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 static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
  32 {
  33         fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n",
  34                bh, (unsigned long long)bh->b_blocknr, bh->b_state,
  35                bh->b_page->mapping, bh->b_page->flags);
  36         fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n",
  37                gl->gl_name.ln_type, gl->gl_name.ln_number,
  38                gfs2_glock2aspace(gl));
  39         gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n");
  40 }
  41
  42 /**
  43  * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
  44  * @gl: the glock
  45  * @fsync: set when called from fsync (not all buffers will be clean)
  46  *
  47  * None of the buffers should be dirty, locked, or pinned.
  48  */
  49
  50 static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
  51                              unsigned int nr_revokes)
  52 {
  53         struct gfs2_sbd *sdp = gl->gl_sbd;
  54         struct list_head *head = &gl->gl_ail_list;
  55         struct gfs2_bufdata *bd, *tmp;
  56         struct buffer_head *bh;
  57         const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
  58
  59         gfs2_log_lock(sdp);
  60         spin_lock(&sdp->sd_ail_lock);
  61         list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
  62                 if (nr_revokes == 0)
  63                         break;
  64                 bh = bd->bd_bh;
  65                 if (bh->b_state & b_state) {
  66                         if (fsync)
  67                                 continue;
  68                         gfs2_ail_error(gl, bh);
  69                 }
  70                 gfs2_trans_add_revoke(sdp, bd);
  71                 nr_revokes--;
  72         }
  73         GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
  74         spin_unlock(&sdp->sd_ail_lock);
  75         gfs2_log_unlock(sdp);
  76 }
  77
  78
  79 static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
  80 {
  81         struct gfs2_sbd *sdp = gl->gl_sbd;
  82         struct gfs2_trans tr;
  83
  84         memset(&tr, 0, sizeof(tr));
  85         tr.tr_revokes = atomic_read(&gl->gl_ail_count);
  86
  87         if (!tr.tr_revokes)
  88                 return;
  89
  90         /* A shortened, inline version of gfs2_trans_begin() */
  91         tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
  92         tr.tr_ip = (unsigned long)__builtin_return_address(0);
  93         sb_start_intwrite(sdp->sd_vfs);
  94         gfs2_log_reserve(sdp, tr.tr_reserved);
  95         WARN_ON_ONCE(current->journal_info);
  96         current->journal_info = &tr;
  97
  98         __gfs2_ail_flush(gl, 0, tr.tr_revokes);
  99
 100         gfs2_trans_end(sdp);
 101         gfs2_log_flush(sdp, NULL);
 102 }
 103
 104 void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
 105 {
 106         struct gfs2_sbd *sdp = gl->gl_sbd;
 107         unsigned int revokes = atomic_read(&gl->gl_ail_count);
 108         unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64);
 109         int ret;
 110
 111         if (!revokes)
 112                 return;
 113
 114         while (revokes > max_revokes)
 115                 max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64);
 116
 117         ret = gfs2_trans_begin(sdp, 0, max_revokes);
 118         if (ret)
 119                 return;
 120         __gfs2_ail_flush(gl, fsync, max_revokes);
 121         gfs2_trans_end(sdp);
 122         gfs2_log_flush(sdp, NULL);
 123 }
 124
 125 /**
 126  * rgrp_go_sync - sync out the metadata for this glock
 127  * @gl: the glock
 128  *
 129  * Called when demoting or unlocking an EX glock.  We must flush
 130  * to disk all dirty buffers/pages relating to this glock, and must not
 131  * not return to caller to demote/unlock the glock until I/O is complete.
 132  */
 133
 134 static void rgrp_go_sync(struct gfs2_glock *gl)
 135 {
 136         struct address_space *metamapping = gfs2_glock2aspace(gl);
 137         struct gfs2_rgrpd *rgd;
 138         int error;
 139
 140         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 141                 return;
 142         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 143
 144         gfs2_log_flush(gl->gl_sbd, gl);
 145         filemap_fdatawrite_range(metamapping, gl->gl_vm.start, gl->gl_vm.end);
 146         error = filemap_fdatawait_range(metamapping, gl->gl_vm.start, gl->gl_vm.end);
 147         mapping_set_error(metamapping, error);
 148         gfs2_ail_empty_gl(gl);
 149
 150         spin_lock(&gl->gl_spin);
 151         rgd = gl->gl_object;
 152         if (rgd)
 153                 gfs2_free_clones(rgd);
 154         spin_unlock(&gl->gl_spin);
 155 }
 156
 157 /**
 158  * rgrp_go_inval - invalidate the metadata for this glock
 159  * @gl: the glock
 160  * @flags:
 161  *
 162  * We never used LM_ST_DEFERRED with resource groups, so that we
 163  * should always see the metadata flag set here.
 164  *
 165  */
 166
 167 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
 168 {
 169         struct address_space *mapping = gfs2_glock2aspace(gl);
 170
 171         WARN_ON_ONCE(!(flags & DIO_METADATA));
 172         gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
 173         truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 174
 175         if (gl->gl_object) {
 176                 struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
 177                 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
 178         }
 179 }
 180
 181 /**
 182  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 183  * @gl: the glock protecting the inode
 184  *
 185  */
 186
 187 static void inode_go_sync(struct gfs2_glock *gl)
 188 {
 189         struct gfs2_inode *ip = gl->gl_object;
 190         struct address_space *metamapping = gfs2_glock2aspace(gl);
 191         int error;
 192
 193         if (ip && !S_ISREG(ip->i_inode.i_mode))
 194                 ip = NULL;
 195         if (ip) {
 196                 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
 197                         unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
 198                 inode_dio_wait(&ip->i_inode);
 199         }
 200         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 201                 return;
 202
 203         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 204
 205         gfs2_log_flush(gl->gl_sbd, gl);
 206         filemap_fdatawrite(metamapping);
 207         if (ip) {
 208                 struct address_space *mapping = ip->i_inode.i_mapping;
 209                 filemap_fdatawrite(mapping);
 210                 error = filemap_fdatawait(mapping);
 211                 mapping_set_error(mapping, error);
 212         }
 213         error = filemap_fdatawait(metamapping);
 214         mapping_set_error(metamapping, error);
 215         gfs2_ail_empty_gl(gl);
 216         /*
 217          * Writeback of the data mapping may cause the dirty flag to be set
 218          * so we have to clear it again here.
 219          */
 220         smp_mb__before_clear_bit();
 221         clear_bit(GLF_DIRTY, &gl->gl_flags);
 222 }
 223
 224 /**
 225  * inode_go_inval - prepare a inode glock to be released
 226  * @gl: the glock
 227  * @flags:
 228  *
 229  * Normally we invlidate everything, but if we are moving into
 230  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 231  * can keep hold of the metadata, since it won't have changed.
 232  *
 233  */
 234
 235 static void inode_go_inval(struct gfs2_glock *gl, int flags)
 236 {
 237         struct gfs2_inode *ip = gl->gl_object;
 238
 239         gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
 240
 241         if (flags & DIO_METADATA) {
 242                 struct address_space *mapping = gfs2_glock2aspace(gl);
 243                 truncate_inode_pages(mapping, 0);
 244                 if (ip) {
 245                         set_bit(GIF_INVALID, &ip->i_flags);
 246                         forget_all_cached_acls(&ip->i_inode);
 247                         gfs2_dir_hash_inval(ip);
 248                 }
 249         }
 250
 251         if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
 252                 gfs2_log_flush(gl->gl_sbd, NULL);
 253                 gl->gl_sbd->sd_rindex_uptodate = 0;
 254         }
 255         if (ip && S_ISREG(ip->i_inode.i_mode))
 256                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
 257 }
 258
 259 /**
 260  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 261  * @gl: the glock
 262  *
 263  * Returns: 1 if it's ok
 264  */
 265
 266 static int inode_go_demote_ok(const struct gfs2_glock *gl)
 267 {
 268         struct gfs2_sbd *sdp = gl->gl_sbd;
 269         struct gfs2_holder *gh;
 270
 271         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
 272                 return 0;
 273
 274         if (!list_empty(&gl->gl_holders)) {
 275                 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
 276                 if (gh->gh_list.next != &gl->gl_holders)
 277                         return 0;
 278         }
 279
 280         return 1;
 281 }
 282
 283 /**
 284  * gfs2_set_nlink - Set the inode's link count based on on-disk info
 285  * @inode: The inode in question
 286  * @nlink: The link count
 287  *
 288  * If the link count has hit zero, it must never be raised, whatever the
 289  * on-disk inode might say. When new struct inodes are created the link
 290  * count is set to 1, so that we can safely use this test even when reading
 291  * in on disk information for the first time.
 292  */
 293
 294 static void gfs2_set_nlink(struct inode *inode, u32 nlink)
 295 {
 296         /*
 297          * We will need to review setting the nlink count here in the
 298          * light of the forthcoming ro bind mount work. This is a reminder
 299          * to do that.
 300          */
 301         if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
 302                 if (nlink == 0)
 303                         clear_nlink(inode);
 304                 else
 305                         set_nlink(inode, nlink);
 306         }
 307 }
 308
 309 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 310 {
 311         const struct gfs2_dinode *str = buf;
 312         struct timespec atime;
 313         u16 height, depth;
 314
 315         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
 316                 goto corrupt;
 317         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 318         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 319         ip->i_inode.i_rdev = 0;
 320         switch (ip->i_inode.i_mode & S_IFMT) {
 321         case S_IFBLK:
 322         case S_IFCHR:
 323                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
 324                                            be32_to_cpu(str->di_minor));
 325                 break;
 326         };
 327
 328         i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
 329         i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
 330         gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
 331         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
 332         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
 333         atime.tv_sec = be64_to_cpu(str->di_atime);
 334         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
 335         if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
 336                 ip->i_inode.i_atime = atime;
 337         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
 338         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
 339         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
 340         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 341
 342         ip->i_goal = be64_to_cpu(str->di_goal_meta);
 343         ip->i_generation = be64_to_cpu(str->di_generation);
 344
 345         ip->i_diskflags = be32_to_cpu(str->di_flags);
 346         ip->i_eattr = be64_to_cpu(str->di_eattr);
 347         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
 348         gfs2_set_inode_flags(&ip->i_inode);
 349         height = be16_to_cpu(str->di_height);
 350         if (unlikely(height > GFS2_MAX_META_HEIGHT))
 351                 goto corrupt;
 352         ip->i_height = (u8)height;
 353
 354         depth = be16_to_cpu(str->di_depth);
 355         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
 356                 goto corrupt;
 357         ip->i_depth = (u8)depth;
 358         ip->i_entries = be32_to_cpu(str->di_entries);
 359
 360         if (S_ISREG(ip->i_inode.i_mode))
 361                 gfs2_set_aops(&ip->i_inode);
 362
 363         return 0;
 364 corrupt:
 365         gfs2_consist_inode(ip);
 366         return -EIO;
 367 }
 368
 369 /**
 370  * gfs2_inode_refresh - Refresh the incore copy of the dinode
 371  * @ip: The GFS2 inode
 372  *
 373  * Returns: errno
 374  */
 375
 376 int gfs2_inode_refresh(struct gfs2_inode *ip)
 377 {
 378         struct buffer_head *dibh;
 379         int error;
 380
 381         error = gfs2_meta_inode_buffer(ip, &dibh);
 382         if (error)
 383                 return error;
 384
 385         error = gfs2_dinode_in(ip, dibh->b_data);
 386         brelse(dibh);
 387         clear_bit(GIF_INVALID, &ip->i_flags);
 388
 389         return error;
 390 }
 391
 392 /**
 393  * inode_go_lock - operation done after an inode lock is locked by a process
 394  * @gl: the glock
 395  * @flags:
 396  *
 397  * Returns: errno
 398  */
 399
 400 static int inode_go_lock(struct gfs2_holder *gh)
 401 {
 402         struct gfs2_glock *gl = gh->gh_gl;
 403         struct gfs2_sbd *sdp = gl->gl_sbd;
 404         struct gfs2_inode *ip = gl->gl_object;
 405         int error = 0;
 406
 407         if (!ip || (gh->gh_flags & GL_SKIP))
 408                 return 0;
 409
 410         if (test_bit(GIF_INVALID, &ip->i_flags)) {
 411                 error = gfs2_inode_refresh(ip);
 412                 if (error)
 413                         return error;
 414         }
 415
 416         if (gh->gh_state != LM_ST_DEFERRED)
 417                 inode_dio_wait(&ip->i_inode);
 418
 419         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
 420             (gl->gl_state == LM_ST_EXCLUSIVE) &&
 421             (gh->gh_state == LM_ST_EXCLUSIVE)) {
 422                 spin_lock(&sdp->sd_trunc_lock);
 423                 if (list_empty(&ip->i_trunc_list))
 424                         list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
 425                 spin_unlock(&sdp->sd_trunc_lock);
 426                 wake_up(&sdp->sd_quota_wait);
 427                 return 1;
 428         }
 429
 430         return error;
 431 }
 432
 433 /**
 434  * inode_go_dump - print information about an inode
 435  * @seq: The iterator
 436  * @ip: the inode
 437  *
 438  * Returns: 0 on success, -ENOBUFS when we run out of space
 439  */
 440
 441 static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
 442 {
 443         const struct gfs2_inode *ip = gl->gl_object;
 444         if (ip == NULL)
 445                 return 0;
 446         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
 447                   (unsigned long long)ip->i_no_formal_ino,
 448                   (unsigned long long)ip->i_no_addr,
 449                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
 450                   (unsigned int)ip->i_diskflags,
 451                   (unsigned long long)i_size_read(&ip->i_inode));
 452         return 0;
 453 }
 454
 455 /**
 456  * trans_go_sync - promote/demote the transaction glock
 457  * @gl: the glock
 458  * @state: the requested state
 459  * @flags:
 460  *
 461  */
 462
 463 static void trans_go_sync(struct gfs2_glock *gl)
 464 {
 465         struct gfs2_sbd *sdp = gl->gl_sbd;
 466
 467         if (gl->gl_state != LM_ST_UNLOCKED &&
 468             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 469                 gfs2_meta_syncfs(sdp);
 470                 gfs2_log_shutdown(sdp);
 471         }
 472 }
 473
 474 /**
 475  * trans_go_xmote_bh - After promoting/demoting the transaction glock
 476  * @gl: the glock
 477  *
 478  */
 479
 480 static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 481 {
 482         struct gfs2_sbd *sdp = gl->gl_sbd;
 483         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 484         struct gfs2_glock *j_gl = ip->i_gl;
 485         struct gfs2_log_header_host head;
 486         int error;
 487
 488         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 489                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
 490
 491                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
 492                 if (error)
 493                         gfs2_consist(sdp);
 494                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
 495                         gfs2_consist(sdp);
 496
 497                 /*  Initialize some head of the log stuff  */
 498                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
 499                         sdp->sd_log_sequence = head.lh_sequence + 1;
 500                         gfs2_log_pointers_init(sdp, head.lh_blkno);
 501                 }
 502         }
 503         return 0;
 504 }
 505
 506 /**
 507  * trans_go_demote_ok
 508  * @gl: the glock
 509  *
 510  * Always returns 0
 511  */
 512
 513 static int trans_go_demote_ok(const struct gfs2_glock *gl)
 514 {
 515         return 0;
 516 }
 517
 518 /**
 519  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 520  * @gl: the glock
 521  *
 522  * gl_spin lock is held while calling this
 523  */
 524 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
 525 {
 526         struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
 527         struct gfs2_sbd *sdp = gl->gl_sbd;
 528
 529         if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY))
 530                 return;
 531
 532         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 533             gl->gl_state == LM_ST_SHARED && ip) {
 534                 gl->gl_lockref.count++;
 535                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
 536                         gl->gl_lockref.count--;
 537         }
 538 }
 539
 540 const struct gfs2_glock_operations gfs2_meta_glops = {
 541         .go_type = LM_TYPE_META,
 542 };
 543
 544 const struct gfs2_glock_operations gfs2_inode_glops = {
 545         .go_sync = inode_go_sync,
 546         .go_inval = inode_go_inval,
 547         .go_demote_ok = inode_go_demote_ok,
 548         .go_lock = inode_go_lock,
 549         .go_dump = inode_go_dump,
 550         .go_type = LM_TYPE_INODE,
 551         .go_flags = GLOF_ASPACE,
 552 };
 553
 554 const struct gfs2_glock_operations gfs2_rgrp_glops = {
 555         .go_sync = rgrp_go_sync,
 556         .go_inval = rgrp_go_inval,
 557         .go_lock = gfs2_rgrp_go_lock,
 558         .go_unlock = gfs2_rgrp_go_unlock,
 559         .go_dump = gfs2_rgrp_dump,
 560         .go_type = LM_TYPE_RGRP,
 561         .go_flags = GLOF_ASPACE | GLOF_LVB,
 562 };
 563
 564 const struct gfs2_glock_operations gfs2_trans_glops = {
 565         .go_sync = trans_go_sync,
 566         .go_xmote_bh = trans_go_xmote_bh,
 567         .go_demote_ok = trans_go_demote_ok,
 568         .go_type = LM_TYPE_NONDISK,
 569 };
 570
 571 const struct gfs2_glock_operations gfs2_iopen_glops = {
 572         .go_type = LM_TYPE_IOPEN,
 573         .go_callback = iopen_go_callback,
 574 };
 575
 576 const struct gfs2_glock_operations gfs2_flock_glops = {
 577         .go_type = LM_TYPE_FLOCK,
 578 };
 579
 580 const struct gfs2_glock_operations gfs2_nondisk_glops = {
 581         .go_type = LM_TYPE_NONDISK,
 582 };
 583
 584 const struct gfs2_glock_operations gfs2_quota_glops = {
 585         .go_type = LM_TYPE_QUOTA,
 586         .go_flags = GLOF_LVB,
 587 };
 588
 589 const struct gfs2_glock_operations gfs2_journal_glops = {
 590         .go_type = LM_TYPE_JOURNAL,
 591 };
 592
 593 const struct gfs2_glock_operations *gfs2_glops_list[] = {
 594         [LM_TYPE_META] = &gfs2_meta_glops,
 595         [LM_TYPE_INODE] = &gfs2_inode_glops,
 596         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
 597         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
 598         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
 599         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
 600         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
 601         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
 602 };
 603