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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
31static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
32{
33 fs_err(gl->gl_sbd, "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page state 0x%lx\n",
34 bh, (unsigned long long)bh->b_blocknr, bh->b_state,
35 bh->b_page->mapping, bh->b_page->flags);
36 fs_err(gl->gl_sbd, "AIL glock %u:%llu mapping %p\n",
37 gl->gl_name.ln_type, gl->gl_name.ln_number,
38 gfs2_glock2aspace(gl));
39 gfs2_lm_withdraw(gl->gl_sbd, "AIL error\n");
40}
41
42/**
43 * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
44 * @gl: the glock
45 * @fsync: set when called from fsync (not all buffers will be clean)
46 *
47 * None of the buffers should be dirty, locked, or pinned.
48 */
49
50static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
51{
52 struct gfs2_sbd *sdp = gl->gl_sbd;
53 struct list_head *head = &gl->gl_ail_list;
54 struct gfs2_bufdata *bd, *tmp;
55 struct buffer_head *bh;
56 const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
57 sector_t blocknr;
58
59 gfs2_log_lock(sdp);
60 spin_lock(&sdp->sd_ail_lock);
61 list_for_each_entry_safe(bd, tmp, head, bd_ail_gl_list) {
62 bh = bd->bd_bh;
63 if (bh->b_state & b_state) {
64 if (fsync)
65 continue;
66 gfs2_ail_error(gl, bh);
67 }
68 blocknr = bh->b_blocknr;
69 bh->b_private = NULL;
70 gfs2_remove_from_ail(bd); /* drops ref on bh */
71
72 bd->bd_bh = NULL;
73 bd->bd_blkno = blocknr;
74
75 gfs2_trans_add_revoke(sdp, bd);
76 }
77 BUG_ON(!fsync && atomic_read(&gl->gl_ail_count));
78 spin_unlock(&sdp->sd_ail_lock);
79 gfs2_log_unlock(sdp);
80}
81
82
83static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
84{
85 struct gfs2_sbd *sdp = gl->gl_sbd;
86 struct gfs2_trans tr;
87
88 memset(&tr, 0, sizeof(tr));
89 tr.tr_revokes = atomic_read(&gl->gl_ail_count);
90
91 if (!tr.tr_revokes)
92 return;
93
94 /* A shortened, inline version of gfs2_trans_begin() */
95 tr.tr_reserved = 1 + gfs2_struct2blk(sdp, tr.tr_revokes, sizeof(u64));
96 tr.tr_ip = (unsigned long)__builtin_return_address(0);
97 gfs2_log_reserve(sdp, tr.tr_reserved);
98 BUG_ON(current->journal_info);
99 current->journal_info = &tr;
100
101 __gfs2_ail_flush(gl, 0);
102
103 gfs2_trans_end(sdp);
104 gfs2_log_flush(sdp, NULL);
105}
106
107void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
108{
109 struct gfs2_sbd *sdp = gl->gl_sbd;
110 unsigned int revokes = atomic_read(&gl->gl_ail_count);
111 int ret;
112
113 if (!revokes)
114 return;
115
116 ret = gfs2_trans_begin(sdp, 0, revokes);
117 if (ret)
118 return;
119 __gfs2_ail_flush(gl, fsync);
120 gfs2_trans_end(sdp);
121 gfs2_log_flush(sdp, NULL);
122}
123
124/**
125 * rgrp_go_sync - sync out the metadata for this glock
126 * @gl: the glock
127 *
128 * Called when demoting or unlocking an EX glock. We must flush
129 * to disk all dirty buffers/pages relating to this glock, and must not
130 * not return to caller to demote/unlock the glock until I/O is complete.
131 */
132
133static void rgrp_go_sync(struct gfs2_glock *gl)
134{
135 struct address_space *metamapping = gfs2_glock2aspace(gl);
136 struct gfs2_rgrpd *rgd;
137 int error;
138
139 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
140 return;
141 BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
142
143 gfs2_log_flush(gl->gl_sbd, gl);
144 filemap_fdatawrite(metamapping);
145 error = filemap_fdatawait(metamapping);
146 mapping_set_error(metamapping, error);
147 gfs2_ail_empty_gl(gl);
148
149 spin_lock(&gl->gl_spin);
150 rgd = gl->gl_object;
151 if (rgd)
152 gfs2_free_clones(rgd);
153 spin_unlock(&gl->gl_spin);
154}
155
156/**
157 * rgrp_go_inval - invalidate the metadata for this glock
158 * @gl: the glock
159 * @flags:
160 *
161 * We never used LM_ST_DEFERRED with resource groups, so that we
162 * should always see the metadata flag set here.
163 *
164 */
165
166static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
167{
168 struct address_space *mapping = gfs2_glock2aspace(gl);
169
170 BUG_ON(!(flags & DIO_METADATA));
171 gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
172 truncate_inode_pages(mapping, 0);
173
174 if (gl->gl_object) {
175 struct gfs2_rgrpd *rgd = (struct gfs2_rgrpd *)gl->gl_object;
176 rgd->rd_flags &= ~GFS2_RDF_UPTODATE;
177 }
178}
179
180/**
181 * inode_go_sync - Sync the dirty data and/or metadata for an inode glock
182 * @gl: the glock protecting the inode
183 *
184 */
185
186static void inode_go_sync(struct gfs2_glock *gl)
187{
188 struct gfs2_inode *ip = gl->gl_object;
189 struct address_space *metamapping = gfs2_glock2aspace(gl);
190 int error;
191
192 if (ip && !S_ISREG(ip->i_inode.i_mode))
193 ip = NULL;
194 if (ip && test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
195 unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
196 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
197 return;
198
199 BUG_ON(gl->gl_state != LM_ST_EXCLUSIVE);
200
201 gfs2_log_flush(gl->gl_sbd, gl);
202 filemap_fdatawrite(metamapping);
203 if (ip) {
204 struct address_space *mapping = ip->i_inode.i_mapping;
205 filemap_fdatawrite(mapping);
206 error = filemap_fdatawait(mapping);
207 mapping_set_error(mapping, error);
208 }
209 error = filemap_fdatawait(metamapping);
210 mapping_set_error(metamapping, error);
211 gfs2_ail_empty_gl(gl);
212 /*
213 * Writeback of the data mapping may cause the dirty flag to be set
214 * so we have to clear it again here.
215 */
216 smp_mb__before_clear_bit();
217 clear_bit(GLF_DIRTY, &gl->gl_flags);
218}
219
220/**
221 * inode_go_inval - prepare a inode glock to be released
222 * @gl: the glock
223 * @flags:
224 *
225 * Normally we invlidate everything, but if we are moving into
226 * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
227 * can keep hold of the metadata, since it won't have changed.
228 *
229 */
230
231static void inode_go_inval(struct gfs2_glock *gl, int flags)
232{
233 struct gfs2_inode *ip = gl->gl_object;
234
235 gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
236
237 if (flags & DIO_METADATA) {
238 struct address_space *mapping = gfs2_glock2aspace(gl);
239 truncate_inode_pages(mapping, 0);
240 if (ip) {
241 set_bit(GIF_INVALID, &ip->i_flags);
242 forget_all_cached_acls(&ip->i_inode);
243 gfs2_dir_hash_inval(ip);
244 }
245 }
246
247 if (ip == GFS2_I(gl->gl_sbd->sd_rindex)) {
248 gfs2_log_flush(gl->gl_sbd, NULL);
249 gl->gl_sbd->sd_rindex_uptodate = 0;
250 }
251 if (ip && S_ISREG(ip->i_inode.i_mode))
252 truncate_inode_pages(ip->i_inode.i_mapping, 0);
253}
254
255/**
256 * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
257 * @gl: the glock
258 *
259 * Returns: 1 if it's ok
260 */
261
262static int inode_go_demote_ok(const struct gfs2_glock *gl)
263{
264 struct gfs2_sbd *sdp = gl->gl_sbd;
265 struct gfs2_holder *gh;
266
267 if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
268 return 0;
269
270 if (!list_empty(&gl->gl_holders)) {
271 gh = list_entry(gl->gl_holders.next, struct gfs2_holder, gh_list);
272 if (gh->gh_list.next != &gl->gl_holders)
273 return 0;
274 }
275
276 return 1;
277}
278
279/**
280 * gfs2_set_nlink - Set the inode's link count based on on-disk info
281 * @inode: The inode in question
282 * @nlink: The link count
283 *
284 * If the link count has hit zero, it must never be raised, whatever the
285 * on-disk inode might say. When new struct inodes are created the link
286 * count is set to 1, so that we can safely use this test even when reading
287 * in on disk information for the first time.
288 */
289
290static void gfs2_set_nlink(struct inode *inode, u32 nlink)
291{
292 /*
293 * We will need to review setting the nlink count here in the
294 * light of the forthcoming ro bind mount work. This is a reminder
295 * to do that.
296 */
297 if ((inode->i_nlink != nlink) && (inode->i_nlink != 0)) {
298 if (nlink == 0)
299 clear_nlink(inode);
300 else
301 set_nlink(inode, nlink);
302 }
303}
304
305static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
306{
307 const struct gfs2_dinode *str = buf;
308 struct timespec atime;
309 u16 height, depth;
310
311 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
312 goto corrupt;
313 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
314 ip->i_inode.i_mode = be32_to_cpu(str->di_mode);
315 ip->i_inode.i_rdev = 0;
316 switch (ip->i_inode.i_mode & S_IFMT) {
317 case S_IFBLK:
318 case S_IFCHR:
319 ip->i_inode.i_rdev = MKDEV(be32_to_cpu(str->di_major),
320 be32_to_cpu(str->di_minor));
321 break;
322 };
323
324 ip->i_inode.i_uid = be32_to_cpu(str->di_uid);
325 ip->i_inode.i_gid = be32_to_cpu(str->di_gid);
326 gfs2_set_nlink(&ip->i_inode, be32_to_cpu(str->di_nlink));
327 i_size_write(&ip->i_inode, be64_to_cpu(str->di_size));
328 gfs2_set_inode_blocks(&ip->i_inode, be64_to_cpu(str->di_blocks));
329 atime.tv_sec = be64_to_cpu(str->di_atime);
330 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
331 if (timespec_compare(&ip->i_inode.i_atime, &atime) < 0)
332 ip->i_inode.i_atime = atime;
333 ip->i_inode.i_mtime.tv_sec = be64_to_cpu(str->di_mtime);
334 ip->i_inode.i_mtime.tv_nsec = be32_to_cpu(str->di_mtime_nsec);
335 ip->i_inode.i_ctime.tv_sec = be64_to_cpu(str->di_ctime);
336 ip->i_inode.i_ctime.tv_nsec = be32_to_cpu(str->di_ctime_nsec);
337
338 ip->i_goal = be64_to_cpu(str->di_goal_meta);
339 ip->i_generation = be64_to_cpu(str->di_generation);
340
341 ip->i_diskflags = be32_to_cpu(str->di_flags);
342 ip->i_eattr = be64_to_cpu(str->di_eattr);
343 /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
344 gfs2_set_inode_flags(&ip->i_inode);
345 height = be16_to_cpu(str->di_height);
346 if (unlikely(height > GFS2_MAX_META_HEIGHT))
347 goto corrupt;
348 ip->i_height = (u8)height;
349
350 depth = be16_to_cpu(str->di_depth);
351 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
352 goto corrupt;
353 ip->i_depth = (u8)depth;
354 ip->i_entries = be32_to_cpu(str->di_entries);
355
356 if (S_ISREG(ip->i_inode.i_mode))
357 gfs2_set_aops(&ip->i_inode);
358
359 return 0;
360corrupt:
361 gfs2_consist_inode(ip);
362 return -EIO;
363}
364
365/**
366 * gfs2_inode_refresh - Refresh the incore copy of the dinode
367 * @ip: The GFS2 inode
368 *
369 * Returns: errno
370 */
371
372int gfs2_inode_refresh(struct gfs2_inode *ip)
373{
374 struct buffer_head *dibh;
375 int error;
376
377 error = gfs2_meta_inode_buffer(ip, &dibh);
378 if (error)
379 return error;
380
381 error = gfs2_dinode_in(ip, dibh->b_data);
382 brelse(dibh);
383 clear_bit(GIF_INVALID, &ip->i_flags);
384
385 return error;
386}
387
388/**
389 * inode_go_lock - operation done after an inode lock is locked by a process
390 * @gl: the glock
391 * @flags:
392 *
393 * Returns: errno
394 */
395
396static int inode_go_lock(struct gfs2_holder *gh)
397{
398 struct gfs2_glock *gl = gh->gh_gl;
399 struct gfs2_sbd *sdp = gl->gl_sbd;
400 struct gfs2_inode *ip = gl->gl_object;
401 int error = 0;
402
403 if (!ip || (gh->gh_flags & GL_SKIP))
404 return 0;
405
406 if (test_bit(GIF_INVALID, &ip->i_flags)) {
407 error = gfs2_inode_refresh(ip);
408 if (error)
409 return error;
410 }
411
412 if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
413 (gl->gl_state == LM_ST_EXCLUSIVE) &&
414 (gh->gh_state == LM_ST_EXCLUSIVE)) {
415 spin_lock(&sdp->sd_trunc_lock);
416 if (list_empty(&ip->i_trunc_list))
417 list_add(&sdp->sd_trunc_list, &ip->i_trunc_list);
418 spin_unlock(&sdp->sd_trunc_lock);
419 wake_up(&sdp->sd_quota_wait);
420 return 1;
421 }
422
423 return error;
424}
425
426/**
427 * inode_go_dump - print information about an inode
428 * @seq: The iterator
429 * @ip: the inode
430 *
431 * Returns: 0 on success, -ENOBUFS when we run out of space
432 */
433
434static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
435{
436 const struct gfs2_inode *ip = gl->gl_object;
437 if (ip == NULL)
438 return 0;
439 gfs2_print_dbg(seq, " I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu\n",
440 (unsigned long long)ip->i_no_formal_ino,
441 (unsigned long long)ip->i_no_addr,
442 IF2DT(ip->i_inode.i_mode), ip->i_flags,
443 (unsigned int)ip->i_diskflags,
444 (unsigned long long)i_size_read(&ip->i_inode));
445 return 0;
446}
447
448/**
449 * trans_go_sync - promote/demote the transaction glock
450 * @gl: the glock
451 * @state: the requested state
452 * @flags:
453 *
454 */
455
456static void trans_go_sync(struct gfs2_glock *gl)
457{
458 struct gfs2_sbd *sdp = gl->gl_sbd;
459
460 if (gl->gl_state != LM_ST_UNLOCKED &&
461 test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
462 gfs2_meta_syncfs(sdp);
463 gfs2_log_shutdown(sdp);
464 }
465}
466
467/**
468 * trans_go_xmote_bh - After promoting/demoting the transaction glock
469 * @gl: the glock
470 *
471 */
472
473static int trans_go_xmote_bh(struct gfs2_glock *gl, struct gfs2_holder *gh)
474{
475 struct gfs2_sbd *sdp = gl->gl_sbd;
476 struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
477 struct gfs2_glock *j_gl = ip->i_gl;
478 struct gfs2_log_header_host head;
479 int error;
480
481 if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
482 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
483
484 error = gfs2_find_jhead(sdp->sd_jdesc, &head);
485 if (error)
486 gfs2_consist(sdp);
487 if (!(head.lh_flags & GFS2_LOG_HEAD_UNMOUNT))
488 gfs2_consist(sdp);
489
490 /* Initialize some head of the log stuff */
491 if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) {
492 sdp->sd_log_sequence = head.lh_sequence + 1;
493 gfs2_log_pointers_init(sdp, head.lh_blkno);
494 }
495 }
496 return 0;
497}
498
499/**
500 * trans_go_demote_ok
501 * @gl: the glock
502 *
503 * Always returns 0
504 */
505
506static int trans_go_demote_ok(const struct gfs2_glock *gl)
507{
508 return 0;
509}
510
511/**
512 * iopen_go_callback - schedule the dcache entry for the inode to be deleted
513 * @gl: the glock
514 *
515 * gl_spin lock is held while calling this
516 */
517static void iopen_go_callback(struct gfs2_glock *gl)
518{
519 struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
520 struct gfs2_sbd *sdp = gl->gl_sbd;
521
522 if (sdp->sd_vfs->s_flags & MS_RDONLY)
523 return;
524
525 if (gl->gl_demote_state == LM_ST_UNLOCKED &&
526 gl->gl_state == LM_ST_SHARED && ip) {
527 gfs2_glock_hold(gl);
528 if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
529 gfs2_glock_put_nolock(gl);
530 }
531}
532
533const struct gfs2_glock_operations gfs2_meta_glops = {
534 .go_type = LM_TYPE_META,
535};
536
537const struct gfs2_glock_operations gfs2_inode_glops = {
538 .go_xmote_th = inode_go_sync,
539 .go_inval = inode_go_inval,
540 .go_demote_ok = inode_go_demote_ok,
541 .go_lock = inode_go_lock,
542 .go_dump = inode_go_dump,
543 .go_type = LM_TYPE_INODE,
544 .go_flags = GLOF_ASPACE,
545};
546
547const struct gfs2_glock_operations gfs2_rgrp_glops = {
548 .go_xmote_th = rgrp_go_sync,
549 .go_inval = rgrp_go_inval,
550 .go_lock = gfs2_rgrp_go_lock,
551 .go_unlock = gfs2_rgrp_go_unlock,
552 .go_dump = gfs2_rgrp_dump,
553 .go_type = LM_TYPE_RGRP,
554 .go_flags = GLOF_ASPACE,
555};
556
557const struct gfs2_glock_operations gfs2_trans_glops = {
558 .go_xmote_th = trans_go_sync,
559 .go_xmote_bh = trans_go_xmote_bh,
560 .go_demote_ok = trans_go_demote_ok,
561 .go_type = LM_TYPE_NONDISK,
562};
563
564const struct gfs2_glock_operations gfs2_iopen_glops = {
565 .go_type = LM_TYPE_IOPEN,
566 .go_callback = iopen_go_callback,
567};
568
569const struct gfs2_glock_operations gfs2_flock_glops = {
570 .go_type = LM_TYPE_FLOCK,
571};
572
573const struct gfs2_glock_operations gfs2_nondisk_glops = {
574 .go_type = LM_TYPE_NONDISK,
575};
576
577const struct gfs2_glock_operations gfs2_quota_glops = {
578 .go_type = LM_TYPE_QUOTA,
579};
580
581const struct gfs2_glock_operations gfs2_journal_glops = {
582 .go_type = LM_TYPE_JOURNAL,
583};
584
585const struct gfs2_glock_operations *gfs2_glops_list[] = {
586 [LM_TYPE_META] = &gfs2_meta_glops,
587 [LM_TYPE_INODE] = &gfs2_inode_glops,
588 [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
589 [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
590 [LM_TYPE_FLOCK] = &gfs2_flock_glops,
591 [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
592 [LM_TYPE_QUOTA] = &gfs2_quota_glops,
593 [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
594};
595
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
30struct workqueue_struct *gfs2_freeze_wq;
31
32extern struct workqueue_struct *gfs2_control_wq;
33
34static void gfs2_ail_error(struct gfs2_glock *gl, const struct buffer_head *bh)
35{
36 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
37
38 fs_err(sdp,
39 "AIL buffer %p: blocknr %llu state 0x%08lx mapping %p page "
40 "state 0x%lx\n",
41 bh, (unsigned long long)bh->b_blocknr, bh->b_state,
42 bh->b_folio->mapping, bh->b_folio->flags);
43 fs_err(sdp, "AIL glock %u:%llu mapping %p\n",
44 gl->gl_name.ln_type, gl->gl_name.ln_number,
45 gfs2_glock2aspace(gl));
46 gfs2_lm(sdp, "AIL error\n");
47 gfs2_withdraw_delayed(sdp);
48}
49
50/**
51 * __gfs2_ail_flush - remove all buffers for a given lock from the AIL
52 * @gl: the glock
53 * @fsync: set when called from fsync (not all buffers will be clean)
54 * @nr_revokes: Number of buffers to revoke
55 *
56 * None of the buffers should be dirty, locked, or pinned.
57 */
58
59static void __gfs2_ail_flush(struct gfs2_glock *gl, bool fsync,
60 unsigned int nr_revokes)
61{
62 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
63 struct list_head *head = &gl->gl_ail_list;
64 struct gfs2_bufdata *bd, *tmp;
65 struct buffer_head *bh;
66 const unsigned long b_state = (1UL << BH_Dirty)|(1UL << BH_Pinned)|(1UL << BH_Lock);
67
68 gfs2_log_lock(sdp);
69 spin_lock(&sdp->sd_ail_lock);
70 list_for_each_entry_safe_reverse(bd, tmp, head, bd_ail_gl_list) {
71 if (nr_revokes == 0)
72 break;
73 bh = bd->bd_bh;
74 if (bh->b_state & b_state) {
75 if (fsync)
76 continue;
77 gfs2_ail_error(gl, bh);
78 }
79 gfs2_trans_add_revoke(sdp, bd);
80 nr_revokes--;
81 }
82 GLOCK_BUG_ON(gl, !fsync && atomic_read(&gl->gl_ail_count));
83 spin_unlock(&sdp->sd_ail_lock);
84 gfs2_log_unlock(sdp);
85}
86
87
88static int gfs2_ail_empty_gl(struct gfs2_glock *gl)
89{
90 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
91 struct gfs2_trans tr;
92 unsigned int revokes;
93 int ret = 0;
94
95 revokes = atomic_read(&gl->gl_ail_count);
96
97 if (!revokes) {
98 bool have_revokes;
99 bool log_in_flight;
100
101 /*
102 * We have nothing on the ail, but there could be revokes on
103 * the sdp revoke queue, in which case, we still want to flush
104 * the log and wait for it to finish.
105 *
106 * If the sdp revoke list is empty too, we might still have an
107 * io outstanding for writing revokes, so we should wait for
108 * it before returning.
109 *
110 * If none of these conditions are true, our revokes are all
111 * flushed and we can return.
112 */
113 gfs2_log_lock(sdp);
114 have_revokes = !list_empty(&sdp->sd_log_revokes);
115 log_in_flight = atomic_read(&sdp->sd_log_in_flight);
116 gfs2_log_unlock(sdp);
117 if (have_revokes)
118 goto flush;
119 if (log_in_flight)
120 log_flush_wait(sdp);
121 return 0;
122 }
123
124 memset(&tr, 0, sizeof(tr));
125 set_bit(TR_ONSTACK, &tr.tr_flags);
126 ret = __gfs2_trans_begin(&tr, sdp, 0, revokes, _RET_IP_);
127 if (ret) {
128 fs_err(sdp, "Transaction error %d: Unable to write revokes.", ret);
129 goto flush;
130 }
131 __gfs2_ail_flush(gl, 0, revokes);
132 gfs2_trans_end(sdp);
133
134flush:
135 if (!ret)
136 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL |
137 GFS2_LFC_AIL_EMPTY_GL);
138 return ret;
139}
140
141void gfs2_ail_flush(struct gfs2_glock *gl, bool fsync)
142{
143 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
144 unsigned int revokes = atomic_read(&gl->gl_ail_count);
145 int ret;
146
147 if (!revokes)
148 return;
149
150 ret = gfs2_trans_begin(sdp, 0, revokes);
151 if (ret)
152 return;
153 __gfs2_ail_flush(gl, fsync, revokes);
154 gfs2_trans_end(sdp);
155 gfs2_log_flush(sdp, NULL, GFS2_LOG_HEAD_FLUSH_NORMAL |
156 GFS2_LFC_AIL_FLUSH);
157}
158
159/**
160 * gfs2_rgrp_metasync - sync out the metadata of a resource group
161 * @gl: the glock protecting the resource group
162 *
163 */
164
165static int gfs2_rgrp_metasync(struct gfs2_glock *gl)
166{
167 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
168 struct address_space *metamapping = &sdp->sd_aspace;
169 struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
170 const unsigned bsize = sdp->sd_sb.sb_bsize;
171 loff_t start = (rgd->rd_addr * bsize) & PAGE_MASK;
172 loff_t end = PAGE_ALIGN((rgd->rd_addr + rgd->rd_length) * bsize) - 1;
173 int error;
174
175 filemap_fdatawrite_range(metamapping, start, end);
176 error = filemap_fdatawait_range(metamapping, start, end);
177 WARN_ON_ONCE(error && !gfs2_withdrawing_or_withdrawn(sdp));
178 mapping_set_error(metamapping, error);
179 if (error)
180 gfs2_io_error(sdp);
181 return error;
182}
183
184/**
185 * rgrp_go_sync - sync out the metadata for this glock
186 * @gl: the glock
187 *
188 * Called when demoting or unlocking an EX glock. We must flush
189 * to disk all dirty buffers/pages relating to this glock, and must not
190 * return to caller to demote/unlock the glock until I/O is complete.
191 */
192
193static int rgrp_go_sync(struct gfs2_glock *gl)
194{
195 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
196 struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
197 int error;
198
199 if (!rgd || !test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
200 return 0;
201 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
202
203 gfs2_log_flush(sdp, gl, GFS2_LOG_HEAD_FLUSH_NORMAL |
204 GFS2_LFC_RGRP_GO_SYNC);
205 error = gfs2_rgrp_metasync(gl);
206 if (!error)
207 error = gfs2_ail_empty_gl(gl);
208 gfs2_free_clones(rgd);
209 return error;
210}
211
212/**
213 * rgrp_go_inval - invalidate the metadata for this glock
214 * @gl: the glock
215 * @flags:
216 *
217 * We never used LM_ST_DEFERRED with resource groups, so that we
218 * should always see the metadata flag set here.
219 *
220 */
221
222static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
223{
224 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
225 struct address_space *mapping = &sdp->sd_aspace;
226 struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl);
227 const unsigned bsize = sdp->sd_sb.sb_bsize;
228 loff_t start, end;
229
230 if (!rgd)
231 return;
232 start = (rgd->rd_addr * bsize) & PAGE_MASK;
233 end = PAGE_ALIGN((rgd->rd_addr + rgd->rd_length) * bsize) - 1;
234 gfs2_rgrp_brelse(rgd);
235 WARN_ON_ONCE(!(flags & DIO_METADATA));
236 truncate_inode_pages_range(mapping, start, end);
237}
238
239static void gfs2_rgrp_go_dump(struct seq_file *seq, const struct gfs2_glock *gl,
240 const char *fs_id_buf)
241{
242 struct gfs2_rgrpd *rgd = gl->gl_object;
243
244 if (rgd)
245 gfs2_rgrp_dump(seq, rgd, fs_id_buf);
246}
247
248static struct gfs2_inode *gfs2_glock2inode(struct gfs2_glock *gl)
249{
250 struct gfs2_inode *ip;
251
252 spin_lock(&gl->gl_lockref.lock);
253 ip = gl->gl_object;
254 if (ip)
255 set_bit(GIF_GLOP_PENDING, &ip->i_flags);
256 spin_unlock(&gl->gl_lockref.lock);
257 return ip;
258}
259
260struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl)
261{
262 struct gfs2_rgrpd *rgd;
263
264 spin_lock(&gl->gl_lockref.lock);
265 rgd = gl->gl_object;
266 spin_unlock(&gl->gl_lockref.lock);
267
268 return rgd;
269}
270
271static void gfs2_clear_glop_pending(struct gfs2_inode *ip)
272{
273 if (!ip)
274 return;
275
276 clear_bit_unlock(GIF_GLOP_PENDING, &ip->i_flags);
277 wake_up_bit(&ip->i_flags, GIF_GLOP_PENDING);
278}
279
280/**
281 * gfs2_inode_metasync - sync out the metadata of an inode
282 * @gl: the glock protecting the inode
283 *
284 */
285int gfs2_inode_metasync(struct gfs2_glock *gl)
286{
287 struct address_space *metamapping = gfs2_glock2aspace(gl);
288 int error;
289
290 filemap_fdatawrite(metamapping);
291 error = filemap_fdatawait(metamapping);
292 if (error)
293 gfs2_io_error(gl->gl_name.ln_sbd);
294 return error;
295}
296
297/**
298 * inode_go_sync - Sync the dirty metadata of an inode
299 * @gl: the glock protecting the inode
300 *
301 */
302
303static int inode_go_sync(struct gfs2_glock *gl)
304{
305 struct gfs2_inode *ip = gfs2_glock2inode(gl);
306 int isreg = ip && S_ISREG(ip->i_inode.i_mode);
307 struct address_space *metamapping = gfs2_glock2aspace(gl);
308 int error = 0, ret;
309
310 if (isreg) {
311 if (test_and_clear_bit(GIF_SW_PAGED, &ip->i_flags))
312 unmap_shared_mapping_range(ip->i_inode.i_mapping, 0, 0);
313 inode_dio_wait(&ip->i_inode);
314 }
315 if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
316 goto out;
317
318 GLOCK_BUG_ON(gl, gl->gl_state != LM_ST_EXCLUSIVE);
319
320 gfs2_log_flush(gl->gl_name.ln_sbd, gl, GFS2_LOG_HEAD_FLUSH_NORMAL |
321 GFS2_LFC_INODE_GO_SYNC);
322 filemap_fdatawrite(metamapping);
323 if (isreg) {
324 struct address_space *mapping = ip->i_inode.i_mapping;
325 filemap_fdatawrite(mapping);
326 error = filemap_fdatawait(mapping);
327 mapping_set_error(mapping, error);
328 }
329 ret = gfs2_inode_metasync(gl);
330 if (!error)
331 error = ret;
332 ret = gfs2_ail_empty_gl(gl);
333 if (!error)
334 error = ret;
335 /*
336 * Writeback of the data mapping may cause the dirty flag to be set
337 * so we have to clear it again here.
338 */
339 smp_mb__before_atomic();
340 clear_bit(GLF_DIRTY, &gl->gl_flags);
341
342out:
343 gfs2_clear_glop_pending(ip);
344 return error;
345}
346
347/**
348 * inode_go_inval - prepare a inode glock to be released
349 * @gl: the glock
350 * @flags:
351 *
352 * Normally we invalidate everything, but if we are moving into
353 * LM_ST_DEFERRED from LM_ST_SHARED or LM_ST_EXCLUSIVE then we
354 * can keep hold of the metadata, since it won't have changed.
355 *
356 */
357
358static void inode_go_inval(struct gfs2_glock *gl, int flags)
359{
360 struct gfs2_inode *ip = gfs2_glock2inode(gl);
361
362 if (flags & DIO_METADATA) {
363 struct address_space *mapping = gfs2_glock2aspace(gl);
364 truncate_inode_pages(mapping, 0);
365 if (ip) {
366 set_bit(GLF_INSTANTIATE_NEEDED, &gl->gl_flags);
367 forget_all_cached_acls(&ip->i_inode);
368 security_inode_invalidate_secctx(&ip->i_inode);
369 gfs2_dir_hash_inval(ip);
370 }
371 }
372
373 if (ip == GFS2_I(gl->gl_name.ln_sbd->sd_rindex)) {
374 gfs2_log_flush(gl->gl_name.ln_sbd, NULL,
375 GFS2_LOG_HEAD_FLUSH_NORMAL |
376 GFS2_LFC_INODE_GO_INVAL);
377 gl->gl_name.ln_sbd->sd_rindex_uptodate = 0;
378 }
379 if (ip && S_ISREG(ip->i_inode.i_mode))
380 truncate_inode_pages(ip->i_inode.i_mapping, 0);
381
382 gfs2_clear_glop_pending(ip);
383}
384
385/**
386 * inode_go_demote_ok - Check to see if it's ok to unlock an inode glock
387 * @gl: the glock
388 *
389 * Returns: 1 if it's ok
390 */
391
392static int inode_go_demote_ok(const struct gfs2_glock *gl)
393{
394 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
395
396 if (sdp->sd_jindex == gl->gl_object || sdp->sd_rindex == gl->gl_object)
397 return 0;
398
399 return 1;
400}
401
402static int gfs2_dinode_in(struct gfs2_inode *ip, const void *buf)
403{
404 struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
405 const struct gfs2_dinode *str = buf;
406 struct timespec64 atime, iatime;
407 u16 height, depth;
408 umode_t mode = be32_to_cpu(str->di_mode);
409 struct inode *inode = &ip->i_inode;
410 bool is_new = inode->i_state & I_NEW;
411
412 if (unlikely(ip->i_no_addr != be64_to_cpu(str->di_num.no_addr)))
413 goto corrupt;
414 if (unlikely(!is_new && inode_wrong_type(inode, mode)))
415 goto corrupt;
416 ip->i_no_formal_ino = be64_to_cpu(str->di_num.no_formal_ino);
417 inode->i_mode = mode;
418 if (is_new) {
419 inode->i_rdev = 0;
420 switch (mode & S_IFMT) {
421 case S_IFBLK:
422 case S_IFCHR:
423 inode->i_rdev = MKDEV(be32_to_cpu(str->di_major),
424 be32_to_cpu(str->di_minor));
425 break;
426 }
427 }
428
429 i_uid_write(inode, be32_to_cpu(str->di_uid));
430 i_gid_write(inode, be32_to_cpu(str->di_gid));
431 set_nlink(inode, be32_to_cpu(str->di_nlink));
432 i_size_write(inode, be64_to_cpu(str->di_size));
433 gfs2_set_inode_blocks(inode, be64_to_cpu(str->di_blocks));
434 atime.tv_sec = be64_to_cpu(str->di_atime);
435 atime.tv_nsec = be32_to_cpu(str->di_atime_nsec);
436 iatime = inode_get_atime(inode);
437 if (timespec64_compare(&iatime, &atime) < 0)
438 inode_set_atime_to_ts(inode, atime);
439 inode_set_mtime(inode, be64_to_cpu(str->di_mtime),
440 be32_to_cpu(str->di_mtime_nsec));
441 inode_set_ctime(inode, be64_to_cpu(str->di_ctime),
442 be32_to_cpu(str->di_ctime_nsec));
443
444 ip->i_goal = be64_to_cpu(str->di_goal_meta);
445 ip->i_generation = be64_to_cpu(str->di_generation);
446
447 ip->i_diskflags = be32_to_cpu(str->di_flags);
448 ip->i_eattr = be64_to_cpu(str->di_eattr);
449 /* i_diskflags and i_eattr must be set before gfs2_set_inode_flags() */
450 gfs2_set_inode_flags(inode);
451 height = be16_to_cpu(str->di_height);
452 if (unlikely(height > sdp->sd_max_height))
453 goto corrupt;
454 ip->i_height = (u8)height;
455
456 depth = be16_to_cpu(str->di_depth);
457 if (unlikely(depth > GFS2_DIR_MAX_DEPTH))
458 goto corrupt;
459 ip->i_depth = (u8)depth;
460 ip->i_entries = be32_to_cpu(str->di_entries);
461
462 if (gfs2_is_stuffed(ip) && inode->i_size > gfs2_max_stuffed_size(ip))
463 goto corrupt;
464
465 if (S_ISREG(inode->i_mode))
466 gfs2_set_aops(inode);
467
468 return 0;
469corrupt:
470 gfs2_consist_inode(ip);
471 return -EIO;
472}
473
474/**
475 * gfs2_inode_refresh - Refresh the incore copy of the dinode
476 * @ip: The GFS2 inode
477 *
478 * Returns: errno
479 */
480
481int gfs2_inode_refresh(struct gfs2_inode *ip)
482{
483 struct buffer_head *dibh;
484 int error;
485
486 error = gfs2_meta_inode_buffer(ip, &dibh);
487 if (error)
488 return error;
489
490 error = gfs2_dinode_in(ip, dibh->b_data);
491 brelse(dibh);
492 return error;
493}
494
495/**
496 * inode_go_instantiate - read in an inode if necessary
497 * @gl: The glock
498 *
499 * Returns: errno
500 */
501
502static int inode_go_instantiate(struct gfs2_glock *gl)
503{
504 struct gfs2_inode *ip = gl->gl_object;
505
506 if (!ip) /* no inode to populate - read it in later */
507 return 0;
508
509 return gfs2_inode_refresh(ip);
510}
511
512static int inode_go_held(struct gfs2_holder *gh)
513{
514 struct gfs2_glock *gl = gh->gh_gl;
515 struct gfs2_inode *ip = gl->gl_object;
516 int error = 0;
517
518 if (!ip) /* no inode to populate - read it in later */
519 return 0;
520
521 if (gh->gh_state != LM_ST_DEFERRED)
522 inode_dio_wait(&ip->i_inode);
523
524 if ((ip->i_diskflags & GFS2_DIF_TRUNC_IN_PROG) &&
525 (gl->gl_state == LM_ST_EXCLUSIVE) &&
526 (gh->gh_state == LM_ST_EXCLUSIVE))
527 error = gfs2_truncatei_resume(ip);
528
529 return error;
530}
531
532/**
533 * inode_go_dump - print information about an inode
534 * @seq: The iterator
535 * @gl: The glock
536 * @fs_id_buf: file system id (may be empty)
537 *
538 */
539
540static void inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl,
541 const char *fs_id_buf)
542{
543 struct gfs2_inode *ip = gl->gl_object;
544 const struct inode *inode = &ip->i_inode;
545
546 if (ip == NULL)
547 return;
548
549 gfs2_print_dbg(seq, "%s I: n:%llu/%llu t:%u f:0x%02lx d:0x%08x s:%llu "
550 "p:%lu\n", fs_id_buf,
551 (unsigned long long)ip->i_no_formal_ino,
552 (unsigned long long)ip->i_no_addr,
553 IF2DT(inode->i_mode), ip->i_flags,
554 (unsigned int)ip->i_diskflags,
555 (unsigned long long)i_size_read(inode),
556 inode->i_data.nrpages);
557}
558
559/**
560 * freeze_go_callback - A cluster node is requesting a freeze
561 * @gl: the glock
562 * @remote: true if this came from a different cluster node
563 */
564
565static void freeze_go_callback(struct gfs2_glock *gl, bool remote)
566{
567 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
568 struct super_block *sb = sdp->sd_vfs;
569
570 if (!remote ||
571 (gl->gl_state != LM_ST_SHARED &&
572 gl->gl_state != LM_ST_UNLOCKED) ||
573 gl->gl_demote_state != LM_ST_UNLOCKED)
574 return;
575
576 /*
577 * Try to get an active super block reference to prevent racing with
578 * unmount (see super_trylock_shared()). But note that unmount isn't
579 * the only place where a write lock on s_umount is taken, and we can
580 * fail here because of things like remount as well.
581 */
582 if (down_read_trylock(&sb->s_umount)) {
583 atomic_inc(&sb->s_active);
584 up_read(&sb->s_umount);
585 if (!queue_work(gfs2_freeze_wq, &sdp->sd_freeze_work))
586 deactivate_super(sb);
587 }
588}
589
590/**
591 * freeze_go_xmote_bh - After promoting/demoting the freeze glock
592 * @gl: the glock
593 */
594static int freeze_go_xmote_bh(struct gfs2_glock *gl)
595{
596 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
597 struct gfs2_inode *ip = GFS2_I(sdp->sd_jdesc->jd_inode);
598 struct gfs2_glock *j_gl = ip->i_gl;
599 struct gfs2_log_header_host head;
600 int error;
601
602 if (test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)) {
603 j_gl->gl_ops->go_inval(j_gl, DIO_METADATA);
604
605 error = gfs2_find_jhead(sdp->sd_jdesc, &head, false);
606 if (gfs2_assert_withdraw_delayed(sdp, !error))
607 return error;
608 if (gfs2_assert_withdraw_delayed(sdp, head.lh_flags &
609 GFS2_LOG_HEAD_UNMOUNT))
610 return -EIO;
611 sdp->sd_log_sequence = head.lh_sequence + 1;
612 gfs2_log_pointers_init(sdp, head.lh_blkno);
613 }
614 return 0;
615}
616
617/**
618 * iopen_go_callback - schedule the dcache entry for the inode to be deleted
619 * @gl: the glock
620 * @remote: true if this came from a different cluster node
621 *
622 * gl_lockref.lock lock is held while calling this
623 */
624static void iopen_go_callback(struct gfs2_glock *gl, bool remote)
625{
626 struct gfs2_inode *ip = gl->gl_object;
627 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
628
629 if (!remote || sb_rdonly(sdp->sd_vfs) ||
630 test_bit(SDF_KILL, &sdp->sd_flags))
631 return;
632
633 if (gl->gl_demote_state == LM_ST_UNLOCKED &&
634 gl->gl_state == LM_ST_SHARED && ip) {
635 gl->gl_lockref.count++;
636 if (!gfs2_queue_try_to_evict(gl))
637 gl->gl_lockref.count--;
638 }
639}
640
641/**
642 * inode_go_free - wake up anyone waiting for dlm's unlock ast to free it
643 * @gl: glock being freed
644 *
645 * For now, this is only used for the journal inode glock. In withdraw
646 * situations, we need to wait for the glock to be freed so that we know
647 * other nodes may proceed with recovery / journal replay.
648 */
649static void inode_go_free(struct gfs2_glock *gl)
650{
651 /* Note that we cannot reference gl_object because it's already set
652 * to NULL by this point in its lifecycle. */
653 if (!test_bit(GLF_FREEING, &gl->gl_flags))
654 return;
655 clear_bit_unlock(GLF_FREEING, &gl->gl_flags);
656 wake_up_bit(&gl->gl_flags, GLF_FREEING);
657}
658
659/**
660 * nondisk_go_callback - used to signal when a node did a withdraw
661 * @gl: the nondisk glock
662 * @remote: true if this came from a different cluster node
663 *
664 */
665static void nondisk_go_callback(struct gfs2_glock *gl, bool remote)
666{
667 struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
668
669 /* Ignore the callback unless it's from another node, and it's the
670 live lock. */
671 if (!remote || gl->gl_name.ln_number != GFS2_LIVE_LOCK)
672 return;
673
674 /* First order of business is to cancel the demote request. We don't
675 * really want to demote a nondisk glock. At best it's just to inform
676 * us of another node's withdraw. We'll keep it in SH mode. */
677 clear_bit(GLF_DEMOTE, &gl->gl_flags);
678 clear_bit(GLF_PENDING_DEMOTE, &gl->gl_flags);
679
680 /* Ignore the unlock if we're withdrawn, unmounting, or in recovery. */
681 if (test_bit(SDF_NORECOVERY, &sdp->sd_flags) ||
682 test_bit(SDF_WITHDRAWN, &sdp->sd_flags) ||
683 test_bit(SDF_REMOTE_WITHDRAW, &sdp->sd_flags))
684 return;
685
686 /* We only care when a node wants us to unlock, because that means
687 * they want a journal recovered. */
688 if (gl->gl_demote_state != LM_ST_UNLOCKED)
689 return;
690
691 if (sdp->sd_args.ar_spectator) {
692 fs_warn(sdp, "Spectator node cannot recover journals.\n");
693 return;
694 }
695
696 fs_warn(sdp, "Some node has withdrawn; checking for recovery.\n");
697 set_bit(SDF_REMOTE_WITHDRAW, &sdp->sd_flags);
698 /*
699 * We can't call remote_withdraw directly here or gfs2_recover_journal
700 * because this is called from the glock unlock function and the
701 * remote_withdraw needs to enqueue and dequeue the same "live" glock
702 * we were called from. So we queue it to the control work queue in
703 * lock_dlm.
704 */
705 queue_delayed_work(gfs2_control_wq, &sdp->sd_control_work, 0);
706}
707
708const struct gfs2_glock_operations gfs2_meta_glops = {
709 .go_type = LM_TYPE_META,
710 .go_flags = GLOF_NONDISK,
711};
712
713const struct gfs2_glock_operations gfs2_inode_glops = {
714 .go_sync = inode_go_sync,
715 .go_inval = inode_go_inval,
716 .go_demote_ok = inode_go_demote_ok,
717 .go_instantiate = inode_go_instantiate,
718 .go_held = inode_go_held,
719 .go_dump = inode_go_dump,
720 .go_type = LM_TYPE_INODE,
721 .go_flags = GLOF_ASPACE | GLOF_LRU | GLOF_LVB,
722 .go_free = inode_go_free,
723};
724
725const struct gfs2_glock_operations gfs2_rgrp_glops = {
726 .go_sync = rgrp_go_sync,
727 .go_inval = rgrp_go_inval,
728 .go_instantiate = gfs2_rgrp_go_instantiate,
729 .go_dump = gfs2_rgrp_go_dump,
730 .go_type = LM_TYPE_RGRP,
731 .go_flags = GLOF_LVB,
732};
733
734const struct gfs2_glock_operations gfs2_freeze_glops = {
735 .go_xmote_bh = freeze_go_xmote_bh,
736 .go_callback = freeze_go_callback,
737 .go_type = LM_TYPE_NONDISK,
738 .go_flags = GLOF_NONDISK,
739};
740
741const struct gfs2_glock_operations gfs2_iopen_glops = {
742 .go_type = LM_TYPE_IOPEN,
743 .go_callback = iopen_go_callback,
744 .go_dump = inode_go_dump,
745 .go_flags = GLOF_LRU | GLOF_NONDISK,
746 .go_subclass = 1,
747};
748
749const struct gfs2_glock_operations gfs2_flock_glops = {
750 .go_type = LM_TYPE_FLOCK,
751 .go_flags = GLOF_LRU | GLOF_NONDISK,
752};
753
754const struct gfs2_glock_operations gfs2_nondisk_glops = {
755 .go_type = LM_TYPE_NONDISK,
756 .go_flags = GLOF_NONDISK,
757 .go_callback = nondisk_go_callback,
758};
759
760const struct gfs2_glock_operations gfs2_quota_glops = {
761 .go_type = LM_TYPE_QUOTA,
762 .go_flags = GLOF_LVB | GLOF_LRU | GLOF_NONDISK,
763};
764
765const struct gfs2_glock_operations gfs2_journal_glops = {
766 .go_type = LM_TYPE_JOURNAL,
767 .go_flags = GLOF_NONDISK,
768};
769
770const struct gfs2_glock_operations *gfs2_glops_list[] = {
771 [LM_TYPE_META] = &gfs2_meta_glops,
772 [LM_TYPE_INODE] = &gfs2_inode_glops,
773 [LM_TYPE_RGRP] = &gfs2_rgrp_glops,
774 [LM_TYPE_IOPEN] = &gfs2_iopen_glops,
775 [LM_TYPE_FLOCK] = &gfs2_flock_glops,
776 [LM_TYPE_NONDISK] = &gfs2_nondisk_glops,
777 [LM_TYPE_QUOTA] = &gfs2_quota_glops,
778 [LM_TYPE_JOURNAL] = &gfs2_journal_glops,
779};
780