fs/gfs2/glops.c

   1 /*
   2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
   3  * Copyright (C) 2004-2008 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 version 2.
   8  */
   9
  10 #include <linux/spinlock.h>
  11 #include <linux/completion.h>
  12 #include <linux/buffer_head.h>
  13 #include <linux/gfs2_ondisk.h>
  14 #include <linux/bio.h>
  15 #include <linux/posix_acl.h>
  16 #include <linux/security.h>
  17
  18 #include "gfs2.h"
  19 #include "incore.h"
  20 #include "bmap.h"
  21 #include "glock.h"
  22 #include "glops.h"
  23 #include "inode.h"
  24 #include "log.h"
  25 #include "meta_io.h"
  26 #include "recovery.h"
  27 #include "rgrp.h"
  28 #include "util.h"
  29 #include "trans.h"
  30 #include "dir.h"
  31
  32 struct workqueue_struct *gfs2_freeze_wq;
  33
  34 static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
  35 {
  36         fs_err(gl->gl_name.ln_sbd,
  37                "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page "
  38                "state 0x%lx\n",
  39                bh, (unsigned long long)bh->b_blocknr, bh->b_state,
  40                bh->b_page->mapping, bh->b_page->flags);
  41         fs_err(gl->gl_name.ln_sbd, "AIL glock %u:%llu mapping %p\n",
  42                gl->gl_name.ln_type, gl->gl_name.ln_number,
  43                gfs2_glock2aspace(gl));
  44         gfs2_lm_withdraw(gl->gl_name.ln_sbd, "AIL error\n");
  45 }
  46
  47 /**
  48  * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
  49  * @gl: the glock
  50  * @fsync: set when called from fsync (not all buffers will be clean)
  51  *
  52  * None of the buffers should be dirty, locked, or pinned.
  53  */
  54
  55 static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
  56                              unsigned int nr_revokes)
  57 {
  58         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
  59         struct list_head *head = &gl->gl_ail_list;
  60         struct gfs2_bufdata *bd, *tmp;
  61         struct buffer_head *bh;
  62         const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
  63
  64         gfs2_log_lock(sdp);
  65         spin_lock(&sdp->sd_ail_lock);
  66         list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
  67                 if (nr_revokes == 0)
  68                         break;
  69                 bh = bd->bd_bh;
  70                 if (bh->b_state & b_state) {
  71                         if (fsync)
  72                                 continue;
  73                         gfs2_ail_error(gl, bh);
  74                 }
  75                 gfs2_trans_add_revoke(sdp, bd);
  76                 nr_revokes--;
  77         }
  78         GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
  79         spin_unlock(&sdp->sd_ail_lock);
  80         gfs2_log_unlock(sdp);
  81 }
  82
  83
  84 static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
  85 {
  86         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
  87         struct gfs2_trans tr;
  88
  89         memset(&tr, 0, sizeof(tr));
  90         INIT_LIST_HEAD(&tr.tr_buf);
  91         INIT_LIST_HEAD(&tr.tr_databuf);
  92         tr.tr_revokes = atomic_read(&gl->gl_ail_count);
  93
  94         if (!tr.tr_revokes)
  95                 return;
  96
  97         /* A shortened, inline version of gfs2_trans_begin()
  98          * tr->alloced is not set since the transaction structure is
  99          * on the stack */
 100         tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
 101         tr.tr_ip = _RET_IP_;
 102         if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0)
 103                 return;
 104         WARN_ON_ONCE(current->journal_info);
 105         current->journal_info = &tr;
 106
 107         __gfs2_ail_flush(gl, 0, tr.tr_revokes);
 108
 109         gfs2_trans_end(sdp);
 110         gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
 111 }
 112
 113 void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
 114 {
 115         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 116         unsigned int revokes = atomic_read(&gl->gl_ail_count);
 117         unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64);
 118         int ret;
 119
 120         if (!revokes)
 121                 return;
 122
 123         while (revokes > max_revokes)
 124                 max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64);
 125
 126         ret = gfs2_trans_begin(sdp, 0, max_revokes);
 127         if (ret)
 128                 return;
 129         __gfs2_ail_flush(gl, fsync, max_revokes);
 130         gfs2_trans_end(sdp);
 131         gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
 132 }
 133
 134 /**
 135  * rgrp_go_sync - sync out the metadata for this glock
 136  * @gl: the glock
 137  *
 138  * Called when demoting or unlocking an EX glock.  We must flush
 139  * to disk all dirty buffers/pages relating to this glock, and must not
 140  * return to caller to demote/unlock the glock until I/O is complete.
 141  */
 142
 143 static void rgrp_go_sync(struct gfs2_glock *gl)
 144 {
 145         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 146         struct address_space *mapping = &sdp->sd_aspace;
 147         struct gfs2_rgrpd *rgd;
 148         int error;
 149
 150         spin_lock(&gl->gl_lockref.lock);
 151         rgd = gl->gl_object;
 152         if (rgd)
 153                 gfs2_rgrp_brelse(rgd);
 154         spin_unlock(&gl->gl_lockref.lock);
 155
 156         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 157                 return;
 158         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 159
 160         gfs2_log_flush(sdp, gl, NORMAL_FLUSH);
 161         filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 162         error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 163         mapping_set_error(mapping, error);
 164         gfs2_ail_empty_gl(gl);
 165
 166         spin_lock(&gl->gl_lockref.lock);
 167         rgd = gl->gl_object;
 168         if (rgd)
 169                 gfs2_free_clones(rgd);
 170         spin_unlock(&gl->gl_lockref.lock);
 171 }
 172
 173 /**
 174  * rgrp_go_inval - invalidate the metadata for this glock
 175  * @gl: the glock
 176  * @flags:
 177  *
 178  * We never used LM_ST_DEFERRED with resource groups, so that we
 179  * should always see the metadata flag set here.
 180  *
 181  */
 182
 183 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
 184 {
 185         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 186         struct address_space *mapping = &sdp->sd_aspace;
 187         struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
 188
 189         if (rgd)
 190                 gfs2_rgrp_brelse(rgd);
 191
 192         WARN_ON_ONCE(!(flags & DIO_METADATA));
 193         gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
 194         truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 195
 196         if (rgd)
 197                 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
 198 }
 199
 200 static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl)
 201 {
 202         struct gfs2_inode *ip;
 203
 204         spin_lock(&gl->gl_lockref.lock);
 205         ip = gl->gl_object;
 206         if (ip)
 207                 set_bit(GIF_GLOP_PENDING, &ip->i_flags);
 208         spin_unlock(&gl->gl_lockref.lock);
 209         return ip;
 210 }
 211
 212 struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl)
 213 {
 214         struct gfs2_rgrpd *rgd;
 215
 216         spin_lock(&gl->gl_lockref.lock);
 217         rgd = gl->gl_object;
 218         spin_unlock(&gl->gl_lockref.lock);
 219
 220         return rgd;
 221 }
 222
 223 static void gfs2_clear_glop_pending(struct gfs2_inode *ip)
 224 {
 225         if (!ip)
 226                 return;
 227
 228         clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags);
 229         wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING);
 230 }
 231
 232 /**
 233  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 234  * @gl: the glock protecting the inode
 235  *
 236  */
 237
 238 static void inode_go_sync(struct gfs2_glock *gl)
 239 {
 240         struct gfs2_inode *ip = gfs2_glock2inode(gl);
 241         int isreg = ip && S_ISREG(ip->i_inode.i_mode);
 242         struct address_space *metamapping = gfs2_glock2aspace(gl);
 243         int error;
 244
 245         if (isreg) {
 246                 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
 247                         unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
 248                 inode_dio_wait(&ip->i_inode);
 249         }
 250         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 251                 goto out;
 252
 253         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 254
 255         gfs2_log_flush(gl->gl_name.ln_sbd, gl, NORMAL_FLUSH);
 256         filemap_fdatawrite(metamapping);
 257         if (isreg) {
 258                 struct address_space *mapping = ip->i_inode.i_mapping;
 259                 filemap_fdatawrite(mapping);
 260                 error = filemap_fdatawait(mapping);
 261                 mapping_set_error(mapping, error);
 262         }
 263         error = filemap_fdatawait(metamapping);
 264         mapping_set_error(metamapping, error);
 265         gfs2_ail_empty_gl(gl);
 266         /*
 267          * Writeback of the data mapping may cause the dirty flag to be set
 268          * so we have to clear it again here.
 269          */
 270         smp_mb__before_atomic();
 271         clear_bit(GLF_DIRTY, &gl->gl_flags);
 272
 273 out:
 274         gfs2_clear_glop_pending(ip);
 275 }
 276
 277 /**
 278  * inode_go_inval - prepare a inode glock to be released
 279  * @gl: the glock
 280  * @flags:
 281  *
 282  * Normally we invalidate everything, but if we are moving into
 283  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 284  * can keep hold of the metadata, since it won't have changed.
 285  *
 286  */
 287
 288 static void inode_go_inval(struct gfs2_glock *gl, int flags)
 289 {
 290         struct gfs2_inode *ip = gfs2_glock2inode(gl);
 291
 292         gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count));
 293
 294         if (flags & DIO_METADATA) {
 295                 struct address_space *mapping = gfs2_glock2aspace(gl);
 296                 truncate_inode_pages(mapping, 0);
 297                 if (ip) {
 298                         set_bit(GIF_INVALID, &ip->i_flags);
 299                         forget_all_cached_acls(&ip->i_inode);
 300                         security_inode_invalidate_secctx(&ip->i_inode);
 301                         gfs2_dir_hash_inval(ip);
 302                 }
 303         }
 304
 305         if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
 306                 gfs2_log_flush(gl->gl_name.ln_sbd, NULL, NORMAL_FLUSH);
 307                 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
 308         }
 309         if (ip && S_ISREG(ip->i_inode.i_mode))
 310                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
 311
 312         gfs2_clear_glop_pending(ip);
 313 }
 314
 315 /**
 316  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 317  * @gl: the glock
 318  *
 319  * Returns: 1 if it's ok
 320  */
 321
 322 static int inode_go_demote_ok(const struct gfs2_glock *gl)
 323 {
 324         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 325
 326         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
 327                 return 0;
 328
 329         return 1;
 330 }
 331
 332 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 333 {
 334         const struct gfs2_dinode *str = buf;
 335         struct timespec atime;
 336         u16 height, depth;
 337
 338         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
 339                 goto corrupt;
 340         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 341         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 342         ip->i_inode.i_rdev = 0;
 343         switch (ip->i_inode.i_mode & S_IFMT) {
 344         case S_IFBLK:
 345         case S_IFCHR:
 346                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
 347                                            be32_to_cpu(str->di_minor));
 348                 break;
 349         };
 350
 351         i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
 352         i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
 353         set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
 354         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
 355         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
 356         atime.tv_sec = be64_to_cpu(str->di_atime);
 357         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
 358         if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
 359                 ip->i_inode.i_atime = atime;
 360         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
 361         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
 362         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
 363         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 364
 365         ip->i_goal = be64_to_cpu(str->di_goal_meta);
 366         ip->i_generation = be64_to_cpu(str->di_generation);
 367
 368         ip->i_diskflags = be32_to_cpu(str->di_flags);
 369         ip->i_eattr = be64_to_cpu(str->di_eattr);
 370         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
 371         gfs2_set_inode_flags(&ip->i_inode);
 372         height = be16_to_cpu(str->di_height);
 373         if (unlikely(height > GFS2_MAX_META_HEIGHT))
 374                 goto corrupt;
 375         ip->i_height = (u8)height;
 376
 377         depth = be16_to_cpu(str->di_depth);
 378         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
 379                 goto corrupt;
 380         ip->i_depth = (u8)depth;
 381         ip->i_entries = be32_to_cpu(str->di_entries);
 382
 383         if (S_ISREG(ip->i_inode.i_mode))
 384                 gfs2_set_aops(&ip->i_inode);
 385
 386         return 0;
 387 corrupt:
 388         gfs2_consist_inode(ip);
 389         return -EIO;
 390 }
 391
 392 /**
 393  * gfs2_inode_refresh - Refresh the incore copy of the dinode
 394  * @ip: The GFS2 inode
 395  *
 396  * Returns: errno
 397  */
 398
 399 int gfs2_inode_refresh(struct gfs2_inode *ip)
 400 {
 401         struct buffer_head *dibh;
 402         int error;
 403
 404         error = gfs2_meta_inode_buffer(ip, &dibh);
 405         if (error)
 406                 return error;
 407
 408         error = gfs2_dinode_in(ip, dibh->b_data);
 409         brelse(dibh);
 410         clear_bit(GIF_INVALID, &ip->i_flags);
 411
 412         return error;
 413 }
 414
 415 /**
 416  * inode_go_lock - operation done after an inode lock is locked by a process
 417  * @gl: the glock
 418  * @flags:
 419  *
 420  * Returns: errno
 421  */
 422
 423 static int inode_go_lock(struct gfs2_holder *gh)
 424 {
 425         struct gfs2_glock *gl = gh->gh_gl;
 426         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 427         struct gfs2_inode *ip = gl->gl_object;
 428         int error = 0;
 429
 430         if (!ip || (gh->gh_flags & GL_SKIP))
 431                 return 0;
 432
 433         if (test_bit(GIF_INVALID, &ip->i_flags)) {
 434                 error = gfs2_inode_refresh(ip);
 435                 if (error)
 436                         return error;
 437         }
 438
 439         if (gh->gh_state != LM_ST_DEFERRED)
 440                 inode_dio_wait(&ip->i_inode);
 441
 442         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
 443             (gl->gl_state == LM_ST_EXCLUSIVE) &&
 444             (gh->gh_state == LM_ST_EXCLUSIVE)) {
 445                 spin_lock(&sdp->sd_trunc_lock);
 446                 if (list_empty(&ip->i_trunc_list))
 447                         list_add(&ip->i_trunc_list, &sdp->sd_trunc_list);
 448                 spin_unlock(&sdp->sd_trunc_lock);
 449                 wake_up(&sdp->sd_quota_wait);
 450                 return 1;
 451         }
 452
 453         return error;
 454 }
 455
 456 /**
 457  * inode_go_dump - print information about an inode
 458  * @seq: The iterator
 459  * @ip: the inode
 460  *
 461  */
 462
 463 static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
 464 {
 465         const struct gfs2_inode *ip = gl->gl_object;
 466         if (ip == NULL)
 467                 return;
 468         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
 469                   (unsigned long long)ip->i_no_formal_ino,
 470                   (unsigned long long)ip->i_no_addr,
 471                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
 472                   (unsigned int)ip->i_diskflags,
 473                   (unsigned long long)i_size_read(&ip->i_inode));
 474 }
 475
 476 /**
 477  * freeze_go_sync - promote/demote the freeze glock
 478  * @gl: the glock
 479  * @state: the requested state
 480  * @flags:
 481  *
 482  */
 483
 484 static void freeze_go_sync(struct gfs2_glock *gl)
 485 {
 486         int error = 0;
 487         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 488
 489         if (gl->gl_state == LM_ST_SHARED &&
 490             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 491                 atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
 492                 error = freeze_super(sdp->sd_vfs);
 493                 if (error) {
 494                         printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error);
 495                         gfs2_assert_withdraw(sdp, 0);
 496                 }
 497                 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
 498                 gfs2_log_flush(sdp, NULL, FREEZE_FLUSH);
 499         }
 500 }
 501
 502 /**
 503  * freeze_go_xmote_bh - After promoting/demoting the freeze glock
 504  * @gl: the glock
 505  *
 506  */
 507
 508 static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 509 {
 510         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 511         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 512         struct gfs2_glock *j_gl = ip->i_gl;
 513         struct gfs2_log_header_host head;
 514         int error;
 515
 516         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 517                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
 518
 519                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
 520                 if (error)
 521                         gfs2_consist(sdp);
 522                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
 523                         gfs2_consist(sdp);
 524
 525                 /*  Initialize some head of the log stuff  */
 526                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
 527                         sdp->sd_log_sequence = head.lh_sequence + 1;
 528                         gfs2_log_pointers_init(sdp, head.lh_blkno);
 529                 }
 530         }
 531         return 0;
 532 }
 533
 534 /**
 535  * trans_go_demote_ok
 536  * @gl: the glock
 537  *
 538  * Always returns 0
 539  */
 540
 541 static int freeze_go_demote_ok(const struct gfs2_glock *gl)
 542 {
 543         return 0;
 544 }
 545
 546 /**
 547  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 548  * @gl: the glock
 549  *
 550  * gl_lockref.lock lock is held while calling this
 551  */
 552 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
 553 {
 554         struct gfs2_inode *ip = gl->gl_object;
 555         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 556
 557         if (!remote || sb_rdonly(sdp->sd_vfs))
 558                 return;
 559
 560         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 561             gl->gl_state == LM_ST_SHARED && ip) {
 562                 gl->gl_lockref.count++;
 563                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
 564                         gl->gl_lockref.count--;
 565         }
 566 }
 567
 568 const struct gfs2_glock_operations gfs2_meta_glops = {
 569         .go_type = LM_TYPE_META,
 570 };
 571
 572 const struct gfs2_glock_operations gfs2_inode_glops = {
 573         .go_sync = inode_go_sync,
 574         .go_inval = inode_go_inval,
 575         .go_demote_ok = inode_go_demote_ok,
 576         .go_lock = inode_go_lock,
 577         .go_dump = inode_go_dump,
 578         .go_type = LM_TYPE_INODE,
 579         .go_flags = GLOF_ASPACE | GLOF_LRU,
 580 };
 581
 582 const struct gfs2_glock_operations gfs2_rgrp_glops = {
 583         .go_sync = rgrp_go_sync,
 584         .go_inval = rgrp_go_inval,
 585         .go_lock = gfs2_rgrp_go_lock,
 586         .go_unlock = gfs2_rgrp_go_unlock,
 587         .go_dump = gfs2_rgrp_dump,
 588         .go_type = LM_TYPE_RGRP,
 589         .go_flags = GLOF_LVB,
 590 };
 591
 592 const struct gfs2_glock_operations gfs2_freeze_glops = {
 593         .go_sync = freeze_go_sync,
 594         .go_xmote_bh = freeze_go_xmote_bh,
 595         .go_demote_ok = freeze_go_demote_ok,
 596         .go_type = LM_TYPE_NONDISK,
 597 };
 598
 599 const struct gfs2_glock_operations gfs2_iopen_glops = {
 600         .go_type = LM_TYPE_IOPEN,
 601         .go_callback = iopen_go_callback,
 602         .go_flags = GLOF_LRU,
 603 };
 604
 605 const struct gfs2_glock_operations gfs2_flock_glops = {
 606         .go_type = LM_TYPE_FLOCK,
 607         .go_flags = GLOF_LRU,
 608 };
 609
 610 const struct gfs2_glock_operations gfs2_nondisk_glops = {
 611         .go_type = LM_TYPE_NONDISK,
 612 };
 613
 614 const struct gfs2_glock_operations gfs2_quota_glops = {
 615         .go_type = LM_TYPE_QUOTA,
 616         .go_flags = GLOF_LVB | GLOF_LRU,
 617 };
 618
 619 const struct gfs2_glock_operations gfs2_journal_glops = {
 620         .go_type = LM_TYPE_JOURNAL,
 621 };
 622
 623 const struct gfs2_glock_operations *gfs2_glops_list[] = {
 624         [LM_TYPE_META] = &gfs2_meta_glops,
 625         [LM_TYPE_INODE] = &gfs2_inode_glops,
 626         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
 627         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
 628         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
 629         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
 630         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
 631         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
 632 };
 633