1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
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>
30 struct workqueue_struct *gfs2_freeze_wq;
32 extern struct workqueue_struct *gfs2_control_wq;
34 static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
36 fs_err(gl->gl_name.ln_sbd,
37 "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page "
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(gl->gl_name.ln_sbd, "AIL error\n");
45 gfs2_withdraw(gl->gl_name.ln_sbd);
49 * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
51 * @fsync: set when called from fsync (not all buffers will be clean)
53 * None of the buffers should be dirty, locked, or pinned.
56 static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
57 unsigned int nr_revokes)
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);
66 spin_lock(&sdp->sd_ail_lock);
67 list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
71 if (bh->b_state & b_state) {
74 gfs2_ail_error(gl, bh);
76 gfs2_trans_add_revoke(sdp, bd);
79 GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
80 spin_unlock(&sdp->sd_ail_lock);
85 static int gfs2_ail_empty_gl(struct gfs2_glock *gl)
87 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
92 revokes = atomic_read(&gl->gl_ail_count);
99 * We have nothing on the ail, but there could be revokes on
100 * the sdp revoke queue, in which case, we still want to flush
101 * the log and wait for it to finish.
103 * If the sdp revoke list is empty too, we might still have an
104 * io outstanding for writing revokes, so we should wait for
105 * it before returning.
107 * If none of these conditions are true, our revokes are all
108 * flushed and we can return.
111 have_revokes = !list_empty(&sdp->sd_log_revokes);
112 log_in_flight = atomic_read(&sdp->sd_log_in_flight);
113 gfs2_log_unlock(sdp);
121 memset(&tr, 0, sizeof(tr));
122 set_bit(TR_ONSTACK, &tr.tr_flags);
123 ret = __gfs2_trans_begin(&tr, sdp, 0, revokes, _RET_IP_);
126 __gfs2_ail_flush(gl, 0, revokes);
130 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL |
131 GFS2_LFC_AIL_EMPTY_GL);
135 void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
137 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
138 unsigned int revokes = atomic_read(&gl->gl_ail_count);
144 ret = gfs2_trans_begin(sdp, 0, revokes);
147 __gfs2_ail_flush(gl, fsync, revokes);
149 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL |
154 * gfs2_rgrp_metasync - sync out the metadata of a resource group
155 * @gl: the glock protecting the resource group
159 static int gfs2_rgrp_metasync(struct gfs2_glock *gl)
161 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
162 struct address_space *metamapping = &sdp->sd_aspace;
163 struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
164 const unsigned bsize = sdp->sd_sb.sb_bsize;
165 loff_t start = (rgd->rd_addr * bsize) & PAGE_MASK;
166 loff_t end = PAGE_ALIGN((rgd->rd_addr + rgd->rd_length) * bsize) - 1;
169 filemap_fdatawrite_range(metamapping, start, end);
170 error = filemap_fdatawait_range(metamapping, start, end);
171 WARN_ON_ONCE(error && !gfs2_withdrawn(sdp));
172 mapping_set_error(metamapping, error);
179 * rgrp_go_sync - sync out the metadata for this glock
182 * Called when demoting or unlocking an EX glock. We must flush
183 * to disk all dirty buffers/pages relating to this glock, and must not
184 * return to caller to demote/unlock the glock until I/O is complete.
187 static int rgrp_go_sync(struct gfs2_glock *gl)
189 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
190 struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
193 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
195 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
197 gfs2_log_flush(sdp, gl, GFS2_LOG_HEAD_FLUSH_NORMAL |
198 GFS2_LFC_RGRP_GO_SYNC);
199 error = gfs2_rgrp_metasync(gl);
201 error = gfs2_ail_empty_gl(gl);
202 gfs2_free_clones(rgd);
207 * rgrp_go_inval - invalidate the metadata for this glock
211 * We never used LM_ST_DEFERRED with resource groups, so that we
212 * should always see the metadata flag set here.
216 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
218 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
219 struct address_space *mapping = &sdp->sd_aspace;
220 struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
221 const unsigned bsize = sdp->sd_sb.sb_bsize;
222 loff_t start = (rgd->rd_addr * bsize) & PAGE_MASK;
223 loff_t end = PAGE_ALIGN((rgd->rd_addr + rgd->rd_length) * bsize) - 1;
225 gfs2_rgrp_brelse(rgd);
226 WARN_ON_ONCE(!(flags & DIO_METADATA));
227 truncate_inode_pages_range(mapping, start, end);
228 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
231 static void gfs2_rgrp_go_dump(struct seq_file *seq, struct gfs2_glock *gl,
232 const char *fs_id_buf)
234 struct gfs2_rgrpd *rgd = gl->gl_object;
237 gfs2_rgrp_dump(seq, rgd, fs_id_buf);
240 static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl)
242 struct gfs2_inode *ip;
244 spin_lock(&gl->gl_lockref.lock);
247 set_bit(GIF_GLOP_PENDING, &ip->i_flags);
248 spin_unlock(&gl->gl_lockref.lock);
252 struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl)
254 struct gfs2_rgrpd *rgd;
256 spin_lock(&gl->gl_lockref.lock);
258 spin_unlock(&gl->gl_lockref.lock);
263 static void gfs2_clear_glop_pending(struct gfs2_inode *ip)
268 clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags);
269 wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING);
273 * gfs2_inode_metasync - sync out the metadata of an inode
274 * @gl: the glock protecting the inode
277 int gfs2_inode_metasync(struct gfs2_glock *gl)
279 struct address_space *metamapping = gfs2_glock2aspace(gl);
282 filemap_fdatawrite(metamapping);
283 error = filemap_fdatawait(metamapping);
285 gfs2_io_error(gl->gl_name.ln_sbd);
290 * inode_go_sync - Sync the dirty metadata of an inode
291 * @gl: the glock protecting the inode
295 static int inode_go_sync(struct gfs2_glock *gl)
297 struct gfs2_inode *ip = gfs2_glock2inode(gl);
298 int isreg = ip && S_ISREG(ip->i_inode.i_mode);
299 struct address_space *metamapping = gfs2_glock2aspace(gl);
303 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
304 unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
305 inode_dio_wait(&ip->i_inode);
307 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
310 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
312 gfs2_log_flush(gl->gl_name.ln_sbd, gl, GFS2_LOG_HEAD_FLUSH_NORMAL |
313 GFS2_LFC_INODE_GO_SYNC);
314 filemap_fdatawrite(metamapping);
316 struct address_space *mapping = ip->i_inode.i_mapping;
317 filemap_fdatawrite(mapping);
318 error = filemap_fdatawait(mapping);
319 mapping_set_error(mapping, error);
321 ret = gfs2_inode_metasync(gl);
324 gfs2_ail_empty_gl(gl);
326 * Writeback of the data mapping may cause the dirty flag to be set
327 * so we have to clear it again here.
329 smp_mb__before_atomic();
330 clear_bit(GLF_DIRTY, &gl->gl_flags);
333 gfs2_clear_glop_pending(ip);
338 * inode_go_inval - prepare a inode glock to be released
342 * Normally we invalidate everything, but if we are moving into
343 * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
344 * can keep hold of the metadata, since it won't have changed.
348 static void inode_go_inval(struct gfs2_glock *gl, int flags)
350 struct gfs2_inode *ip = gfs2_glock2inode(gl);
352 if (flags & DIO_METADATA) {
353 struct address_space *mapping = gfs2_glock2aspace(gl);
354 truncate_inode_pages(mapping, 0);
356 set_bit(GIF_INVALID, &ip->i_flags);
357 forget_all_cached_acls(&ip->i_inode);
358 security_inode_invalidate_secctx(&ip->i_inode);
359 gfs2_dir_hash_inval(ip);
363 if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
364 gfs2_log_flush(gl->gl_name.ln_sbd, NULL,
365 GFS2_LOG_HEAD_FLUSH_NORMAL |
366 GFS2_LFC_INODE_GO_INVAL);
367 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
369 if (ip && S_ISREG(ip->i_inode.i_mode))
370 truncate_inode_pages(ip->i_inode.i_mapping, 0);
372 gfs2_clear_glop_pending(ip);
376 * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
379 * Returns: 1 if it's ok
382 static int inode_go_demote_ok(const struct gfs2_glock *gl)
384 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
386 if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
392 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
394 const struct gfs2_dinode *str = buf;
395 struct timespec64 atime;
398 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
400 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
401 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
402 ip->i_inode.i_rdev = 0;
403 switch (ip->i_inode.i_mode & S_IFMT) {
406 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
407 be32_to_cpu(str->di_minor));
411 i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
412 i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
413 set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
414 i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
415 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
416 atime.tv_sec = be64_to_cpu(str->di_atime);
417 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
418 if (timespec64_compare(&ip->i_inode.i_atime, &atime) < 0)
419 ip->i_inode.i_atime = atime;
420 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
421 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
422 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
423 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
425 ip->i_goal = be64_to_cpu(str->di_goal_meta);
426 ip->i_generation = be64_to_cpu(str->di_generation);
428 ip->i_diskflags = be32_to_cpu(str->di_flags);
429 ip->i_eattr = be64_to_cpu(str->di_eattr);
430 /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
431 gfs2_set_inode_flags(&ip->i_inode);
432 height = be16_to_cpu(str->di_height);
433 if (unlikely(height > GFS2_MAX_META_HEIGHT))
435 ip->i_height = (u8)height;
437 depth = be16_to_cpu(str->di_depth);
438 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
440 ip->i_depth = (u8)depth;
441 ip->i_entries = be32_to_cpu(str->di_entries);
443 if (S_ISREG(ip->i_inode.i_mode))
444 gfs2_set_aops(&ip->i_inode);
448 gfs2_consist_inode(ip);
453 * gfs2_inode_refresh - Refresh the incore copy of the dinode
454 * @ip: The GFS2 inode
459 int gfs2_inode_refresh(struct gfs2_inode *ip)
461 struct buffer_head *dibh;
464 error = gfs2_meta_inode_buffer(ip, &dibh);
468 error = gfs2_dinode_in(ip, dibh->b_data);
470 clear_bit(GIF_INVALID, &ip->i_flags);
476 * inode_go_lock - operation done after an inode lock is locked by a process
483 static int inode_go_lock(struct gfs2_holder *gh)
485 struct gfs2_glock *gl = gh->gh_gl;
486 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
487 struct gfs2_inode *ip = gl->gl_object;
490 if (!ip || (gh->gh_flags & GL_SKIP))
493 if (test_bit(GIF_INVALID, &ip->i_flags)) {
494 error = gfs2_inode_refresh(ip);
499 if (gh->gh_state != LM_ST_DEFERRED)
500 inode_dio_wait(&ip->i_inode);
502 if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
503 (gl->gl_state == LM_ST_EXCLUSIVE) &&
504 (gh->gh_state == LM_ST_EXCLUSIVE)) {
505 spin_lock(&sdp->sd_trunc_lock);
506 if (list_empty(&ip->i_trunc_list))
507 list_add(&ip->i_trunc_list, &sdp->sd_trunc_list);
508 spin_unlock(&sdp->sd_trunc_lock);
509 wake_up(&sdp->sd_quota_wait);
517 * inode_go_dump - print information about an inode
520 * @fs_id_buf: file system id (may be empty)
524 static void inode_go_dump(struct seq_file *seq, struct gfs2_glock *gl,
525 const char *fs_id_buf)
527 struct gfs2_inode *ip = gl->gl_object;
528 struct inode *inode = &ip->i_inode;
529 unsigned long nrpages;
534 xa_lock_irq(&inode->i_data.i_pages);
535 nrpages = inode->i_data.nrpages;
536 xa_unlock_irq(&inode->i_data.i_pages);
538 gfs2_print_dbg(seq, "%s I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu "
539 "p:%lu\n", fs_id_buf,
540 (unsigned long long)ip->i_no_formal_ino,
541 (unsigned long long)ip->i_no_addr,
542 IF2DT(ip->i_inode.i_mode), ip->i_flags,
543 (unsigned int)ip->i_diskflags,
544 (unsigned long long)i_size_read(inode), nrpages);
548 * freeze_go_sync - promote/demote the freeze glock
550 * @state: the requested state
555 static int freeze_go_sync(struct gfs2_glock *gl)
558 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
561 * We need to check gl_state == LM_ST_SHARED here and not gl_req ==
562 * LM_ST_EXCLUSIVE. That's because when any node does a freeze,
563 * all the nodes should have the freeze glock in SH mode and they all
564 * call do_xmote: One for EX and the others for UN. They ALL must
565 * freeze locally, and they ALL must queue freeze work. The freeze_work
566 * calls freeze_func, which tries to reacquire the freeze glock in SH,
567 * effectively waiting for the thaw on the node who holds it in EX.
568 * Once thawed, the work func acquires the freeze glock in
569 * SH and everybody goes back to thawed.
571 if (gl->gl_state == LM_ST_SHARED && !gfs2_withdrawn(sdp) &&
572 !test_bit(SDF_NORECOVERY, &sdp->sd_flags)) {
573 atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
574 error = freeze_super(sdp->sd_vfs);
576 fs_info(sdp, "GFS2: couldn't freeze filesystem: %d\n",
578 if (gfs2_withdrawn(sdp)) {
579 atomic_set(&sdp->sd_freeze_state, SFS_UNFROZEN);
582 gfs2_assert_withdraw(sdp, 0);
584 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
585 if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags))
586 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_FREEZE |
587 GFS2_LFC_FREEZE_GO_SYNC);
588 else /* read-only mounts */
589 atomic_set(&sdp->sd_freeze_state, SFS_FROZEN);
595 * freeze_go_xmote_bh - After promoting/demoting the freeze glock
600 static int freeze_go_xmote_bh(struct gfs2_glock *gl)
602 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
603 struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
604 struct gfs2_glock *j_gl = ip->i_gl;
605 struct gfs2_log_header_host head;
608 if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
609 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
611 error = gfs2_find_jhead(sdp->sd_jdesc, &head, false);
614 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
617 /* Initialize some head of the log stuff */
618 if (!gfs2_withdrawn(sdp)) {
619 sdp->sd_log_sequence = head.lh_sequence + 1;
620 gfs2_log_pointers_init(sdp, head.lh_blkno);
633 static int freeze_go_demote_ok(const struct gfs2_glock *gl)
639 * iopen_go_callback - schedule the dcache entry for the inode to be deleted
642 * gl_lockref.lock lock is held while calling this
644 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
646 struct gfs2_inode *ip = gl->gl_object;
647 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
649 if (!remote || sb_rdonly(sdp->sd_vfs))
652 if (gl->gl_demote_state == LM_ST_UNLOCKED &&
653 gl->gl_state == LM_ST_SHARED && ip) {
654 gl->gl_lockref.count++;
655 if (!queue_delayed_work(gfs2_delete_workqueue,
657 gl->gl_lockref.count--;
661 static int iopen_go_demote_ok(const struct gfs2_glock *gl)
663 return !gfs2_delete_work_queued(gl);
667 * inode_go_free - wake up anyone waiting for dlm's unlock ast to free it
668 * @gl: glock being freed
670 * For now, this is only used for the journal inode glock. In withdraw
671 * situations, we need to wait for the glock to be freed so that we know
672 * other nodes may proceed with recovery / journal replay.
674 static void inode_go_free(struct gfs2_glock *gl)
676 /* Note that we cannot reference gl_object because it's already set
677 * to NULL by this point in its lifecycle. */
678 if (!test_bit(GLF_FREEING, &gl->gl_flags))
680 clear_bit_unlock(GLF_FREEING, &gl->gl_flags);
681 wake_up_bit(&gl->gl_flags, GLF_FREEING);
685 * nondisk_go_callback - used to signal when a node did a withdraw
686 * @gl: the nondisk glock
687 * @remote: true if this came from a different cluster node
690 static void nondisk_go_callback(struct gfs2_glock *gl, bool remote)
692 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
694 /* Ignore the callback unless it's from another node, and it's the
696 if (!remote || gl->gl_name.ln_number != GFS2_LIVE_LOCK)
699 /* First order of business is to cancel the demote request. We don't
700 * really want to demote a nondisk glock. At best it's just to inform
701 * us of another node's withdraw. We'll keep it in SH mode. */
702 clear_bit(GLF_DEMOTE, &gl->gl_flags);
703 clear_bit(GLF_PENDING_DEMOTE, &gl->gl_flags);
705 /* Ignore the unlock if we're withdrawn, unmounting, or in recovery. */
706 if (test_bit(SDF_NORECOVERY, &sdp->sd_flags) ||
707 test_bit(SDF_WITHDRAWN, &sdp->sd_flags) ||
708 test_bit(SDF_REMOTE_WITHDRAW, &sdp->sd_flags))
711 /* We only care when a node wants us to unlock, because that means
712 * they want a journal recovered. */
713 if (gl->gl_demote_state != LM_ST_UNLOCKED)
716 if (sdp->sd_args.ar_spectator) {
717 fs_warn(sdp, "Spectator node cannot recover journals.\n");
721 fs_warn(sdp, "Some node has withdrawn; checking for recovery.\n");
722 set_bit(SDF_REMOTE_WITHDRAW, &sdp->sd_flags);
724 * We can't call remote_withdraw directly here or gfs2_recover_journal
725 * because this is called from the glock unlock function and the
726 * remote_withdraw needs to enqueue and dequeue the same "live" glock
727 * we were called from. So we queue it to the control work queue in
730 queue_delayed_work(gfs2_control_wq, &sdp->sd_control_work, 0);
733 const struct gfs2_glock_operations gfs2_meta_glops = {
734 .go_type = LM_TYPE_META,
735 .go_flags = GLOF_NONDISK,
738 const struct gfs2_glock_operations gfs2_inode_glops = {
739 .go_sync = inode_go_sync,
740 .go_inval = inode_go_inval,
741 .go_demote_ok = inode_go_demote_ok,
742 .go_lock = inode_go_lock,
743 .go_dump = inode_go_dump,
744 .go_type = LM_TYPE_INODE,
745 .go_flags = GLOF_ASPACE | GLOF_LRU | GLOF_LVB,
746 .go_free = inode_go_free,
749 const struct gfs2_glock_operations gfs2_rgrp_glops = {
750 .go_sync = rgrp_go_sync,
751 .go_inval = rgrp_go_inval,
752 .go_lock = gfs2_rgrp_go_lock,
753 .go_dump = gfs2_rgrp_go_dump,
754 .go_type = LM_TYPE_RGRP,
755 .go_flags = GLOF_LVB,
758 const struct gfs2_glock_operations gfs2_freeze_glops = {
759 .go_sync = freeze_go_sync,
760 .go_xmote_bh = freeze_go_xmote_bh,
761 .go_demote_ok = freeze_go_demote_ok,
762 .go_type = LM_TYPE_NONDISK,
763 .go_flags = GLOF_NONDISK,
766 const struct gfs2_glock_operations gfs2_iopen_glops = {
767 .go_type = LM_TYPE_IOPEN,
768 .go_callback = iopen_go_callback,
769 .go_demote_ok = iopen_go_demote_ok,
770 .go_flags = GLOF_LRU | GLOF_NONDISK,
774 const struct gfs2_glock_operations gfs2_flock_glops = {
775 .go_type = LM_TYPE_FLOCK,
776 .go_flags = GLOF_LRU | GLOF_NONDISK,
779 const struct gfs2_glock_operations gfs2_nondisk_glops = {
780 .go_type = LM_TYPE_NONDISK,
781 .go_flags = GLOF_NONDISK,
782 .go_callback = nondisk_go_callback,
785 const struct gfs2_glock_operations gfs2_quota_glops = {
786 .go_type = LM_TYPE_QUOTA,
787 .go_flags = GLOF_LVB | GLOF_LRU | GLOF_NONDISK,
790 const struct gfs2_glock_operations gfs2_journal_glops = {
791 .go_type = LM_TYPE_JOURNAL,
792 .go_flags = GLOF_NONDISK,
795 const struct gfs2_glock_operations *gfs2_glops_list[] = {
796 [LM_TYPE_META] = &gfs2_meta_glops,
797 [LM_TYPE_INODE] = &gfs2_inode_glops,
798 [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
799 [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
800 [LM_TYPE_FLOCK] = &gfs2_flock_glops,
801 [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
802 [LM_TYPE_QUOTA] = &gfs2_quota_glops,
803 [LM_TYPE_JOURNAL] = &gfs2_journal_glops,