/, 0xffff/*free space*/);
337 if (S_ISDIR (inode->i_mode))
338 reiserfs_warning(inode->i_sb, "green-2102: Adding a truncate savelink for a directory %k! Please report", INODE_PKEY(inode));
339 set_cpu_key_k_offset (&key, 1);
340 set_cpu_key_k_type (&key, TYPE_INDIRECT);
342 /* item head of "safe" link */
343 make_le_item_head (&ih, &key, key.version, 1, TYPE_INDIRECT,
344 4/*length*/, 0/*free space*/);
348 /* look for its place in the tree */
349 retval = search_item (inode->i_sb, &key, &path);
350 if (retval != ITEM_NOT_FOUND) {
351 if ( retval != -ENOSPC )
352 reiserfs_warning (inode->i_sb, "vs-2100: add_save_link:"
353 "search_by_key (%K) returned %d", &key, retval);
358 /* body of "save" link */
359 link = INODE_PKEY (inode)->k_dir_id;
361 /* put "save" link inot tree, don't charge quota to anyone */
362 retval = reiserfs_insert_item (th, &path, &key, &ih, NULL, (char *)&link);
364 if (retval != -ENOSPC)
365 reiserfs_warning (inode->i_sb, "vs-2120: add_save_link: insert_item returned %d",
369 REISERFS_I(inode) -> i_flags |= i_link_saved_truncate_mask;
371 REISERFS_I(inode) -> i_flags |= i_link_saved_unlink_mask;
376 /* this opens transaction unlike add_save_link */
377 int remove_save_link (struct inode * inode, int truncate)
379 struct reiserfs_transaction_handle th;
380 struct reiserfs_key key;
383 /* we are going to do one balancing only */
384 err = journal_begin (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
388 /* setup key of "save" link */
389 key.k_dir_id = cpu_to_le32 (MAX_KEY_OBJECTID);
390 key.k_objectid = INODE_PKEY (inode)->k_objectid;
392 /* unlink, rmdir, rename */
393 set_le_key_k_offset (KEY_FORMAT_3_5, &key,
394 1 + inode->i_sb->s_blocksize);
395 set_le_key_k_type (KEY_FORMAT_3_5, &key, TYPE_DIRECT);
398 set_le_key_k_offset (KEY_FORMAT_3_5, &key, 1);
399 set_le_key_k_type (KEY_FORMAT_3_5, &key, TYPE_INDIRECT);
403 ( REISERFS_I(inode) -> i_flags & i_link_saved_truncate_mask ) ) ||
405 ( REISERFS_I(inode) -> i_flags & i_link_saved_unlink_mask ) ) )
406 /* don't take quota bytes from anywhere */
407 reiserfs_delete_solid_item (&th, NULL, &key);
409 reiserfs_release_objectid (&th, inode->i_ino);
410 REISERFS_I(inode) -> i_flags &= ~i_link_saved_unlink_mask;
412 REISERFS_I(inode) -> i_flags &= ~i_link_saved_truncate_mask;
414 return journal_end (&th, inode->i_sb, JOURNAL_PER_BALANCE_CNT);
418 static void reiserfs_put_super (struct super_block * s)
421 struct reiserfs_transaction_handle th ;
424 if (REISERFS_SB(s)->xattr_root) {
425 d_invalidate (REISERFS_SB(s)->xattr_root);
426 dput (REISERFS_SB(s)->xattr_root);
429 if (REISERFS_SB(s)->priv_root) {
430 d_invalidate (REISERFS_SB(s)->priv_root);
431 dput (REISERFS_SB(s)->priv_root);
434 /* change file system state to current state if it was mounted with read-write permissions */
435 if (!(s->s_flags & MS_RDONLY)) {
436 if (!journal_begin(&th, s, 10)) {
437 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
438 set_sb_umount_state( SB_DISK_SUPER_BLOCK(s), REISERFS_SB(s)->s_mount_state );
439 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
443 /* note, journal_release checks for readonly mount, and can decide not
444 ** to do a journal_end
446 journal_release(&th, s) ;
448 for (i = 0; i < SB_BMAP_NR (s); i ++)
449 brelse (SB_AP_BITMAP (s)[i].bh);
451 vfree (SB_AP_BITMAP (s));
453 brelse (SB_BUFFER_WITH_SB (s));
455 print_statistics (s);
457 if (REISERFS_SB(s)->s_kmallocs != 0) {
458 reiserfs_warning (s, "vs-2004: reiserfs_put_super: allocated memory left %d",
459 REISERFS_SB(s)->s_kmallocs);
462 if (REISERFS_SB(s)->reserved_blocks != 0) {
463 reiserfs_warning (s, "green-2005: reiserfs_put_super: reserved blocks left %d",
464 REISERFS_SB(s)->reserved_blocks);
467 reiserfs_proc_info_done( s );
475 static kmem_cache_t * reiserfs_inode_cachep;
477 static struct inode *reiserfs_alloc_inode(struct super_block *sb)
479 struct reiserfs_inode_info *ei;
480 ei = (struct reiserfs_inode_info *)kmem_cache_alloc(reiserfs_inode_cachep, SLAB_KERNEL);
483 return &ei->vfs_inode;
486 static void reiserfs_destroy_inode(struct inode *inode)
488 kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode));
491 static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
493 struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *) foo;
495 if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
496 SLAB_CTOR_CONSTRUCTOR) {
497 INIT_LIST_HEAD(&ei->i_prealloc_list) ;
498 inode_init_once(&ei->vfs_inode);
499 ei->i_acl_access = NULL;
500 ei->i_acl_default = NULL;
504 static int init_inodecache(void)
506 reiserfs_inode_cachep = kmem_cache_create("reiser_inode_cache",
507 sizeof(struct reiserfs_inode_info),
508 0, SLAB_RECLAIM_ACCOUNT,
510 if (reiserfs_inode_cachep == NULL)
515 static void destroy_inodecache(void)
517 if (kmem_cache_destroy(reiserfs_inode_cachep))
518 reiserfs_warning (NULL, "reiserfs_inode_cache: not all structures were freed");
521 /* we don't mark inodes dirty, we just log them */
522 static void reiserfs_dirty_inode (struct inode * inode) {
523 struct reiserfs_transaction_handle th ;
526 if (inode->i_sb->s_flags & MS_RDONLY) {
527 reiserfs_warning(inode->i_sb, "clm-6006: writing inode %lu on readonly FS",
531 reiserfs_write_lock(inode->i_sb);
533 /* this is really only used for atime updates, so they don't have
534 ** to be included in O_SYNC or fsync
536 err = journal_begin(&th, inode->i_sb, 1) ;
538 reiserfs_write_unlock (inode->i_sb);
541 reiserfs_update_sd (&th, inode);
542 journal_end(&th, inode->i_sb, 1) ;
543 reiserfs_write_unlock(inode->i_sb);
546 static void reiserfs_clear_inode (struct inode *inode)
548 struct posix_acl *acl;
550 acl = REISERFS_I(inode)->i_acl_access;
551 if (acl && !IS_ERR (acl))
552 posix_acl_release (acl);
553 REISERFS_I(inode)->i_acl_access = NULL;
555 acl = REISERFS_I(inode)->i_acl_default;
556 if (acl && !IS_ERR (acl))
557 posix_acl_release (acl);
558 REISERFS_I(inode)->i_acl_default = NULL;
562 static ssize_t reiserfs_quota_write(struct super_block *, int, const char *, size_t, loff_t);
563 static ssize_t reiserfs_quota_read(struct super_block *, int, char *, size_t, loff_t);
566 static struct super_operations reiserfs_sops =
568 .alloc_inode = reiserfs_alloc_inode,
569 .destroy_inode = reiserfs_destroy_inode,
570 .write_inode = reiserfs_write_inode,
571 .dirty_inode = reiserfs_dirty_inode,
572 .delete_inode = reiserfs_delete_inode,
573 .clear_inode = reiserfs_clear_inode,
574 .put_super = reiserfs_put_super,
575 .write_super = reiserfs_write_super,
576 .sync_fs = reiserfs_sync_fs,
577 .write_super_lockfs = reiserfs_write_super_lockfs,
578 .unlockfs = reiserfs_unlockfs,
579 .statfs = reiserfs_statfs,
580 .remount_fs = reiserfs_remount,
582 .quota_read = reiserfs_quota_read,
583 .quota_write = reiserfs_quota_write,
588 #define QTYPE2NAME(t) ((t)==USRQUOTA?"user":"group")
590 static int reiserfs_dquot_initialize(struct inode *, int);
591 static int reiserfs_dquot_drop(struct inode *);
592 static int reiserfs_write_dquot(struct dquot *);
593 static int reiserfs_acquire_dquot(struct dquot *);
594 static int reiserfs_release_dquot(struct dquot *);
595 static int reiserfs_mark_dquot_dirty(struct dquot *);
596 static int reiserfs_write_info(struct super_block *, int);
597 static int reiserfs_quota_on(struct super_block *, int, int, char *);
599 static struct dquot_operations reiserfs_quota_operations =
601 .initialize = reiserfs_dquot_initialize,
602 .drop = reiserfs_dquot_drop,
603 .alloc_space = dquot_alloc_space,
604 .alloc_inode = dquot_alloc_inode,
605 .free_space = dquot_free_space,
606 .free_inode = dquot_free_inode,
607 .transfer = dquot_transfer,
608 .write_dquot = reiserfs_write_dquot,
609 .acquire_dquot = reiserfs_acquire_dquot,
610 .release_dquot = reiserfs_release_dquot,
611 .mark_dirty = reiserfs_mark_dquot_dirty,
612 .write_info = reiserfs_write_info,
615 static struct quotactl_ops reiserfs_qctl_operations =
617 .quota_on = reiserfs_quota_on,
618 .quota_off = vfs_quota_off,
619 .quota_sync = vfs_quota_sync,
620 .get_info = vfs_get_dqinfo,
621 .set_info = vfs_set_dqinfo,
622 .get_dqblk = vfs_get_dqblk,
623 .set_dqblk = vfs_set_dqblk,
627 static struct export_operations reiserfs_export_ops = {
628 .encode_fh = reiserfs_encode_fh,
629 .decode_fh = reiserfs_decode_fh,
630 .get_parent = reiserfs_get_parent,
631 .get_dentry = reiserfs_get_dentry,
634 /* this struct is used in reiserfs_getopt () for containing the value for those
635 mount options that have values rather than being toggles. */
638 int setmask; /* bitmask which is to set on mount_options bitmask when this
639 value is found, 0 is no bits are to be changed. */
640 int clrmask; /* bitmask which is to clear on mount_options bitmask when this
641 value is found, 0 is no bits are to be changed. This is
642 applied BEFORE setmask */
645 /* Set this bit in arg_required to allow empty arguments */
646 #define REISERFS_OPT_ALLOWEMPTY 31
648 /* this struct is used in reiserfs_getopt() for describing the set of reiserfs
652 int arg_required; /* 0 if argument is not required, not 0 otherwise */
653 const arg_desc_t * values; /* list of values accepted by an option */
654 int setmask; /* bitmask which is to set on mount_options bitmask when this
655 value is found, 0 is no bits are to be changed. */
656 int clrmask; /* bitmask which is to clear on mount_options bitmask when this
657 value is found, 0 is no bits are to be changed. This is
658 applied BEFORE setmask */
661 /* possible values for -o data= */
662 static const arg_desc_t logging_mode[] = {
663 {"ordered", 1<<REISERFS_DATA_ORDERED, (1<<REISERFS_DATA_LOG|1<<REISERFS_DATA_WRITEBACK)},
664 {"journal", 1<<REISERFS_DATA_LOG, (1<<REISERFS_DATA_ORDERED|1<<REISERFS_DATA_WRITEBACK)},
665 {"writeback", 1<<REISERFS_DATA_WRITEBACK, (1<<REISERFS_DATA_ORDERED|1<<REISERFS_DATA_LOG)},
669 /* possible values for -o barrier= */
670 static const arg_desc_t barrier_mode[] = {
671 {"none", 1<<REISERFS_BARRIER_NONE, 1<<REISERFS_BARRIER_FLUSH},
672 {"flush", 1<<REISERFS_BARRIER_FLUSH, 1<<REISERFS_BARRIER_NONE},
676 /* possible values for "-o block-allocator=" and bits which are to be set in
677 s_mount_opt of reiserfs specific part of in-core super block */
678 static const arg_desc_t balloc[] = {
679 {"noborder", 1<<REISERFS_NO_BORDER, 0},
680 {"border", 0, 1<<REISERFS_NO_BORDER},
681 {"no_unhashed_relocation", 1<<REISERFS_NO_UNHASHED_RELOCATION, 0},
682 {"hashed_relocation", 1<<REISERFS_HASHED_RELOCATION, 0},
683 {"test4", 1<<REISERFS_TEST4, 0},
684 {"notest4", 0, 1<<REISERFS_TEST4},
688 static const arg_desc_t tails[] = {
689 {"on", 1<<REISERFS_LARGETAIL, 1<<REISERFS_SMALLTAIL},
690 {"off", 0, (1<<REISERFS_LARGETAIL)|(1<<REISERFS_SMALLTAIL)},
691 {"small", 1<<REISERFS_SMALLTAIL, 1<<REISERFS_LARGETAIL},
695 static const arg_desc_t error_actions[] = {
696 {"panic", 1 << REISERFS_ERROR_PANIC,
697 (1 << REISERFS_ERROR_RO | 1 << REISERFS_ERROR_CONTINUE)},
698 {"ro-remount", 1 << REISERFS_ERROR_RO,
699 (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_CONTINUE)},
700 #ifdef REISERFS_JOURNAL_ERROR_ALLOWS_NO_LOG
701 {"continue", 1 << REISERFS_ERROR_CONTINUE,
702 (1 << REISERFS_ERROR_PANIC | 1 << REISERFS_ERROR_RO)},
707 int reiserfs_default_io_size = 128 * 1024; /* Default recommended I/O size is 128k.
708 There might be broken applications that are
709 confused by this. Use nolargeio mount option
710 to get usual i/o size = PAGE_SIZE.
713 /* proceed only one option from a list *cur - string containing of mount options
714 opts - array of options which are accepted
715 opt_arg - if option is found and requires an argument and if it is specifed
716 in the input - pointer to the argument is stored here
717 bit_flags - if option requires to set a certain bit - it is set here
718 return -1 if unknown option is found, opt->arg_required otherwise */
719 static int reiserfs_getopt ( struct super_block * s, char ** cur, opt_desc_t * opts, char ** opt_arg,
720 unsigned long * bit_flags)
729 const opt_desc_t * opt;
730 const arg_desc_t * arg;
735 /* assume argument cannot contain commas */
736 *cur = strchr (p, ',');
742 if ( !strncmp (p, "alloc=", 6) ) {
743 /* Ugly special case, probably we should redo options parser so that
744 it can understand several arguments for some options, also so that
745 it can fill several bitfields with option values. */
746 if ( reiserfs_parse_alloc_options( s, p + 6) ) {
754 /* for every option in the list */
755 for (opt = opts; opt->option_name; opt ++) {
756 if (!strncmp (p, opt->option_name, strlen (opt->option_name))) {
758 if (opt->clrmask == (1 << REISERFS_UNSUPPORTED_OPT))
759 reiserfs_warning (s, "%s not supported.", p);
761 *bit_flags &= ~opt->clrmask;
762 if (opt->setmask == (1 << REISERFS_UNSUPPORTED_OPT))
763 reiserfs_warning (s, "%s not supported.", p);
765 *bit_flags |= opt->setmask;
770 if (!opt->option_name) {
771 reiserfs_warning (s, "unknown mount option \"%s\"", p);
775 p += strlen (opt->option_name);
778 if (!opt->arg_required) {
779 reiserfs_warning (s, "the option \"%s\" does not require an argument",
786 if (opt->arg_required) {
787 reiserfs_warning (s, "the option \"%s\" requires an argument", opt->option_name);
792 reiserfs_warning (s, "head of option \"%s\" is only correct", opt->option_name);
796 /* move to the argument, or to next option if argument is not required */
799 if ( opt->arg_required && !(opt->arg_required & (1<<REISERFS_OPT_ALLOWEMPTY)) && !strlen (p) ) {
800 /* this catches "option=," if not allowed */
801 reiserfs_warning (s, "empty argument for \"%s\"", opt->option_name);
806 /* *=NULLopt_arg contains pointer to argument */
808 return opt->arg_required & ~(1<<REISERFS_OPT_ALLOWEMPTY);
811 /* values possible for this option are listed in opt->values */
812 for (arg = opt->values; arg->value; arg ++) {
813 if (!strcmp (p, arg->value)) {
815 *bit_flags &= ~arg->clrmask;
816 *bit_flags |= arg->setmask;
818 return opt->arg_required;
822 reiserfs_warning (s, "bad value \"%s\" for option \"%s\"", p, opt->option_name);
826 /* returns 0 if something is wrong in option string, 1 - otherwise */
827 static int reiserfs_parse_options (struct super_block * s, char * options, /* string given via mount's -o */
828 unsigned long * mount_options,
829 /* after the parsing phase, contains the
830 collection of bitflags defining what
831 mount options were selected. */
832 unsigned long * blocks, /* strtol-ed from NNN of resize=NNN */
834 unsigned int * commit_max_age)
839 opt_desc_t opts[] = {
840 /* Compatibility stuff, so that -o notail for old setups still work */
841 {"tails", .arg_required = 't', .values = tails},
842 {"notail", .clrmask = (1<<REISERFS_LARGETAIL)|(1<<REISERFS_SMALLTAIL)},
843 {"conv", .setmask = 1<<REISERFS_CONVERT},
844 {"attrs", .setmask = 1<<REISERFS_ATTRS},
845 {"noattrs", .clrmask = 1<<REISERFS_ATTRS},
846 #ifdef CONFIG_REISERFS_FS_XATTR
847 {"user_xattr", .setmask = 1<<REISERFS_XATTRS_USER},
848 {"nouser_xattr",.clrmask = 1<<REISERFS_XATTRS_USER},
850 {"user_xattr", .setmask = 1<<REISERFS_UNSUPPORTED_OPT},
851 {"nouser_xattr",.clrmask = 1<<REISERFS_UNSUPPORTED_OPT},
853 #ifdef CONFIG_REISERFS_FS_POSIX_ACL
854 {"acl", .setmask = 1<<REISERFS_POSIXACL},
855 {"noacl", .clrmask = 1<<REISERFS_POSIXACL},
857 {"acl", .setmask = 1<<REISERFS_UNSUPPORTED_OPT},
858 {"noacl", .clrmask = 1<<REISERFS_UNSUPPORTED_OPT},
860 {"nolog",}, /* This is unsupported */
861 {"replayonly", .setmask = 1<<REPLAYONLY},
862 {"block-allocator", .arg_required = 'a', .values = balloc},
863 {"data", .arg_required = 'd', .values = logging_mode},
864 {"barrier", .arg_required = 'b', .values = barrier_mode},
865 {"resize", .arg_required = 'r', .values = NULL},
866 {"jdev", .arg_required = 'j', .values = NULL},
867 {"nolargeio", .arg_required = 'w', .values = NULL},
868 {"commit", .arg_required = 'c', .values = NULL},
871 {"errors", .arg_required = 'e', .values = error_actions},
872 {"usrjquota", .arg_required = 'u'|(1<<REISERFS_OPT_ALLOWEMPTY), .values = NULL},
873 {"grpjquota", .arg_required = 'g'|(1<<REISERFS_OPT_ALLOWEMPTY), .values = NULL},
874 {"jqfmt", .arg_required = 'f', .values = NULL},
879 if (!options || !*options)
880 /* use default configuration: create tails, journaling on, no
881 conversion to newest format */
884 for (pos = options; pos; ) {
885 c = reiserfs_getopt (s, &pos, opts, &arg, mount_options);
887 /* wrong option is given */
894 /* "resize=NNN" or "resize=auto" */
896 if (!strcmp(arg, "auto")) {
897 /* From JFS code, to auto-get the size.*/
898 *blocks = s->s_bdev->bd_inode->i_size >> s->s_blocksize_bits;
900 *blocks = simple_strtoul (arg, &p, 0);
902 /* NNN does not look like a number */
903 reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg);
911 unsigned long val = simple_strtoul (arg, &p, 0);
912 /* commit=NNN (time in seconds) */
913 if ( *p != '\0' || val >= (unsigned int)-1) {
914 reiserfs_warning (s, "reiserfs_parse_options: bad value %s", arg);
917 *commit_max_age = (unsigned int)val;
922 int val = simple_strtoul (arg, &p, 0);
925 reiserfs_warning (s, "reiserfs_parse_options: non-numeric value %s for nolargeio option", arg);
929 reiserfs_default_io_size = PAGE_SIZE;
931 reiserfs_default_io_size = 128 * 1024;
935 if (arg && *arg && jdev_name) {
936 if ( *jdev_name ) { //Hm, already assigned?
937 reiserfs_warning (s, "reiserfs_parse_options: journal device was already specified to be %s", *jdev_name);
945 if (c == 'u' || c == 'g') {
946 int qtype = c == 'u' ? USRQUOTA : GRPQUOTA;
948 if (sb_any_quota_enabled(s)) {
949 reiserfs_warning(s, "reiserfs_parse_options: cannot change journalled quota options when quota turned on.");
952 if (*arg) { /* Some filename specified? */
953 if (REISERFS_SB(s)->s_qf_names[qtype] && strcmp(REISERFS_SB(s)->s_qf_names[qtype], arg)) {
954 reiserfs_warning(s, "reiserfs_parse_options: %s quota file already specified.", QTYPE2NAME(qtype));
957 if (strchr(arg, '/')) {
958 reiserfs_warning(s, "reiserfs_parse_options: quotafile must be on filesystem root.");
961 REISERFS_SB(s)->s_qf_names[qtype] = kmalloc(strlen(arg)+1, GFP_KERNEL);
962 if (!REISERFS_SB(s)->s_qf_names[qtype]) {
963 reiserfs_warning(s, "reiserfs_parse_options: not enough memory for storing quotafile name.");
966 strcpy(REISERFS_SB(s)->s_qf_names[qtype], arg);
969 if (REISERFS_SB(s)->s_qf_names[qtype]) {
970 kfree(REISERFS_SB(s)->s_qf_names[qtype]);
971 REISERFS_SB(s)->s_qf_names[qtype] = NULL;
976 if (!strcmp(arg, "vfsold"))
977 REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_OLD;
978 else if (!strcmp(arg, "vfsv0"))
979 REISERFS_SB(s)->s_jquota_fmt = QFMT_VFS_V0;
981 reiserfs_warning(s, "reiserfs_parse_options: unknown quota format specified.");
986 if (c == 'u' || c == 'g' || c == 'f') {
987 reiserfs_warning(s, "reiserfs_parse_options: journalled quota options not supported.");
994 if (!REISERFS_SB(s)->s_jquota_fmt && (REISERFS_SB(s)->s_qf_names[USRQUOTA] || REISERFS_SB(s)->s_qf_names[GRPQUOTA])) {
995 reiserfs_warning(s, "reiserfs_parse_options: journalled quota format not specified.");
1002 static void switch_data_mode(struct super_block *s, unsigned long mode) {
1003 REISERFS_SB(s)->s_mount_opt &= ~((1 << REISERFS_DATA_LOG) |
1004 (1 << REISERFS_DATA_ORDERED) |
1005 (1 << REISERFS_DATA_WRITEBACK));
1006 REISERFS_SB(s)->s_mount_opt |= (1 << mode);
1009 static void handle_data_mode(struct super_block *s, unsigned long mount_options)
1011 if (mount_options & (1 << REISERFS_DATA_LOG)) {
1012 if (!reiserfs_data_log(s)) {
1013 switch_data_mode(s, REISERFS_DATA_LOG);
1014 reiserfs_info (s, "switching to journaled data mode\n");
1016 } else if (mount_options & (1 << REISERFS_DATA_ORDERED)) {
1017 if (!reiserfs_data_ordered(s)) {
1018 switch_data_mode(s, REISERFS_DATA_ORDERED);
1019 reiserfs_info (s, "switching to ordered data mode\n");
1021 } else if (mount_options & (1 << REISERFS_DATA_WRITEBACK)) {
1022 if (!reiserfs_data_writeback(s)) {
1023 switch_data_mode(s, REISERFS_DATA_WRITEBACK);
1024 reiserfs_info (s, "switching to writeback data mode\n");
1029 static void handle_barrier_mode(struct super_block *s, unsigned long bits) {
1030 int flush = (1 << REISERFS_BARRIER_FLUSH);
1031 int none = (1 << REISERFS_BARRIER_NONE);
1032 int all_barrier = flush | none;
1034 if (bits & all_barrier) {
1035 REISERFS_SB(s)->s_mount_opt &= ~all_barrier;
1037 REISERFS_SB(s)->s_mount_opt |= flush;
1038 printk("reiserfs: enabling write barrier flush mode\n");
1039 } else if (bits & none) {
1040 REISERFS_SB(s)->s_mount_opt |= none;
1041 printk("reiserfs: write barriers turned off\n");
1046 static void handle_attrs( struct super_block *s )
1048 struct reiserfs_super_block * rs;
1050 if( reiserfs_attrs( s ) ) {
1051 rs = SB_DISK_SUPER_BLOCK (s);
1052 if( old_format_only(s) ) {
1053 reiserfs_warning(s, "reiserfs: cannot support attributes on 3.5.x disk format" );
1054 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
1057 if( !( le32_to_cpu( rs -> s_flags ) & reiserfs_attrs_cleared ) ) {
1058 reiserfs_warning(s, "reiserfs: cannot support attributes until flag is set in super-block" );
1059 REISERFS_SB(s) -> s_mount_opt &= ~ ( 1 << REISERFS_ATTRS );
1064 static int reiserfs_remount (struct super_block * s, int * mount_flags, char * arg)
1066 struct reiserfs_super_block * rs;
1067 struct reiserfs_transaction_handle th ;
1068 unsigned long blocks;
1069 unsigned long mount_options = REISERFS_SB(s)->s_mount_opt;
1070 unsigned long safe_mask = 0;
1071 unsigned int commit_max_age = (unsigned int)-1;
1072 struct reiserfs_journal *journal = SB_JOURNAL(s);
1078 rs = SB_DISK_SUPER_BLOCK (s);
1080 if (!reiserfs_parse_options(s, arg, &mount_options, &blocks, NULL, &commit_max_age)) {
1082 for (i = 0; i < MAXQUOTAS; i++)
1083 if (REISERFS_SB(s)->s_qf_names[i]) {
1084 kfree(REISERFS_SB(s)->s_qf_names[i]);
1085 REISERFS_SB(s)->s_qf_names[i] = NULL;
1093 /* Add options that are safe here */
1094 safe_mask |= 1 << REISERFS_SMALLTAIL;
1095 safe_mask |= 1 << REISERFS_LARGETAIL;
1096 safe_mask |= 1 << REISERFS_NO_BORDER;
1097 safe_mask |= 1 << REISERFS_NO_UNHASHED_RELOCATION;
1098 safe_mask |= 1 << REISERFS_HASHED_RELOCATION;
1099 safe_mask |= 1 << REISERFS_TEST4;
1100 safe_mask |= 1 << REISERFS_ATTRS;
1101 safe_mask |= 1 << REISERFS_XATTRS_USER;
1102 safe_mask |= 1 << REISERFS_POSIXACL;
1103 safe_mask |= 1 << REISERFS_BARRIER_FLUSH;
1104 safe_mask |= 1 << REISERFS_BARRIER_NONE;
1105 safe_mask |= 1 << REISERFS_ERROR_RO;
1106 safe_mask |= 1 << REISERFS_ERROR_CONTINUE;
1107 safe_mask |= 1 << REISERFS_ERROR_PANIC;
1109 /* Update the bitmask, taking care to keep
1110 * the bits we're not allowed to change here */
1111 REISERFS_SB(s)->s_mount_opt = (REISERFS_SB(s)->s_mount_opt & ~safe_mask) | (mount_options & safe_mask);
1113 if(commit_max_age != 0 && commit_max_age != (unsigned int)-1) {
1114 journal->j_max_commit_age = commit_max_age;
1115 journal->j_max_trans_age = commit_max_age;
1117 else if(commit_max_age == 0)
1119 /* 0 means restore defaults. */
1120 journal->j_max_commit_age = journal->j_default_max_commit_age;
1121 journal->j_max_trans_age = JOURNAL_MAX_TRANS_AGE;
1125 int rc = reiserfs_resize(s, blocks);
1130 if (*mount_flags & MS_RDONLY) {
1131 reiserfs_xattr_init (s, *mount_flags);
1132 /* remount read-only */
1133 if (s->s_flags & MS_RDONLY)
1134 /* it is read-only already */
1136 /* try to remount file system with read-only permissions */
1137 if (sb_umount_state(rs) == REISERFS_VALID_FS || REISERFS_SB(s)->s_mount_state != REISERFS_VALID_FS) {
1141 err = journal_begin(&th, s, 10) ;
1145 /* Mounting a rw partition read-only. */
1146 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
1147 set_sb_umount_state( rs, REISERFS_SB(s)->s_mount_state );
1148 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
1150 /* remount read-write */
1151 if (!(s->s_flags & MS_RDONLY)) {
1152 reiserfs_xattr_init (s, *mount_flags);
1153 return 0; /* We are read-write already */
1156 if (reiserfs_is_journal_aborted (journal))
1157 return journal->j_errno;
1159 handle_data_mode(s, mount_options);
1160 handle_barrier_mode(s, mount_options);
1161 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs) ;
1162 s->s_flags &= ~MS_RDONLY ; /* now it is safe to call journal_begin */
1163 err = journal_begin(&th, s, 10) ;
1167 /* Mount a partition which is read-only, read-write */
1168 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
1169 REISERFS_SB(s)->s_mount_state = sb_umount_state(rs);
1170 s->s_flags &= ~MS_RDONLY;
1171 set_sb_umount_state( rs, REISERFS_ERROR_FS );
1172 /* mark_buffer_dirty (SB_BUFFER_WITH_SB (s), 1); */
1173 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
1174 REISERFS_SB(s)->s_mount_state = REISERFS_VALID_FS ;
1176 /* this will force a full flush of all journal lists */
1177 SB_JOURNAL(s)->j_must_wait = 1 ;
1178 err = journal_end(&th, s, 10) ;
1183 if (!( *mount_flags & MS_RDONLY ) ) {
1184 finish_unfinished( s );
1185 reiserfs_xattr_init (s, *mount_flags);
1191 /* load_bitmap_info_data - Sets up the reiserfs_bitmap_info structure from disk.
1192 * @sb - superblock for this filesystem
1193 * @bi - the bitmap info to be loaded. Requires that bi->bh is valid.
1195 * This routine counts how many free bits there are, finding the first zero
1196 * as a side effect. Could also be implemented as a loop of test_bit() calls, or
1197 * a loop of find_first_zero_bit() calls. This implementation is similar to
1198 * find_first_zero_bit(), but doesn't return after it finds the first bit.
1199 * Should only be called on fs mount, but should be fairly efficient anyways.
1201 * bi->first_zero_hint is considered unset if it == 0, since the bitmap itself
1202 * will * invariably occupt block 0 represented in the bitmap. The only
1203 * exception to this is when free_count also == 0, since there will be no
1204 * free blocks at all.
1207 static void load_bitmap_info_data (struct super_block *sb,
1208 struct reiserfs_bitmap_info *bi)
1210 unsigned long *cur = (unsigned long *)bi->bh->b_data;
1212 while ((char *)cur < (bi->bh->b_data + sb->s_blocksize)) {
1214 /* No need to scan if all 0's or all 1's.
1215 * Since we're only counting 0's, we can simply ignore all 1's */
1217 if (bi->first_zero_hint == 0) {
1218 bi->first_zero_hint = ((char *)cur - bi->bh->b_data) << 3;
1220 bi->free_count += sizeof(unsigned long)*8;
1221 } else if (*cur != ~0L) {
1223 for (b = 0; b < sizeof(unsigned long)*8; b++) {
1224 if (!reiserfs_test_le_bit (b, cur)) {
1226 if (bi->first_zero_hint == 0)
1227 bi->first_zero_hint =
1228 (((char *)cur - bi->bh->b_data) << 3) + b;
1235 #ifdef CONFIG_REISERFS_CHECK
1236 // This outputs a lot of unneded info on big FSes
1237 // reiserfs_warning ("bitmap loaded from block %d: %d free blocks",
1238 // bi->bh->b_blocknr, bi->free_count);
1242 static int read_bitmaps (struct super_block * s)
1246 SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
1247 if (SB_AP_BITMAP (s) == 0)
1249 memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_bitmap_info) * SB_BMAP_NR(s));
1250 for (i = 0, bmap_nr = REISERFS_DISK_OFFSET_IN_BYTES / s->s_blocksize + 1;
1251 i < SB_BMAP_NR(s); i++, bmap_nr = s->s_blocksize * 8 * i) {
1252 SB_AP_BITMAP (s)[i].bh = sb_getblk(s, bmap_nr);
1253 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh))
1254 ll_rw_block(READ, 1, &SB_AP_BITMAP(s)[i].bh);
1256 for (i = 0; i < SB_BMAP_NR(s); i++) {
1257 wait_on_buffer(SB_AP_BITMAP (s)[i].bh);
1258 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
1259 reiserfs_warning(s,"sh-2029: reiserfs read_bitmaps: "
1260 "bitmap block (#%lu) reading failed",
1261 SB_AP_BITMAP(s)[i].bh->b_blocknr);
1262 for (i = 0; i < SB_BMAP_NR(s); i++)
1263 brelse(SB_AP_BITMAP(s)[i].bh);
1264 vfree(SB_AP_BITMAP(s));
1265 SB_AP_BITMAP(s) = NULL;
1268 load_bitmap_info_data (s, SB_AP_BITMAP (s) + i);
1273 static int read_old_bitmaps (struct super_block * s)
1276 struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK(s);
1277 int bmp1 = (REISERFS_OLD_DISK_OFFSET_IN_BYTES / s->s_blocksize) + 1; /* first of bitmap blocks */
1279 /* read true bitmap */
1280 SB_AP_BITMAP (s) = vmalloc (sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1281 if (SB_AP_BITMAP (s) == 0)
1284 memset (SB_AP_BITMAP (s), 0, sizeof (struct reiserfs_buffer_info *) * sb_bmap_nr(rs));
1286 for (i = 0; i < sb_bmap_nr(rs); i ++) {
1287 SB_AP_BITMAP (s)[i].bh = sb_bread (s, bmp1 + i);
1288 if (!SB_AP_BITMAP (s)[i].bh)
1290 load_bitmap_info_data (s, SB_AP_BITMAP (s) + i);
1296 static int read_super_block (struct super_block * s, int offset)
1298 struct buffer_head * bh;
1299 struct reiserfs_super_block * rs;
1303 bh = sb_bread (s, offset / s->s_blocksize);
1305 reiserfs_warning (s, "sh-2006: read_super_block: "
1306 "bread failed (dev %s, block %lu, size %lu)",
1307 reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
1311 rs = (struct reiserfs_super_block *)bh->b_data;
1312 if (!is_any_reiserfs_magic_string (rs)) {
1318 // ok, reiserfs signature (old or new) found in at the given offset
1320 fs_blocksize = sb_blocksize(rs);
1322 sb_set_blocksize (s, fs_blocksize);
1324 bh = sb_bread (s, offset / s->s_blocksize);
1326 reiserfs_warning (s, "sh-2007: read_super_block: "
1327 "bread failed (dev %s, block %lu, size %lu)\n",
1328 reiserfs_bdevname (s), offset / s->s_blocksize, s->s_blocksize);
1332 rs = (struct reiserfs_super_block *)bh->b_data;
1333 if (sb_blocksize(rs) != s->s_blocksize) {
1334 reiserfs_warning (s, "sh-2011: read_super_block: "
1335 "can't find a reiserfs filesystem on (dev %s, block %Lu, size %lu)\n",
1336 reiserfs_bdevname (s), (unsigned long long)bh->b_blocknr, s->s_blocksize);
1341 if ( rs->s_v1.s_root_block == cpu_to_le32(-1) ) {
1343 reiserfs_warning (s, "Unfinished reiserfsck --rebuild-tree run detected. Please run\n"
1344 "reiserfsck --rebuild-tree and wait for a completion. If that fails\n"
1345 "get newer reiserfsprogs package");
1349 SB_BUFFER_WITH_SB (s) = bh;
1350 SB_DISK_SUPER_BLOCK (s) = rs;
1352 if (is_reiserfs_jr (rs)) {
1353 /* magic is of non-standard journal filesystem, look at s_version to
1354 find which format is in use */
1355 if (sb_version(rs) == REISERFS_VERSION_2)
1356 reiserfs_warning (s, "read_super_block: found reiserfs format \"3.6\""
1357 " with non-standard journal");
1358 else if (sb_version(rs) == REISERFS_VERSION_1)
1359 reiserfs_warning (s, "read_super_block: found reiserfs format \"3.5\""
1360 " with non-standard journal");
1362 reiserfs_warning (s, "sh-2012: read_super_block: found unknown "
1363 "format \"%u\" of reiserfs with non-standard magic",
1369 /* s_version of standard format may contain incorrect information,
1370 so we just look at the magic string */
1371 reiserfs_info (s, "found reiserfs format \"%s\" with standard journal\n",
1372 is_reiserfs_3_5 (rs) ? "3.5" : "3.6");
1374 s->s_op = &reiserfs_sops;
1375 s->s_export_op = &reiserfs_export_ops;
1377 s->s_qcop = &reiserfs_qctl_operations;
1378 s->dq_op = &reiserfs_quota_operations;
1381 /* new format is limited by the 32 bit wide i_blocks field, want to
1382 ** be one full block below that.
1384 s->s_maxbytes = (512LL << 32) - s->s_blocksize ;
1390 /* after journal replay, reread all bitmap and super blocks */
1391 static int reread_meta_blocks(struct super_block *s) {
1393 ll_rw_block(READ, 1, &(SB_BUFFER_WITH_SB(s))) ;
1394 wait_on_buffer(SB_BUFFER_WITH_SB(s)) ;
1395 if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
1396 reiserfs_warning (s, "reread_meta_blocks, error reading the super") ;
1400 for (i = 0; i < SB_BMAP_NR(s) ; i++) {
1401 ll_rw_block(READ, 1, &(SB_AP_BITMAP(s)[i].bh)) ;
1402 wait_on_buffer(SB_AP_BITMAP(s)[i].bh) ;
1403 if (!buffer_uptodate(SB_AP_BITMAP(s)[i].bh)) {
1404 reiserfs_warning (s, "reread_meta_blocks, error reading bitmap block number %d at %llu",
1405 i, (unsigned long long)SB_AP_BITMAP(s)[i].bh->b_blocknr) ;
1414 /////////////////////////////////////////////////////
1415 // hash detection stuff
1418 // if root directory is empty - we set default - Yura's - hash and
1420 // FIXME: we look for only one name in a directory. If tea and yura
1421 // bith have the same value - we ask user to send report to the
1423 static __u32 find_hash_out (struct super_block * s)
1426 struct inode * inode;
1428 INITIALIZE_PATH (path);
1429 struct reiserfs_dir_entry de;
1430 __u32 hash = DEFAULT_HASH;
1432 inode = s->s_root->d_inode;
1434 do { // Some serious "goto"-hater was there ;)
1435 u32 teahash, r5hash, yurahash;
1437 make_cpu_key (&key, inode, ~0, TYPE_DIRENTRY, 3);
1438 retval = search_by_entry_key (s, &key, &path, &de);
1439 if (retval == IO_ERROR) {
1443 if (retval == NAME_NOT_FOUND)
1445 set_de_name_and_namelen (&de);
1446 if (deh_offset( &(de.de_deh[de.de_entry_num]) ) == DOT_DOT_OFFSET) {
1447 /* allow override in this case */
1448 if (reiserfs_rupasov_hash(s)) {
1451 reiserfs_warning(s,"FS seems to be empty, autodetect "
1452 "is using the default hash");
1455 r5hash=GET_HASH_VALUE (r5_hash (de.de_name, de.de_namelen));
1456 teahash=GET_HASH_VALUE (keyed_hash (de.de_name, de.de_namelen));
1457 yurahash=GET_HASH_VALUE (yura_hash (de.de_name, de.de_namelen));
1458 if ( ( (teahash == r5hash) && (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num]))) == r5hash) ) ||
1459 ( (teahash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ||
1460 ( (r5hash == yurahash) && (yurahash == GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])))) ) ) {
1461 reiserfs_warning(s,"Unable to automatically detect hash function. "
1462 "Please mount with -o hash={tea,rupasov,r5}",
1463 reiserfs_bdevname (s));
1467 if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == yurahash)
1469 else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == teahash)
1471 else if (GET_HASH_VALUE( deh_offset(&(de.de_deh[de.de_entry_num])) ) == r5hash)
1474 reiserfs_warning (s,"Unrecognised hash function");
1483 // finds out which hash names are sorted with
1484 static int what_hash (struct super_block * s)
1488 code = sb_hash_function_code(SB_DISK_SUPER_BLOCK(s));
1490 /* reiserfs_hash_detect() == true if any of the hash mount options
1491 ** were used. We must check them to make sure the user isn't
1492 ** using a bad hash value
1494 if (code == UNSET_HASH || reiserfs_hash_detect(s))
1495 code = find_hash_out (s);
1497 if (code != UNSET_HASH && reiserfs_hash_detect(s)) {
1498 /* detection has found the hash, and we must check against the
1501 if (reiserfs_rupasov_hash(s) && code != YURA_HASH) {
1502 reiserfs_warning (s, "Error, %s hash detected, "
1503 "unable to force rupasov hash", reiserfs_hashname(code)) ;
1505 } else if (reiserfs_tea_hash(s) && code != TEA_HASH) {
1506 reiserfs_warning (s, "Error, %s hash detected, "
1507 "unable to force tea hash", reiserfs_hashname(code)) ;
1509 } else if (reiserfs_r5_hash(s) && code != R5_HASH) {
1510 reiserfs_warning (s, "Error, %s hash detected, "
1511 "unable to force r5 hash", reiserfs_hashname(code)) ;
1515 /* find_hash_out was not called or could not determine the hash */
1516 if (reiserfs_rupasov_hash(s)) {
1518 } else if (reiserfs_tea_hash(s)) {
1520 } else if (reiserfs_r5_hash(s)) {
1525 /* if we are mounted RW, and we have a new valid hash code, update
1528 if (code != UNSET_HASH &&
1529 !(s->s_flags & MS_RDONLY) &&
1530 code != sb_hash_function_code(SB_DISK_SUPER_BLOCK(s))) {
1531 set_sb_hash_function_code(SB_DISK_SUPER_BLOCK(s), code);
1536 // return pointer to appropriate function
1537 static hashf_t hash_function (struct super_block * s)
1539 switch (what_hash (s)) {
1541 reiserfs_info (s, "Using tea hash to sort names\n");
1544 reiserfs_info (s, "Using rupasov hash to sort names\n");
1547 reiserfs_info (s, "Using r5 hash to sort names\n");
1553 // this is used to set up correct value for old partitions
1554 static int function2code (hashf_t func)
1556 if (func == keyed_hash)
1558 if (func == yura_hash)
1560 if (func == r5_hash)
1563 BUG() ; // should never happen
1568 #define SWARN(silent, s, ...) \
1570 reiserfs_warning (s, __VA_ARGS__)
1572 static int reiserfs_fill_super (struct super_block * s, void * data, int silent)
1574 struct inode *root_inode;
1576 struct reiserfs_transaction_handle th ;
1578 unsigned long blocks;
1579 unsigned int commit_max_age = 0;
1580 int jinit_done = 0 ;
1581 struct reiserfs_iget_args args ;
1582 struct reiserfs_super_block * rs;
1584 struct reiserfs_sb_info *sbi;
1585 int errval = -EINVAL;
1587 sbi = kmalloc(sizeof(struct reiserfs_sb_info), GFP_KERNEL);
1593 memset (sbi, 0, sizeof (struct reiserfs_sb_info));
1594 /* Set default values for options: non-aggressive tails, RO on errors */
1595 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_SMALLTAIL);
1596 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_ERROR_RO);
1597 /* no preallocation minimum, be smart in
1598 reiserfs_file_write instead */
1599 REISERFS_SB(s)->s_alloc_options.preallocmin = 0;
1600 /* Preallocate by 16 blocks (17-1) at once */
1601 REISERFS_SB(s)->s_alloc_options.preallocsize = 17;
1602 /* Initialize the rwsem for xattr dir */
1603 init_rwsem(&REISERFS_SB(s)->xattr_dir_sem);
1605 /* setup default block allocator options */
1606 reiserfs_init_alloc_options(s);
1609 if (reiserfs_parse_options (s, (char *) data, &(sbi->s_mount_opt), &blocks, &jdev_name, &commit_max_age) == 0) {
1614 SWARN (silent, s, "jmacd-7: reiserfs_fill_super: resize option "
1615 "for remount only");
1619 /* try old format (undistributed bitmap, super block in 8-th 1k block of a device) */
1620 if (!read_super_block (s, REISERFS_OLD_DISK_OFFSET_IN_BYTES))
1622 /* try new format (64-th 1k block), which can contain reiserfs super block */
1623 else if (read_super_block (s, REISERFS_DISK_OFFSET_IN_BYTES)) {
1624 SWARN(silent, s, "sh-2021: reiserfs_fill_super: can not find reiserfs on %s", reiserfs_bdevname (s));
1628 rs = SB_DISK_SUPER_BLOCK (s);
1629 /* Let's do basic sanity check to verify that underlying device is not
1630 smaller than the filesystem. If the check fails then abort and scream,
1631 because bad stuff will happen otherwise. */
1632 if ( s->s_bdev && s->s_bdev->bd_inode && i_size_read(s->s_bdev->bd_inode) < sb_block_count(rs)*sb_blocksize(rs)) {
1633 SWARN (silent, s, "Filesystem on %s cannot be mounted because it is bigger than the device", reiserfs_bdevname(s));
1634 SWARN(silent, s, "You may need to run fsck or increase size of your LVM partition");
1635 SWARN(silent, s, "Or may be you forgot to reboot after fdisk when it told you to");
1639 sbi->s_mount_state = SB_REISERFS_STATE(s);
1640 sbi->s_mount_state = REISERFS_VALID_FS ;
1642 if (old_format ? read_old_bitmaps(s) : read_bitmaps(s)) {
1643 SWARN(silent, s, "jmacd-8: reiserfs_fill_super: unable to read bitmap");
1646 #ifdef CONFIG_REISERFS_CHECK
1647 SWARN (silent, s, "CONFIG_REISERFS_CHECK is set ON");
1648 SWARN (silent, s, "- it is slow mode for debugging.");
1651 /* make data=ordered the default */
1652 if (!reiserfs_data_log(s) && !reiserfs_data_ordered(s) &&
1653 !reiserfs_data_writeback(s))
1655 REISERFS_SB(s)->s_mount_opt |= (1 << REISERFS_DATA_ORDERED);
1658 if (reiserfs_data_log(s)) {
1659 reiserfs_info (s, "using journaled data mode\n");
1660 } else if (reiserfs_data_ordered(s)) {
1661 reiserfs_info (s, "using ordered data mode\n");
1663 reiserfs_info (s, "using writeback data mode\n");
1665 if (reiserfs_barrier_flush(s)) {
1666 printk("reiserfs: using flush barriers\n");
1669 // set_device_ro(s->s_dev, 1) ;
1670 if( journal_init(s, jdev_name, old_format, commit_max_age) ) {
1671 SWARN(silent, s, "sh-2022: reiserfs_fill_super: unable to initialize journal space") ;
1674 jinit_done = 1 ; /* once this is set, journal_release must be called
1675 ** if we error out of the mount
1678 if (reread_meta_blocks(s)) {
1679 SWARN(silent, s, "jmacd-9: reiserfs_fill_super: unable to reread meta blocks after journal init") ;
1683 if (replay_only (s))
1686 if (bdev_read_only(s->s_bdev) && !(s->s_flags & MS_RDONLY)) {
1687 SWARN(silent, s, "clm-7000: Detected readonly device, marking FS readonly") ;
1688 s->s_flags |= MS_RDONLY ;
1690 args.objectid = REISERFS_ROOT_OBJECTID ;
1691 args.dirid = REISERFS_ROOT_PARENT_OBJECTID ;
1692 root_inode = iget5_locked (s, REISERFS_ROOT_OBJECTID, reiserfs_find_actor, reiserfs_init_locked_inode, (void *)(&args));
1694 SWARN(silent, s, "jmacd-10: reiserfs_fill_super: get root inode failed");
1698 if (root_inode->i_state & I_NEW) {
1699 reiserfs_read_locked_inode(root_inode, &args);
1700 unlock_new_inode(root_inode);
1703 s->s_root = d_alloc_root(root_inode);
1709 // define and initialize hash function
1710 sbi->s_hash_function = hash_function (s);
1711 if (sbi->s_hash_function == NULL) {
1717 if (is_reiserfs_3_5 (rs) || (is_reiserfs_jr (rs) && SB_VERSION (s) == REISERFS_VERSION_1))
1718 set_bit(REISERFS_3_5, &(sbi->s_properties));
1720 set_bit(REISERFS_3_6, &(sbi->s_properties));
1722 if (!(s->s_flags & MS_RDONLY)) {
1724 errval = journal_begin(&th, s, 1) ;
1730 reiserfs_prepare_for_journal(s, SB_BUFFER_WITH_SB(s), 1) ;
1732 set_sb_umount_state( rs, REISERFS_ERROR_FS );
1733 set_sb_fs_state (rs, 0);
1735 if (old_format_only(s)) {
1736 /* filesystem of format 3.5 either with standard or non-standard
1738 if (convert_reiserfs (s)) {
1739 /* and -o conv is given */
1741 reiserfs_info (s,"converting 3.5 filesystem to the 3.6 format") ;
1743 if (is_reiserfs_3_5 (rs))
1744 /* put magic string of 3.6 format. 2.2 will not be able to
1745 mount this filesystem anymore */
1746 memcpy (rs->s_v1.s_magic, reiserfs_3_6_magic_string,
1747 sizeof (reiserfs_3_6_magic_string));
1749 set_sb_version(rs,REISERFS_VERSION_2);
1750 reiserfs_convert_objectid_map_v1(s) ;
1751 set_bit(REISERFS_3_6, &(sbi->s_properties));
1752 clear_bit(REISERFS_3_5, &(sbi->s_properties));
1753 } else if (!silent){
1754 reiserfs_info (s, "using 3.5.x disk format\n") ;
1758 journal_mark_dirty(&th, s, SB_BUFFER_WITH_SB (s));
1759 errval = journal_end(&th, s, 1) ;
1766 if ((errval = reiserfs_xattr_init (s, s->s_flags))) {
1772 /* look for files which were to be removed in previous session */
1773 finish_unfinished (s);
1775 if ( old_format_only(s) && !silent) {
1776 reiserfs_info (s, "using 3.5.x disk format\n") ;
1779 if ((errval = reiserfs_xattr_init (s, s->s_flags))) {
1785 // mark hash in super block: it could be unset. overwrite should be ok
1786 set_sb_hash_function_code( rs, function2code(sbi->s_hash_function ) );
1790 reiserfs_proc_info_init( s );
1792 init_waitqueue_head (&(sbi->s_wait));
1793 spin_lock_init(&sbi->bitmap_lock);
1798 if (jinit_done) { /* kill the commit thread, free journal ram */
1799 journal_release_error(NULL, s) ;
1801 if (SB_DISK_SUPER_BLOCK (s)) {
1802 for (j = 0; j < SB_BMAP_NR (s); j ++) {
1803 if (SB_AP_BITMAP (s))
1804 brelse (SB_AP_BITMAP (s)[j].bh);
1806 if (SB_AP_BITMAP (s))
1807 vfree (SB_AP_BITMAP (s));
1809 if (SB_BUFFER_WITH_SB (s))
1810 brelse(SB_BUFFER_WITH_SB (s));
1812 for (j = 0; j < MAXQUOTAS; j++) {
1813 if (sbi->s_qf_names[j])
1814 kfree(sbi->s_qf_names[j]);
1821 s->s_fs_info = NULL;
1826 static int reiserfs_statfs (struct super_block * s, struct kstatfs * buf)
1828 struct reiserfs_super_block * rs = SB_DISK_SUPER_BLOCK (s);
1830 buf->f_namelen = (REISERFS_MAX_NAME (s->s_blocksize));
1831 buf->f_bfree = sb_free_blocks(rs);
1832 buf->f_bavail = buf->f_bfree;
1833 buf->f_blocks = sb_block_count(rs) - sb_bmap_nr(rs) - 1;
1834 buf->f_bsize = s->s_blocksize;
1835 /* changed to accommodate gcc folks.*/
1836 buf->f_type = REISERFS_SUPER_MAGIC;
1841 static int reiserfs_dquot_initialize(struct inode *inode, int type)
1843 struct reiserfs_transaction_handle th;
1846 /* We may create quota structure so we need to reserve enough blocks */
1847 reiserfs_write_lock(inode->i_sb);
1848 journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
1849 ret = dquot_initialize(inode, type);
1850 journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
1851 reiserfs_write_unlock(inode->i_sb);
1855 static int reiserfs_dquot_drop(struct inode *inode)
1857 struct reiserfs_transaction_handle th;
1860 /* We may delete quota structure so we need to reserve enough blocks */
1861 reiserfs_write_lock(inode->i_sb);
1862 journal_begin(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
1863 ret = dquot_drop(inode);
1864 journal_end(&th, inode->i_sb, 2*REISERFS_QUOTA_INIT_BLOCKS);
1865 reiserfs_write_unlock(inode->i_sb);
1869 static int reiserfs_write_dquot(struct dquot *dquot)
1871 struct reiserfs_transaction_handle th;
1874 reiserfs_write_lock(dquot->dq_sb);
1875 journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS);
1876 ret = dquot_commit(dquot);
1877 journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_TRANS_BLOCKS);
1878 reiserfs_write_unlock(dquot->dq_sb);
1882 static int reiserfs_acquire_dquot(struct dquot *dquot)
1884 struct reiserfs_transaction_handle th;
1887 reiserfs_write_lock(dquot->dq_sb);
1888 journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
1889 ret = dquot_acquire(dquot);
1890 journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
1891 reiserfs_write_unlock(dquot->dq_sb);
1895 static int reiserfs_release_dquot(struct dquot *dquot)
1897 struct reiserfs_transaction_handle th;
1900 reiserfs_write_lock(dquot->dq_sb);
1901 journal_begin(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
1902 ret = dquot_release(dquot);
1903 journal_end(&th, dquot->dq_sb, REISERFS_QUOTA_INIT_BLOCKS);
1904 reiserfs_write_unlock(dquot->dq_sb);
1908 static int reiserfs_mark_dquot_dirty(struct dquot *dquot)
1910 /* Are we journalling quotas? */
1911 if (REISERFS_SB(dquot->dq_sb)->s_qf_names[USRQUOTA] ||
1912 REISERFS_SB(dquot->dq_sb)->s_qf_names[GRPQUOTA]) {
1913 dquot_mark_dquot_dirty(dquot);
1914 return reiserfs_write_dquot(dquot);
1917 return dquot_mark_dquot_dirty(dquot);
1920 static int reiserfs_write_info(struct super_block *sb, int type)
1922 struct reiserfs_transaction_handle th;
1925 /* Data block + inode block */
1926 reiserfs_write_lock(sb);
1927 journal_begin(&th, sb, 2);
1928 ret = dquot_commit_info(sb, type);
1929 journal_end(&th, sb, 2);
1930 reiserfs_write_unlock(sb);
1935 * Turn on quotas during mount time - we need to find
1936 * the quota file and such...
1938 static int reiserfs_quota_on_mount(struct super_block *sb, int type)
1941 struct dentry *dentry;
1942 struct qstr name = { .name = REISERFS_SB(sb)->s_qf_names[type],
1944 .len = strlen(REISERFS_SB(sb)->s_qf_names[type])};
1946 dentry = lookup_hash(&name, sb->s_root);
1948 return PTR_ERR(dentry);
1949 err = vfs_quota_on_mount(type, REISERFS_SB(sb)->s_jquota_fmt, dentry);
1950 /* Now invalidate and put the dentry - quota got its own reference
1951 * to inode and dentry has at least wrong hash so we had better
1953 d_invalidate(dentry);
1959 * Standard function to be called on quota_on
1961 static int reiserfs_quota_on(struct super_block *sb, int type, int format_id, char *path)
1964 struct nameidata nd;
1966 err = path_lookup(path, LOOKUP_FOLLOW, &nd);
1969 /* Quotafile not on the same filesystem? */
1970 if (nd.mnt->mnt_sb != sb) {
1974 /* We must not pack tails for quota files on reiserfs for quota IO to work */
1975 if (!REISERFS_I(nd.dentry->d_inode)->i_flags & i_nopack_mask) {
1976 reiserfs_warning(sb, "reiserfs: Quota file must have tail packing disabled.");
1980 /* Not journalling quota? No more tests needed... */
1981 if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] &&
1982 !REISERFS_SB(sb)->s_qf_names[GRPQUOTA]) {
1984 return vfs_quota_on(sb, type, format_id, path);
1986 /* Quotafile not of fs root? */
1987 if (nd.dentry->d_parent->d_inode != sb->s_root->d_inode)
1988 reiserfs_warning(sb, "reiserfs: Quota file not on filesystem root. "
1989 "Journalled quota will not work.");
1991 return vfs_quota_on(sb, type, format_id, path);
1994 /* Read data from quotafile - avoid pagecache and such because we cannot afford
1995 * acquiring the locks... As quota files are never truncated and quota code
1996 * itself serializes the operations (and noone else should touch the files)
1997 * we don't have to be afraid of races */
1998 static ssize_t reiserfs_quota_read(struct super_block *sb, int type, char *data,
1999 size_t len, loff_t off)
2001 struct inode *inode = sb_dqopt(sb)->files[type];
2002 unsigned long blk = off >> sb->s_blocksize_bits;
2003 int err = 0, offset = off & (sb->s_blocksize - 1), tocopy;
2005 struct buffer_head tmp_bh, *bh;
2006 loff_t i_size = i_size_read(inode);
2010 if (off+len > i_size)
2013 while (toread > 0) {
2014 tocopy = sb->s_blocksize - offset < toread ? sb->s_blocksize - offset : toread;
2016 /* Quota files are without tails so we can safely use this function */
2017 reiserfs_write_lock(sb);
2018 err = reiserfs_get_block(inode, blk, &tmp_bh, 0);
2019 reiserfs_write_unlock(sb);
2022 if (!buffer_mapped(&tmp_bh)) /* A hole? */
2023 memset(data, 0, tocopy);
2025 bh = sb_bread(sb, tmp_bh.b_blocknr);
2028 memcpy(data, bh->b_data+offset, tocopy);
2039 /* Write to quotafile (we know the transaction is already started and has
2040 * enough credits) */
2041 static ssize_t reiserfs_quota_write(struct super_block *sb, int type,
2042 const char *data, size_t len, loff_t off)
2044 struct inode *inode = sb_dqopt(sb)->files[type];
2045 unsigned long blk = off >> sb->s_blocksize_bits;
2046 int err = 0, offset = off & (sb->s_blocksize - 1), tocopy;
2047 int journal_quota = REISERFS_SB(sb)->s_qf_names[type] != NULL;
2048 size_t towrite = len;
2049 struct buffer_head tmp_bh, *bh;
2051 down(&inode->i_sem);
2052 while (towrite > 0) {
2053 tocopy = sb->s_blocksize - offset < towrite ?
2054 sb->s_blocksize - offset : towrite;
2056 err = reiserfs_get_block(inode, blk, &tmp_bh, GET_BLOCK_CREATE);
2059 if (offset || tocopy != sb->s_blocksize)
2060 bh = sb_bread(sb, tmp_bh.b_blocknr);
2062 bh = sb_getblk(sb, tmp_bh.b_blocknr);
2068 memcpy(bh->b_data+offset, data, tocopy);
2069 flush_dcache_page(bh->b_page);
2070 set_buffer_uptodate(bh);
2072 reiserfs_prepare_for_journal(sb, bh, 1);
2073 journal_mark_dirty(current->journal_info, sb, bh);
2075 reiserfs_add_ordered_list(inode, bh);
2085 if (inode->i_size < off+len-towrite)
2086 i_size_write(inode, off+len-towrite);
2088 inode->i_mtime = inode->i_ctime = CURRENT_TIME;
2089 mark_inode_dirty(inode);
2091 return len - towrite;
2096 static struct super_block*
2097 get_super_block (struct file_system_type *fs_type, int flags,
2098 const char *dev_name, void *data)
2100 return get_sb_bdev(fs_type, flags, dev_name, data, reiserfs_fill_super);
2104 init_reiserfs_fs ( void )
2108 if ((ret = init_inodecache ())) {
2112 if ((ret = reiserfs_xattr_register_handlers ()))
2113 goto failed_reiserfs_xattr_register_handlers;
2115 reiserfs_proc_info_global_init ();
2116 reiserfs_proc_register_global ("version", reiserfs_global_version_in_proc);
2118 ret = register_filesystem (& reiserfs_fs_type);
2124 reiserfs_xattr_unregister_handlers ();
2126 failed_reiserfs_xattr_register_handlers:
2127 reiserfs_proc_unregister_global ("version");
2128 reiserfs_proc_info_global_done ();
2129 destroy_inodecache ();
2135 exit_reiserfs_fs ( void )
2137 reiserfs_xattr_unregister_handlers ();
2138 reiserfs_proc_unregister_global ("version");
2139 reiserfs_proc_info_global_done ();
2140 unregister_filesystem (& reiserfs_fs_type);
2141 destroy_inodecache ();
2144 struct file_system_type reiserfs_fs_type = {
2145 .owner = THIS_MODULE,
2147 .get_sb = get_super_block,
2148 .kill_sb = kill_block_super,
2149 .fs_flags = FS_REQUIRES_DEV,
2152 MODULE_DESCRIPTION ("ReiserFS journaled filesystem");
2153 MODULE_AUTHOR ("Hans Reiser <reiser@namesys.com>");
2154 MODULE_LICENSE ("GPL");
2156 module_init (init_reiserfs_fs);
2157 module_exit (exit_reiserfs_fs);