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
  17 #include "gfs2.h"
  18 #include "incore.h"
  19 #include "bmap.h"
  20 #include "glock.h"
  21 #include "glops.h"
  22 #include "inode.h"
  23 #include "log.h"
  24 #include "meta_io.h"
  25 #include "recovery.h"
  26 #include "rgrp.h"
  27 #include "util.h"
  28 #include "trans.h"
  29 #include "dir.h"
  30
  31 struct workqueue_struct *gfs2_freeze_wq;
  32
  33 static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
  34 {
  35         fs_err(gl->gl_name.ln_sbd,
  36                "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page "
  37                "state 0x%lx\n",
  38                bh, (unsigned long long)bh->b_blocknr, bh->b_state,
  39                bh->b_page->mapping, bh->b_page->flags);
  40         fs_err(gl->gl_name.ln_sbd, "AIL glock %u:%llu mapping %p\n",
  41                gl->gl_name.ln_type, gl->gl_name.ln_number,
  42                gfs2_glock2aspace(gl));
  43         gfs2_lm_withdraw(gl->gl_name.ln_sbd, "AIL error\n");
  44 }
  45
  46 /**
  47  * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
  48  * @gl: the glock
  49  * @fsync: set when called from fsync (not all buffers will be clean)
  50  *
  51  * None of the buffers should be dirty, locked, or pinned.
  52  */
  53
  54 static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
  55                              unsigned int nr_revokes)
  56 {
  57         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
  58         struct list_head *head = &gl->gl_ail_list;
  59         struct gfs2_bufdata *bd, *tmp;
  60         struct buffer_head *bh;
  61         const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
  62
  63         gfs2_log_lock(sdp);
  64         spin_lock(&sdp->sd_ail_lock);
  65         list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
  66                 if (nr_revokes == 0)
  67                         break;
  68                 bh = bd->bd_bh;
  69                 if (bh->b_state & b_state) {
  70                         if (fsync)
  71                                 continue;
  72                         gfs2_ail_error(gl, bh);
  73                 }
  74                 gfs2_trans_add_revoke(sdp, bd);
  75                 nr_revokes--;
  76         }
  77         GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
  78         spin_unlock(&sdp->sd_ail_lock);
  79         gfs2_log_unlock(sdp);
  80 }
  81
  82
  83 static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
  84 {
  85         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
  86         struct gfs2_trans tr;
  87
  88         memset(&tr, 0, sizeof(tr));
  89         INIT_LIST_HEAD(&tr.tr_buf);
  90         INIT_LIST_HEAD(&tr.tr_databuf);
  91         tr.tr_revokes = atomic_read(&gl->gl_ail_count);
  92
  93         if (!tr.tr_revokes)
  94                 return;
  95
  96         /* A shortened, inline version of gfs2_trans_begin()
  97          * tr->alloced is not set since the transaction structure is
  98          * on the stack */
  99         tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
 100         tr.tr_ip = _RET_IP_;
 101         if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0)
 102                 return;
 103         WARN_ON_ONCE(current->journal_info);
 104         current->journal_info = &tr;
 105
 106         __gfs2_ail_flush(gl, 0, tr.tr_revokes);
 107
 108         gfs2_trans_end(sdp);
 109         gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
 110 }
 111
 112 void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
 113 {
 114         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 115         unsigned int revokes = atomic_read(&gl->gl_ail_count);
 116         unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64);
 117         int ret;
 118
 119         if (!revokes)
 120                 return;
 121
 122         while (revokes > max_revokes)
 123                 max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64);
 124
 125         ret = gfs2_trans_begin(sdp, 0, max_revokes);
 126         if (ret)
 127                 return;
 128         __gfs2_ail_flush(gl, fsync, max_revokes);
 129         gfs2_trans_end(sdp);
 130         gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
 131 }
 132
 133 /**
 134  * rgrp_go_sync - sync out the metadata for this glock
 135  * @gl: the glock
 136  *
 137  * Called when demoting or unlocking an EX glock.  We must flush
 138  * to disk all dirty buffers/pages relating to this glock, and must not
 139  * not return to caller to demote/unlock the glock until I/O is complete.
 140  */
 141
 142 static void rgrp_go_sync(struct gfs2_glock *gl)
 143 {
 144         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 145         struct address_space *mapping = &sdp->sd_aspace;
 146         struct gfs2_rgrpd *rgd;
 147         int error;
 148
 149         spin_lock(&gl->gl_lockref.lock);
 150         rgd = gl->gl_object;
 151         if (rgd)
 152                 gfs2_rgrp_brelse(rgd);
 153         spin_unlock(&gl->gl_lockref.lock);
 154
 155         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 156                 return;
 157         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 158
 159         gfs2_log_flush(sdp, gl, NORMAL_FLUSH);
 160         filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 161         error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 162         mapping_set_error(mapping, error);
 163         gfs2_ail_empty_gl(gl);
 164
 165         spin_lock(&gl->gl_lockref.lock);
 166         rgd = gl->gl_object;
 167         if (rgd)
 168                 gfs2_free_clones(rgd);
 169         spin_unlock(&gl->gl_lockref.lock);
 170 }
 171
 172 /**
 173  * rgrp_go_inval - invalidate the metadata for this glock
 174  * @gl: the glock
 175  * @flags:
 176  *
 177  * We never used LM_ST_DEFERRED with resource groups, so that we
 178  * should always see the metadata flag set here.
 179  *
 180  */
 181
 182 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
 183 {
 184         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 185         struct address_space *mapping = &sdp->sd_aspace;
 186         struct gfs2_rgrpd *rgd = gl->gl_object;
 187
 188         if (rgd)
 189                 gfs2_rgrp_brelse(rgd);
 190
 191         WARN_ON_ONCE(!(flags & DIO_METADATA));
 192         gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
 193         truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 194
 195         if (rgd)
 196                 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
 197 }
 198
 199 /**
 200  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 201  * @gl: the glock protecting the inode
 202  *
 203  */
 204
 205 static void inode_go_sync(struct gfs2_glock *gl)
 206 {
 207         struct gfs2_inode *ip = gl->gl_object;
 208         struct address_space *metamapping = gfs2_glock2aspace(gl);
 209         int error;
 210
 211         if (ip && !S_ISREG(ip->i_inode.i_mode))
 212                 ip = NULL;
 213         if (ip) {
 214                 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
 215                         unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
 216                 inode_dio_wait(&ip->i_inode);
 217         }
 218         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 219                 return;
 220
 221         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 222
 223         gfs2_log_flush(gl->gl_name.ln_sbd, gl, NORMAL_FLUSH);
 224         filemap_fdatawrite(metamapping);
 225         if (ip) {
 226                 struct address_space *mapping = ip->i_inode.i_mapping;
 227                 filemap_fdatawrite(mapping);
 228                 error = filemap_fdatawait(mapping);
 229                 mapping_set_error(mapping, error);
 230         }
 231         error = filemap_fdatawait(metamapping);
 232         mapping_set_error(metamapping, error);
 233         gfs2_ail_empty_gl(gl);
 234         /*
 235          * Writeback of the data mapping may cause the dirty flag to be set
 236          * so we have to clear it again here.
 237          */
 238         smp_mb__before_atomic();
 239         clear_bit(GLF_DIRTY, &gl->gl_flags);
 240 }
 241
 242 /**
 243  * inode_go_inval - prepare a inode glock to be released
 244  * @gl: the glock
 245  * @flags:
 246  *
 247  * Normally we invalidate everything, but if we are moving into
 248  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 249  * can keep hold of the metadata, since it won't have changed.
 250  *
 251  */
 252
 253 static void inode_go_inval(struct gfs2_glock *gl, int flags)
 254 {
 255         struct gfs2_inode *ip = gl->gl_object;
 256
 257         gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count));
 258
 259         if (flags & DIO_METADATA) {
 260                 struct address_space *mapping = gfs2_glock2aspace(gl);
 261                 truncate_inode_pages(mapping, 0);
 262                 if (ip) {
 263                         set_bit(GIF_INVALID, &ip->i_flags);
 264                         forget_all_cached_acls(&ip->i_inode);
 265                         gfs2_dir_hash_inval(ip);
 266                 }
 267         }
 268
 269         if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
 270                 gfs2_log_flush(gl->gl_name.ln_sbd, NULL, NORMAL_FLUSH);
 271                 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
 272         }
 273         if (ip && S_ISREG(ip->i_inode.i_mode))
 274                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
 275 }
 276
 277 /**
 278  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 279  * @gl: the glock
 280  *
 281  * Returns: 1 if it's ok
 282  */
 283
 284 static int inode_go_demote_ok(const struct gfs2_glock *gl)
 285 {
 286         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 287         struct gfs2_holder *gh;
 288
 289         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
 290                 return 0;
 291
 292         if (!list_empty(&gl->gl_holders)) {
 293                 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
 294                 if (gh->gh_list.next != &gl->gl_holders)
 295                         return 0;
 296         }
 297
 298         return 1;
 299 }
 300
 301 /**
 302  * gfs2_set_nlink - Set the inode's link count based on on-disk info
 303  * @inode: The inode in question
 304  * @nlink: The link count
 305  *
 306  * If the link count has hit zero, it must never be raised, whatever the
 307  * on-disk inode might say. When new struct inodes are created the link
 308  * count is set to 1, so that we can safely use this test even when reading
 309  * in on disk information for the first time.
 310  */
 311
 312 static void gfs2_set_nlink(struct inode *inode, u32 nlink)
 313 {
 314         /*
 315          * We will need to review setting the nlink count here in the
 316          * light of the forthcoming ro bind mount work. This is a reminder
 317          * to do that.
 318          */
 319         if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
 320                 if (nlink == 0)
 321                         clear_nlink(inode);
 322                 else
 323                         set_nlink(inode, nlink);
 324         }
 325 }
 326
 327 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 328 {
 329         const struct gfs2_dinode *str = buf;
 330         struct timespec atime;
 331         u16 height, depth;
 332
 333         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
 334                 goto corrupt;
 335         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 336         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 337         ip->i_inode.i_rdev = 0;
 338         switch (ip->i_inode.i_mode & S_IFMT) {
 339         case S_IFBLK:
 340         case S_IFCHR:
 341                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
 342                                            be32_to_cpu(str->di_minor));
 343                 break;
 344         };
 345
 346         i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
 347         i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
 348         gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
 349         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
 350         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
 351         atime.tv_sec = be64_to_cpu(str->di_atime);
 352         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
 353         if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
 354                 ip->i_inode.i_atime = atime;
 355         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
 356         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
 357         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
 358         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 359
 360         ip->i_goal = be64_to_cpu(str->di_goal_meta);
 361         ip->i_generation = be64_to_cpu(str->di_generation);
 362
 363         ip->i_diskflags = be32_to_cpu(str->di_flags);
 364         ip->i_eattr = be64_to_cpu(str->di_eattr);
 365         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
 366         gfs2_set_inode_flags(&ip->i_inode);
 367         height = be16_to_cpu(str->di_height);
 368         if (unlikely(height > GFS2_MAX_META_HEIGHT))
 369                 goto corrupt;
 370         ip->i_height = (u8)height;
 371
 372         depth = be16_to_cpu(str->di_depth);
 373         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
 374                 goto corrupt;
 375         ip->i_depth = (u8)depth;
 376         ip->i_entries = be32_to_cpu(str->di_entries);
 377
 378         if (S_ISREG(ip->i_inode.i_mode))
 379                 gfs2_set_aops(&ip->i_inode);
 380
 381         return 0;
 382 corrupt:
 383         gfs2_consist_inode(ip);
 384         return -EIO;
 385 }
 386
 387 /**
 388  * gfs2_inode_refresh - Refresh the incore copy of the dinode
 389  * @ip: The GFS2 inode
 390  *
 391  * Returns: errno
 392  */
 393
 394 int gfs2_inode_refresh(struct gfs2_inode *ip)
 395 {
 396         struct buffer_head *dibh;
 397         int error;
 398
 399         error = gfs2_meta_inode_buffer(ip, &dibh);
 400         if (error)
 401                 return error;
 402
 403         error = gfs2_dinode_in(ip, dibh->b_data);
 404         brelse(dibh);
 405         clear_bit(GIF_INVALID, &ip->i_flags);
 406
 407         return error;
 408 }
 409
 410 /**
 411  * inode_go_lock - operation done after an inode lock is locked by a process
 412  * @gl: the glock
 413  * @flags:
 414  *
 415  * Returns: errno
 416  */
 417
 418 static int inode_go_lock(struct gfs2_holder *gh)
 419 {
 420         struct gfs2_glock *gl = gh->gh_gl;
 421         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 422         struct gfs2_inode *ip = gl->gl_object;
 423         int error = 0;
 424
 425         if (!ip || (gh->gh_flags & GL_SKIP))
 426                 return 0;
 427
 428         if (test_bit(GIF_INVALID, &ip->i_flags)) {
 429                 error = gfs2_inode_refresh(ip);
 430                 if (error)
 431                         return error;
 432         }
 433
 434         if (gh->gh_state != LM_ST_DEFERRED)
 435                 inode_dio_wait(&ip->i_inode);
 436
 437         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
 438             (gl->gl_state == LM_ST_EXCLUSIVE) &&
 439             (gh->gh_state == LM_ST_EXCLUSIVE)) {
 440                 spin_lock(&sdp->sd_trunc_lock);
 441                 if (list_empty(&ip->i_trunc_list))
 442                         list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
 443                 spin_unlock(&sdp->sd_trunc_lock);
 444                 wake_up(&sdp->sd_quota_wait);
 445                 return 1;
 446         }
 447
 448         return error;
 449 }
 450
 451 /**
 452  * inode_go_dump - print information about an inode
 453  * @seq: The iterator
 454  * @ip: the inode
 455  *
 456  */
 457
 458 static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
 459 {
 460         const struct gfs2_inode *ip = gl->gl_object;
 461         if (ip == NULL)
 462                 return;
 463         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
 464                   (unsigned long long)ip->i_no_formal_ino,
 465                   (unsigned long long)ip->i_no_addr,
 466                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
 467                   (unsigned int)ip->i_diskflags,
 468                   (unsigned long long)i_size_read(&ip->i_inode));
 469 }
 470
 471 /**
 472  * freeze_go_sync - promote/demote the freeze glock
 473  * @gl: the glock
 474  * @state: the requested state
 475  * @flags:
 476  *
 477  */
 478
 479 static void freeze_go_sync(struct gfs2_glock *gl)
 480 {
 481         int error = 0;
 482         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 483
 484         if (gl->gl_state == LM_ST_SHARED &&
 485             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 486                 atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
 487                 error = freeze_super(sdp->sd_vfs);
 488                 if (error) {
 489                         printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error);
 490                         gfs2_assert_withdraw(sdp, 0);
 491                 }
 492                 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
 493                 gfs2_log_flush(sdp, NULL, FREEZE_FLUSH);
 494         }
 495 }
 496
 497 /**
 498  * freeze_go_xmote_bh - After promoting/demoting the freeze glock
 499  * @gl: the glock
 500  *
 501  */
 502
 503 static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 504 {
 505         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 506         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 507         struct gfs2_glock *j_gl = ip->i_gl;
 508         struct gfs2_log_header_host head;
 509         int error;
 510
 511         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 512                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
 513
 514                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
 515                 if (error)
 516                         gfs2_consist(sdp);
 517                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
 518                         gfs2_consist(sdp);
 519
 520                 /*  Initialize some head of the log stuff  */
 521                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
 522                         sdp->sd_log_sequence = head.lh_sequence + 1;
 523                         gfs2_log_pointers_init(sdp, head.lh_blkno);
 524                 }
 525         }
 526         return 0;
 527 }
 528
 529 /**
 530  * trans_go_demote_ok
 531  * @gl: the glock
 532  *
 533  * Always returns 0
 534  */
 535
 536 static int freeze_go_demote_ok(const struct gfs2_glock *gl)
 537 {
 538         return 0;
 539 }
 540
 541 /**
 542  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 543  * @gl: the glock
 544  *
 545  * gl_lockref.lock lock is held while calling this
 546  */
 547 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
 548 {
 549         struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
 550         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 551
 552         if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY))
 553                 return;
 554
 555         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 556             gl->gl_state == LM_ST_SHARED && ip) {
 557                 gl->gl_lockref.count++;
 558                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
 559                         gl->gl_lockref.count--;
 560         }
 561 }
 562
 563 const struct gfs2_glock_operations gfs2_meta_glops = {
 564         .go_type = LM_TYPE_META,
 565 };
 566
 567 const struct gfs2_glock_operations gfs2_inode_glops = {
 568         .go_sync = inode_go_sync,
 569         .go_inval = inode_go_inval,
 570         .go_demote_ok = inode_go_demote_ok,
 571         .go_lock = inode_go_lock,
 572         .go_dump = inode_go_dump,
 573         .go_type = LM_TYPE_INODE,
 574         .go_flags = GLOF_ASPACE | GLOF_LRU,
 575 };
 576
 577 const struct gfs2_glock_operations gfs2_rgrp_glops = {
 578         .go_sync = rgrp_go_sync,
 579         .go_inval = rgrp_go_inval,
 580         .go_lock = gfs2_rgrp_go_lock,
 581         .go_unlock = gfs2_rgrp_go_unlock,
 582         .go_dump = gfs2_rgrp_dump,
 583         .go_type = LM_TYPE_RGRP,
 584         .go_flags = GLOF_LVB,
 585 };
 586
 587 const struct gfs2_glock_operations gfs2_freeze_glops = {
 588         .go_sync = freeze_go_sync,
 589         .go_xmote_bh = freeze_go_xmote_bh,
 590         .go_demote_ok = freeze_go_demote_ok,
 591         .go_type = LM_TYPE_NONDISK,
 592 };
 593
 594 const struct gfs2_glock_operations gfs2_iopen_glops = {
 595         .go_type = LM_TYPE_IOPEN,
 596         .go_callback = iopen_go_callback,
 597         .go_flags = GLOF_LRU,
 598 };
 599
 600 const struct gfs2_glock_operations gfs2_flock_glops = {
 601         .go_type = LM_TYPE_FLOCK,
 602         .go_flags = GLOF_LRU,
 603 };
 604
 605 const struct gfs2_glock_operations gfs2_nondisk_glops = {
 606         .go_type = LM_TYPE_NONDISK,
 607 };
 608
 609 const struct gfs2_glock_operations gfs2_quota_glops = {
 610         .go_type = LM_TYPE_QUOTA,
 611         .go_flags = GLOF_LVB | GLOF_LRU,
 612 };
 613
 614 const struct gfs2_glock_operations gfs2_journal_glops = {
 615         .go_type = LM_TYPE_JOURNAL,
 616 };
 617
 618 const struct gfs2_glock_operations *gfs2_glops_list[] = {
 619         [LM_TYPE_META] = &gfs2_meta_glops,
 620         [LM_TYPE_INODE] = &gfs2_inode_glops,
 621         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
 622         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
 623         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
 624         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
 625         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
 626         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
 627 };
 628