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, GFS2_LOG_HEAD_FLUSH_NORMAL |
 111                        GFS2_LFC_AIL_EMPTY_GL);
 112 }
 113
 114 void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
 115 {
 116         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 117         unsigned int revokes = atomic_read(&gl->gl_ail_count);
 118         unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64);
 119         int ret;
 120
 121         if (!revokes)
 122                 return;
 123
 124         while (revokes > max_revokes)
 125                 max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64);
 126
 127         ret = gfs2_trans_begin(sdp, 0, max_revokes);
 128         if (ret)
 129                 return;
 130         __gfs2_ail_flush(gl, fsync, max_revokes);
 131         gfs2_trans_end(sdp);
 132         gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL |
 133                        GFS2_LFC_AIL_FLUSH);
 134 }
 135
 136 /**
 137  * rgrp_go_sync - sync out the metadata for this glock
 138  * @gl: the glock
 139  *
 140  * Called when demoting or unlocking an EX glock.  We must flush
 141  * to disk all dirty buffers/pages relating to this glock, and must not
 142  * return to caller to demote/unlock the glock until I/O is complete.
 143  */
 144
 145 static void rgrp_go_sync(struct gfs2_glock *gl)
 146 {
 147         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 148         struct address_space *mapping = &sdp->sd_aspace;
 149         struct gfs2_rgrpd *rgd;
 150         int error;
 151
 152         spin_lock(&gl->gl_lockref.lock);
 153         rgd = gl->gl_object;
 154         if (rgd)
 155                 gfs2_rgrp_brelse(rgd);
 156         spin_unlock(&gl->gl_lockref.lock);
 157
 158         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 159                 return;
 160         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 161
 162         gfs2_log_flush(sdp, gl, GFS2_LOG_HEAD_FLUSH_NORMAL |
 163                        GFS2_LFC_RGRP_GO_SYNC);
 164         filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 165         error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 166         mapping_set_error(mapping, error);
 167         gfs2_ail_empty_gl(gl);
 168
 169         spin_lock(&gl->gl_lockref.lock);
 170         rgd = gl->gl_object;
 171         if (rgd)
 172                 gfs2_free_clones(rgd);
 173         spin_unlock(&gl->gl_lockref.lock);
 174 }
 175
 176 /**
 177  * rgrp_go_inval - invalidate the metadata for this glock
 178  * @gl: the glock
 179  * @flags:
 180  *
 181  * We never used LM_ST_DEFERRED with resource groups, so that we
 182  * should always see the metadata flag set here.
 183  *
 184  */
 185
 186 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
 187 {
 188         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 189         struct address_space *mapping = &sdp->sd_aspace;
 190         struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
 191
 192         if (rgd)
 193                 gfs2_rgrp_brelse(rgd);
 194
 195         WARN_ON_ONCE(!(flags & DIO_METADATA));
 196         gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
 197         truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 198
 199         if (rgd)
 200                 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
 201 }
 202
 203 static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl)
 204 {
 205         struct gfs2_inode *ip;
 206
 207         spin_lock(&gl->gl_lockref.lock);
 208         ip = gl->gl_object;
 209         if (ip)
 210                 set_bit(GIF_GLOP_PENDING, &ip->i_flags);
 211         spin_unlock(&gl->gl_lockref.lock);
 212         return ip;
 213 }
 214
 215 struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl)
 216 {
 217         struct gfs2_rgrpd *rgd;
 218
 219         spin_lock(&gl->gl_lockref.lock);
 220         rgd = gl->gl_object;
 221         spin_unlock(&gl->gl_lockref.lock);
 222
 223         return rgd;
 224 }
 225
 226 static void gfs2_clear_glop_pending(struct gfs2_inode *ip)
 227 {
 228         if (!ip)
 229                 return;
 230
 231         clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags);
 232         wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING);
 233 }
 234
 235 /**
 236  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 237  * @gl: the glock protecting the inode
 238  *
 239  */
 240
 241 static void inode_go_sync(struct gfs2_glock *gl)
 242 {
 243         struct gfs2_inode *ip = gfs2_glock2inode(gl);
 244         int isreg = ip && S_ISREG(ip->i_inode.i_mode);
 245         struct address_space *metamapping = gfs2_glock2aspace(gl);
 246         int error;
 247
 248         if (isreg) {
 249                 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
 250                         unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
 251                 inode_dio_wait(&ip->i_inode);
 252         }
 253         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 254                 goto out;
 255
 256         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 257
 258         gfs2_log_flush(gl->gl_name.ln_sbd, gl, GFS2_LOG_HEAD_FLUSH_NORMAL |
 259                        GFS2_LFC_INODE_GO_SYNC);
 260         filemap_fdatawrite(metamapping);
 261         if (isreg) {
 262                 struct address_space *mapping = ip->i_inode.i_mapping;
 263                 filemap_fdatawrite(mapping);
 264                 error = filemap_fdatawait(mapping);
 265                 mapping_set_error(mapping, error);
 266         }
 267         error = filemap_fdatawait(metamapping);
 268         mapping_set_error(metamapping, error);
 269         gfs2_ail_empty_gl(gl);
 270         /*
 271          * Writeback of the data mapping may cause the dirty flag to be set
 272          * so we have to clear it again here.
 273          */
 274         smp_mb__before_atomic();
 275         clear_bit(GLF_DIRTY, &gl->gl_flags);
 276
 277 out:
 278         gfs2_clear_glop_pending(ip);
 279 }
 280
 281 /**
 282  * inode_go_inval - prepare a inode glock to be released
 283  * @gl: the glock
 284  * @flags:
 285  *
 286  * Normally we invalidate everything, but if we are moving into
 287  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 288  * can keep hold of the metadata, since it won't have changed.
 289  *
 290  */
 291
 292 static void inode_go_inval(struct gfs2_glock *gl, int flags)
 293 {
 294         struct gfs2_inode *ip = gfs2_glock2inode(gl);
 295
 296         gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count));
 297
 298         if (flags & DIO_METADATA) {
 299                 struct address_space *mapping = gfs2_glock2aspace(gl);
 300                 truncate_inode_pages(mapping, 0);
 301                 if (ip) {
 302                         set_bit(GIF_INVALID, &ip->i_flags);
 303                         forget_all_cached_acls(&ip->i_inode);
 304                         security_inode_invalidate_secctx(&ip->i_inode);
 305                         gfs2_dir_hash_inval(ip);
 306                 }
 307         }
 308
 309         if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
 310                 gfs2_log_flush(gl->gl_name.ln_sbd, NULL,
 311                                GFS2_LOG_HEAD_FLUSH_NORMAL |
 312                                GFS2_LFC_INODE_GO_INVAL);
 313                 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
 314         }
 315         if (ip && S_ISREG(ip->i_inode.i_mode))
 316                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
 317
 318         gfs2_clear_glop_pending(ip);
 319 }
 320
 321 /**
 322  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 323  * @gl: the glock
 324  *
 325  * Returns: 1 if it's ok
 326  */
 327
 328 static int inode_go_demote_ok(const struct gfs2_glock *gl)
 329 {
 330         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 331
 332         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
 333                 return 0;
 334
 335         return 1;
 336 }
 337
 338 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 339 {
 340         const struct gfs2_dinode *str = buf;
 341         struct timespec atime;
 342         u16 height, depth;
 343
 344         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
 345                 goto corrupt;
 346         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 347         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 348         ip->i_inode.i_rdev = 0;
 349         switch (ip->i_inode.i_mode & S_IFMT) {
 350         case S_IFBLK:
 351         case S_IFCHR:
 352                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
 353                                            be32_to_cpu(str->di_minor));
 354                 break;
 355         };
 356
 357         i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
 358         i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
 359         set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
 360         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
 361         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
 362         atime.tv_sec = be64_to_cpu(str->di_atime);
 363         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
 364         if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
 365                 ip->i_inode.i_atime = atime;
 366         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
 367         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
 368         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
 369         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 370
 371         ip->i_goal = be64_to_cpu(str->di_goal_meta);
 372         ip->i_generation = be64_to_cpu(str->di_generation);
 373
 374         ip->i_diskflags = be32_to_cpu(str->di_flags);
 375         ip->i_eattr = be64_to_cpu(str->di_eattr);
 376         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
 377         gfs2_set_inode_flags(&ip->i_inode);
 378         height = be16_to_cpu(str->di_height);
 379         if (unlikely(height > GFS2_MAX_META_HEIGHT))
 380                 goto corrupt;
 381         ip->i_height = (u8)height;
 382
 383         depth = be16_to_cpu(str->di_depth);
 384         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
 385                 goto corrupt;
 386         ip->i_depth = (u8)depth;
 387         ip->i_entries = be32_to_cpu(str->di_entries);
 388
 389         if (S_ISREG(ip->i_inode.i_mode))
 390                 gfs2_set_aops(&ip->i_inode);
 391
 392         return 0;
 393 corrupt:
 394         gfs2_consist_inode(ip);
 395         return -EIO;
 396 }
 397
 398 /**
 399  * gfs2_inode_refresh - Refresh the incore copy of the dinode
 400  * @ip: The GFS2 inode
 401  *
 402  * Returns: errno
 403  */
 404
 405 int gfs2_inode_refresh(struct gfs2_inode *ip)
 406 {
 407         struct buffer_head *dibh;
 408         int error;
 409
 410         error = gfs2_meta_inode_buffer(ip, &dibh);
 411         if (error)
 412                 return error;
 413
 414         error = gfs2_dinode_in(ip, dibh->b_data);
 415         brelse(dibh);
 416         clear_bit(GIF_INVALID, &ip->i_flags);
 417
 418         return error;
 419 }
 420
 421 /**
 422  * inode_go_lock - operation done after an inode lock is locked by a process
 423  * @gl: the glock
 424  * @flags:
 425  *
 426  * Returns: errno
 427  */
 428
 429 static int inode_go_lock(struct gfs2_holder *gh)
 430 {
 431         struct gfs2_glock *gl = gh->gh_gl;
 432         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 433         struct gfs2_inode *ip = gl->gl_object;
 434         int error = 0;
 435
 436         if (!ip || (gh->gh_flags & GL_SKIP))
 437                 return 0;
 438
 439         if (test_bit(GIF_INVALID, &ip->i_flags)) {
 440                 error = gfs2_inode_refresh(ip);
 441                 if (error)
 442                         return error;
 443         }
 444
 445         if (gh->gh_state != LM_ST_DEFERRED)
 446                 inode_dio_wait(&ip->i_inode);
 447
 448         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
 449             (gl->gl_state == LM_ST_EXCLUSIVE) &&
 450             (gh->gh_state == LM_ST_EXCLUSIVE)) {
 451                 spin_lock(&sdp->sd_trunc_lock);
 452                 if (list_empty(&ip->i_trunc_list))
 453                         list_add(&ip->i_trunc_list, &sdp->sd_trunc_list);
 454                 spin_unlock(&sdp->sd_trunc_lock);
 455                 wake_up(&sdp->sd_quota_wait);
 456                 return 1;
 457         }
 458
 459         return error;
 460 }
 461
 462 /**
 463  * inode_go_dump - print information about an inode
 464  * @seq: The iterator
 465  * @ip: the inode
 466  *
 467  */
 468
 469 static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
 470 {
 471         const struct gfs2_inode *ip = gl->gl_object;
 472         if (ip == NULL)
 473                 return;
 474         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
 475                   (unsigned long long)ip->i_no_formal_ino,
 476                   (unsigned long long)ip->i_no_addr,
 477                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
 478                   (unsigned int)ip->i_diskflags,
 479                   (unsigned long long)i_size_read(&ip->i_inode));
 480 }
 481
 482 /**
 483  * freeze_go_sync - promote/demote the freeze glock
 484  * @gl: the glock
 485  * @state: the requested state
 486  * @flags:
 487  *
 488  */
 489
 490 static void freeze_go_sync(struct gfs2_glock *gl)
 491 {
 492         int error = 0;
 493         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 494
 495         if (gl->gl_state == LM_ST_SHARED &&
 496             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 497                 atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
 498                 error = freeze_super(sdp->sd_vfs);
 499                 if (error) {
 500                         printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error);
 501                         gfs2_assert_withdraw(sdp, 0);
 502                 }
 503                 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
 504                 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_FREEZE |
 505                                GFS2_LFC_FREEZE_GO_SYNC);
 506         }
 507 }
 508
 509 /**
 510  * freeze_go_xmote_bh - After promoting/demoting the freeze glock
 511  * @gl: the glock
 512  *
 513  */
 514
 515 static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 516 {
 517         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 518         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 519         struct gfs2_glock *j_gl = ip->i_gl;
 520         struct gfs2_log_header_host head;
 521         int error;
 522
 523         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 524                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
 525
 526                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
 527                 if (error)
 528                         gfs2_consist(sdp);
 529                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
 530                         gfs2_consist(sdp);
 531
 532                 /*  Initialize some head of the log stuff  */
 533                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
 534                         sdp->sd_log_sequence = head.lh_sequence + 1;
 535                         gfs2_log_pointers_init(sdp, head.lh_blkno);
 536                 }
 537         }
 538         return 0;
 539 }
 540
 541 /**
 542  * trans_go_demote_ok
 543  * @gl: the glock
 544  *
 545  * Always returns 0
 546  */
 547
 548 static int freeze_go_demote_ok(const struct gfs2_glock *gl)
 549 {
 550         return 0;
 551 }
 552
 553 /**
 554  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 555  * @gl: the glock
 556  *
 557  * gl_lockref.lock lock is held while calling this
 558  */
 559 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
 560 {
 561         struct gfs2_inode *ip = gl->gl_object;
 562         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 563
 564         if (!remote || sb_rdonly(sdp->sd_vfs))
 565                 return;
 566
 567         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 568             gl->gl_state == LM_ST_SHARED && ip) {
 569                 gl->gl_lockref.count++;
 570                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
 571                         gl->gl_lockref.count--;
 572         }
 573 }
 574
 575 const struct gfs2_glock_operations gfs2_meta_glops = {
 576         .go_type = LM_TYPE_META,
 577 };
 578
 579 const struct gfs2_glock_operations gfs2_inode_glops = {
 580         .go_sync = inode_go_sync,
 581         .go_inval = inode_go_inval,
 582         .go_demote_ok = inode_go_demote_ok,
 583         .go_lock = inode_go_lock,
 584         .go_dump = inode_go_dump,
 585         .go_type = LM_TYPE_INODE,
 586         .go_flags = GLOF_ASPACE | GLOF_LRU,
 587 };
 588
 589 const struct gfs2_glock_operations gfs2_rgrp_glops = {
 590         .go_sync = rgrp_go_sync,
 591         .go_inval = rgrp_go_inval,
 592         .go_lock = gfs2_rgrp_go_lock,
 593         .go_unlock = gfs2_rgrp_go_unlock,
 594         .go_dump = gfs2_rgrp_dump,
 595         .go_type = LM_TYPE_RGRP,
 596         .go_flags = GLOF_LVB,
 597 };
 598
 599 const struct gfs2_glock_operations gfs2_freeze_glops = {
 600         .go_sync = freeze_go_sync,
 601         .go_xmote_bh = freeze_go_xmote_bh,
 602         .go_demote_ok = freeze_go_demote_ok,
 603         .go_type = LM_TYPE_NONDISK,
 604 };
 605
 606 const struct gfs2_glock_operations gfs2_iopen_glops = {
 607         .go_type = LM_TYPE_IOPEN,
 608         .go_callback = iopen_go_callback,
 609         .go_flags = GLOF_LRU,
 610 };
 611
 612 const struct gfs2_glock_operations gfs2_flock_glops = {
 613         .go_type = LM_TYPE_FLOCK,
 614         .go_flags = GLOF_LRU,
 615 };
 616
 617 const struct gfs2_glock_operations gfs2_nondisk_glops = {
 618         .go_type = LM_TYPE_NONDISK,
 619 };
 620
 621 const struct gfs2_glock_operations gfs2_quota_glops = {
 622         .go_type = LM_TYPE_QUOTA,
 623         .go_flags = GLOF_LVB | GLOF_LRU,
 624 };
 625
 626 const struct gfs2_glock_operations gfs2_journal_glops = {
 627         .go_type = LM_TYPE_JOURNAL,
 628 };
 629
 630 const struct gfs2_glock_operations *gfs2_glops_list[] = {
 631         [LM_TYPE_META] = &gfs2_meta_glops,
 632         [LM_TYPE_INODE] = &gfs2_inode_glops,
 633         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
 634         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
 635         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
 636         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
 637         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
 638         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
 639 };
 640