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  * not 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 = gl->gl_object;
 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 /**
 201  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 202  * @gl: the glock protecting the inode
 203  *
 204  */
 205
 206 static void inode_go_sync(struct gfs2_glock *gl)
 207 {
 208         struct gfs2_inode *ip = gl->gl_object;
 209         struct address_space *metamapping = gfs2_glock2aspace(gl);
 210         int error;
 211
 212         if (ip && !S_ISREG(ip->i_inode.i_mode))
 213                 ip = NULL;
 214         if (ip) {
 215                 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
 216                         unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
 217                 inode_dio_wait(&ip->i_inode);
 218         }
 219         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 220                 return;
 221
 222         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 223
 224         gfs2_log_flush(gl->gl_name.ln_sbd, gl, NORMAL_FLUSH);
 225         filemap_fdatawrite(metamapping);
 226         if (ip) {
 227                 struct address_space *mapping = ip->i_inode.i_mapping;
 228                 filemap_fdatawrite(mapping);
 229                 error = filemap_fdatawait(mapping);
 230                 mapping_set_error(mapping, error);
 231         }
 232         error = filemap_fdatawait(metamapping);
 233         mapping_set_error(metamapping, error);
 234         gfs2_ail_empty_gl(gl);
 235         /*
 236          * Writeback of the data mapping may cause the dirty flag to be set
 237          * so we have to clear it again here.
 238          */
 239         smp_mb__before_atomic();
 240         clear_bit(GLF_DIRTY, &gl->gl_flags);
 241 }
 242
 243 /**
 244  * inode_go_inval - prepare a inode glock to be released
 245  * @gl: the glock
 246  * @flags:
 247  *
 248  * Normally we invalidate everything, but if we are moving into
 249  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 250  * can keep hold of the metadata, since it won't have changed.
 251  *
 252  */
 253
 254 static void inode_go_inval(struct gfs2_glock *gl, int flags)
 255 {
 256         struct gfs2_inode *ip = gl->gl_object;
 257
 258         gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count));
 259
 260         if (flags & DIO_METADATA) {
 261                 struct address_space *mapping = gfs2_glock2aspace(gl);
 262                 truncate_inode_pages(mapping, 0);
 263                 if (ip) {
 264                         set_bit(GIF_INVALID, &ip->i_flags);
 265                         forget_all_cached_acls(&ip->i_inode);
 266                         security_inode_invalidate_secctx(&ip->i_inode);
 267                         gfs2_dir_hash_inval(ip);
 268                 }
 269         }
 270
 271         if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
 272                 gfs2_log_flush(gl->gl_name.ln_sbd, NULL, NORMAL_FLUSH);
 273                 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
 274         }
 275         if (ip && S_ISREG(ip->i_inode.i_mode))
 276                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
 277 }
 278
 279 /**
 280  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 281  * @gl: the glock
 282  *
 283  * Returns: 1 if it's ok
 284  */
 285
 286 static int inode_go_demote_ok(const struct gfs2_glock *gl)
 287 {
 288         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 289         struct gfs2_holder *gh;
 290
 291         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
 292                 return 0;
 293
 294         if (!list_empty(&gl->gl_holders)) {
 295                 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
 296                 if (gh->gh_list.next != &gl->gl_holders)
 297                         return 0;
 298         }
 299
 300         return 1;
 301 }
 302
 303 /**
 304  * gfs2_set_nlink - Set the inode's link count based on on-disk info
 305  * @inode: The inode in question
 306  * @nlink: The link count
 307  *
 308  * If the link count has hit zero, it must never be raised, whatever the
 309  * on-disk inode might say. When new struct inodes are created the link
 310  * count is set to 1, so that we can safely use this test even when reading
 311  * in on disk information for the first time.
 312  */
 313
 314 static void gfs2_set_nlink(struct inode *inode, u32 nlink)
 315 {
 316         /*
 317          * We will need to review setting the nlink count here in the
 318          * light of the forthcoming ro bind mount work. This is a reminder
 319          * to do that.
 320          */
 321         if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
 322                 if (nlink == 0)
 323                         clear_nlink(inode);
 324                 else
 325                         set_nlink(inode, nlink);
 326         }
 327 }
 328
 329 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 330 {
 331         const struct gfs2_dinode *str = buf;
 332         struct timespec atime;
 333         u16 height, depth;
 334
 335         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
 336                 goto corrupt;
 337         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 338         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 339         ip->i_inode.i_rdev = 0;
 340         switch (ip->i_inode.i_mode & S_IFMT) {
 341         case S_IFBLK:
 342         case S_IFCHR:
 343                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
 344                                            be32_to_cpu(str->di_minor));
 345                 break;
 346         };
 347
 348         i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
 349         i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
 350         gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
 351         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
 352         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
 353         atime.tv_sec = be64_to_cpu(str->di_atime);
 354         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
 355         if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
 356                 ip->i_inode.i_atime = atime;
 357         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
 358         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
 359         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
 360         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 361
 362         ip->i_goal = be64_to_cpu(str->di_goal_meta);
 363         ip->i_generation = be64_to_cpu(str->di_generation);
 364
 365         ip->i_diskflags = be32_to_cpu(str->di_flags);
 366         ip->i_eattr = be64_to_cpu(str->di_eattr);
 367         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
 368         gfs2_set_inode_flags(&ip->i_inode);
 369         height = be16_to_cpu(str->di_height);
 370         if (unlikely(height > GFS2_MAX_META_HEIGHT))
 371                 goto corrupt;
 372         ip->i_height = (u8)height;
 373
 374         depth = be16_to_cpu(str->di_depth);
 375         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
 376                 goto corrupt;
 377         ip->i_depth = (u8)depth;
 378         ip->i_entries = be32_to_cpu(str->di_entries);
 379
 380         if (S_ISREG(ip->i_inode.i_mode))
 381                 gfs2_set_aops(&ip->i_inode);
 382
 383         return 0;
 384 corrupt:
 385         gfs2_consist_inode(ip);
 386         return -EIO;
 387 }
 388
 389 /**
 390  * gfs2_inode_refresh - Refresh the incore copy of the dinode
 391  * @ip: The GFS2 inode
 392  *
 393  * Returns: errno
 394  */
 395
 396 int gfs2_inode_refresh(struct gfs2_inode *ip)
 397 {
 398         struct buffer_head *dibh;
 399         int error;
 400
 401         error = gfs2_meta_inode_buffer(ip, &dibh);
 402         if (error)
 403                 return error;
 404
 405         error = gfs2_dinode_in(ip, dibh->b_data);
 406         brelse(dibh);
 407         clear_bit(GIF_INVALID, &ip->i_flags);
 408
 409         return error;
 410 }
 411
 412 /**
 413  * inode_go_lock - operation done after an inode lock is locked by a process
 414  * @gl: the glock
 415  * @flags:
 416  *
 417  * Returns: errno
 418  */
 419
 420 static int inode_go_lock(struct gfs2_holder *gh)
 421 {
 422         struct gfs2_glock *gl = gh->gh_gl;
 423         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 424         struct gfs2_inode *ip = gl->gl_object;
 425         int error = 0;
 426
 427         if (!ip || (gh->gh_flags & GL_SKIP))
 428                 return 0;
 429
 430         if (test_bit(GIF_INVALID, &ip->i_flags)) {
 431                 error = gfs2_inode_refresh(ip);
 432                 if (error)
 433                         return error;
 434         }
 435
 436         if (gh->gh_state != LM_ST_DEFERRED)
 437                 inode_dio_wait(&ip->i_inode);
 438
 439         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
 440             (gl->gl_state == LM_ST_EXCLUSIVE) &&
 441             (gh->gh_state == LM_ST_EXCLUSIVE)) {
 442                 spin_lock(&sdp->sd_trunc_lock);
 443                 if (list_empty(&ip->i_trunc_list))
 444                         list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
 445                 spin_unlock(&sdp->sd_trunc_lock);
 446                 wake_up(&sdp->sd_quota_wait);
 447                 return 1;
 448         }
 449
 450         return error;
 451 }
 452
 453 /**
 454  * inode_go_dump - print information about an inode
 455  * @seq: The iterator
 456  * @ip: the inode
 457  *
 458  */
 459
 460 static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
 461 {
 462         const struct gfs2_inode *ip = gl->gl_object;
 463         if (ip == NULL)
 464                 return;
 465         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
 466                   (unsigned long long)ip->i_no_formal_ino,
 467                   (unsigned long long)ip->i_no_addr,
 468                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
 469                   (unsigned int)ip->i_diskflags,
 470                   (unsigned long long)i_size_read(&ip->i_inode));
 471 }
 472
 473 /**
 474  * freeze_go_sync - promote/demote the freeze glock
 475  * @gl: the glock
 476  * @state: the requested state
 477  * @flags:
 478  *
 479  */
 480
 481 static void freeze_go_sync(struct gfs2_glock *gl)
 482 {
 483         int error = 0;
 484         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 485
 486         if (gl->gl_state == LM_ST_SHARED &&
 487             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 488                 atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
 489                 error = freeze_super(sdp->sd_vfs);
 490                 if (error) {
 491                         printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error);
 492                         gfs2_assert_withdraw(sdp, 0);
 493                 }
 494                 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
 495                 gfs2_log_flush(sdp, NULL, FREEZE_FLUSH);
 496         }
 497 }
 498
 499 /**
 500  * freeze_go_xmote_bh - After promoting/demoting the freeze glock
 501  * @gl: the glock
 502  *
 503  */
 504
 505 static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 506 {
 507         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 508         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 509         struct gfs2_glock *j_gl = ip->i_gl;
 510         struct gfs2_log_header_host head;
 511         int error;
 512
 513         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 514                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
 515
 516                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
 517                 if (error)
 518                         gfs2_consist(sdp);
 519                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
 520                         gfs2_consist(sdp);
 521
 522                 /*  Initialize some head of the log stuff  */
 523                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
 524                         sdp->sd_log_sequence = head.lh_sequence + 1;
 525                         gfs2_log_pointers_init(sdp, head.lh_blkno);
 526                 }
 527         }
 528         return 0;
 529 }
 530
 531 /**
 532  * trans_go_demote_ok
 533  * @gl: the glock
 534  *
 535  * Always returns 0
 536  */
 537
 538 static int freeze_go_demote_ok(const struct gfs2_glock *gl)
 539 {
 540         return 0;
 541 }
 542
 543 /**
 544  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 545  * @gl: the glock
 546  *
 547  * gl_lockref.lock lock is held while calling this
 548  */
 549 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
 550 {
 551         struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
 552         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 553
 554         if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY))
 555                 return;
 556
 557         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 558             gl->gl_state == LM_ST_SHARED && ip) {
 559                 gl->gl_lockref.count++;
 560                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
 561                         gl->gl_lockref.count--;
 562         }
 563 }
 564
 565 const struct gfs2_glock_operations gfs2_meta_glops = {
 566         .go_type = LM_TYPE_META,
 567 };
 568
 569 const struct gfs2_glock_operations gfs2_inode_glops = {
 570         .go_sync = inode_go_sync,
 571         .go_inval = inode_go_inval,
 572         .go_demote_ok = inode_go_demote_ok,
 573         .go_lock = inode_go_lock,
 574         .go_dump = inode_go_dump,
 575         .go_type = LM_TYPE_INODE,
 576         .go_flags = GLOF_ASPACE | GLOF_LRU,
 577 };
 578
 579 const struct gfs2_glock_operations gfs2_rgrp_glops = {
 580         .go_sync = rgrp_go_sync,
 581         .go_inval = rgrp_go_inval,
 582         .go_lock = gfs2_rgrp_go_lock,
 583         .go_unlock = gfs2_rgrp_go_unlock,
 584         .go_dump = gfs2_rgrp_dump,
 585         .go_type = LM_TYPE_RGRP,
 586         .go_flags = GLOF_LVB,
 587 };
 588
 589 const struct gfs2_glock_operations gfs2_freeze_glops = {
 590         .go_sync = freeze_go_sync,
 591         .go_xmote_bh = freeze_go_xmote_bh,
 592         .go_demote_ok = freeze_go_demote_ok,
 593         .go_type = LM_TYPE_NONDISK,
 594 };
 595
 596 const struct gfs2_glock_operations gfs2_iopen_glops = {
 597         .go_type = LM_TYPE_IOPEN,
 598         .go_callback = iopen_go_callback,
 599         .go_flags = GLOF_LRU,
 600 };
 601
 602 const struct gfs2_glock_operations gfs2_flock_glops = {
 603         .go_type = LM_TYPE_FLOCK,
 604         .go_flags = GLOF_LRU,
 605 };
 606
 607 const struct gfs2_glock_operations gfs2_nondisk_glops = {
 608         .go_type = LM_TYPE_NONDISK,
 609 };
 610
 611 const struct gfs2_glock_operations gfs2_quota_glops = {
 612         .go_type = LM_TYPE_QUOTA,
 613         .go_flags = GLOF_LVB | GLOF_LRU,
 614 };
 615
 616 const struct gfs2_glock_operations gfs2_journal_glops = {
 617         .go_type = LM_TYPE_JOURNAL,
 618 };
 619
 620 const struct gfs2_glock_operations *gfs2_glops_list[] = {
 621         [LM_TYPE_META] = &gfs2_meta_glops,
 622         [LM_TYPE_INODE] = &gfs2_inode_glops,
 623         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
 624         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
 625         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
 626         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
 627         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
 628         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
 629 };
 630