err.no Git - linux-2.6/blob - fs/gfs2/ops_fstype.c

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
   4  *
   5  * This copyrighted material is made available to anyone wishing to use,
   6  * modify, copy, or redistribute it subject to the terms and conditions
   7  * of the GNU General Public License v.2.
   8  */
   9
  10 #include <linux/sched.h>
  11 #include <linux/slab.h>
  12 #include <linux/spinlock.h>
  13 #include <linux/completion.h>
  14 #include <linux/buffer_head.h>
  15 #include <linux/vmalloc.h>
  16 #include <linux/blkdev.h>
  17 #include <linux/kthread.h>
  18 #include <linux/gfs2_ondisk.h>
  19
  20 #include "gfs2.h"
  21 #include "lm_interface.h"
  22 #include "incore.h"
  23 #include "daemon.h"
  24 #include "glock.h"
  25 #include "glops.h"
  26 #include "inode.h"
  27 #include "lm.h"
  28 #include "mount.h"
  29 #include "ops_export.h"
  30 #include "ops_fstype.h"
  31 #include "ops_super.h"
  32 #include "recovery.h"
  33 #include "rgrp.h"
  34 #include "super.h"
  35 #include "sys.h"
  36 #include "util.h"
  37
  38 #define DO 0
  39 #define UNDO 1
  40
  41 extern struct dentry_operations gfs2_dops;
  42
  43 static struct gfs2_sbd *init_sbd(struct super_block *sb)
  44 {
  45         struct gfs2_sbd *sdp;
  46         unsigned int x;
  47
  48         sdp = vmalloc(sizeof(struct gfs2_sbd));
  49         if (!sdp)
  50                 return NULL;
  51
  52         memset(sdp, 0, sizeof(struct gfs2_sbd));
  53
  54         sb->s_fs_info = sdp;
  55         sdp->sd_vfs = sb;
  56
  57         gfs2_tune_init(&sdp->sd_tune);
  58
  59         for (x = 0; x < GFS2_GL_HASH_SIZE; x++) {
  60                 rwlock_init(&sdp->sd_gl_hash[x].hb_lock);
  61                 INIT_LIST_HEAD(&sdp->sd_gl_hash[x].hb_list);
  62         }
  63         INIT_LIST_HEAD(&sdp->sd_reclaim_list);
  64         spin_lock_init(&sdp->sd_reclaim_lock);
  65         init_waitqueue_head(&sdp->sd_reclaim_wq);
  66         mutex_init(&sdp->sd_invalidate_inodes_mutex);
  67
  68         mutex_init(&sdp->sd_inum_mutex);
  69         spin_lock_init(&sdp->sd_statfs_spin);
  70         mutex_init(&sdp->sd_statfs_mutex);
  71
  72         spin_lock_init(&sdp->sd_rindex_spin);
  73         mutex_init(&sdp->sd_rindex_mutex);
  74         INIT_LIST_HEAD(&sdp->sd_rindex_list);
  75         INIT_LIST_HEAD(&sdp->sd_rindex_mru_list);
  76         INIT_LIST_HEAD(&sdp->sd_rindex_recent_list);
  77
  78         INIT_LIST_HEAD(&sdp->sd_jindex_list);
  79         spin_lock_init(&sdp->sd_jindex_spin);
  80         mutex_init(&sdp->sd_jindex_mutex);
  81
  82         INIT_LIST_HEAD(&sdp->sd_quota_list);
  83         spin_lock_init(&sdp->sd_quota_spin);
  84         mutex_init(&sdp->sd_quota_mutex);
  85
  86         spin_lock_init(&sdp->sd_log_lock);
  87
  88         INIT_LIST_HEAD(&sdp->sd_log_le_gl);
  89         INIT_LIST_HEAD(&sdp->sd_log_le_buf);
  90         INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
  91         INIT_LIST_HEAD(&sdp->sd_log_le_rg);
  92         INIT_LIST_HEAD(&sdp->sd_log_le_databuf);
  93
  94         mutex_init(&sdp->sd_log_reserve_mutex);
  95         INIT_LIST_HEAD(&sdp->sd_ail1_list);
  96         INIT_LIST_HEAD(&sdp->sd_ail2_list);
  97
  98         init_rwsem(&sdp->sd_log_flush_lock);
  99         INIT_LIST_HEAD(&sdp->sd_log_flush_list);
 100
 101         INIT_LIST_HEAD(&sdp->sd_revoke_list);
 102
 103         mutex_init(&sdp->sd_freeze_lock);
 104
 105         return sdp;
 106 }
 107
 108 static void init_vfs(struct super_block *sb, unsigned noatime)
 109 {
 110         struct gfs2_sbd *sdp = sb->s_fs_info;
 111
 112         sb->s_magic = GFS2_MAGIC;
 113         sb->s_op = &gfs2_super_ops;
 114         sb->s_export_op = &gfs2_export_ops;
 115         sb->s_maxbytes = MAX_LFS_FILESIZE;
 116
 117         if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME))
 118                 set_bit(noatime, &sdp->sd_flags);
 119
 120         /* Don't let the VFS update atimes.  GFS2 handles this itself. */
 121         sb->s_flags |= MS_NOATIME | MS_NODIRATIME;
 122 }
 123
 124 static int init_names(struct gfs2_sbd *sdp, int silent)
 125 {
 126         struct gfs2_sb *sb = NULL;
 127         char *proto, *table;
 128         int error = 0;
 129
 130         proto = sdp->sd_args.ar_lockproto;
 131         table = sdp->sd_args.ar_locktable;
 132
 133         /*  Try to autodetect  */
 134
 135         if (!proto[0] || !table[0]) {
 136                 struct buffer_head *bh;
 137                 bh = sb_getblk(sdp->sd_vfs,
 138                                GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift);
 139                 lock_buffer(bh);
 140                 clear_buffer_uptodate(bh);
 141                 clear_buffer_dirty(bh);
 142                 unlock_buffer(bh);
 143                 ll_rw_block(READ, 1, &bh);
 144                 wait_on_buffer(bh);
 145
 146                 if (!buffer_uptodate(bh)) {
 147                         brelse(bh);
 148                         return -EIO;
 149                 }
 150
 151                 sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL);
 152                 if (!sb) {
 153                         brelse(bh);
 154                         return -ENOMEM;
 155                 }
 156                 gfs2_sb_in(sb, bh->b_data);
 157                 brelse(bh);
 158
 159                 error = gfs2_check_sb(sdp, sb, silent);
 160                 if (error)
 161                         goto out;
 162
 163                 if (!proto[0])
 164                         proto = sb->sb_lockproto;
 165                 if (!table[0])
 166                         table = sb->sb_locktable;
 167         }
 168
 169         if (!table[0])
 170                 table = sdp->sd_vfs->s_id;
 171
 172         snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto);
 173         snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table);
 174
 175  out:
 176         kfree(sb);
 177
 178         return error;
 179 }
 180
 181 static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
 182                         int undo)
 183 {
 184         struct task_struct *p;
 185         int error = 0;
 186
 187         if (undo)
 188                 goto fail_trans;
 189
 190         p = kthread_run(gfs2_scand, sdp, "gfs2_scand");
 191         error = IS_ERR(p);
 192         if (error) {
 193                 fs_err(sdp, "can't start scand thread: %d\n", error);
 194                 return error;
 195         }
 196         sdp->sd_scand_process = p;
 197
 198         for (sdp->sd_glockd_num = 0;
 199              sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd;
 200              sdp->sd_glockd_num++) {
 201                 p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd");
 202                 error = IS_ERR(p);
 203                 if (error) {
 204                         fs_err(sdp, "can't start glockd thread: %d\n", error);
 205                         goto fail;
 206                 }
 207                 sdp->sd_glockd_process[sdp->sd_glockd_num] = p;
 208         }
 209
 210         error = gfs2_glock_nq_num(sdp,
 211                                   GFS2_MOUNT_LOCK, &gfs2_nondisk_glops,
 212                                   LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE,
 213                                   mount_gh);
 214         if (error) {
 215                 fs_err(sdp, "can't acquire mount glock: %d\n", error);
 216                 goto fail;
 217         }
 218
 219         error = gfs2_glock_nq_num(sdp,
 220                                   GFS2_LIVE_LOCK, &gfs2_nondisk_glops,
 221                                   LM_ST_SHARED,
 222                                   LM_FLAG_NOEXP | GL_EXACT,
 223                                   &sdp->sd_live_gh);
 224         if (error) {
 225                 fs_err(sdp, "can't acquire live glock: %d\n", error);
 226                 goto fail_mount;
 227         }
 228
 229         error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops,
 230                                CREATE, &sdp->sd_rename_gl);
 231         if (error) {
 232                 fs_err(sdp, "can't create rename glock: %d\n", error);
 233                 goto fail_live;
 234         }
 235
 236         error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops,
 237                                CREATE, &sdp->sd_trans_gl);
 238         if (error) {
 239                 fs_err(sdp, "can't create transaction glock: %d\n", error);
 240                 goto fail_rename;
 241         }
 242         set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags);
 243
 244         return 0;
 245
 246 fail_trans:
 247         gfs2_glock_put(sdp->sd_trans_gl);
 248
 249 fail_rename:
 250         gfs2_glock_put(sdp->sd_rename_gl);
 251
 252 fail_live:
 253         gfs2_glock_dq_uninit(&sdp->sd_live_gh);
 254
 255 fail_mount:
 256         gfs2_glock_dq_uninit(mount_gh);
 257
 258 fail:
 259         while (sdp->sd_glockd_num--)
 260                 kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
 261
 262         kthread_stop(sdp->sd_scand_process);
 263
 264         return error;
 265 }
 266
 267 static struct inode *gfs2_lookup_root(struct super_block *sb,
 268                                       struct gfs2_inum *inum)
 269 {
 270         return gfs2_inode_lookup(sb, inum, DT_DIR);
 271 }
 272
 273 static int init_sb(struct gfs2_sbd *sdp, int silent, int undo)
 274 {
 275         struct super_block *sb = sdp->sd_vfs;
 276         struct gfs2_holder sb_gh;
 277         struct gfs2_inum *inum;
 278         struct inode *inode;
 279         int error = 0;
 280
 281         if (undo) {
 282                 if (sb->s_root) {
 283                         dput(sb->s_root);
 284                         sb->s_root = NULL;
 285                 }
 286                 return 0;
 287         }
 288
 289         error = gfs2_glock_nq_num(sdp, GFS2_SB_LOCK, &gfs2_meta_glops,
 290                                  LM_ST_SHARED, 0, &sb_gh);
 291         if (error) {
 292                 fs_err(sdp, "can't acquire superblock glock: %d\n", error);
 293                 return error;
 294         }
 295
 296         error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent);
 297         if (error) {
 298                 fs_err(sdp, "can't read superblock: %d\n", error);
 299                 goto out;
 300         }
 301
 302         /* Set up the buffer cache and SB for real */
 303         if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) {
 304                 error = -EINVAL;
 305                 fs_err(sdp, "FS block size (%u) is too small for device "
 306                        "block size (%u)\n",
 307                        sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev));
 308                 goto out;
 309         }
 310         if (sdp->sd_sb.sb_bsize > PAGE_SIZE) {
 311                 error = -EINVAL;
 312                 fs_err(sdp, "FS block size (%u) is too big for machine "
 313                        "page size (%u)\n",
 314                        sdp->sd_sb.sb_bsize, (unsigned int)PAGE_SIZE);
 315                 goto out;
 316         }
 317         sb_set_blocksize(sb, sdp->sd_sb.sb_bsize);
 318
 319         /* Get the root inode */
 320         inum = &sdp->sd_sb.sb_root_dir;
 321         if (sb->s_type == &gfs2meta_fs_type)
 322                 inum = &sdp->sd_sb.sb_master_dir;
 323         inode = gfs2_lookup_root(sb, inum);
 324         if (IS_ERR(inode)) {
 325                 error = PTR_ERR(inode);
 326                 fs_err(sdp, "can't read in root inode: %d\n", error);
 327                 goto out;
 328         }
 329
 330         sb->s_root = d_alloc_root(inode);
 331         if (!sb->s_root) {
 332                 fs_err(sdp, "can't get root dentry\n");
 333                 error = -ENOMEM;
 334                 iput(inode);
 335         }
 336         sb->s_root->d_op = &gfs2_dops;
 337 out:
 338         gfs2_glock_dq_uninit(&sb_gh);
 339         return error;
 340 }
 341
 342 static int init_journal(struct gfs2_sbd *sdp, int undo)
 343 {
 344         struct gfs2_holder ji_gh;
 345         struct task_struct *p;
 346         struct gfs2_inode *ip;
 347         int jindex = 1;
 348         int error = 0;
 349
 350         if (undo) {
 351                 jindex = 0;
 352                 goto fail_recoverd;
 353         }
 354
 355         sdp->sd_jindex = gfs2_lookup_simple(sdp->sd_master_dir, "jindex");
 356         if (IS_ERR(sdp->sd_jindex)) {
 357                 fs_err(sdp, "can't lookup journal index: %d\n", error);
 358                 return PTR_ERR(sdp->sd_jindex);
 359         }
 360         ip = GFS2_I(sdp->sd_jindex);
 361         set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
 362
 363         /* Load in the journal index special file */
 364
 365         error = gfs2_jindex_hold(sdp, &ji_gh);
 366         if (error) {
 367                 fs_err(sdp, "can't read journal index: %d\n", error);
 368                 goto fail;
 369         }
 370
 371         error = -EINVAL;
 372         if (!gfs2_jindex_size(sdp)) {
 373                 fs_err(sdp, "no journals!\n");
 374                 goto fail_jindex;
 375         }
 376
 377         if (sdp->sd_args.ar_spectator) {
 378                 sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0);
 379                 sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks;
 380         } else {
 381                 if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) {
 382                         fs_err(sdp, "can't mount journal #%u\n",
 383                                sdp->sd_lockstruct.ls_jid);
 384                         fs_err(sdp, "there are only %u journals (0 - %u)\n",
 385                                gfs2_jindex_size(sdp),
 386                                gfs2_jindex_size(sdp) - 1);
 387                         goto fail_jindex;
 388                 }
 389                 sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid);
 390
 391                 error = gfs2_glock_nq_num(sdp, sdp->sd_lockstruct.ls_jid,
 392                                           &gfs2_journal_glops,
 393                                           LM_ST_EXCLUSIVE, LM_FLAG_NOEXP,
 394                                           &sdp->sd_journal_gh);
 395                 if (error) {
 396                         fs_err(sdp, "can't acquire journal glock: %d\n", error);
 397                         goto fail_jindex;
 398                 }
 399
 400                 ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 401                 error = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED,
 402                                            LM_FLAG_NOEXP | GL_EXACT,
 403                                            &sdp->sd_jinode_gh);
 404                 if (error) {
 405                         fs_err(sdp, "can't acquire journal inode glock: %d\n",
 406                                error);
 407                         goto fail_journal_gh;
 408                 }
 409
 410                 error = gfs2_jdesc_check(sdp->sd_jdesc);
 411                 if (error) {
 412                         fs_err(sdp, "my journal (%u) is bad: %d\n",
 413                                sdp->sd_jdesc->jd_jid, error);
 414                         goto fail_jinode_gh;
 415                 }
 416                 sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks;
 417         }
 418
 419         if (sdp->sd_lockstruct.ls_first) {
 420                 unsigned int x;
 421                 for (x = 0; x < sdp->sd_journals; x++) {
 422                         error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x));
 423                         if (error) {
 424                                 fs_err(sdp, "error recovering journal %u: %d\n",
 425                                        x, error);
 426                                 goto fail_jinode_gh;
 427                         }
 428                 }
 429
 430                 gfs2_lm_others_may_mount(sdp);
 431         } else if (!sdp->sd_args.ar_spectator) {
 432                 error = gfs2_recover_journal(sdp->sd_jdesc);
 433                 if (error) {
 434                         fs_err(sdp, "error recovering my journal: %d\n", error);
 435                         goto fail_jinode_gh;
 436                 }
 437         }
 438
 439         set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags);
 440         gfs2_glock_dq_uninit(&ji_gh);
 441         jindex = 0;
 442
 443         p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd");
 444         error = IS_ERR(p);
 445         if (error) {
 446                 fs_err(sdp, "can't start recoverd thread: %d\n", error);
 447                 goto fail_jinode_gh;
 448         }
 449         sdp->sd_recoverd_process = p;
 450
 451         return 0;
 452
 453  fail_recoverd:
 454         kthread_stop(sdp->sd_recoverd_process);
 455
 456  fail_jinode_gh:
 457         if (!sdp->sd_args.ar_spectator)
 458                 gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
 459
 460  fail_journal_gh:
 461         if (!sdp->sd_args.ar_spectator)
 462                 gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
 463
 464  fail_jindex:
 465         gfs2_jindex_free(sdp);
 466         if (jindex)
 467                 gfs2_glock_dq_uninit(&ji_gh);
 468
 469  fail:
 470         iput(sdp->sd_jindex);
 471
 472         return error;
 473 }
 474
 475
 476 static int init_inodes(struct gfs2_sbd *sdp, int undo)
 477 {
 478         int error = 0;
 479         struct gfs2_inode *ip;
 480         struct inode *inode;
 481
 482         if (undo)
 483                 goto fail_qinode;
 484
 485         inode = gfs2_lookup_root(sdp->sd_vfs, &sdp->sd_sb.sb_master_dir);
 486         if (IS_ERR(inode)) {
 487                 error = PTR_ERR(inode);
 488                 fs_err(sdp, "can't read in master directory: %d\n", error);
 489                 goto fail;
 490         }
 491         sdp->sd_master_dir = inode;
 492
 493         error = init_journal(sdp, undo);
 494         if (error)
 495                 goto fail_master;
 496
 497         /* Read in the master inode number inode */
 498         sdp->sd_inum_inode = gfs2_lookup_simple(sdp->sd_master_dir, "inum");
 499         if (IS_ERR(sdp->sd_inum_inode)) {
 500                 error = PTR_ERR(sdp->sd_inum_inode);
 501                 fs_err(sdp, "can't read in inum inode: %d\n", error);
 502                 goto fail_journal;
 503         }
 504
 505
 506         /* Read in the master statfs inode */
 507         sdp->sd_statfs_inode = gfs2_lookup_simple(sdp->sd_master_dir, "statfs");
 508         if (IS_ERR(sdp->sd_statfs_inode)) {
 509                 error = PTR_ERR(sdp->sd_statfs_inode);
 510                 fs_err(sdp, "can't read in statfs inode: %d\n", error);
 511                 goto fail_inum;
 512         }
 513
 514         /* Read in the resource index inode */
 515         sdp->sd_rindex = gfs2_lookup_simple(sdp->sd_master_dir, "rindex");
 516         if (IS_ERR(sdp->sd_rindex)) {
 517                 error = PTR_ERR(sdp->sd_rindex);
 518                 fs_err(sdp, "can't get resource index inode: %d\n", error);
 519                 goto fail_statfs;
 520         }
 521         ip = GFS2_I(sdp->sd_rindex);
 522         set_bit(GLF_STICKY, &ip->i_gl->gl_flags);
 523         sdp->sd_rindex_vn = ip->i_gl->gl_vn - 1;
 524
 525         /* Read in the quota inode */
 526         sdp->sd_quota_inode = gfs2_lookup_simple(sdp->sd_master_dir, "quota");
 527         if (IS_ERR(sdp->sd_quota_inode)) {
 528                 error = PTR_ERR(sdp->sd_quota_inode);
 529                 fs_err(sdp, "can't get quota file inode: %d\n", error);
 530                 goto fail_rindex;
 531         }
 532         return 0;
 533
 534 fail_qinode:
 535         iput(sdp->sd_quota_inode);
 536
 537 fail_rindex:
 538         gfs2_clear_rgrpd(sdp);
 539         iput(sdp->sd_rindex);
 540
 541 fail_statfs:
 542         iput(sdp->sd_statfs_inode);
 543
 544 fail_inum:
 545         iput(sdp->sd_inum_inode);
 546 fail_journal:
 547         init_journal(sdp, UNDO);
 548 fail_master:
 549         iput(sdp->sd_master_dir);
 550 fail:
 551         return error;
 552 }
 553
 554 static int init_per_node(struct gfs2_sbd *sdp, int undo)
 555 {
 556         struct inode *pn = NULL;
 557         char buf[30];
 558         int error = 0;
 559         struct gfs2_inode *ip;
 560
 561         if (sdp->sd_args.ar_spectator)
 562                 return 0;
 563
 564         if (undo)
 565                 goto fail_qc_gh;
 566
 567         pn = gfs2_lookup_simple(sdp->sd_master_dir, "per_node");
 568         if (IS_ERR(pn)) {
 569                 error = PTR_ERR(pn);
 570                 fs_err(sdp, "can't find per_node directory: %d\n", error);
 571                 return error;
 572         }
 573
 574         sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid);
 575         sdp->sd_ir_inode = gfs2_lookup_simple(pn, buf);
 576         if (IS_ERR(sdp->sd_ir_inode)) {
 577                 error = PTR_ERR(sdp->sd_ir_inode);
 578                 fs_err(sdp, "can't find local \"ir\" file: %d\n", error);
 579                 goto fail;
 580         }
 581
 582         sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid);
 583         sdp->sd_sc_inode = gfs2_lookup_simple(pn, buf);
 584         if (IS_ERR(sdp->sd_sc_inode)) {
 585                 error = PTR_ERR(sdp->sd_sc_inode);
 586                 fs_err(sdp, "can't find local \"sc\" file: %d\n", error);
 587                 goto fail_ir_i;
 588         }
 589
 590         sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid);
 591         sdp->sd_qc_inode = gfs2_lookup_simple(pn, buf);
 592         if (IS_ERR(sdp->sd_qc_inode)) {
 593                 error = PTR_ERR(sdp->sd_qc_inode);
 594                 fs_err(sdp, "can't find local \"qc\" file: %d\n", error);
 595                 goto fail_ut_i;
 596         }
 597
 598         iput(pn);
 599         pn = NULL;
 600
 601         ip = GFS2_I(sdp->sd_ir_inode);
 602         error = gfs2_glock_nq_init(ip->i_gl,
 603                                    LM_ST_EXCLUSIVE, 0,
 604                                    &sdp->sd_ir_gh);
 605         if (error) {
 606                 fs_err(sdp, "can't lock local \"ir\" file: %d\n", error);
 607                 goto fail_qc_i;
 608         }
 609
 610         ip = GFS2_I(sdp->sd_sc_inode);
 611         error = gfs2_glock_nq_init(ip->i_gl,
 612                                    LM_ST_EXCLUSIVE, 0,
 613                                    &sdp->sd_sc_gh);
 614         if (error) {
 615                 fs_err(sdp, "can't lock local \"sc\" file: %d\n", error);
 616                 goto fail_ir_gh;
 617         }
 618
 619         ip = GFS2_I(sdp->sd_qc_inode);
 620         error = gfs2_glock_nq_init(ip->i_gl,
 621                                    LM_ST_EXCLUSIVE, 0,
 622                                    &sdp->sd_qc_gh);
 623         if (error) {
 624                 fs_err(sdp, "can't lock local \"qc\" file: %d\n", error);
 625                 goto fail_ut_gh;
 626         }
 627
 628         return 0;
 629
 630  fail_qc_gh:
 631         gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
 632
 633  fail_ut_gh:
 634
 635         gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
 636
 637  fail_ir_gh:
 638         gfs2_glock_dq_uninit(&sdp->sd_ir_gh);
 639
 640  fail_qc_i:
 641         iput(sdp->sd_qc_inode);
 642
 643  fail_ut_i:
 644
 645         iput(sdp->sd_sc_inode);
 646
 647  fail_ir_i:
 648         iput(sdp->sd_ir_inode);
 649
 650  fail:
 651         if (pn)
 652                 iput(pn);
 653         return error;
 654 }
 655
 656 static int init_threads(struct gfs2_sbd *sdp, int undo)
 657 {
 658         struct task_struct *p;
 659         int error = 0;
 660
 661         if (undo)
 662                 goto fail_quotad;
 663
 664         sdp->sd_log_flush_time = jiffies;
 665         sdp->sd_jindex_refresh_time = jiffies;
 666
 667         p = kthread_run(gfs2_logd, sdp, "gfs2_logd");
 668         error = IS_ERR(p);
 669         if (error) {
 670                 fs_err(sdp, "can't start logd thread: %d\n", error);
 671                 return error;
 672         }
 673         sdp->sd_logd_process = p;
 674
 675         sdp->sd_statfs_sync_time = jiffies;
 676         sdp->sd_quota_sync_time = jiffies;
 677
 678         p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad");
 679         error = IS_ERR(p);
 680         if (error) {
 681                 fs_err(sdp, "can't start quotad thread: %d\n", error);
 682                 goto fail;
 683         }
 684         sdp->sd_quotad_process = p;
 685
 686         return 0;
 687
 688
 689 fail_quotad:
 690         kthread_stop(sdp->sd_quotad_process);
 691 fail:
 692         kthread_stop(sdp->sd_logd_process);
 693         return error;
 694 }
 695
 696 /**
 697  * fill_super - Read in superblock
 698  * @sb: The VFS superblock
 699  * @data: Mount options
 700  * @silent: Don't complain if it's not a GFS2 filesystem
 701  *
 702  * Returns: errno
 703  */
 704
 705 static int fill_super(struct super_block *sb, void *data, int silent)
 706 {
 707         struct gfs2_sbd *sdp;
 708         struct gfs2_holder mount_gh;
 709         int error;
 710
 711         sdp = init_sbd(sb);
 712         if (!sdp) {
 713                 printk(KERN_WARNING "GFS2: can't alloc struct gfs2_sbd\n");
 714                 return -ENOMEM;
 715         }
 716
 717         error = gfs2_mount_args(sdp, (char *)data, 0);
 718         if (error) {
 719                 printk(KERN_WARNING "GFS2: can't parse mount arguments\n");
 720                 goto fail;
 721         }
 722
 723         init_vfs(sb, SDF_NOATIME);
 724
 725         /* Set up the buffer cache and fill in some fake block size values
 726            to allow us to read-in the on-disk superblock. */
 727         sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK);
 728         sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits;
 729         sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift -
 730                                GFS2_BASIC_BLOCK_SHIFT;
 731         sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
 732
 733         error = init_names(sdp, silent);
 734         if (error)
 735                 goto fail;
 736
 737         error = gfs2_sys_fs_add(sdp);
 738         if (error)
 739                 goto fail;
 740
 741         error = gfs2_lm_mount(sdp, silent);
 742         if (error)
 743                 goto fail_sys;
 744
 745         error = init_locking(sdp, &mount_gh, DO);
 746         if (error)
 747                 goto fail_lm;
 748
 749         error = init_sb(sdp, silent, DO);
 750         if (error)
 751                 goto fail_locking;
 752
 753         error = init_inodes(sdp, DO);
 754         if (error)
 755                 goto fail_sb;
 756
 757         error = init_per_node(sdp, DO);
 758         if (error)
 759                 goto fail_inodes;
 760
 761         error = gfs2_statfs_init(sdp);
 762         if (error) {
 763                 fs_err(sdp, "can't initialize statfs subsystem: %d\n", error);
 764                 goto fail_per_node;
 765         }
 766
 767         error = init_threads(sdp, DO);
 768         if (error)
 769                 goto fail_per_node;
 770
 771         if (!(sb->s_flags & MS_RDONLY)) {
 772                 error = gfs2_make_fs_rw(sdp);
 773                 if (error) {
 774                         fs_err(sdp, "can't make FS RW: %d\n", error);
 775                         goto fail_threads;
 776                 }
 777         }
 778
 779         gfs2_glock_dq_uninit(&mount_gh);
 780
 781         return 0;
 782
 783  fail_threads:
 784         init_threads(sdp, UNDO);
 785
 786  fail_per_node:
 787         init_per_node(sdp, UNDO);
 788
 789  fail_inodes:
 790         init_inodes(sdp, UNDO);
 791
 792  fail_sb:
 793         init_sb(sdp, 0, UNDO);
 794
 795  fail_locking:
 796         init_locking(sdp, &mount_gh, UNDO);
 797
 798  fail_lm:
 799         gfs2_gl_hash_clear(sdp, WAIT);
 800         gfs2_lm_unmount(sdp);
 801         while (invalidate_inodes(sb))
 802                 yield();
 803
 804  fail_sys:
 805         gfs2_sys_fs_del(sdp);
 806
 807  fail:
 808         vfree(sdp);
 809         sb->s_fs_info = NULL;
 810
 811         return error;
 812 }
 813
 814 static int gfs2_get_sb(struct file_system_type *fs_type, int flags,
 815                 const char *dev_name, void *data, struct vfsmount *mnt)
 816 {
 817         return get_sb_bdev(fs_type, flags, dev_name, data, fill_super, mnt);
 818 }
 819
 820 static void gfs2_kill_sb(struct super_block *sb)
 821 {
 822         kill_block_super(sb);
 823 }
 824
 825 struct file_system_type gfs2_fs_type = {
 826         .name = "gfs2",
 827         .fs_flags = FS_REQUIRES_DEV,
 828         .get_sb = gfs2_get_sb,
 829         .kill_sb = gfs2_kill_sb,
 830         .owner = THIS_MODULE,
 831 };
 832
 833 struct file_system_type gfs2meta_fs_type = {
 834         .name = "gfs2meta",
 835         .fs_flags = FS_REQUIRES_DEV,
 836         .get_sb = gfs2_get_sb,
 837         .kill_sb = gfs2_kill_sb,
 838         .owner = THIS_MODULE,
 839 };
 840