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