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  *
  46  * None of the buffers should be dirty, locked, or pinned.
  47  */
  48
  49 static void __gfs2_ail_flush(struct gfs2_glock *gl, unsigned long b_state)
  50 {
  51         struct gfs2_sbd *sdp = gl->gl_sbd;
  52         struct list_head *head = &gl->gl_ail_list;
  53         struct gfs2_bufdata *bd;
  54         struct buffer_head *bh;
  55         sector_t blocknr;
  56
  57         spin_lock(&sdp->sd_ail_lock);
  58         while (!list_empty(head)) {
  59                 bd = list_entry(head->next, struct gfs2_bufdata,
  60                                 bd_ail_gl_list);
  61                 bh = bd->bd_bh;
  62                 blocknr = bh->b_blocknr;
  63                 if (bh->b_state & b_state)
  64                         gfs2_ail_error(gl, bh);
  65                 bh->b_private = NULL;
  66                 gfs2_remove_from_ail(bd); /* drops ref on bh */
  67                 spin_unlock(&sdp->sd_ail_lock);
  68
  69                 bd->bd_bh = NULL;
  70                 bd->bd_blkno = blocknr;
  71
  72                 gfs2_log_lock(sdp);
  73                 gfs2_trans_add_revoke(sdp, bd);
  74                 gfs2_log_unlock(sdp);
  75
  76                 spin_lock(&sdp->sd_ail_lock);
  77         }
  78         gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
  79         spin_unlock(&sdp->sd_ail_lock);
  80 }
  81
  82
  83 static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
  84 {
  85         struct gfs2_sbd *sdp = gl->gl_sbd;
  86         struct gfs2_trans tr;
  87
  88         memset(&tr, 0, sizeof(tr));
  89         tr.tr_revokes = atomic_read(&gl->gl_ail_count);
  90
  91         if (!tr.tr_revokes)
  92                 return;
  93
  94         /* A shortened, inline version of gfs2_trans_begin() */
  95         tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
  96         tr.tr_ip = (unsigned long)__builtin_return_address(0);
  97         INIT_LIST_HEAD(&tr.tr_list_buf);
  98         gfs2_log_reserve(sdp, tr.tr_reserved);
  99         BUG_ON(current->journal_info);
 100         current->journal_info = &tr;
 101
 102         __gfs2_ail_flush(gl, (1ul << BH_Dirty)|(1ul << BH_Pinned)|(1ul << BH_Lock));
 103
 104         gfs2_trans_end(sdp);
 105         gfs2_log_flush(sdp, NULL);
 106 }
 107
 108 void gfs2_ail_flush(struct gfs2_glock *gl)
 109 {
 110         struct gfs2_sbd *sdp = gl->gl_sbd;
 111         unsigned int revokes = atomic_read(&gl->gl_ail_count);
 112         int ret;
 113
 114         if (!revokes)
 115                 return;
 116
 117         ret = gfs2_trans_begin(sdp, 0, revokes);
 118         if (ret)
 119                 return;
 120         __gfs2_ail_flush(gl, (1ul << BH_Dirty)|(1ul << BH_Pinned));
 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 = gl->gl_object;
 138         unsigned int x;
 139         int error;
 140
 141         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 142                 return;
 143         BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
 144
 145         gfs2_log_flush(gl->gl_sbd, gl);
 146         filemap_fdatawrite(metamapping);
 147         error = filemap_fdatawait(metamapping);
 148         mapping_set_error(metamapping, error);
 149         gfs2_ail_empty_gl(gl);
 150
 151         if (!rgd)
 152                 return;
 153
 154         for (x = 0; x < rgd->rd_length; x++) {
 155                 struct gfs2_bitmap *bi = rgd->rd_bits + x;
 156                 kfree(bi->bi_clone);
 157                 bi->bi_clone = NULL;
 158         }
 159 }
 160
 161 /**
 162  * rgrp_go_inval - invalidate the metadata for this glock
 163  * @gl: the glock
 164  * @flags:
 165  *
 166  * We never used LM_ST_DEFERRED with resource groups, so that we
 167  * should always see the metadata flag set here.
 168  *
 169  */
 170
 171 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
 172 {
 173         struct address_space *mapping = gfs2_glock2aspace(gl);
 174
 175         BUG_ON(!(flags & DIO_METADATA));
 176         gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
 177         truncate_inode_pages(mapping, 0);
 178
 179         if (gl->gl_object) {
 180                 struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
 181                 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
 182         }
 183 }
 184
 185 /**
 186  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 187  * @gl: the glock protecting the inode
 188  *
 189  */
 190
 191 static void inode_go_sync(struct gfs2_glock *gl)
 192 {
 193         struct gfs2_inode *ip = gl->gl_object;
 194         struct address_space *metamapping = gfs2_glock2aspace(gl);
 195         int error;
 196
 197         if (ip && !S_ISREG(ip->i_inode.i_mode))
 198                 ip = NULL;
 199         if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
 200                 unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
 201         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 202                 return;
 203
 204         BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
 205
 206         gfs2_log_flush(gl->gl_sbd, gl);
 207         filemap_fdatawrite(metamapping);
 208         if (ip) {
 209                 struct address_space *mapping = ip->i_inode.i_mapping;
 210                 filemap_fdatawrite(mapping);
 211                 error = filemap_fdatawait(mapping);
 212                 mapping_set_error(mapping, error);
 213         }
 214         error = filemap_fdatawait(metamapping);
 215         mapping_set_error(metamapping, error);
 216         gfs2_ail_empty_gl(gl);
 217         /*
 218          * Writeback of the data mapping may cause the dirty flag to be set
 219          * so we have to clear it again here.
 220          */
 221         smp_mb__before_clear_bit();
 222         clear_bit(GLF_DIRTY, &gl->gl_flags);
 223 }
 224
 225 /**
 226  * inode_go_inval - prepare a inode glock to be released
 227  * @gl: the glock
 228  * @flags:
 229  *
 230  * Normally we invlidate everything, but if we are moving into
 231  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 232  * can keep hold of the metadata, since it won't have changed.
 233  *
 234  */
 235
 236 static void inode_go_inval(struct gfs2_glock *gl, int flags)
 237 {
 238         struct gfs2_inode *ip = gl->gl_object;
 239
 240         gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
 241
 242         if (flags & DIO_METADATA) {
 243                 struct address_space *mapping = gfs2_glock2aspace(gl);
 244                 truncate_inode_pages(mapping, 0);
 245                 if (ip) {
 246                         set_bit(GIF_INVALID, &ip->i_flags);
 247                         forget_all_cached_acls(&ip->i_inode);
 248                         gfs2_dir_hash_inval(ip);
 249                 }
 250         }
 251
 252         if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
 253                 gfs2_log_flush(gl->gl_sbd, NULL);
 254                 gl->gl_sbd->sd_rindex_uptodate = 0;
 255         }
 256         if (ip && S_ISREG(ip->i_inode.i_mode))
 257                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
 258 }
 259
 260 /**
 261  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 262  * @gl: the glock
 263  *
 264  * Returns: 1 if it's ok
 265  */
 266
 267 static int inode_go_demote_ok(const struct gfs2_glock *gl)
 268 {
 269         struct gfs2_sbd *sdp = gl->gl_sbd;
 270         struct gfs2_holder *gh;
 271
 272         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
 273                 return 0;
 274
 275         if (!list_empty(&gl->gl_holders)) {
 276                 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
 277                 if (gh->gh_list.next != &gl->gl_holders)
 278                         return 0;
 279         }
 280
 281         return 1;
 282 }
 283
 284 /**
 285  * gfs2_set_nlink - Set the inode's link count based on on-disk info
 286  * @inode: The inode in question
 287  * @nlink: The link count
 288  *
 289  * If the link count has hit zero, it must never be raised, whatever the
 290  * on-disk inode might say. When new struct inodes are created the link
 291  * count is set to 1, so that we can safely use this test even when reading
 292  * in on disk information for the first time.
 293  */
 294
 295 static void gfs2_set_nlink(struct inode *inode, u32 nlink)
 296 {
 297         /*
 298          * We will need to review setting the nlink count here in the
 299          * light of the forthcoming ro bind mount work. This is a reminder
 300          * to do that.
 301          */
 302         if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
 303                 if (nlink == 0)
 304                         clear_nlink(inode);
 305                 else
 306                         inode->i_nlink = nlink;
 307         }
 308 }
 309
 310 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 311 {
 312         const struct gfs2_dinode *str = buf;
 313         struct timespec atime;
 314         u16 height, depth;
 315
 316         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
 317                 goto corrupt;
 318         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 319         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 320         ip->i_inode.i_rdev = 0;
 321         switch (ip->i_inode.i_mode & S_IFMT) {
 322         case S_IFBLK:
 323         case S_IFCHR:
 324                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
 325                                            be32_to_cpu(str->di_minor));
 326                 break;
 327         };
 328
 329         ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
 330         ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
 331         gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
 332         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
 333         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
 334         atime.tv_sec = be64_to_cpu(str->di_atime);
 335         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
 336         if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
 337                 ip->i_inode.i_atime = atime;
 338         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
 339         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
 340         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
 341         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 342
 343         ip->i_goal = be64_to_cpu(str->di_goal_meta);
 344         ip->i_generation = be64_to_cpu(str->di_generation);
 345
 346         ip->i_diskflags = be32_to_cpu(str->di_flags);
 347         ip->i_eattr = be64_to_cpu(str->di_eattr);
 348         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
 349         gfs2_set_inode_flags(&ip->i_inode);
 350         height = be16_to_cpu(str->di_height);
 351         if (unlikely(height > GFS2_MAX_META_HEIGHT))
 352                 goto corrupt;
 353         ip->i_height = (u8)height;
 354
 355         depth = be16_to_cpu(str->di_depth);
 356         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
 357                 goto corrupt;
 358         ip->i_depth = (u8)depth;
 359         ip->i_entries = be32_to_cpu(str->di_entries);
 360
 361         if (S_ISREG(ip->i_inode.i_mode))
 362                 gfs2_set_aops(&ip->i_inode);
 363
 364         return 0;
 365 corrupt:
 366         gfs2_consist_inode(ip);
 367         return -EIO;
 368 }
 369
 370 /**
 371  * gfs2_inode_refresh - Refresh the incore copy of the dinode
 372  * @ip: The GFS2 inode
 373  *
 374  * Returns: errno
 375  */
 376
 377 int gfs2_inode_refresh(struct gfs2_inode *ip)
 378 {
 379         struct buffer_head *dibh;
 380         int error;
 381
 382         error = gfs2_meta_inode_buffer(ip, &dibh);
 383         if (error)
 384                 return error;
 385
 386         if (gfs2_metatype_check(GFS2_SB(&ip->i_inode), dibh, GFS2_METATYPE_DI)) {
 387                 brelse(dibh);
 388                 return -EIO;
 389         }
 390
 391         error = gfs2_dinode_in(ip, dibh->b_data);
 392         brelse(dibh);
 393         clear_bit(GIF_INVALID, &ip->i_flags);
 394
 395         return error;
 396 }
 397
 398 /**
 399  * inode_go_lock - operation done after an inode lock is locked by a process
 400  * @gl: the glock
 401  * @flags:
 402  *
 403  * Returns: errno
 404  */
 405
 406 static int inode_go_lock(struct gfs2_holder *gh)
 407 {
 408         struct gfs2_glock *gl = gh->gh_gl;
 409         struct gfs2_sbd *sdp = gl->gl_sbd;
 410         struct gfs2_inode *ip = gl->gl_object;
 411         int error = 0;
 412
 413         if (!ip || (gh->gh_flags & GL_SKIP))
 414                 return 0;
 415
 416         if (test_bit(GIF_INVALID, &ip->i_flags)) {
 417                 error = gfs2_inode_refresh(ip);
 418                 if (error)
 419                         return error;
 420         }
 421
 422         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
 423             (gl->gl_state == LM_ST_EXCLUSIVE) &&
 424             (gh->gh_state == LM_ST_EXCLUSIVE)) {
 425                 spin_lock(&sdp->sd_trunc_lock);
 426                 if (list_empty(&ip->i_trunc_list))
 427                         list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
 428                 spin_unlock(&sdp->sd_trunc_lock);
 429                 wake_up(&sdp->sd_quota_wait);
 430                 return 1;
 431         }
 432
 433         return error;
 434 }
 435
 436 /**
 437  * inode_go_dump - print information about an inode
 438  * @seq: The iterator
 439  * @ip: the inode
 440  *
 441  * Returns: 0 on success, -ENOBUFS when we run out of space
 442  */
 443
 444 static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
 445 {
 446         const struct gfs2_inode *ip = gl->gl_object;
 447         if (ip == NULL)
 448                 return 0;
 449         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
 450                   (unsigned long long)ip->i_no_formal_ino,
 451                   (unsigned long long)ip->i_no_addr,
 452                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
 453                   (unsigned int)ip->i_diskflags,
 454                   (unsigned long long)i_size_read(&ip->i_inode));
 455         return 0;
 456 }
 457
 458 /**
 459  * trans_go_sync - promote/demote the transaction glock
 460  * @gl: the glock
 461  * @state: the requested state
 462  * @flags:
 463  *
 464  */
 465
 466 static void trans_go_sync(struct gfs2_glock *gl)
 467 {
 468         struct gfs2_sbd *sdp = gl->gl_sbd;
 469
 470         if (gl->gl_state != LM_ST_UNLOCKED &&
 471             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 472                 gfs2_meta_syncfs(sdp);
 473                 gfs2_log_shutdown(sdp);
 474         }
 475 }
 476
 477 /**
 478  * trans_go_xmote_bh - After promoting/demoting the transaction glock
 479  * @gl: the glock
 480  *
 481  */
 482
 483 static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 484 {
 485         struct gfs2_sbd *sdp = gl->gl_sbd;
 486         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 487         struct gfs2_glock *j_gl = ip->i_gl;
 488         struct gfs2_log_header_host head;
 489         int error;
 490
 491         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 492                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
 493
 494                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
 495                 if (error)
 496                         gfs2_consist(sdp);
 497                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
 498                         gfs2_consist(sdp);
 499
 500                 /*  Initialize some head of the log stuff  */
 501                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
 502                         sdp->sd_log_sequence = head.lh_sequence + 1;
 503                         gfs2_log_pointers_init(sdp, head.lh_blkno);
 504                 }
 505         }
 506         return 0;
 507 }
 508
 509 /**
 510  * trans_go_demote_ok
 511  * @gl: the glock
 512  *
 513  * Always returns 0
 514  */
 515
 516 static int trans_go_demote_ok(const struct gfs2_glock *gl)
 517 {
 518         return 0;
 519 }
 520
 521 /**
 522  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 523  * @gl: the glock
 524  *
 525  * gl_spin lock is held while calling this
 526  */
 527 static void iopen_go_callback(struct gfs2_glock *gl)
 528 {
 529         struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
 530         struct gfs2_sbd *sdp = gl->gl_sbd;
 531
 532         if (sdp->sd_vfs->s_flags & MS_RDONLY)
 533                 return;
 534
 535         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 536             gl->gl_state == LM_ST_SHARED && ip) {
 537                 gfs2_glock_hold(gl);
 538                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
 539                         gfs2_glock_put_nolock(gl);
 540         }
 541 }
 542
 543 const struct gfs2_glock_operations gfs2_meta_glops = {
 544         .go_type = LM_TYPE_META,
 545 };
 546
 547 const struct gfs2_glock_operations gfs2_inode_glops = {
 548         .go_xmote_th = inode_go_sync,
 549         .go_inval = inode_go_inval,
 550         .go_demote_ok = inode_go_demote_ok,
 551         .go_lock = inode_go_lock,
 552         .go_dump = inode_go_dump,
 553         .go_type = LM_TYPE_INODE,
 554         .go_flags = GLOF_ASPACE,
 555 };
 556
 557 const struct gfs2_glock_operations gfs2_rgrp_glops = {
 558         .go_xmote_th = rgrp_go_sync,
 559         .go_inval = rgrp_go_inval,
 560         .go_lock = gfs2_rgrp_go_lock,
 561         .go_unlock = gfs2_rgrp_go_unlock,
 562         .go_dump = gfs2_rgrp_dump,
 563         .go_type = LM_TYPE_RGRP,
 564         .go_flags = GLOF_ASPACE,
 565 };
 566
 567 const struct gfs2_glock_operations gfs2_trans_glops = {
 568         .go_xmote_th = trans_go_sync,
 569         .go_xmote_bh = trans_go_xmote_bh,
 570         .go_demote_ok = trans_go_demote_ok,
 571         .go_type = LM_TYPE_NONDISK,
 572 };
 573
 574 const struct gfs2_glock_operations gfs2_iopen_glops = {
 575         .go_type = LM_TYPE_IOPEN,
 576         .go_callback = iopen_go_callback,
 577 };
 578
 579 const struct gfs2_glock_operations gfs2_flock_glops = {
 580         .go_type = LM_TYPE_FLOCK,
 581 };
 582
 583 const struct gfs2_glock_operations gfs2_nondisk_glops = {
 584         .go_type = LM_TYPE_NONDISK,
 585 };
 586
 587 const struct gfs2_glock_operations gfs2_quota_glops = {
 588         .go_type = LM_TYPE_QUOTA,
 589 };
 590
 591 const struct gfs2_glock_operations gfs2_journal_glops = {
 592         .go_type = LM_TYPE_JOURNAL,
 593 };
 594
 595 const struct gfs2_glock_operations *gfs2_glops_list[] = {
 596         [LM_TYPE_META] = &gfs2_meta_glops,
 597         [LM_TYPE_INODE] = &gfs2_inode_glops,
 598         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
 599         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
 600         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
 601         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
 602         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
 603         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
 604 };
 605