SAFE public projects git trees. - safe/jmp/linux-2.6/blob - fs/gfs2/ops_fstype.c

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2005 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 <asm/semaphore.h>
  19
  20 #include "gfs2.h"
  21 #include "daemon.h"
  22 #include "glock.h"
  23 #include "glops.h"
  24 #include "inode.h"
  25 #include "lm.h"
  26 #include "mount.h"
  27 #include "ops_export.h"
  28 #include "ops_fstype.h"
  29 #include "ops_super.h"
  30 #include "recovery.h"
  31 #include "rgrp.h"
  32 #include "super.h"
  33 #include "unlinked.h"
  34 #include "sys.h"
  35
  36 #define DO 0
  37 #define UNDO 1
  38
  39 static struct gfs2_sbd *init_sbd(struct super_block *sb)
  40 {
  41         struct gfs2_sbd *sdp;
  42         unsigned int x;
  43
  44         sdp = vmalloc(sizeof(struct gfs2_sbd));
  45         if (!sdp)
  46                 return NULL;
  47
  48         memset(sdp, 0, sizeof(struct gfs2_sbd));
  49
  50         set_v2sdp(sb, sdp);
  51         sdp->sd_vfs = sb;
  52
  53         gfs2_tune_init(&sdp->sd_tune);
  54
  55         for (x = 0; x < GFS2_GL_HASH_SIZE; x++) {
  56                 sdp->sd_gl_hash[x].hb_lock = RW_LOCK_UNLOCKED;
  57                 INIT_LIST_HEAD(&sdp->sd_gl_hash[x].hb_list);
  58         }
  59         INIT_LIST_HEAD(&sdp->sd_reclaim_list);
  60         spin_lock_init(&sdp->sd_reclaim_lock);
  61         init_waitqueue_head(&sdp->sd_reclaim_wq);
  62         init_MUTEX(&sdp->sd_invalidate_inodes_mutex);
  63
  64         init_MUTEX(&sdp->sd_inum_mutex);
  65         spin_lock_init(&sdp->sd_statfs_spin);
  66         init_MUTEX(&sdp->sd_statfs_mutex);
  67
  68         spin_lock_init(&sdp->sd_rindex_spin);
  69         init_MUTEX(&sdp->sd_rindex_mutex);
  70         INIT_LIST_HEAD(&sdp->sd_rindex_list);
  71         INIT_LIST_HEAD(&sdp->sd_rindex_mru_list);
  72         INIT_LIST_HEAD(&sdp->sd_rindex_recent_list);
  73
  74         INIT_LIST_HEAD(&sdp->sd_jindex_list);
  75         spin_lock_init(&sdp->sd_jindex_spin);
  76         init_MUTEX(&sdp->sd_jindex_mutex);
  77
  78         INIT_LIST_HEAD(&sdp->sd_unlinked_list);
  79         spin_lock_init(&sdp->sd_unlinked_spin);
  80         init_MUTEX(&sdp->sd_unlinked_mutex);
  81
  82         INIT_LIST_HEAD(&sdp->sd_quota_list);
  83         spin_lock_init(&sdp->sd_quota_spin);
  84         init_MUTEX(&sdp->sd_quota_mutex);
  85
  86         spin_lock_init(&sdp->sd_log_lock);
  87         init_waitqueue_head(&sdp->sd_log_trans_wq);
  88         init_waitqueue_head(&sdp->sd_log_flush_wq);
  89
  90         INIT_LIST_HEAD(&sdp->sd_log_le_gl);
  91         INIT_LIST_HEAD(&sdp->sd_log_le_buf);
  92         INIT_LIST_HEAD(&sdp->sd_log_le_revoke);
  93         INIT_LIST_HEAD(&sdp->sd_log_le_rg);
  94         INIT_LIST_HEAD(&sdp->sd_log_le_databuf);
  95
  96         INIT_LIST_HEAD(&sdp->sd_log_blks_list);
  97         init_waitqueue_head(&sdp->sd_log_blks_wait);
  98
  99         INIT_LIST_HEAD(&sdp->sd_ail1_list);
 100         INIT_LIST_HEAD(&sdp->sd_ail2_list);
 101
 102         init_MUTEX(&sdp->sd_log_flush_lock);
 103         INIT_LIST_HEAD(&sdp->sd_log_flush_list);
 104
 105         INIT_LIST_HEAD(&sdp->sd_revoke_list);
 106
 107         init_MUTEX(&sdp->sd_freeze_lock);
 108
 109         return sdp;
 110 }
 111
 112 static void init_vfs(struct gfs2_sbd *sdp)
 113 {
 114         struct super_block *sb = sdp->sd_vfs;
 115
 116         sb->s_magic = GFS2_MAGIC;
 117         sb->s_op = &gfs2_super_ops;
 118         sb->s_export_op = &gfs2_export_ops;
 119         sb->s_maxbytes = MAX_LFS_FILESIZE;
 120
 121         if (sb->s_flags & (MS_NOATIME | MS_NODIRATIME))
 122                 set_bit(SDF_NOATIME, &sdp->sd_flags);
 123
 124         /* Don't let the VFS update atimes.  GFS2 handles this itself. */
 125         sb->s_flags |= MS_NOATIME | MS_NODIRATIME;
 126
 127         /* Set up the buffer cache and fill in some fake block size values
 128            to allow us to read-in the on-disk superblock. */
 129         sdp->sd_sb.sb_bsize = sb_min_blocksize(sb, GFS2_BASIC_BLOCK);
 130         sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits;
 131         sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift - GFS2_BASIC_BLOCK_SHIFT;
 132         sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
 133 }
 134
 135 static int init_names(struct gfs2_sbd *sdp, int silent)
 136 {
 137         struct gfs2_sb *sb = NULL;
 138         char *proto, *table;
 139         int error = 0;
 140
 141         proto = sdp->sd_args.ar_lockproto;
 142         table = sdp->sd_args.ar_locktable;
 143
 144         /*  Try to autodetect  */
 145
 146         if (!proto[0] || !table[0]) {
 147                 struct buffer_head *bh;
 148                 bh = sb_getblk(sdp->sd_vfs,
 149                                GFS2_SB_ADDR >> sdp->sd_fsb2bb_shift);
 150                 lock_buffer(bh);
 151                 clear_buffer_uptodate(bh);
 152                 clear_buffer_dirty(bh);
 153                 unlock_buffer(bh);
 154                 ll_rw_block(READ, 1, &bh);
 155                 wait_on_buffer(bh);
 156
 157                 if (!buffer_uptodate(bh)) {
 158                         brelse(bh);
 159                         return -EIO;
 160                 }
 161
 162                 sb = kmalloc(sizeof(struct gfs2_sb), GFP_KERNEL);
 163                 if (!sb) {
 164                         brelse(bh);
 165                         return -ENOMEM;
 166                 }
 167                 gfs2_sb_in(sb, bh->b_data);
 168                 brelse(bh);
 169
 170                 error = gfs2_check_sb(sdp, sb, silent);
 171                 if (error)
 172                         goto out;
 173
 174                 if (!proto[0])
 175                         proto = sb->sb_lockproto;
 176                 if (!table[0])
 177                         table = sb->sb_locktable;
 178         }
 179
 180         if (!table[0])
 181                 table = sdp->sd_vfs->s_id;
 182
 183         snprintf(sdp->sd_proto_name, GFS2_FSNAME_LEN, "%s", proto);
 184         snprintf(sdp->sd_table_name, GFS2_FSNAME_LEN, "%s", table);
 185
 186  out:
 187         kfree(sb);
 188
 189         return error;
 190 }
 191
 192 static int init_locking(struct gfs2_sbd *sdp, struct gfs2_holder *mount_gh,
 193                         int undo)
 194 {
 195         struct task_struct *p;
 196         int error = 0;
 197
 198         if (undo)
 199                 goto fail_trans;
 200
 201         p = kthread_run(gfs2_scand, sdp, "gfs2_scand");
 202         error = IS_ERR(p);
 203         if (error) {
 204                 fs_err(sdp, "can't start scand thread: %d\n", error);
 205                 return error;
 206         }
 207         sdp->sd_scand_process = p;
 208
 209         for (sdp->sd_glockd_num = 0;
 210              sdp->sd_glockd_num < sdp->sd_args.ar_num_glockd;
 211              sdp->sd_glockd_num++) {
 212                 p = kthread_run(gfs2_glockd, sdp, "gfs2_glockd");
 213                 error = IS_ERR(p);
 214                 if (error) {
 215                         fs_err(sdp, "can't start glockd thread: %d\n", error);
 216                         goto fail;
 217                 }
 218                 sdp->sd_glockd_process[sdp->sd_glockd_num] = p;
 219         }
 220
 221         error = gfs2_glock_nq_num(sdp,
 222                                   GFS2_MOUNT_LOCK, &gfs2_nondisk_glops,
 223                                   LM_ST_EXCLUSIVE, LM_FLAG_NOEXP | GL_NOCACHE,
 224                                   mount_gh);
 225         if (error) {
 226                 fs_err(sdp, "can't acquire mount glock: %d\n", error);
 227                 goto fail;
 228         }
 229
 230         error = gfs2_glock_nq_num(sdp,
 231                                   GFS2_LIVE_LOCK, &gfs2_nondisk_glops,
 232                                   LM_ST_SHARED,
 233                                   LM_FLAG_NOEXP | GL_EXACT | GL_NEVER_RECURSE,
 234                                   &sdp->sd_live_gh);
 235         if (error) {
 236                 fs_err(sdp, "can't acquire live glock: %d\n", error);
 237                 goto fail_mount;
 238         }
 239
 240         error = gfs2_glock_get(sdp, GFS2_RENAME_LOCK, &gfs2_nondisk_glops,
 241                                CREATE, &sdp->sd_rename_gl);
 242         if (error) {
 243                 fs_err(sdp, "can't create rename glock: %d\n", error);
 244                 goto fail_live;
 245         }
 246
 247         error = gfs2_glock_get(sdp, GFS2_TRANS_LOCK, &gfs2_trans_glops,
 248                                CREATE, &sdp->sd_trans_gl);
 249         if (error) {
 250                 fs_err(sdp, "can't create transaction glock: %d\n", error);
 251                 goto fail_rename;
 252         }
 253         set_bit(GLF_STICKY, &sdp->sd_trans_gl->gl_flags);
 254
 255         return 0;
 256
 257  fail_trans:
 258         gfs2_glock_put(sdp->sd_trans_gl);
 259
 260  fail_rename:
 261         gfs2_glock_put(sdp->sd_rename_gl);
 262
 263  fail_live:
 264         gfs2_glock_dq_uninit(&sdp->sd_live_gh);
 265
 266  fail_mount:
 267         gfs2_glock_dq_uninit(mount_gh);
 268
 269  fail:
 270         while (sdp->sd_glockd_num--)
 271                 kthread_stop(sdp->sd_glockd_process[sdp->sd_glockd_num]);
 272
 273         kthread_stop(sdp->sd_scand_process);
 274
 275         return error;
 276 }
 277
 278 static int init_sb(struct gfs2_sbd *sdp, int silent, int undo)
 279 {
 280         struct super_block *sb = sdp->sd_vfs;
 281         struct gfs2_holder sb_gh;
 282         int error = 0;
 283
 284         if (undo) {
 285                 gfs2_inode_put(sdp->sd_master_dir);
 286                 return 0;
 287         }
 288
 289         error = gfs2_glock_nq_num(sdp,
 290                                  GFS2_SB_LOCK, &gfs2_meta_glops,
 291                                  LM_ST_SHARED, 0, &sb_gh);
 292         if (error) {
 293                 fs_err(sdp, "can't acquire superblock glock: %d\n", error);
 294                 return error;
 295         }
 296
 297         error = gfs2_read_sb(sdp, sb_gh.gh_gl, silent);
 298         if (error) {
 299                 fs_err(sdp, "can't read superblock: %d\n", error);
 300                 goto out;
 301         }
 302
 303         /* Set up the buffer cache and SB for real */
 304         error = -EINVAL;
 305         if (sdp->sd_sb.sb_bsize < bdev_hardsect_size(sb->s_bdev)) {
 306                 fs_err(sdp, "FS block size (%u) is too small for device "
 307                        "block size (%u)\n",
 308                        sdp->sd_sb.sb_bsize, bdev_hardsect_size(sb->s_bdev));
 309                 goto out;
 310         }
 311         if (sdp->sd_sb.sb_bsize > PAGE_SIZE) {
 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
 318         /* Get rid of buffers from the original block size */
 319         sb_gh.gh_gl->gl_ops->go_inval(sb_gh.gh_gl, DIO_METADATA | DIO_DATA);
 320         sb_gh.gh_gl->gl_aspace->i_blkbits = sdp->sd_sb.sb_bsize_shift;
 321
 322         sb_set_blocksize(sb, sdp->sd_sb.sb_bsize);
 323
 324         error = gfs2_lookup_master_dir(sdp);
 325         if (error)
 326                 fs_err(sdp, "can't read in master directory: %d\n", error);
 327
 328  out:
 329         gfs2_glock_dq_uninit(&sb_gh);
 330
 331         return error;
 332 }
 333
 334 static int init_journal(struct gfs2_sbd *sdp, int undo)
 335 {
 336         struct gfs2_holder ji_gh;
 337         struct task_struct *p;
 338         int jindex = 1;
 339         int error = 0;
 340
 341         if (undo) {
 342                 jindex = 0;
 343                 goto fail_recoverd;
 344         }
 345
 346         error = gfs2_lookup_simple(sdp->sd_master_dir, "jindex",
 347                                    &sdp->sd_jindex);
 348         if (error) {
 349                 fs_err(sdp, "can't lookup journal index: %d\n", error);
 350                 return error;
 351         }
 352         set_bit(GLF_STICKY, &sdp->sd_jindex->i_gl->gl_flags);
 353
 354         /* Load in the journal index special file */
 355
 356         error = gfs2_jindex_hold(sdp, &ji_gh);
 357         if (error) {
 358                 fs_err(sdp, "can't read journal index: %d\n", error);
 359                 goto fail;
 360         }
 361
 362         error = -EINVAL;
 363         if (!gfs2_jindex_size(sdp)) {
 364                 fs_err(sdp, "no journals!\n");
 365                 goto fail_jindex;
 366         }
 367
 368         if (sdp->sd_args.ar_spectator) {
 369                 sdp->sd_jdesc = gfs2_jdesc_find(sdp, 0);
 370                 sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks;
 371         } else {
 372                 if (sdp->sd_lockstruct.ls_jid >= gfs2_jindex_size(sdp)) {
 373                         fs_err(sdp, "can't mount journal #%u\n",
 374                                sdp->sd_lockstruct.ls_jid);
 375                         fs_err(sdp, "there are only %u journals (0 - %u)\n",
 376                                gfs2_jindex_size(sdp),
 377                                gfs2_jindex_size(sdp) - 1);
 378                         goto fail_jindex;
 379                 }
 380                 sdp->sd_jdesc = gfs2_jdesc_find(sdp, sdp->sd_lockstruct.ls_jid);
 381
 382                 error = gfs2_glock_nq_num(sdp,
 383                                           sdp->sd_lockstruct.ls_jid,
 384                                           &gfs2_journal_glops,
 385                                           LM_ST_EXCLUSIVE, LM_FLAG_NOEXP,
 386                                           &sdp->sd_journal_gh);
 387                 if (error) {
 388                         fs_err(sdp, "can't acquire journal glock: %d\n", error);
 389                         goto fail_jindex;
 390                 }
 391
 392                 error = gfs2_glock_nq_init(sdp->sd_jdesc->jd_inode->i_gl,
 393                                            LM_ST_SHARED,
 394                                            LM_FLAG_NOEXP | GL_EXACT,
 395                                            &sdp->sd_jinode_gh);
 396                 if (error) {
 397                         fs_err(sdp, "can't acquire journal inode glock: %d\n",
 398                                error);
 399                         goto fail_journal_gh;
 400                 }
 401
 402                 error = gfs2_jdesc_check(sdp->sd_jdesc);
 403                 if (error) {
 404                         fs_err(sdp, "my journal (%u) is bad: %d\n",
 405                                sdp->sd_jdesc->jd_jid, error);
 406                         goto fail_jinode_gh;
 407                 }
 408                 sdp->sd_log_blks_free = sdp->sd_jdesc->jd_blocks;
 409         }
 410
 411         if (sdp->sd_lockstruct.ls_first) {
 412                 unsigned int x;
 413                 for (x = 0; x < sdp->sd_journals; x++) {
 414                         error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x),
 415                                                      WAIT);
 416                         if (error) {
 417                                 fs_err(sdp, "error recovering journal %u: %d\n",
 418                                        x, error);
 419                                 goto fail_jinode_gh;
 420                         }
 421                 }
 422
 423                 gfs2_lm_others_may_mount(sdp);
 424         } else if (!sdp->sd_args.ar_spectator) {
 425                 error = gfs2_recover_journal(sdp->sd_jdesc, WAIT);
 426                 if (error) {
 427                         fs_err(sdp, "error recovering my journal: %d\n", error);
 428                         goto fail_jinode_gh;
 429                 }
 430         }
 431
 432         set_bit(SDF_JOURNAL_CHECKED, &sdp->sd_flags);
 433         gfs2_glock_dq_uninit(&ji_gh);
 434         jindex = 0;
 435
 436         /* Disown my Journal glock */
 437
 438         sdp->sd_journal_gh.gh_owner = NULL;
 439         sdp->sd_jinode_gh.gh_owner = NULL;
 440
 441         p = kthread_run(gfs2_recoverd, sdp, "gfs2_recoverd");
 442         error = IS_ERR(p);
 443         if (error) {
 444                 fs_err(sdp, "can't start recoverd thread: %d\n", error);
 445                 goto fail_jinode_gh;
 446         }
 447         sdp->sd_recoverd_process = p;
 448
 449         return 0;
 450
 451  fail_recoverd:
 452         kthread_stop(sdp->sd_recoverd_process);
 453
 454  fail_jinode_gh:
 455         if (!sdp->sd_args.ar_spectator)
 456                 gfs2_glock_dq_uninit(&sdp->sd_jinode_gh);
 457
 458  fail_journal_gh:
 459         if (!sdp->sd_args.ar_spectator)
 460                 gfs2_glock_dq_uninit(&sdp->sd_journal_gh);
 461
 462  fail_jindex:
 463         gfs2_jindex_free(sdp);
 464         if (jindex)
 465                 gfs2_glock_dq_uninit(&ji_gh);
 466
 467  fail:
 468         gfs2_inode_put(sdp->sd_jindex);
 469
 470         return error;
 471 }
 472
 473 int gfs2_lookup_root(struct gfs2_sbd *sdp)
 474 {
 475         int error;
 476         struct gfs2_glock *gl;
 477
 478         error = gfs2_glock_get(sdp, sdp->sd_sb.sb_root_dir.no_addr,
 479                                &gfs2_inode_glops, CREATE, &gl);
 480         if (!error) {
 481                 error = gfs2_inode_get(gl, &sdp->sd_sb.sb_root_dir,
 482                                                 CREATE, &sdp->sd_root_dir);
 483                 if (!error)
 484                         gfs2_inode_min_init(sdp->sd_root_dir, DT_DIR);
 485                 gfs2_glock_put(gl);
 486         }
 487
 488         return error;
 489 }
 490
 491
 492 static int init_inodes(struct gfs2_sbd *sdp, int undo)
 493 {
 494         struct inode *inode;
 495         struct dentry **dentry = &sdp->sd_vfs->s_root;
 496         int error = 0;
 497
 498         if (undo)
 499                 goto fail_dput;
 500
 501         /* Read in the master inode number inode */
 502         error = gfs2_lookup_simple(sdp->sd_master_dir, "inum",
 503                                    &sdp->sd_inum_inode);
 504         if (error) {
 505                 fs_err(sdp, "can't read in inum inode: %d\n", error);
 506                 return error;
 507         }
 508
 509         /* Read in the master statfs inode */
 510         error = gfs2_lookup_simple(sdp->sd_master_dir, "statfs",
 511                                    &sdp->sd_statfs_inode);
 512         if (error) {
 513                 fs_err(sdp, "can't read in statfs inode: %d\n", error);
 514                 goto fail;
 515         }
 516
 517         /* Read in the resource index inode */
 518         error = gfs2_lookup_simple(sdp->sd_master_dir, "rindex",
 519                                    &sdp->sd_rindex);
 520         if (error) {
 521                 fs_err(sdp, "can't get resource index inode: %d\n", error);
 522                 goto fail_statfs;
 523         }
 524         set_bit(GLF_STICKY, &sdp->sd_rindex->i_gl->gl_flags);
 525         sdp->sd_rindex_vn = sdp->sd_rindex->i_gl->gl_vn - 1;
 526
 527         /* Read in the quota inode */
 528         error = gfs2_lookup_simple(sdp->sd_master_dir, "quota",
 529                                    &sdp->sd_quota_inode);
 530         if (error) {
 531                 fs_err(sdp, "can't get quota file inode: %d\n", error);
 532                 goto fail_rindex;
 533         }
 534
 535         /* Get the root inode */
 536         error = gfs2_lookup_root(sdp);
 537         if (error) {
 538                 fs_err(sdp, "can't read in root inode: %d\n", error);
 539                 goto fail_qinode;
 540         }
 541
 542         /* Get the root inode/dentry */
 543         inode = gfs2_ip2v(sdp->sd_root_dir);
 544         if (!inode) {
 545                 fs_err(sdp, "can't get root inode\n");
 546                 error = -ENOMEM;
 547                 goto fail_rooti;
 548         }
 549
 550         *dentry = d_alloc_root(inode);
 551         if (!*dentry) {
 552                 iput(inode);
 553                 fs_err(sdp, "can't get root dentry\n");
 554                 error = -ENOMEM;
 555                 goto fail_rooti;
 556         }
 557
 558         return 0;
 559
 560  fail_dput:
 561         dput(*dentry);
 562         *dentry = NULL;
 563
 564  fail_rooti:
 565         gfs2_inode_put(sdp->sd_root_dir);
 566
 567  fail_qinode:
 568         gfs2_inode_put(sdp->sd_quota_inode);
 569
 570  fail_rindex:
 571         gfs2_clear_rgrpd(sdp);
 572         gfs2_inode_put(sdp->sd_rindex);
 573
 574  fail_statfs:
 575         gfs2_inode_put(sdp->sd_statfs_inode);
 576
 577  fail:
 578         gfs2_inode_put(sdp->sd_inum_inode);
 579
 580         return error;
 581 }
 582
 583 static int init_per_node(struct gfs2_sbd *sdp, int undo)
 584 {
 585         struct gfs2_inode *pn = NULL;
 586         char buf[30];
 587         int error = 0;
 588
 589         if (sdp->sd_args.ar_spectator)
 590                 return 0;
 591
 592         if (undo)
 593                 goto fail_qc_gh;
 594
 595         error = gfs2_lookup_simple(sdp->sd_master_dir, "per_node", &pn);
 596         if (error) {
 597                 fs_err(sdp, "can't find per_node directory: %d\n", error);
 598                 return error;
 599         }
 600
 601         sprintf(buf, "inum_range%u", sdp->sd_jdesc->jd_jid);
 602         error = gfs2_lookup_simple(pn, buf, &sdp->sd_ir_inode);
 603         if (error) {
 604                 fs_err(sdp, "can't find local \"ir\" file: %d\n", error);
 605                 goto fail;
 606         }
 607
 608         sprintf(buf, "statfs_change%u", sdp->sd_jdesc->jd_jid);
 609         error = gfs2_lookup_simple(pn, buf, &sdp->sd_sc_inode);
 610         if (error) {
 611                 fs_err(sdp, "can't find local \"sc\" file: %d\n", error);
 612                 goto fail_ir_i;
 613         }
 614
 615         sprintf(buf, "unlinked_tag%u", sdp->sd_jdesc->jd_jid);
 616         error = gfs2_lookup_simple(pn, buf, &sdp->sd_ut_inode);
 617         if (error) {
 618                 fs_err(sdp, "can't find local \"ut\" file: %d\n", error);
 619                 goto fail_sc_i;
 620         }
 621
 622         sprintf(buf, "quota_change%u", sdp->sd_jdesc->jd_jid);
 623         error = gfs2_lookup_simple(pn, buf, &sdp->sd_qc_inode);
 624         if (error) {
 625                 fs_err(sdp, "can't find local \"qc\" file: %d\n", error);
 626                 goto fail_ut_i;
 627         }
 628
 629         gfs2_inode_put(pn);
 630         pn = NULL;
 631
 632         error = gfs2_glock_nq_init(sdp->sd_ir_inode->i_gl,
 633                                    LM_ST_EXCLUSIVE, GL_NEVER_RECURSE,
 634                                    &sdp->sd_ir_gh);
 635         if (error) {
 636                 fs_err(sdp, "can't lock local \"ir\" file: %d\n", error);
 637                 goto fail_qc_i;
 638         }
 639
 640         error = gfs2_glock_nq_init(sdp->sd_sc_inode->i_gl,
 641                                    LM_ST_EXCLUSIVE, GL_NEVER_RECURSE,
 642                                    &sdp->sd_sc_gh);
 643         if (error) {
 644                 fs_err(sdp, "can't lock local \"sc\" file: %d\n", error);
 645                 goto fail_ir_gh;
 646         }
 647
 648         error = gfs2_glock_nq_init(sdp->sd_ut_inode->i_gl,
 649                                    LM_ST_EXCLUSIVE, GL_NEVER_RECURSE,
 650                                    &sdp->sd_ut_gh);
 651         if (error) {
 652                 fs_err(sdp, "can't lock local \"ut\" file: %d\n", error);
 653                 goto fail_sc_gh;
 654         }
 655
 656         error = gfs2_glock_nq_init(sdp->sd_qc_inode->i_gl,
 657                                    LM_ST_EXCLUSIVE, GL_NEVER_RECURSE,
 658                                    &sdp->sd_qc_gh);
 659         if (error) {
 660                 fs_err(sdp, "can't lock local \"qc\" file: %d\n", error);
 661                 goto fail_ut_gh;
 662         }
 663
 664         return 0;
 665
 666  fail_qc_gh:
 667         gfs2_glock_dq_uninit(&sdp->sd_qc_gh);
 668
 669  fail_ut_gh:
 670         gfs2_glock_dq_uninit(&sdp->sd_ut_gh);
 671
 672  fail_sc_gh:
 673         gfs2_glock_dq_uninit(&sdp->sd_sc_gh);
 674
 675  fail_ir_gh:
 676         gfs2_glock_dq_uninit(&sdp->sd_ir_gh);
 677
 678  fail_qc_i:
 679         gfs2_inode_put(sdp->sd_qc_inode);
 680
 681  fail_ut_i:
 682         gfs2_inode_put(sdp->sd_ut_inode);
 683
 684  fail_sc_i:
 685         gfs2_inode_put(sdp->sd_sc_inode);
 686
 687  fail_ir_i:
 688         gfs2_inode_put(sdp->sd_ir_inode);
 689
 690  fail:
 691         if (pn)
 692                 gfs2_inode_put(pn);
 693         return error;
 694 }
 695
 696 static int init_threads(struct gfs2_sbd *sdp, int undo)
 697 {
 698         struct task_struct *p;
 699         int error = 0;
 700
 701         if (undo)
 702                 goto fail_inoded;
 703
 704         sdp->sd_log_flush_time = jiffies;
 705         sdp->sd_jindex_refresh_time = jiffies;
 706
 707         p = kthread_run(gfs2_logd, sdp, "gfs2_logd");
 708         error = IS_ERR(p);
 709         if (error) {
 710                 fs_err(sdp, "can't start logd thread: %d\n", error);
 711                 return error;
 712         }
 713         sdp->sd_logd_process = p;
 714
 715         sdp->sd_statfs_sync_time = jiffies;
 716         sdp->sd_quota_sync_time = jiffies;
 717
 718         p = kthread_run(gfs2_quotad, sdp, "gfs2_quotad");
 719         error = IS_ERR(p);
 720         if (error) {
 721                 fs_err(sdp, "can't start quotad thread: %d\n", error);
 722                 goto fail;
 723         }
 724         sdp->sd_quotad_process = p;
 725
 726         p = kthread_run(gfs2_inoded, sdp, "gfs2_inoded");
 727         error = IS_ERR(p);
 728         if (error) {
 729                 fs_err(sdp, "can't start inoded thread: %d\n", error);
 730                 goto fail_quotad;
 731         }
 732         sdp->sd_inoded_process = p;
 733
 734         return 0;
 735
 736  fail_inoded:
 737         kthread_stop(sdp->sd_inoded_process);
 738
 739  fail_quotad:
 740         kthread_stop(sdp->sd_quotad_process);
 741
 742  fail:
 743         kthread_stop(sdp->sd_logd_process);
 744
 745         return error;
 746 }
 747
 748 /**
 749  * fill_super - Read in superblock
 750  * @sb: The VFS superblock
 751  * @data: Mount options
 752  * @silent: Don't complain if it's not a GFS2 filesystem
 753  *
 754  * Returns: errno
 755  */
 756
 757 static int fill_super(struct super_block *sb, void *data, int silent)
 758 {
 759         struct gfs2_sbd *sdp;
 760         struct gfs2_holder mount_gh;
 761         int error;
 762
 763         sdp = init_sbd(sb);
 764         if (!sdp) {
 765                 printk("GFS2: can't alloc struct gfs2_sbd\n");
 766                 return -ENOMEM;
 767         }
 768
 769         error = gfs2_mount_args(sdp, (char *)data, 0);
 770         if (error) {
 771                 printk("GFS2: can't parse mount arguments\n");
 772                 goto fail;
 773         }
 774
 775         init_vfs(sdp);
 776
 777         error = init_names(sdp, silent);
 778         if (error)
 779                 goto fail;
 780
 781         error = gfs2_sys_fs_add(sdp);
 782         if (error)
 783                 goto fail;
 784
 785         error = gfs2_lm_mount(sdp, silent);
 786         if (error)
 787                 goto fail_sys;
 788
 789         error = init_locking(sdp, &mount_gh, DO);
 790         if (error)
 791                 goto fail_lm;
 792
 793         error = init_sb(sdp, silent, DO);
 794         if (error)
 795                 goto fail_locking;
 796
 797         error = init_journal(sdp, DO);
 798         if (error)
 799                 goto fail_sb;
 800
 801         error = init_inodes(sdp, DO);
 802         if (error)
 803                 goto fail_journals;
 804
 805         error = init_per_node(sdp, DO);
 806         if (error)
 807                 goto fail_inodes;
 808
 809         error = gfs2_statfs_init(sdp);
 810         if (error) {
 811                 fs_err(sdp, "can't initialize statfs subsystem: %d\n", error);
 812                 goto fail_per_node;
 813         }
 814
 815         error = init_threads(sdp, DO);
 816         if (error)
 817                 goto fail_per_node;
 818
 819         if (!(sb->s_flags & MS_RDONLY)) {
 820                 error = gfs2_make_fs_rw(sdp);
 821                 if (error) {
 822                         fs_err(sdp, "can't make FS RW: %d\n", error);
 823                         goto fail_threads;
 824                 }
 825         }
 826
 827         gfs2_glock_dq_uninit(&mount_gh);
 828
 829         return 0;
 830
 831  fail_threads:
 832         init_threads(sdp, UNDO);
 833
 834  fail_per_node:
 835         init_per_node(sdp, UNDO);
 836
 837  fail_inodes:
 838         init_inodes(sdp, UNDO);
 839
 840  fail_journals:
 841         init_journal(sdp, UNDO);
 842
 843  fail_sb:
 844         init_sb(sdp, 0, UNDO);
 845
 846  fail_locking:
 847         init_locking(sdp, &mount_gh, UNDO);
 848
 849  fail_lm:
 850         gfs2_gl_hash_clear(sdp, WAIT);
 851         gfs2_lm_unmount(sdp);
 852         while (invalidate_inodes(sb))
 853                 yield();
 854
 855  fail_sys:
 856         gfs2_sys_fs_del(sdp);
 857
 858  fail:
 859         vfree(sdp);
 860         set_v2sdp(sb, NULL);
 861
 862         return error;
 863 }
 864
 865 static struct super_block *gfs2_get_sb(struct file_system_type *fs_type,
 866                                        int flags, const char *dev_name,
 867                                        void *data)
 868 {
 869         return get_sb_bdev(fs_type, flags, dev_name, data, fill_super);
 870 }
 871
 872 struct file_system_type gfs2_fs_type = {
 873         .name = "gfs2",
 874         .fs_flags = FS_REQUIRES_DEV,
 875         .get_sb = gfs2_get_sb,
 876         .kill_sb = kill_block_super,
 877         .owner = THIS_MODULE,
 878 };
 879