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  * 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 = gfs2_glock2rgrp(gl);
 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 static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl)
 201 {
 202         struct gfs2_inode *ip;
 203
 204         spin_lock(&gl->gl_lockref.lock);
 205         ip = gl->gl_object;
 206         if (ip)
 207                 set_bit(GIF_GLOP_PENDING, &ip->i_flags);
 208         spin_unlock(&gl->gl_lockref.lock);
 209         return ip;
 210 }
 211
 212 struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl)
 213 {
 214         struct gfs2_rgrpd *rgd;
 215
 216         spin_lock(&gl->gl_lockref.lock);
 217         rgd = gl->gl_object;
 218         spin_unlock(&gl->gl_lockref.lock);
 219
 220         return rgd;
 221 }
 222
 223 static void gfs2_clear_glop_pending(struct gfs2_inode *ip)
 224 {
 225         if (!ip)
 226                 return;
 227
 228         clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags);
 229         wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING);
 230 }
 231
 232 /**
 233  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 234  * @gl: the glock protecting the inode
 235  *
 236  */
 237
 238 static void inode_go_sync(struct gfs2_glock *gl)
 239 {
 240         struct gfs2_inode *ip = gfs2_glock2inode(gl);
 241         int isreg = ip && S_ISREG(ip->i_inode.i_mode);
 242         struct address_space *metamapping = gfs2_glock2aspace(gl);
 243         int error;
 244
 245         if (isreg) {
 246                 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
 247                         unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
 248                 inode_dio_wait(&ip->i_inode);
 249         }
 250         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 251                 goto out;
 252
 253         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 254
 255         gfs2_log_flush(gl->gl_name.ln_sbd, gl, NORMAL_FLUSH);
 256         filemap_fdatawrite(metamapping);
 257         if (isreg) {
 258                 struct address_space *mapping = ip->i_inode.i_mapping;
 259                 filemap_fdatawrite(mapping);
 260                 error = filemap_fdatawait(mapping);
 261                 mapping_set_error(mapping, error);
 262         }
 263         error = filemap_fdatawait(metamapping);
 264         mapping_set_error(metamapping, error);
 265         gfs2_ail_empty_gl(gl);
 266         /*
 267          * Writeback of the data mapping may cause the dirty flag to be set
 268          * so we have to clear it again here.
 269          */
 270         smp_mb__before_atomic();
 271         clear_bit(GLF_DIRTY, &gl->gl_flags);
 272
 273 out:
 274         gfs2_clear_glop_pending(ip);
 275 }
 276
 277 /**
 278  * inode_go_inval - prepare a inode glock to be released
 279  * @gl: the glock
 280  * @flags:
 281  *
 282  * Normally we invalidate everything, but if we are moving into
 283  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 284  * can keep hold of the metadata, since it won't have changed.
 285  *
 286  */
 287
 288 static void inode_go_inval(struct gfs2_glock *gl, int flags)
 289 {
 290         struct gfs2_inode *ip = gfs2_glock2inode(gl);
 291
 292         gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count));
 293
 294         if (flags & DIO_METADATA) {
 295                 struct address_space *mapping = gfs2_glock2aspace(gl);
 296                 truncate_inode_pages(mapping, 0);
 297                 if (ip) {
 298                         set_bit(GIF_INVALID, &ip->i_flags);
 299                         forget_all_cached_acls(&ip->i_inode);
 300                         security_inode_invalidate_secctx(&ip->i_inode);
 301                         gfs2_dir_hash_inval(ip);
 302                 }
 303         }
 304
 305         if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
 306                 gfs2_log_flush(gl->gl_name.ln_sbd, NULL, NORMAL_FLUSH);
 307                 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
 308         }
 309         if (ip && S_ISREG(ip->i_inode.i_mode))
 310                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
 311
 312         gfs2_clear_glop_pending(ip);
 313 }
 314
 315 /**
 316  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 317  * @gl: the glock
 318  *
 319  * Returns: 1 if it's ok
 320  */
 321
 322 static int inode_go_demote_ok(const struct gfs2_glock *gl)
 323 {
 324         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 325
 326         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
 327                 return 0;
 328
 329         return 1;
 330 }
 331
 332 /**
 333  * gfs2_set_nlink - Set the inode's link count based on on-disk info
 334  * @inode: The inode in question
 335  * @nlink: The link count
 336  *
 337  * If the link count has hit zero, it must never be raised, whatever the
 338  * on-disk inode might say. When new struct inodes are created the link
 339  * count is set to 1, so that we can safely use this test even when reading
 340  * in on disk information for the first time.
 341  */
 342
 343 static void gfs2_set_nlink(struct inode *inode, u32 nlink)
 344 {
 345         /*
 346          * We will need to review setting the nlink count here in the
 347          * light of the forthcoming ro bind mount work. This is a reminder
 348          * to do that.
 349          */
 350         if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
 351                 if (nlink == 0)
 352                         clear_nlink(inode);
 353                 else
 354                         set_nlink(inode, nlink);
 355         }
 356 }
 357
 358 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 359 {
 360         const struct gfs2_dinode *str = buf;
 361         struct timespec atime;
 362         u16 height, depth;
 363
 364         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
 365                 goto corrupt;
 366         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 367         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 368         ip->i_inode.i_rdev = 0;
 369         switch (ip->i_inode.i_mode & S_IFMT) {
 370         case S_IFBLK:
 371         case S_IFCHR:
 372                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
 373                                            be32_to_cpu(str->di_minor));
 374                 break;
 375         };
 376
 377         i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
 378         i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
 379         gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
 380         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
 381         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
 382         atime.tv_sec = be64_to_cpu(str->di_atime);
 383         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
 384         if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
 385                 ip->i_inode.i_atime = atime;
 386         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
 387         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
 388         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
 389         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 390
 391         ip->i_goal = be64_to_cpu(str->di_goal_meta);
 392         ip->i_generation = be64_to_cpu(str->di_generation);
 393
 394         ip->i_diskflags = be32_to_cpu(str->di_flags);
 395         ip->i_eattr = be64_to_cpu(str->di_eattr);
 396         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
 397         gfs2_set_inode_flags(&ip->i_inode);
 398         height = be16_to_cpu(str->di_height);
 399         if (unlikely(height > GFS2_MAX_META_HEIGHT))
 400                 goto corrupt;
 401         ip->i_height = (u8)height;
 402
 403         depth = be16_to_cpu(str->di_depth);
 404         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
 405                 goto corrupt;
 406         ip->i_depth = (u8)depth;
 407         ip->i_entries = be32_to_cpu(str->di_entries);
 408
 409         if (S_ISREG(ip->i_inode.i_mode))
 410                 gfs2_set_aops(&ip->i_inode);
 411
 412         return 0;
 413 corrupt:
 414         gfs2_consist_inode(ip);
 415         return -EIO;
 416 }
 417
 418 /**
 419  * gfs2_inode_refresh - Refresh the incore copy of the dinode
 420  * @ip: The GFS2 inode
 421  *
 422  * Returns: errno
 423  */
 424
 425 int gfs2_inode_refresh(struct gfs2_inode *ip)
 426 {
 427         struct buffer_head *dibh;
 428         int error;
 429
 430         error = gfs2_meta_inode_buffer(ip, &dibh);
 431         if (error)
 432                 return error;
 433
 434         error = gfs2_dinode_in(ip, dibh->b_data);
 435         brelse(dibh);
 436         clear_bit(GIF_INVALID, &ip->i_flags);
 437
 438         return error;
 439 }
 440
 441 /**
 442  * inode_go_lock - operation done after an inode lock is locked by a process
 443  * @gl: the glock
 444  * @flags:
 445  *
 446  * Returns: errno
 447  */
 448
 449 static int inode_go_lock(struct gfs2_holder *gh)
 450 {
 451         struct gfs2_glock *gl = gh->gh_gl;
 452         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 453         struct gfs2_inode *ip = gl->gl_object;
 454         int error = 0;
 455
 456         if (!ip || (gh->gh_flags & GL_SKIP))
 457                 return 0;
 458
 459         if (test_bit(GIF_INVALID, &ip->i_flags)) {
 460                 error = gfs2_inode_refresh(ip);
 461                 if (error)
 462                         return error;
 463         }
 464
 465         if (gh->gh_state != LM_ST_DEFERRED)
 466                 inode_dio_wait(&ip->i_inode);
 467
 468         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
 469             (gl->gl_state == LM_ST_EXCLUSIVE) &&
 470             (gh->gh_state == LM_ST_EXCLUSIVE)) {
 471                 spin_lock(&sdp->sd_trunc_lock);
 472                 if (list_empty(&ip->i_trunc_list))
 473                         list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
 474                 spin_unlock(&sdp->sd_trunc_lock);
 475                 wake_up(&sdp->sd_quota_wait);
 476                 return 1;
 477         }
 478
 479         return error;
 480 }
 481
 482 /**
 483  * inode_go_dump - print information about an inode
 484  * @seq: The iterator
 485  * @ip: the inode
 486  *
 487  */
 488
 489 static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
 490 {
 491         const struct gfs2_inode *ip = gl->gl_object;
 492         if (ip == NULL)
 493                 return;
 494         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
 495                   (unsigned long long)ip->i_no_formal_ino,
 496                   (unsigned long long)ip->i_no_addr,
 497                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
 498                   (unsigned int)ip->i_diskflags,
 499                   (unsigned long long)i_size_read(&ip->i_inode));
 500 }
 501
 502 /**
 503  * freeze_go_sync - promote/demote the freeze glock
 504  * @gl: the glock
 505  * @state: the requested state
 506  * @flags:
 507  *
 508  */
 509
 510 static void freeze_go_sync(struct gfs2_glock *gl)
 511 {
 512         int error = 0;
 513         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 514
 515         if (gl->gl_state == LM_ST_SHARED &&
 516             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 517                 atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
 518                 error = freeze_super(sdp->sd_vfs);
 519                 if (error) {
 520                         printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error);
 521                         gfs2_assert_withdraw(sdp, 0);
 522                 }
 523                 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
 524                 gfs2_log_flush(sdp, NULL, FREEZE_FLUSH);
 525         }
 526 }
 527
 528 /**
 529  * freeze_go_xmote_bh - After promoting/demoting the freeze glock
 530  * @gl: the glock
 531  *
 532  */
 533
 534 static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 535 {
 536         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 537         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 538         struct gfs2_glock *j_gl = ip->i_gl;
 539         struct gfs2_log_header_host head;
 540         int error;
 541
 542         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 543                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
 544
 545                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
 546                 if (error)
 547                         gfs2_consist(sdp);
 548                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
 549                         gfs2_consist(sdp);
 550
 551                 /*  Initialize some head of the log stuff  */
 552                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
 553                         sdp->sd_log_sequence = head.lh_sequence + 1;
 554                         gfs2_log_pointers_init(sdp, head.lh_blkno);
 555                 }
 556         }
 557         return 0;
 558 }
 559
 560 /**
 561  * trans_go_demote_ok
 562  * @gl: the glock
 563  *
 564  * Always returns 0
 565  */
 566
 567 static int freeze_go_demote_ok(const struct gfs2_glock *gl)
 568 {
 569         return 0;
 570 }
 571
 572 /**
 573  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 574  * @gl: the glock
 575  *
 576  * gl_lockref.lock lock is held while calling this
 577  */
 578 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
 579 {
 580         struct gfs2_inode *ip = gl->gl_object;
 581         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 582
 583         if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY))
 584                 return;
 585
 586         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 587             gl->gl_state == LM_ST_SHARED && ip) {
 588                 gl->gl_lockref.count++;
 589                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
 590                         gl->gl_lockref.count--;
 591         }
 592 }
 593
 594 const struct gfs2_glock_operations gfs2_meta_glops = {
 595         .go_type = LM_TYPE_META,
 596 };
 597
 598 const struct gfs2_glock_operations gfs2_inode_glops = {
 599         .go_sync = inode_go_sync,
 600         .go_inval = inode_go_inval,
 601         .go_demote_ok = inode_go_demote_ok,
 602         .go_lock = inode_go_lock,
 603         .go_dump = inode_go_dump,
 604         .go_type = LM_TYPE_INODE,
 605         .go_flags = GLOF_ASPACE | GLOF_LRU,
 606 };
 607
 608 const struct gfs2_glock_operations gfs2_rgrp_glops = {
 609         .go_sync = rgrp_go_sync,
 610         .go_inval = rgrp_go_inval,
 611         .go_lock = gfs2_rgrp_go_lock,
 612         .go_unlock = gfs2_rgrp_go_unlock,
 613         .go_dump = gfs2_rgrp_dump,
 614         .go_type = LM_TYPE_RGRP,
 615         .go_flags = GLOF_LVB,
 616 };
 617
 618 const struct gfs2_glock_operations gfs2_freeze_glops = {
 619         .go_sync = freeze_go_sync,
 620         .go_xmote_bh = freeze_go_xmote_bh,
 621         .go_demote_ok = freeze_go_demote_ok,
 622         .go_type = LM_TYPE_NONDISK,
 623 };
 624
 625 const struct gfs2_glock_operations gfs2_iopen_glops = {
 626         .go_type = LM_TYPE_IOPEN,
 627         .go_callback = iopen_go_callback,
 628         .go_flags = GLOF_LRU,
 629 };
 630
 631 const struct gfs2_glock_operations gfs2_flock_glops = {
 632         .go_type = LM_TYPE_FLOCK,
 633         .go_flags = GLOF_LRU,
 634 };
 635
 636 const struct gfs2_glock_operations gfs2_nondisk_glops = {
 637         .go_type = LM_TYPE_NONDISK,
 638 };
 639
 640 const struct gfs2_glock_operations gfs2_quota_glops = {
 641         .go_type = LM_TYPE_QUOTA,
 642         .go_flags = GLOF_LVB | GLOF_LRU,
 643 };
 644
 645 const struct gfs2_glock_operations gfs2_journal_glops = {
 646         .go_type = LM_TYPE_JOURNAL,
 647 };
 648
 649 const struct gfs2_glock_operations *gfs2_glops_list[] = {
 650         [LM_TYPE_META] = &gfs2_meta_glops,
 651         [LM_TYPE_INODE] = &gfs2_inode_glops,
 652         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
 653         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
 654         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
 655         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
 656         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
 657         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
 658 };
 659