These changes are the raw update to linux-4.4.6-rt14. Kernel sources
[kvmfornfv.git] / kernel / 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
17 #include "gfs2.h"
18 #include "incore.h"
19 #include "bmap.h"
20 #include "glock.h"
21 #include "glops.h"
22 #include "inode.h"
23 #include "log.h"
24 #include "meta_io.h"
25 #include "recovery.h"
26 #include "rgrp.h"
27 #include "util.h"
28 #include "trans.h"
29 #include "dir.h"
30
31 struct workqueue_struct *gfs2_freeze_wq;
32
33 static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
34 {
35         fs_err(gl->gl_name.ln_sbd,
36                "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page "
37                "state 0x%lx\n",
38                bh, (unsigned long long)bh->b_blocknr, bh->b_state,
39                bh->b_page->mapping, bh->b_page->flags);
40         fs_err(gl->gl_name.ln_sbd, "AIL glock %u:%llu mapping %p\n",
41                gl->gl_name.ln_type, gl->gl_name.ln_number,
42                gfs2_glock2aspace(gl));
43         gfs2_lm_withdraw(gl->gl_name.ln_sbd, "AIL error\n");
44 }
45
46 /**
47  * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
48  * @gl: the glock
49  * @fsync: set when called from fsync (not all buffers will be clean)
50  *
51  * None of the buffers should be dirty, locked, or pinned.
52  */
53
54 static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
55                              unsigned int nr_revokes)
56 {
57         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
58         struct list_head *head = &gl->gl_ail_list;
59         struct gfs2_bufdata *bd, *tmp;
60         struct buffer_head *bh;
61         const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
62
63         gfs2_log_lock(sdp);
64         spin_lock(&sdp->sd_ail_lock);
65         list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
66                 if (nr_revokes == 0)
67                         break;
68                 bh = bd->bd_bh;
69                 if (bh->b_state & b_state) {
70                         if (fsync)
71                                 continue;
72                         gfs2_ail_error(gl, bh);
73                 }
74                 gfs2_trans_add_revoke(sdp, bd);
75                 nr_revokes--;
76         }
77         GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
78         spin_unlock(&sdp->sd_ail_lock);
79         gfs2_log_unlock(sdp);
80 }
81
82
83 static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
84 {
85         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
86         struct gfs2_trans tr;
87
88         memset(&tr, 0, sizeof(tr));
89         INIT_LIST_HEAD(&tr.tr_buf);
90         INIT_LIST_HEAD(&tr.tr_databuf);
91         tr.tr_revokes = atomic_read(&gl->gl_ail_count);
92
93         if (!tr.tr_revokes)
94                 return;
95
96         /* A shortened, inline version of gfs2_trans_begin()
97          * tr->alloced is not set since the transaction structure is
98          * on the stack */
99         tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
100         tr.tr_ip = _RET_IP_;
101         if (gfs2_log_reserve(sdp, tr.tr_reserved) < 0)
102                 return;
103         WARN_ON_ONCE(current->journal_info);
104         current->journal_info = &tr;
105
106         __gfs2_ail_flush(gl, 0, tr.tr_revokes);
107
108         gfs2_trans_end(sdp);
109         gfs2_log_flush(sdp, NULL, NORMAL_FLUSH);
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, NORMAL_FLUSH);
131 }
132
133 /**
134  * rgrp_go_sync - sync out the metadata for this glock
135  * @gl: the glock
136  *
137  * Called when demoting or unlocking an EX glock.  We must flush
138  * to disk all dirty buffers/pages relating to this glock, and must not
139  * not return to caller to demote/unlock the glock until I/O is complete.
140  */
141
142 static void rgrp_go_sync(struct gfs2_glock *gl)
143 {
144         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
145         struct address_space *mapping = &sdp->sd_aspace;
146         struct gfs2_rgrpd *rgd;
147         int error;
148
149         spin_lock(&gl->gl_lockref.lock);
150         rgd = gl->gl_object;
151         if (rgd)
152                 gfs2_rgrp_brelse(rgd);
153         spin_unlock(&gl->gl_lockref.lock);
154
155         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
156                 return;
157         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
158
159         gfs2_log_flush(sdp, gl, NORMAL_FLUSH);
160         filemap_fdatawrite_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
161         error = filemap_fdatawait_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
162         mapping_set_error(mapping, error);
163         gfs2_ail_empty_gl(gl);
164
165         spin_lock(&gl->gl_lockref.lock);
166         rgd = gl->gl_object;
167         if (rgd)
168                 gfs2_free_clones(rgd);
169         spin_unlock(&gl->gl_lockref.lock);
170 }
171
172 /**
173  * rgrp_go_inval - invalidate the metadata for this glock
174  * @gl: the glock
175  * @flags:
176  *
177  * We never used LM_ST_DEFERRED with resource groups, so that we
178  * should always see the metadata flag set here.
179  *
180  */
181
182 static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
183 {
184         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
185         struct address_space *mapping = &sdp->sd_aspace;
186         struct gfs2_rgrpd *rgd = gl->gl_object;
187
188         if (rgd)
189                 gfs2_rgrp_brelse(rgd);
190
191         WARN_ON_ONCE(!(flags & DIO_METADATA));
192         gfs2_assert_withdraw(sdp, !atomic_read(&gl->gl_ail_count));
193         truncate_inode_pages_range(mapping, gl->gl_vm.start, gl->gl_vm.end);
194
195         if (rgd)
196                 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
197 }
198
199 /**
200  * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
201  * @gl: the glock protecting the inode
202  *
203  */
204
205 static void inode_go_sync(struct gfs2_glock *gl)
206 {
207         struct gfs2_inode *ip = gl->gl_object;
208         struct address_space *metamapping = gfs2_glock2aspace(gl);
209         int error;
210
211         if (ip && !S_ISREG(ip->i_inode.i_mode))
212                 ip = NULL;
213         if (ip) {
214                 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
215                         unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
216                 inode_dio_wait(&ip->i_inode);
217         }
218         if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
219                 return;
220
221         GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
222
223         gfs2_log_flush(gl->gl_name.ln_sbd, gl, NORMAL_FLUSH);
224         filemap_fdatawrite(metamapping);
225         if (ip) {
226                 struct address_space *mapping = ip->i_inode.i_mapping;
227                 filemap_fdatawrite(mapping);
228                 error = filemap_fdatawait(mapping);
229                 mapping_set_error(mapping, error);
230         }
231         error = filemap_fdatawait(metamapping);
232         mapping_set_error(metamapping, error);
233         gfs2_ail_empty_gl(gl);
234         /*
235          * Writeback of the data mapping may cause the dirty flag to be set
236          * so we have to clear it again here.
237          */
238         smp_mb__before_atomic();
239         clear_bit(GLF_DIRTY, &gl->gl_flags);
240 }
241
242 /**
243  * inode_go_inval - prepare a inode glock to be released
244  * @gl: the glock
245  * @flags:
246  *
247  * Normally we invalidate everything, but if we are moving into
248  * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
249  * can keep hold of the metadata, since it won't have changed.
250  *
251  */
252
253 static void inode_go_inval(struct gfs2_glock *gl, int flags)
254 {
255         struct gfs2_inode *ip = gl->gl_object;
256
257         gfs2_assert_withdraw(gl->gl_name.ln_sbd, !atomic_read(&gl->gl_ail_count));
258
259         if (flags & DIO_METADATA) {
260                 struct address_space *mapping = gfs2_glock2aspace(gl);
261                 truncate_inode_pages(mapping, 0);
262                 if (ip) {
263                         set_bit(GIF_INVALID, &ip->i_flags);
264                         forget_all_cached_acls(&ip->i_inode);
265                         gfs2_dir_hash_inval(ip);
266                 }
267         }
268
269         if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
270                 gfs2_log_flush(gl->gl_name.ln_sbd, NULL, NORMAL_FLUSH);
271                 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
272         }
273         if (ip && S_ISREG(ip->i_inode.i_mode))
274                 truncate_inode_pages(ip->i_inode.i_mapping, 0);
275 }
276
277 /**
278  * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
279  * @gl: the glock
280  *
281  * Returns: 1 if it's ok
282  */
283
284 static int inode_go_demote_ok(const struct gfs2_glock *gl)
285 {
286         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
287         struct gfs2_holder *gh;
288
289         if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
290                 return 0;
291
292         if (!list_empty(&gl->gl_holders)) {
293                 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
294                 if (gh->gh_list.next != &gl->gl_holders)
295                         return 0;
296         }
297
298         return 1;
299 }
300
301 /**
302  * gfs2_set_nlink - Set the inode's link count based on on-disk info
303  * @inode: The inode in question
304  * @nlink: The link count
305  *
306  * If the link count has hit zero, it must never be raised, whatever the
307  * on-disk inode might say. When new struct inodes are created the link
308  * count is set to 1, so that we can safely use this test even when reading
309  * in on disk information for the first time.
310  */
311
312 static void gfs2_set_nlink(struct inode *inode, u32 nlink)
313 {
314         /*
315          * We will need to review setting the nlink count here in the
316          * light of the forthcoming ro bind mount work. This is a reminder
317          * to do that.
318          */
319         if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
320                 if (nlink == 0)
321                         clear_nlink(inode);
322                 else
323                         set_nlink(inode, nlink);
324         }
325 }
326
327 static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
328 {
329         const struct gfs2_dinode *str = buf;
330         struct timespec atime;
331         u16 height, depth;
332
333         if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
334                 goto corrupt;
335         ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
336         ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
337         ip->i_inode.i_rdev = 0;
338         switch (ip->i_inode.i_mode & S_IFMT) {
339         case S_IFBLK:
340         case S_IFCHR:
341                 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
342                                            be32_to_cpu(str->di_minor));
343                 break;
344         };
345
346         i_uid_write(&ip->i_inode, be32_to_cpu(str->di_uid));
347         i_gid_write(&ip->i_inode, be32_to_cpu(str->di_gid));
348         gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
349         i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
350         gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
351         atime.tv_sec = be64_to_cpu(str->di_atime);
352         atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
353         if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
354                 ip->i_inode.i_atime = atime;
355         ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
356         ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
357         ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
358         ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
359
360         ip->i_goal = be64_to_cpu(str->di_goal_meta);
361         ip->i_generation = be64_to_cpu(str->di_generation);
362
363         ip->i_diskflags = be32_to_cpu(str->di_flags);
364         ip->i_eattr = be64_to_cpu(str->di_eattr);
365         /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
366         gfs2_set_inode_flags(&ip->i_inode);
367         height = be16_to_cpu(str->di_height);
368         if (unlikely(height > GFS2_MAX_META_HEIGHT))
369                 goto corrupt;
370         ip->i_height = (u8)height;
371
372         depth = be16_to_cpu(str->di_depth);
373         if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
374                 goto corrupt;
375         ip->i_depth = (u8)depth;
376         ip->i_entries = be32_to_cpu(str->di_entries);
377
378         if (S_ISREG(ip->i_inode.i_mode))
379                 gfs2_set_aops(&ip->i_inode);
380
381         return 0;
382 corrupt:
383         gfs2_consist_inode(ip);
384         return -EIO;
385 }
386
387 /**
388  * gfs2_inode_refresh - Refresh the incore copy of the dinode
389  * @ip: The GFS2 inode
390  *
391  * Returns: errno
392  */
393
394 int gfs2_inode_refresh(struct gfs2_inode *ip)
395 {
396         struct buffer_head *dibh;
397         int error;
398
399         error = gfs2_meta_inode_buffer(ip, &dibh);
400         if (error)
401                 return error;
402
403         error = gfs2_dinode_in(ip, dibh->b_data);
404         brelse(dibh);
405         clear_bit(GIF_INVALID, &ip->i_flags);
406
407         return error;
408 }
409
410 /**
411  * inode_go_lock - operation done after an inode lock is locked by a process
412  * @gl: the glock
413  * @flags:
414  *
415  * Returns: errno
416  */
417
418 static int inode_go_lock(struct gfs2_holder *gh)
419 {
420         struct gfs2_glock *gl = gh->gh_gl;
421         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
422         struct gfs2_inode *ip = gl->gl_object;
423         int error = 0;
424
425         if (!ip || (gh->gh_flags & GL_SKIP))
426                 return 0;
427
428         if (test_bit(GIF_INVALID, &ip->i_flags)) {
429                 error = gfs2_inode_refresh(ip);
430                 if (error)
431                         return error;
432         }
433
434         if (gh->gh_state != LM_ST_DEFERRED)
435                 inode_dio_wait(&ip->i_inode);
436
437         if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
438             (gl->gl_state == LM_ST_EXCLUSIVE) &&
439             (gh->gh_state == LM_ST_EXCLUSIVE)) {
440                 spin_lock(&sdp->sd_trunc_lock);
441                 if (list_empty(&ip->i_trunc_list))
442                         list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
443                 spin_unlock(&sdp->sd_trunc_lock);
444                 wake_up(&sdp->sd_quota_wait);
445                 return 1;
446         }
447
448         return error;
449 }
450
451 /**
452  * inode_go_dump - print information about an inode
453  * @seq: The iterator
454  * @ip: the inode
455  *
456  */
457
458 static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
459 {
460         const struct gfs2_inode *ip = gl->gl_object;
461         if (ip == NULL)
462                 return;
463         gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
464                   (unsigned long long)ip->i_no_formal_ino,
465                   (unsigned long long)ip->i_no_addr,
466                   IF2DT(ip->i_inode.i_mode), ip->i_flags,
467                   (unsigned int)ip->i_diskflags,
468                   (unsigned long long)i_size_read(&ip->i_inode));
469 }
470
471 /**
472  * freeze_go_sync - promote/demote the freeze glock
473  * @gl: the glock
474  * @state: the requested state
475  * @flags:
476  *
477  */
478
479 static void freeze_go_sync(struct gfs2_glock *gl)
480 {
481         int error = 0;
482         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
483
484         if (gl->gl_state == LM_ST_SHARED &&
485             test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
486                 atomic_set(&sdp->sd_freeze_state, SFS_STARTING_FREEZE);
487                 error = freeze_super(sdp->sd_vfs);
488                 if (error) {
489                         printk(KERN_INFO "GFS2: couldn't freeze filesystem: %d\n", error);
490                         gfs2_assert_withdraw(sdp, 0);
491                 }
492                 queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work);
493                 gfs2_log_flush(sdp, NULL, FREEZE_FLUSH);
494         }
495 }
496
497 /**
498  * freeze_go_xmote_bh - After promoting/demoting the freeze glock
499  * @gl: the glock
500  *
501  */
502
503 static int freeze_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
504 {
505         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
506         struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
507         struct gfs2_glock *j_gl = ip->i_gl;
508         struct gfs2_log_header_host head;
509         int error;
510
511         if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
512                 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
513
514                 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
515                 if (error)
516                         gfs2_consist(sdp);
517                 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
518                         gfs2_consist(sdp);
519
520                 /*  Initialize some head of the log stuff  */
521                 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
522                         sdp->sd_log_sequence = head.lh_sequence + 1;
523                         gfs2_log_pointers_init(sdp, head.lh_blkno);
524                 }
525         }
526         return 0;
527 }
528
529 /**
530  * trans_go_demote_ok
531  * @gl: the glock
532  *
533  * Always returns 0
534  */
535
536 static int freeze_go_demote_ok(const struct gfs2_glock *gl)
537 {
538         return 0;
539 }
540
541 /**
542  * iopen_go_callback - schedule the dcache entry for the inode to be deleted
543  * @gl: the glock
544  *
545  * gl_lockref.lock lock is held while calling this
546  */
547 static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
548 {
549         struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
550         struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
551
552         if (!remote || (sdp->sd_vfs->s_flags & MS_RDONLY))
553                 return;
554
555         if (gl->gl_demote_state == LM_ST_UNLOCKED &&
556             gl->gl_state == LM_ST_SHARED && ip) {
557                 gl->gl_lockref.count++;
558                 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
559                         gl->gl_lockref.count--;
560         }
561 }
562
563 const struct gfs2_glock_operations gfs2_meta_glops = {
564         .go_type = LM_TYPE_META,
565 };
566
567 const struct gfs2_glock_operations gfs2_inode_glops = {
568         .go_sync = inode_go_sync,
569         .go_inval = inode_go_inval,
570         .go_demote_ok = inode_go_demote_ok,
571         .go_lock = inode_go_lock,
572         .go_dump = inode_go_dump,
573         .go_type = LM_TYPE_INODE,
574         .go_flags = GLOF_ASPACE | GLOF_LRU,
575 };
576
577 const struct gfs2_glock_operations gfs2_rgrp_glops = {
578         .go_sync = rgrp_go_sync,
579         .go_inval = rgrp_go_inval,
580         .go_lock = gfs2_rgrp_go_lock,
581         .go_unlock = gfs2_rgrp_go_unlock,
582         .go_dump = gfs2_rgrp_dump,
583         .go_type = LM_TYPE_RGRP,
584         .go_flags = GLOF_LVB,
585 };
586
587 const struct gfs2_glock_operations gfs2_freeze_glops = {
588         .go_sync = freeze_go_sync,
589         .go_xmote_bh = freeze_go_xmote_bh,
590         .go_demote_ok = freeze_go_demote_ok,
591         .go_type = LM_TYPE_NONDISK,
592 };
593
594 const struct gfs2_glock_operations gfs2_iopen_glops = {
595         .go_type = LM_TYPE_IOPEN,
596         .go_callback = iopen_go_callback,
597         .go_flags = GLOF_LRU,
598 };
599
600 const struct gfs2_glock_operations gfs2_flock_glops = {
601         .go_type = LM_TYPE_FLOCK,
602         .go_flags = GLOF_LRU,
603 };
604
605 const struct gfs2_glock_operations gfs2_nondisk_glops = {
606         .go_type = LM_TYPE_NONDISK,
607 };
608
609 const struct gfs2_glock_operations gfs2_quota_glops = {
610         .go_type = LM_TYPE_QUOTA,
611         .go_flags = GLOF_LVB | GLOF_LRU,
612 };
613
614 const struct gfs2_glock_operations gfs2_journal_glops = {
615         .go_type = LM_TYPE_JOURNAL,
616 };
617
618 const struct gfs2_glock_operations *gfs2_glops_list[] = {
619         [LM_TYPE_META] = &gfs2_meta_glops,
620         [LM_TYPE_INODE] = &gfs2_inode_glops,
621         [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
622         [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
623         [LM_TYPE_FLOCK] = &gfs2_flock_glops,
624         [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
625         [LM_TYPE_QUOTA] = &gfs2_quota_glops,
626         [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
627 };
628