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 #include "lops.h"
  32
  33 struct workqueue_struct *gfs2_freeze_wq;
  34
  35 static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
  36 {
  37         fs_err(gl->gl_name.ln_sbd,
  38                "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page "
  39                "state 0x%lx\n",
  40                bh, (unsigned long long)bh->b_blocknr, bh->b_state,
  41                bh->b_page->mapping, bh->b_page->flags);
  42         fs_err(gl->gl_name.ln_sbd, "AIL glock %u:%llu mapping %p\n",
  43                gl->gl_name.ln_type, gl->gl_name.ln_number,
  44                gfs2_glock2aspace(gl));
  45         gfs2_lm_withdraw(gl->gl_name.ln_sbd, "AIL error\n");
  46 }
  47
  48 /**
  49  * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
  50  * @gl: the glock
  51  * @fsync: set when called from fsync (not all buffers will be clean)
  52  *
  53  * None of the buffers should be dirty, locked, or pinned.
  54  */
  55
  56 static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
  57                              unsigned int nr_revokes)
  58 {
  59         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
  60         struct list_head *head = &gl->gl_ail_list;
  61         struct gfs2_bufdata *bd, *tmp;
  62         struct buffer_head *bh;
  63         const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
  64
  65         gfs2_log_lock(sdp);
  66         spin_lock(&sdp->sd_ail_lock);
  67         list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
  68                 if (nr_revokes == 0)
  69                         break;
  70                 bh = bd->bd_bh;
  71                 if (bh->b_state & b_state) {
  72                         if (fsync)
  73                                 continue;
  74                         gfs2_ail_error(gl, bh);
  75                 }
  76                 gfs2_trans_add_revoke(sdp, bd);
  77                 nr_revokes--;
  78         }
  79         GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
  80         spin_unlock(&sdp->sd_ail_lock);
  81         gfs2_log_unlock(sdp);
  82 }
  83
  84
  85 static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
  86 {
  87         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
  88         struct gfs2_trans tr;
  89
  90         memset(&tr, 0, sizeof(tr));
  91         INIT_LIST_HEAD(&tr.tr_buf);
  92         INIT_LIST_HEAD(&tr.tr_databuf);
  93         tr.tr_revokes = atomic_read(&gl->gl_ail_count);
  94
  95         if (!tr.tr_revokes)
  96                 return;
  97
  98         /* A shortened, inline version of gfs2_trans_begin()
  99          * tr->alloced is not set since the transaction structure is
 100          * on the stack */
 101         tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
 102         tr.tr_ip = _RET_IP_;
 103         if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0)
 104                 return;
 105         WARN_ON_ONCE(current->journal_info);
 106         current->journal_info = &tr;
 107
 108         __gfs2_ail_flush(gl, 0, tr.tr_revokes);
 109
 110         gfs2_trans_end(sdp);
 111         gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL |
 112                        GFS2_LFC_AIL_EMPTY_GL);
 113 }
 114
 115 void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
 116 {
 117         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 118         unsigned int revokes = atomic_read(&gl->gl_ail_count);
 119         unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64);
 120         int ret;
 121
 122         if (!revokes)
 123                 return;
 124
 125         while (revokes > max_revokes)
 126                 max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64);
 127
 128         ret = gfs2_trans_begin(sdp, 0, max_revokes);
 129         if (ret)
 130                 return;
 131         __gfs2_ail_flush(gl, fsync, max_revokes);
 132         gfs2_trans_end(sdp);
 133         gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL |
 134                        GFS2_LFC_AIL_FLUSH);
 135 }
 136
 137 /**
 138  * rgrp_go_sync - sync out the metadata for this glock
 139  * @gl: the glock
 140  *
 141  * Called when demoting or unlocking an EX glock.  We must flush
 142  * to disk all dirty buffers/pages relating to this glock, and must not
 143  * return to caller to demote/unlock the glock until I/O is complete.
 144  */
 145
 146 static void rgrp_go_sync(struct gfs2_glock *gl)
 147 {
 148         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 149         struct address_space *mapping = &sdp->sd_aspace;
 150         struct gfs2_rgrpd *rgd;
 151         int error;
 152
 153         spin_lock(&gl->gl_lockref.lock);
 154         rgd = gl->gl_object;
 155         if (rgd)
 156                 gfs2_rgrp_brelse(rgd);
 157         spin_unlock(&gl->gl_lockref.lock);
 158
 159         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 160                 return;
 161         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 162
 163         gfs2_log_flush(sdp, gl, GFS2_LOG_HEAD_FLUSH_NORMAL |
 164                        GFS2_LFC_RGRP_GO_SYNC);
 165         filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 166         error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 167         mapping_set_error(mapping, error);
 168         gfs2_ail_empty_gl(gl);
 169
 170         spin_lock(&gl->gl_lockref.lock);
 171         rgd = gl->gl_object;
 172         if (rgd)
 173                 gfs2_free_clones(rgd);
 174         spin_unlock(&gl->gl_lockref.lock);
 175 }
 176
 177 /**
 178  * rgrp_go_inval - invalidate the metadata for this glock
 179  * @gl: the glock
 180  * @flags:
 181  *
 182  * We never used LM_ST_DEFERRED with resource groups, so that we
 183  * should always see the metadata flag set here.
 184  *
 185  */
 186
 187 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
 188 {
 189         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 190         struct address_space *mapping = &sdp->sd_aspace;
 191         struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
 192
 193         if (rgd)
 194                 gfs2_rgrp_brelse(rgd);
 195
 196         WARN_ON_ONCE(!(flags & DIO_METADATA));
 197         gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
 198         truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
 199
 200         if (rgd)
 201                 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
 202 }
 203
 204 static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl)
 205 {
 206         struct gfs2_inode *ip;
 207
 208         spin_lock(&gl->gl_lockref.lock);
 209         ip = gl->gl_object;
 210         if (ip)
 211                 set_bit(GIF_GLOP_PENDING, &ip->i_flags);
 212         spin_unlock(&gl->gl_lockref.lock);
 213         return ip;
 214 }
 215
 216 struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl)
 217 {
 218         struct gfs2_rgrpd *rgd;
 219
 220         spin_lock(&gl->gl_lockref.lock);
 221         rgd = gl->gl_object;
 222         spin_unlock(&gl->gl_lockref.lock);
 223
 224         return rgd;
 225 }
 226
 227 static void gfs2_clear_glop_pending(struct gfs2_inode *ip)
 228 {
 229         if (!ip)
 230                 return;
 231
 232         clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags);
 233         wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING);
 234 }
 235
 236 /**
 237  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
 238  * @gl: the glock protecting the inode
 239  *
 240  */
 241
 242 static void inode_go_sync(struct gfs2_glock *gl)
 243 {
 244         struct gfs2_inode *ip = gfs2_glock2inode(gl);
 245         int isreg = ip && S_ISREG(ip->i_inode.i_mode);
 246         struct address_space *metamapping = gfs2_glock2aspace(gl);
 247         int error;
 248
 249         if (isreg) {
 250                 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
 251                         unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
 252                 inode_dio_wait(&ip->i_inode);
 253         }
 254         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
 255                 goto out;
 256
 257         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
 258
 259         gfs2_log_flush(gl->gl_name.ln_sbd, gl, GFS2_LOG_HEAD_FLUSH_NORMAL |
 260                        GFS2_LFC_INODE_GO_SYNC);
 261         filemap_fdatawrite(metamapping);
 262         if (isreg) {
 263                 struct address_space *mapping = ip->i_inode.i_mapping;
 264                 filemap_fdatawrite(mapping);
 265                 error = filemap_fdatawait(mapping);
 266                 mapping_set_error(mapping, error);
 267         }
 268         error = filemap_fdatawait(metamapping);
 269         mapping_set_error(metamapping, error);
 270         gfs2_ail_empty_gl(gl);
 271         /*
 272          * Writeback of the data mapping may cause the dirty flag to be set
 273          * so we have to clear it again here.
 274          */
 275         smp_mb__before_atomic();
 276         clear_bit(GLF_DIRTY, &gl->gl_flags);
 277
 278 out:
 279         gfs2_clear_glop_pending(ip);
 280 }
 281
 282 /**
 283  * inode_go_inval - prepare a inode glock to be released
 284  * @gl: the glock
 285  * @flags:
 286  *
 287  * Normally we invalidate everything, but if we are moving into
 288  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
 289  * can keep hold of the metadata, since it won't have changed.
 290  *
 291  */
 292
 293 static void inode_go_inval(struct gfs2_glock *gl, int flags)
 294 {
 295         struct gfs2_inode *ip = gfs2_glock2inode(gl);
 296
 297         gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count));
 298
 299         if (flags & DIO_METADATA) {
 300                 struct address_space *mapping = gfs2_glock2aspace(gl);
 301                 truncate_inode_pages(mapping, 0);
 302                 if (ip) {
 303                         set_bit(GIF_INVALID, &ip->i_flags);
 304                         forget_all_cached_acls(&ip->i_inode);
 305                         security_inode_invalidate_secctx(&ip->i_inode);
 306                         gfs2_dir_hash_inval(ip);
 307                 }
 308         }
 309
 310         if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
 311                 gfs2_log_flush(gl->gl_name.ln_sbd, NULL,
 312                                GFS2_LOG_HEAD_FLUSH_NORMAL |
 313                                GFS2_LFC_INODE_GO_INVAL);
 314                 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
 315         }
 316         if (ip && S_ISREG(ip->i_inode.i_mode))
 317                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
 318
 319         gfs2_clear_glop_pending(ip);
 320 }
 321
 322 /**
 323  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
 324  * @gl: the glock
 325  *
 326  * Returns: 1 if it's ok
 327  */
 328
 329 static int inode_go_demote_ok(const struct gfs2_glock *gl)
 330 {
 331         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 332
 333         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
 334                 return 0;
 335
 336         return 1;
 337 }
 338
 339 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
 340 {
 341         const struct gfs2_dinode *str = buf;
 342         struct timespec64 atime;
 343         u16 height, depth;
 344
 345         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
 346                 goto corrupt;
 347         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
 348         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
 349         ip->i_inode.i_rdev = 0;
 350         switch (ip->i_inode.i_mode & S_IFMT) {
 351         case S_IFBLK:
 352         case S_IFCHR:
 353                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
 354                                            be32_to_cpu(str->di_minor));
 355                 break;
 356         };
 357
 358         i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
 359         i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
 360         set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
 361         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
 362         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
 363         atime.tv_sec = be64_to_cpu(str->di_atime);
 364         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
 365         if (timespec64_compare(&ip->i_inode.i_atime, &atime) < 0)
 366                 ip->i_inode.i_atime = atime;
 367         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
 368         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
 369         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
 370         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
 371
 372         ip->i_goal = be64_to_cpu(str->di_goal_meta);
 373         ip->i_generation = be64_to_cpu(str->di_generation);
 374
 375         ip->i_diskflags = be32_to_cpu(str->di_flags);
 376         ip->i_eattr = be64_to_cpu(str->di_eattr);
 377         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
 378         gfs2_set_inode_flags(&ip->i_inode);
 379         height = be16_to_cpu(str->di_height);
 380         if (unlikely(height > GFS2_MAX_META_HEIGHT))
 381                 goto corrupt;
 382         ip->i_height = (u8)height;
 383
 384         depth = be16_to_cpu(str->di_depth);
 385         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
 386                 goto corrupt;
 387         ip->i_depth = (u8)depth;
 388         ip->i_entries = be32_to_cpu(str->di_entries);
 389
 390         if (S_ISREG(ip->i_inode.i_mode))
 391                 gfs2_set_aops(&ip->i_inode);
 392
 393         return 0;
 394 corrupt:
 395         gfs2_consist_inode(ip);
 396         return -EIO;
 397 }
 398
 399 /**
 400  * gfs2_inode_refresh - Refresh the incore copy of the dinode
 401  * @ip: The GFS2 inode
 402  *
 403  * Returns: errno
 404  */
 405
 406 int gfs2_inode_refresh(struct gfs2_inode *ip)
 407 {
 408         struct buffer_head *dibh;
 409         int error;
 410
 411         error = gfs2_meta_inode_buffer(ip, &dibh);
 412         if (error)
 413                 return error;
 414
 415         error = gfs2_dinode_in(ip, dibh->b_data);
 416         brelse(dibh);
 417         clear_bit(GIF_INVALID, &ip->i_flags);
 418
 419         return error;
 420 }
 421
 422 /**
 423  * inode_go_lock - operation done after an inode lock is locked by a process
 424  * @gl: the glock
 425  * @flags:
 426  *
 427  * Returns: errno
 428  */
 429
 430 static int inode_go_lock(struct gfs2_holder *gh)
 431 {
 432         struct gfs2_glock *gl = gh->gh_gl;
 433         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 434         struct gfs2_inode *ip = gl->gl_object;
 435         int error = 0;
 436
 437         if (!ip || (gh->gh_flags & GL_SKIP))
 438                 return 0;
 439
 440         if (test_bit(GIF_INVALID, &ip->i_flags)) {
 441                 error = gfs2_inode_refresh(ip);
 442                 if (error)
 443                         return error;
 444         }
 445
 446         if (gh->gh_state != LM_ST_DEFERRED)
 447                 inode_dio_wait(&ip->i_inode);
 448
 449         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
 450             (gl->gl_state == LM_ST_EXCLUSIVE) &&
 451             (gh->gh_state == LM_ST_EXCLUSIVE)) {
 452                 spin_lock(&sdp->sd_trunc_lock);
 453                 if (list_empty(&ip->i_trunc_list))
 454                         list_add(&ip->i_trunc_list, &sdp->sd_trunc_list);
 455                 spin_unlock(&sdp->sd_trunc_lock);
 456                 wake_up(&sdp->sd_quota_wait);
 457                 return 1;
 458         }
 459
 460         return error;
 461 }
 462
 463 /**
 464  * inode_go_dump - print information about an inode
 465  * @seq: The iterator
 466  * @ip: the inode
 467  *
 468  */
 469
 470 static void inode_go_dump(struct seq_file *seq, struct gfs2_glock *gl)
 471 {
 472         struct gfs2_inode *ip = gl->gl_object;
 473         struct inode *inode = &ip->i_inode;
 474         unsigned long nrpages;
 475
 476         if (ip == NULL)
 477                 return;
 478
 479         xa_lock_irq(&inode->i_data.i_pages);
 480         nrpages = inode->i_data.nrpages;
 481         xa_unlock_irq(&inode->i_data.i_pages);
 482
 483         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu p:%lu\n",
 484                   (unsigned long long)ip->i_no_formal_ino,
 485                   (unsigned long long)ip->i_no_addr,
 486                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
 487                   (unsigned int)ip->i_diskflags,
 488                   (unsigned long long)i_size_read(inode), nrpages);
 489 }
 490
 491 /**
 492  * freeze_go_sync - promote/demote the freeze glock
 493  * @gl: the glock
 494  * @state: the requested state
 495  * @flags:
 496  *
 497  */
 498
 499 static void freeze_go_sync(struct gfs2_glock *gl)
 500 {
 501         int error = 0;
 502         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 503
 504         if (gl->gl_state == LM_ST_SHARED &&
 505             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 506                 atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
 507                 error = freeze_super(sdp->sd_vfs);
 508                 if (error) {
 509                         printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error);
 510                         gfs2_assert_withdraw(sdp, 0);
 511                 }
 512                 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
 513                 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_FREEZE |
 514                                GFS2_LFC_FREEZE_GO_SYNC);
 515         }
 516 }
 517
 518 /**
 519  * freeze_go_xmote_bh - After promoting/demoting the freeze glock
 520  * @gl: the glock
 521  *
 522  */
 523
 524 static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
 525 {
 526         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 527         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
 528         struct gfs2_glock *j_gl = ip->i_gl;
 529         struct gfs2_log_header_host head;
 530         int error;
 531
 532         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
 533                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
 534
 535                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
 536                 if (error)
 537                         gfs2_consist(sdp);
 538                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
 539                         gfs2_consist(sdp);
 540
 541                 /*  Initialize some head of the log stuff  */
 542                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
 543                         sdp->sd_log_sequence = head.lh_sequence + 1;
 544                         gfs2_log_pointers_init(sdp, head.lh_blkno);
 545                 }
 546         }
 547         return 0;
 548 }
 549
 550 /**
 551  * trans_go_demote_ok
 552  * @gl: the glock
 553  *
 554  * Always returns 0
 555  */
 556
 557 static int freeze_go_demote_ok(const struct gfs2_glock *gl)
 558 {
 559         return 0;
 560 }
 561
 562 /**
 563  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
 564  * @gl: the glock
 565  *
 566  * gl_lockref.lock lock is held while calling this
 567  */
 568 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
 569 {
 570         struct gfs2_inode *ip = gl->gl_object;
 571         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
 572
 573         if (!remote || sb_rdonly(sdp->sd_vfs))
 574                 return;
 575
 576         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
 577             gl->gl_state == LM_ST_SHARED && ip) {
 578                 gl->gl_lockref.count++;
 579                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
 580                         gl->gl_lockref.count--;
 581         }
 582 }
 583
 584 const struct gfs2_glock_operations gfs2_meta_glops = {
 585         .go_type = LM_TYPE_META,
 586 };
 587
 588 const struct gfs2_glock_operations gfs2_inode_glops = {
 589         .go_sync = inode_go_sync,
 590         .go_inval = inode_go_inval,
 591         .go_demote_ok = inode_go_demote_ok,
 592         .go_lock = inode_go_lock,
 593         .go_dump = inode_go_dump,
 594         .go_type = LM_TYPE_INODE,
 595         .go_flags = GLOF_ASPACE | GLOF_LRU,
 596 };
 597
 598 const struct gfs2_glock_operations gfs2_rgrp_glops = {
 599         .go_sync = rgrp_go_sync,
 600         .go_inval = rgrp_go_inval,
 601         .go_lock = gfs2_rgrp_go_lock,
 602         .go_unlock = gfs2_rgrp_go_unlock,
 603         .go_dump = gfs2_rgrp_dump,
 604         .go_type = LM_TYPE_RGRP,
 605         .go_flags = GLOF_LVB,
 606 };
 607
 608 const struct gfs2_glock_operations gfs2_freeze_glops = {
 609         .go_sync = freeze_go_sync,
 610         .go_xmote_bh = freeze_go_xmote_bh,
 611         .go_demote_ok = freeze_go_demote_ok,
 612         .go_type = LM_TYPE_NONDISK,
 613 };
 614
 615 const struct gfs2_glock_operations gfs2_iopen_glops = {
 616         .go_type = LM_TYPE_IOPEN,
 617         .go_callback = iopen_go_callback,
 618         .go_flags = GLOF_LRU,
 619 };
 620
 621 const struct gfs2_glock_operations gfs2_flock_glops = {
 622         .go_type = LM_TYPE_FLOCK,
 623         .go_flags = GLOF_LRU,
 624 };
 625
 626 const struct gfs2_glock_operations gfs2_nondisk_glops = {
 627         .go_type = LM_TYPE_NONDISK,
 628 };
 629
 630 const struct gfs2_glock_operations gfs2_quota_glops = {
 631         .go_type = LM_TYPE_QUOTA,
 632         .go_flags = GLOF_LVB | GLOF_LRU,
 633 };
 634
 635 const struct gfs2_glock_operations gfs2_journal_glops = {
 636         .go_type = LM_TYPE_JOURNAL,
 637 };
 638
 639 const struct gfs2_glock_operations *gfs2_glops_list[] = {
 640         [LM_TYPE_META] = &gfs2_meta_glops,
 641         [LM_TYPE_INODE] = &gfs2_inode_glops,
 642         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
 643         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
 644         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
 645         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
 646         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
 647         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
 648 };
 649