1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved. 5 */ 6 7 #include <linux/spinlock.h> 8 #include <linux/completion.h> 9 #include <linux/buffer_head.h> 10 #include <linux/gfs2_ondisk.h> 11 #include <linux/bio.h> 12 #include <linux/posix_acl.h> 13 #include <linux/security.h> 14 15 #include "gfs2.h" 16 #include "incore.h" 17 #include "bmap.h" 18 #include "glock.h" 19 #include "glops.h" 20 #include "inode.h" 21 #include "log.h" 22 #include "meta_io.h" 23 #include "recovery.h" 24 #include "rgrp.h" 25 #include "util.h" 26 #include "trans.h" 27 #include "dir.h" 28 #include "lops.h" 29 30 struct workqueue_struct *gfs2_freeze_wq; 31 32 static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh) 33 { 34 fs_err(gl->gl_name.ln_sbd, 35 "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page " 36 "state 0x%lx\n", 37 bh, (unsigned long long)bh->b_blocknr, bh->b_state, 38 bh->b_page->mapping, bh->b_page->flags); 39 fs_err(gl->gl_name.ln_sbd, "AIL glock %u:%llu mapping %p\n", 40 gl->gl_name.ln_type, gl->gl_name.ln_number, 41 gfs2_glock2aspace(gl)); 42 gfs2_lm_withdraw(gl->gl_name.ln_sbd, "AIL error\n"); 43 } 44 45 /** 46 * __gfs2_ail_flush - remove all buffers for a given lock from the AIL 47 * @gl: the glock 48 * @fsync: set when called from fsync (not all buffers will be clean) 49 * 50 * None of the buffers should be dirty, locked, or pinned. 51 */ 52 53 static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync, 54 unsigned int nr_revokes) 55 { 56 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 57 struct list_head *head = &gl->gl_ail_list; 58 struct gfs2_bufdata *bd, *tmp; 59 struct buffer_head *bh; 60 const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock); 61 62 gfs2_log_lock(sdp); 63 spin_lock(&sdp->sd_ail_lock); 64 list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) { 65 if (nr_revokes == 0) 66 break; 67 bh = bd->bd_bh; 68 if (bh->b_state & b_state) { 69 if (fsync) 70 continue; 71 gfs2_ail_error(gl, bh); 72 } 73 gfs2_trans_add_revoke(sdp, bd); 74 nr_revokes--; 75 } 76 GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count)); 77 spin_unlock(&sdp->sd_ail_lock); 78 gfs2_log_unlock(sdp); 79 } 80 81 82 static void gfs2_ail_empty_gl(struct gfs2_glock *gl) 83 { 84 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 85 struct gfs2_trans tr; 86 87 memset(&tr, 0, sizeof(tr)); 88 INIT_LIST_HEAD(&tr.tr_buf); 89 INIT_LIST_HEAD(&tr.tr_databuf); 90 tr.tr_revokes = atomic_read(&gl->gl_ail_count); 91 92 if (!tr.tr_revokes) 93 return; 94 95 /* A shortened, inline version of gfs2_trans_begin() 96 * tr->alloced is not set since the transaction structure is 97 * on the stack */ 98 tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64)); 99 tr.tr_ip = _RET_IP_; 100 if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0) 101 return; 102 WARN_ON_ONCE(current->journal_info); 103 current->journal_info = &tr; 104 105 __gfs2_ail_flush(gl, 0, tr.tr_revokes); 106 107 gfs2_trans_end(sdp); 108 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL | 109 GFS2_LFC_AIL_EMPTY_GL); 110 } 111 112 void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync) 113 { 114 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 115 unsigned int revokes = atomic_read(&gl->gl_ail_count); 116 unsigned int max_revokes = (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_log_descriptor)) / sizeof(u64); 117 int ret; 118 119 if (!revokes) 120 return; 121 122 while (revokes > max_revokes) 123 max_revokes += (sdp->sd_sb.sb_bsize - sizeof(struct gfs2_meta_header)) / sizeof(u64); 124 125 ret = gfs2_trans_begin(sdp, 0, max_revokes); 126 if (ret) 127 return; 128 __gfs2_ail_flush(gl, fsync, max_revokes); 129 gfs2_trans_end(sdp); 130 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL | 131 GFS2_LFC_AIL_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, GFS2_LOG_HEAD_FLUSH_NORMAL | 161 GFS2_LFC_RGRP_GO_SYNC); 162 filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end); 163 error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end); 164 mapping_set_error(mapping, error); 165 gfs2_ail_empty_gl(gl); 166 167 spin_lock(&gl->gl_lockref.lock); 168 rgd = gl->gl_object; 169 if (rgd) 170 gfs2_free_clones(rgd); 171 spin_unlock(&gl->gl_lockref.lock); 172 } 173 174 /** 175 * rgrp_go_inval - invalidate the metadata for this glock 176 * @gl: the glock 177 * @flags: 178 * 179 * We never used LM_ST_DEFERRED with resource groups, so that we 180 * should always see the metadata flag set here. 181 * 182 */ 183 184 static void rgrp_go_inval(struct gfs2_glock *gl, int flags) 185 { 186 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 187 struct address_space *mapping = &sdp->sd_aspace; 188 struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); 189 190 if (rgd) 191 gfs2_rgrp_brelse(rgd); 192 193 WARN_ON_ONCE(!(flags & DIO_METADATA)); 194 gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count)); 195 truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end); 196 197 if (rgd) 198 rgd->rd_flags &= ~GFS2_RDF_UPTODATE; 199 } 200 201 static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl) 202 { 203 struct gfs2_inode *ip; 204 205 spin_lock(&gl->gl_lockref.lock); 206 ip = gl->gl_object; 207 if (ip) 208 set_bit(GIF_GLOP_PENDING, &ip->i_flags); 209 spin_unlock(&gl->gl_lockref.lock); 210 return ip; 211 } 212 213 struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl) 214 { 215 struct gfs2_rgrpd *rgd; 216 217 spin_lock(&gl->gl_lockref.lock); 218 rgd = gl->gl_object; 219 spin_unlock(&gl->gl_lockref.lock); 220 221 return rgd; 222 } 223 224 static void gfs2_clear_glop_pending(struct gfs2_inode *ip) 225 { 226 if (!ip) 227 return; 228 229 clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags); 230 wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING); 231 } 232 233 /** 234 * inode_go_sync - Sync the dirty data and/or metadata for an inode glock 235 * @gl: the glock protecting the inode 236 * 237 */ 238 239 static void inode_go_sync(struct gfs2_glock *gl) 240 { 241 struct gfs2_inode *ip = gfs2_glock2inode(gl); 242 int isreg = ip && S_ISREG(ip->i_inode.i_mode); 243 struct address_space *metamapping = gfs2_glock2aspace(gl); 244 int error; 245 246 if (isreg) { 247 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags)) 248 unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0); 249 inode_dio_wait(&ip->i_inode); 250 } 251 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags)) 252 goto out; 253 254 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE); 255 256 gfs2_log_flush(gl->gl_name.ln_sbd, gl, GFS2_LOG_HEAD_FLUSH_NORMAL | 257 GFS2_LFC_INODE_GO_SYNC); 258 filemap_fdatawrite(metamapping); 259 if (isreg) { 260 struct address_space *mapping = ip->i_inode.i_mapping; 261 filemap_fdatawrite(mapping); 262 error = filemap_fdatawait(mapping); 263 mapping_set_error(mapping, error); 264 } 265 error = filemap_fdatawait(metamapping); 266 mapping_set_error(metamapping, error); 267 gfs2_ail_empty_gl(gl); 268 /* 269 * Writeback of the data mapping may cause the dirty flag to be set 270 * so we have to clear it again here. 271 */ 272 smp_mb__before_atomic(); 273 clear_bit(GLF_DIRTY, &gl->gl_flags); 274 275 out: 276 gfs2_clear_glop_pending(ip); 277 } 278 279 /** 280 * inode_go_inval - prepare a inode glock to be released 281 * @gl: the glock 282 * @flags: 283 * 284 * Normally we invalidate everything, but if we are moving into 285 * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we 286 * can keep hold of the metadata, since it won't have changed. 287 * 288 */ 289 290 static void inode_go_inval(struct gfs2_glock *gl, int flags) 291 { 292 struct gfs2_inode *ip = gfs2_glock2inode(gl); 293 294 gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count)); 295 296 if (flags & DIO_METADATA) { 297 struct address_space *mapping = gfs2_glock2aspace(gl); 298 truncate_inode_pages(mapping, 0); 299 if (ip) { 300 set_bit(GIF_INVALID, &ip->i_flags); 301 forget_all_cached_acls(&ip->i_inode); 302 security_inode_invalidate_secctx(&ip->i_inode); 303 gfs2_dir_hash_inval(ip); 304 } 305 } 306 307 if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) { 308 gfs2_log_flush(gl->gl_name.ln_sbd, NULL, 309 GFS2_LOG_HEAD_FLUSH_NORMAL | 310 GFS2_LFC_INODE_GO_INVAL); 311 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0; 312 } 313 if (ip && S_ISREG(ip->i_inode.i_mode)) 314 truncate_inode_pages(ip->i_inode.i_mapping, 0); 315 316 gfs2_clear_glop_pending(ip); 317 } 318 319 /** 320 * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock 321 * @gl: the glock 322 * 323 * Returns: 1 if it's ok 324 */ 325 326 static int inode_go_demote_ok(const struct gfs2_glock *gl) 327 { 328 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 329 330 if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object) 331 return 0; 332 333 return 1; 334 } 335 336 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf) 337 { 338 const struct gfs2_dinode *str = buf; 339 struct timespec64 atime; 340 u16 height, depth; 341 342 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr))) 343 goto corrupt; 344 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino); 345 ip->i_inode.i_mode = be32_to_cpu(str->di_mode); 346 ip->i_inode.i_rdev = 0; 347 switch (ip->i_inode.i_mode & S_IFMT) { 348 case S_IFBLK: 349 case S_IFCHR: 350 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major), 351 be32_to_cpu(str->di_minor)); 352 break; 353 } 354 355 i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid)); 356 i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid)); 357 set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink)); 358 i_size_write(&ip->i_inode, be64_to_cpu(str->di_size)); 359 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks)); 360 atime.tv_sec = be64_to_cpu(str->di_atime); 361 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec); 362 if (timespec64_compare(&ip->i_inode.i_atime, &atime) < 0) 363 ip->i_inode.i_atime = atime; 364 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime); 365 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec); 366 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime); 367 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec); 368 369 ip->i_goal = be64_to_cpu(str->di_goal_meta); 370 ip->i_generation = be64_to_cpu(str->di_generation); 371 372 ip->i_diskflags = be32_to_cpu(str->di_flags); 373 ip->i_eattr = be64_to_cpu(str->di_eattr); 374 /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */ 375 gfs2_set_inode_flags(&ip->i_inode); 376 height = be16_to_cpu(str->di_height); 377 if (unlikely(height > GFS2_MAX_META_HEIGHT)) 378 goto corrupt; 379 ip->i_height = (u8)height; 380 381 depth = be16_to_cpu(str->di_depth); 382 if (unlikely(depth > GFS2_DIR_MAX_DEPTH)) 383 goto corrupt; 384 ip->i_depth = (u8)depth; 385 ip->i_entries = be32_to_cpu(str->di_entries); 386 387 if (S_ISREG(ip->i_inode.i_mode)) 388 gfs2_set_aops(&ip->i_inode); 389 390 return 0; 391 corrupt: 392 gfs2_consist_inode(ip); 393 return -EIO; 394 } 395 396 /** 397 * gfs2_inode_refresh - Refresh the incore copy of the dinode 398 * @ip: The GFS2 inode 399 * 400 * Returns: errno 401 */ 402 403 int gfs2_inode_refresh(struct gfs2_inode *ip) 404 { 405 struct buffer_head *dibh; 406 int error; 407 408 error = gfs2_meta_inode_buffer(ip, &dibh); 409 if (error) 410 return error; 411 412 error = gfs2_dinode_in(ip, dibh->b_data); 413 brelse(dibh); 414 clear_bit(GIF_INVALID, &ip->i_flags); 415 416 return error; 417 } 418 419 /** 420 * inode_go_lock - operation done after an inode lock is locked by a process 421 * @gl: the glock 422 * @flags: 423 * 424 * Returns: errno 425 */ 426 427 static int inode_go_lock(struct gfs2_holder *gh) 428 { 429 struct gfs2_glock *gl = gh->gh_gl; 430 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 431 struct gfs2_inode *ip = gl->gl_object; 432 int error = 0; 433 434 if (!ip || (gh->gh_flags & GL_SKIP)) 435 return 0; 436 437 if (test_bit(GIF_INVALID, &ip->i_flags)) { 438 error = gfs2_inode_refresh(ip); 439 if (error) 440 return error; 441 } 442 443 if (gh->gh_state != LM_ST_DEFERRED) 444 inode_dio_wait(&ip->i_inode); 445 446 if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) && 447 (gl->gl_state == LM_ST_EXCLUSIVE) && 448 (gh->gh_state == LM_ST_EXCLUSIVE)) { 449 spin_lock(&sdp->sd_trunc_lock); 450 if (list_empty(&ip->i_trunc_list)) 451 list_add(&ip->i_trunc_list, &sdp->sd_trunc_list); 452 spin_unlock(&sdp->sd_trunc_lock); 453 wake_up(&sdp->sd_quota_wait); 454 return 1; 455 } 456 457 return error; 458 } 459 460 /** 461 * inode_go_dump - print information about an inode 462 * @seq: The iterator 463 * @ip: the inode 464 * @fs_id_buf: file system id (may be empty) 465 * 466 */ 467 468 static void inode_go_dump(struct seq_file *seq, struct gfs2_glock *gl, 469 const char *fs_id_buf) 470 { 471 struct gfs2_inode *ip = gl->gl_object; 472 struct inode *inode = &ip->i_inode; 473 unsigned long nrpages; 474 475 if (ip == NULL) 476 return; 477 478 xa_lock_irq(&inode->i_data.i_pages); 479 nrpages = inode->i_data.nrpages; 480 xa_unlock_irq(&inode->i_data.i_pages); 481 482 gfs2_print_dbg(seq, "%s I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu " 483 "p:%lu\n", fs_id_buf, 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 fs_info(sdp, "GFS2: couldn't freeze filesystem: %d\n", 510 error); 511 gfs2_assert_withdraw(sdp, 0); 512 } 513 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work); 514 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_FREEZE | 515 GFS2_LFC_FREEZE_GO_SYNC); 516 } 517 } 518 519 /** 520 * freeze_go_xmote_bh - After promoting/demoting the freeze glock 521 * @gl: the glock 522 * 523 */ 524 525 static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh) 526 { 527 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 528 struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode); 529 struct gfs2_glock *j_gl = ip->i_gl; 530 struct gfs2_log_header_host head; 531 int error; 532 533 if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) { 534 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA); 535 536 error = gfs2_find_jhead(sdp->sd_jdesc, &head, false); 537 if (error) 538 gfs2_consist(sdp); 539 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT)) 540 gfs2_consist(sdp); 541 542 /* Initialize some head of the log stuff */ 543 if (!gfs2_withdrawn(sdp)) { 544 sdp->sd_log_sequence = head.lh_sequence + 1; 545 gfs2_log_pointers_init(sdp, head.lh_blkno); 546 } 547 } 548 return 0; 549 } 550 551 /** 552 * trans_go_demote_ok 553 * @gl: the glock 554 * 555 * Always returns 0 556 */ 557 558 static int freeze_go_demote_ok(const struct gfs2_glock *gl) 559 { 560 return 0; 561 } 562 563 /** 564 * iopen_go_callback - schedule the dcache entry for the inode to be deleted 565 * @gl: the glock 566 * 567 * gl_lockref.lock lock is held while calling this 568 */ 569 static void iopen_go_callback(struct gfs2_glock *gl, bool remote) 570 { 571 struct gfs2_inode *ip = gl->gl_object; 572 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 573 574 if (!remote || sb_rdonly(sdp->sd_vfs)) 575 return; 576 577 if (gl->gl_demote_state == LM_ST_UNLOCKED && 578 gl->gl_state == LM_ST_SHARED && ip) { 579 gl->gl_lockref.count++; 580 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0) 581 gl->gl_lockref.count--; 582 } 583 } 584 585 const struct gfs2_glock_operations gfs2_meta_glops = { 586 .go_type = LM_TYPE_META, 587 }; 588 589 const struct gfs2_glock_operations gfs2_inode_glops = { 590 .go_sync = inode_go_sync, 591 .go_inval = inode_go_inval, 592 .go_demote_ok = inode_go_demote_ok, 593 .go_lock = inode_go_lock, 594 .go_dump = inode_go_dump, 595 .go_type = LM_TYPE_INODE, 596 .go_flags = GLOF_ASPACE | GLOF_LRU, 597 }; 598 599 const struct gfs2_glock_operations gfs2_rgrp_glops = { 600 .go_sync = rgrp_go_sync, 601 .go_inval = rgrp_go_inval, 602 .go_lock = gfs2_rgrp_go_lock, 603 .go_unlock = gfs2_rgrp_go_unlock, 604 .go_dump = gfs2_rgrp_dump, 605 .go_type = LM_TYPE_RGRP, 606 .go_flags = GLOF_LVB, 607 }; 608 609 const struct gfs2_glock_operations gfs2_freeze_glops = { 610 .go_sync = freeze_go_sync, 611 .go_xmote_bh = freeze_go_xmote_bh, 612 .go_demote_ok = freeze_go_demote_ok, 613 .go_type = LM_TYPE_NONDISK, 614 }; 615 616 const struct gfs2_glock_operations gfs2_iopen_glops = { 617 .go_type = LM_TYPE_IOPEN, 618 .go_callback = iopen_go_callback, 619 .go_flags = GLOF_LRU, 620 }; 621 622 const struct gfs2_glock_operations gfs2_flock_glops = { 623 .go_type = LM_TYPE_FLOCK, 624 .go_flags = GLOF_LRU, 625 }; 626 627 const struct gfs2_glock_operations gfs2_nondisk_glops = { 628 .go_type = LM_TYPE_NONDISK, 629 }; 630 631 const struct gfs2_glock_operations gfs2_quota_glops = { 632 .go_type = LM_TYPE_QUOTA, 633 .go_flags = GLOF_LVB | GLOF_LRU, 634 }; 635 636 const struct gfs2_glock_operations gfs2_journal_glops = { 637 .go_type = LM_TYPE_JOURNAL, 638 }; 639 640 const struct gfs2_glock_operations *gfs2_glops_list[] = { 641 [LM_TYPE_META] = &gfs2_meta_glops, 642 [LM_TYPE_INODE] = &gfs2_inode_glops, 643 [LM_TYPE_RGRP] = &gfs2_rgrp_glops, 644 [LM_TYPE_IOPEN] = &gfs2_iopen_glops, 645 [LM_TYPE_FLOCK] = &gfs2_flock_glops, 646 [LM_TYPE_NONDISK] = &gfs2_nondisk_glops, 647 [LM_TYPE_QUOTA] = &gfs2_quota_glops, 648 [LM_TYPE_JOURNAL] = &gfs2_journal_glops, 649 }; 650 651