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10#include <linux/sched.h>
11#include <linux/slab.h>
12#include <linux/spinlock.h>
13#include <linux/completion.h>
14#include <linux/buffer_head.h>
15#include <linux/gfs2_ondisk.h>
16#include <linux/bio.h>
17#include <linux/fs.h>
18
19#include "gfs2.h"
20#include "incore.h"
21#include "inode.h"
22#include "glock.h"
23#include "log.h"
24#include "lops.h"
25#include "meta_io.h"
26#include "recovery.h"
27#include "rgrp.h"
28#include "trans.h"
29#include "util.h"
30#include "trace_gfs2.h"
31
32
33
34
35
36
37
38
39static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh)
40{
41 struct gfs2_bufdata *bd;
42
43 gfs2_assert_withdraw(sdp, test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags));
44
45 clear_buffer_dirty(bh);
46 if (test_set_buffer_pinned(bh))
47 gfs2_assert_withdraw(sdp, 0);
48 if (!buffer_uptodate(bh))
49 gfs2_io_error_bh(sdp, bh);
50 bd = bh->b_private;
51
52
53
54 if (bd->bd_ail)
55 list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list);
56 get_bh(bh);
57 atomic_inc(&sdp->sd_log_pinned);
58 trace_gfs2_pin(bd, 1);
59}
60
61
62
63
64
65
66
67
68
69static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh,
70 struct gfs2_ail *ai)
71{
72 struct gfs2_bufdata *bd = bh->b_private;
73
74 gfs2_assert_withdraw(sdp, buffer_uptodate(bh));
75
76 if (!buffer_pinned(bh))
77 gfs2_assert_withdraw(sdp, 0);
78
79 lock_buffer(bh);
80 mark_buffer_dirty(bh);
81 clear_buffer_pinned(bh);
82
83 gfs2_log_lock(sdp);
84 if (bd->bd_ail) {
85 list_del(&bd->bd_ail_st_list);
86 brelse(bh);
87 } else {
88 struct gfs2_glock *gl = bd->bd_gl;
89 list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list);
90 atomic_inc(&gl->gl_ail_count);
91 }
92 bd->bd_ail = ai;
93 list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list);
94 clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
95 trace_gfs2_pin(bd, 0);
96 gfs2_log_unlock(sdp);
97 unlock_buffer(bh);
98 atomic_dec(&sdp->sd_log_pinned);
99}
100
101
102static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh)
103{
104 return (struct gfs2_log_descriptor *)bh->b_data;
105}
106
107static inline __be64 *bh_log_ptr(struct buffer_head *bh)
108{
109 struct gfs2_log_descriptor *ld = bh_log_desc(bh);
110 return (__force __be64 *)(ld + 1);
111}
112
113static inline __be64 *bh_ptr_end(struct buffer_head *bh)
114{
115 return (__force __be64 *)(bh->b_data + bh->b_size);
116}
117
118
119static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type)
120{
121 struct buffer_head *bh = gfs2_log_get_buf(sdp);
122 struct gfs2_log_descriptor *ld = bh_log_desc(bh);
123 ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
124 ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD);
125 ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD);
126 ld->ld_type = cpu_to_be32(ld_type);
127 ld->ld_length = 0;
128 ld->ld_data1 = 0;
129 ld->ld_data2 = 0;
130 memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
131 return bh;
132}
133
134static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
135{
136 struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
137 struct gfs2_meta_header *mh;
138 struct gfs2_trans *tr;
139
140 lock_buffer(bd->bd_bh);
141 gfs2_log_lock(sdp);
142 if (!list_empty(&bd->bd_list_tr))
143 goto out;
144 tr = current->journal_info;
145 tr->tr_touched = 1;
146 tr->tr_num_buf++;
147 list_add(&bd->bd_list_tr, &tr->tr_list_buf);
148 if (!list_empty(&le->le_list))
149 goto out;
150 set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
151 set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
152 gfs2_meta_check(sdp, bd->bd_bh);
153 gfs2_pin(sdp, bd->bd_bh);
154 mh = (struct gfs2_meta_header *)bd->bd_bh->b_data;
155 mh->__pad0 = cpu_to_be64(0);
156 mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
157 sdp->sd_log_num_buf++;
158 list_add(&le->le_list, &sdp->sd_log_le_buf);
159 tr->tr_num_buf_new++;
160out:
161 gfs2_log_unlock(sdp);
162 unlock_buffer(bd->bd_bh);
163}
164
165static void buf_lo_before_commit(struct gfs2_sbd *sdp)
166{
167 struct buffer_head *bh;
168 struct gfs2_log_descriptor *ld;
169 struct gfs2_bufdata *bd1 = NULL, *bd2;
170 unsigned int total;
171 unsigned int limit;
172 unsigned int num;
173 unsigned n;
174 __be64 *ptr;
175
176 limit = buf_limit(sdp);
177
178
179 gfs2_log_lock(sdp);
180 total = sdp->sd_log_num_buf;
181 bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list);
182 while(total) {
183 num = total;
184 if (total > limit)
185 num = limit;
186 gfs2_log_unlock(sdp);
187 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA);
188 gfs2_log_lock(sdp);
189 ld = bh_log_desc(bh);
190 ptr = bh_log_ptr(bh);
191 ld->ld_length = cpu_to_be32(num + 1);
192 ld->ld_data1 = cpu_to_be32(num);
193
194 n = 0;
195 list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf,
196 bd_le.le_list) {
197 *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr);
198 if (++n >= num)
199 break;
200 }
201
202 gfs2_log_unlock(sdp);
203 submit_bh(WRITE_SYNC_PLUG, bh);
204 gfs2_log_lock(sdp);
205
206 n = 0;
207 list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf,
208 bd_le.le_list) {
209 get_bh(bd2->bd_bh);
210 gfs2_log_unlock(sdp);
211 lock_buffer(bd2->bd_bh);
212 bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
213 submit_bh(WRITE_SYNC_PLUG, bh);
214 gfs2_log_lock(sdp);
215 if (++n >= num)
216 break;
217 }
218
219 BUG_ON(total < num);
220 total -= num;
221 }
222 gfs2_log_unlock(sdp);
223}
224
225static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
226{
227 struct list_head *head = &sdp->sd_log_le_buf;
228 struct gfs2_bufdata *bd;
229
230 while (!list_empty(head)) {
231 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
232 list_del_init(&bd->bd_le.le_list);
233 sdp->sd_log_num_buf--;
234
235 gfs2_unpin(sdp, bd->bd_bh, ai);
236 }
237 gfs2_assert_warn(sdp, !sdp->sd_log_num_buf);
238}
239
240static void buf_lo_before_scan(struct gfs2_jdesc *jd,
241 struct gfs2_log_header_host *head, int pass)
242{
243 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
244
245 if (pass != 0)
246 return;
247
248 sdp->sd_found_blocks = 0;
249 sdp->sd_replayed_blocks = 0;
250}
251
252static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
253 struct gfs2_log_descriptor *ld, __be64 *ptr,
254 int pass)
255{
256 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
257 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
258 struct gfs2_glock *gl = ip->i_gl;
259 unsigned int blks = be32_to_cpu(ld->ld_data1);
260 struct buffer_head *bh_log, *bh_ip;
261 u64 blkno;
262 int error = 0;
263
264 if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA)
265 return 0;
266
267 gfs2_replay_incr_blk(sdp, &start);
268
269 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
270 blkno = be64_to_cpu(*ptr++);
271
272 sdp->sd_found_blocks++;
273
274 if (gfs2_revoke_check(sdp, blkno, start))
275 continue;
276
277 error = gfs2_replay_read_block(jd, start, &bh_log);
278 if (error)
279 return error;
280
281 bh_ip = gfs2_meta_new(gl, blkno);
282 memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
283
284 if (gfs2_meta_check(sdp, bh_ip))
285 error = -EIO;
286 else
287 mark_buffer_dirty(bh_ip);
288
289 brelse(bh_log);
290 brelse(bh_ip);
291
292 if (error)
293 break;
294
295 sdp->sd_replayed_blocks++;
296 }
297
298 return error;
299}
300
301static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
302{
303 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
304 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
305
306 if (error) {
307 gfs2_meta_sync(ip->i_gl);
308 return;
309 }
310 if (pass != 1)
311 return;
312
313 gfs2_meta_sync(ip->i_gl);
314
315 fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n",
316 jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
317}
318
319static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
320{
321 struct gfs2_trans *tr;
322
323 tr = current->journal_info;
324 tr->tr_touched = 1;
325 tr->tr_num_revoke++;
326 sdp->sd_log_num_revoke++;
327 list_add(&le->le_list, &sdp->sd_log_le_revoke);
328}
329
330static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
331{
332 struct gfs2_log_descriptor *ld;
333 struct gfs2_meta_header *mh;
334 struct buffer_head *bh;
335 unsigned int offset;
336 struct list_head *head = &sdp->sd_log_le_revoke;
337 struct gfs2_bufdata *bd;
338
339 if (!sdp->sd_log_num_revoke)
340 return;
341
342 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE);
343 ld = bh_log_desc(bh);
344 ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke,
345 sizeof(u64)));
346 ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke);
347 offset = sizeof(struct gfs2_log_descriptor);
348
349 while (!list_empty(head)) {
350 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
351 list_del_init(&bd->bd_le.le_list);
352 sdp->sd_log_num_revoke--;
353
354 if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) {
355 submit_bh(WRITE_SYNC_PLUG, bh);
356
357 bh = gfs2_log_get_buf(sdp);
358 mh = (struct gfs2_meta_header *)bh->b_data;
359 mh->mh_magic = cpu_to_be32(GFS2_MAGIC);
360 mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB);
361 mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB);
362 offset = sizeof(struct gfs2_meta_header);
363 }
364
365 *(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno);
366 kmem_cache_free(gfs2_bufdata_cachep, bd);
367
368 offset += sizeof(u64);
369 }
370 gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
371
372 submit_bh(WRITE_SYNC_PLUG, bh);
373}
374
375static void revoke_lo_before_scan(struct gfs2_jdesc *jd,
376 struct gfs2_log_header_host *head, int pass)
377{
378 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
379
380 if (pass != 0)
381 return;
382
383 sdp->sd_found_revokes = 0;
384 sdp->sd_replay_tail = head->lh_tail;
385}
386
387static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
388 struct gfs2_log_descriptor *ld, __be64 *ptr,
389 int pass)
390{
391 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
392 unsigned int blks = be32_to_cpu(ld->ld_length);
393 unsigned int revokes = be32_to_cpu(ld->ld_data1);
394 struct buffer_head *bh;
395 unsigned int offset;
396 u64 blkno;
397 int first = 1;
398 int error;
399
400 if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE)
401 return 0;
402
403 offset = sizeof(struct gfs2_log_descriptor);
404
405 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
406 error = gfs2_replay_read_block(jd, start, &bh);
407 if (error)
408 return error;
409
410 if (!first)
411 gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB);
412
413 while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) {
414 blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset));
415
416 error = gfs2_revoke_add(sdp, blkno, start);
417 if (error < 0) {
418 brelse(bh);
419 return error;
420 }
421 else if (error)
422 sdp->sd_found_revokes++;
423
424 if (!--revokes)
425 break;
426 offset += sizeof(u64);
427 }
428
429 brelse(bh);
430 offset = sizeof(struct gfs2_meta_header);
431 first = 0;
432 }
433
434 return 0;
435}
436
437static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
438{
439 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
440
441 if (error) {
442 gfs2_revoke_clean(sdp);
443 return;
444 }
445 if (pass != 1)
446 return;
447
448 fs_info(sdp, "jid=%u: Found %u revoke tags\n",
449 jd->jd_jid, sdp->sd_found_revokes);
450
451 gfs2_revoke_clean(sdp);
452}
453
454static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
455{
456 struct gfs2_rgrpd *rgd;
457 struct gfs2_trans *tr = current->journal_info;
458
459 tr->tr_touched = 1;
460
461 rgd = container_of(le, struct gfs2_rgrpd, rd_le);
462
463 gfs2_log_lock(sdp);
464 if (!list_empty(&le->le_list)){
465 gfs2_log_unlock(sdp);
466 return;
467 }
468 gfs2_rgrp_bh_hold(rgd);
469 sdp->sd_log_num_rg++;
470 list_add(&le->le_list, &sdp->sd_log_le_rg);
471 gfs2_log_unlock(sdp);
472}
473
474static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
475{
476 struct list_head *head = &sdp->sd_log_le_rg;
477 struct gfs2_rgrpd *rgd;
478
479 while (!list_empty(head)) {
480 rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list);
481 list_del_init(&rgd->rd_le.le_list);
482 sdp->sd_log_num_rg--;
483
484 gfs2_rgrp_repolish_clones(rgd);
485 gfs2_rgrp_bh_put(rgd);
486 }
487 gfs2_assert_warn(sdp, !sdp->sd_log_num_rg);
488}
489
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504
505
506static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
507{
508 struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
509 struct gfs2_trans *tr = current->journal_info;
510 struct address_space *mapping = bd->bd_bh->b_page->mapping;
511 struct gfs2_inode *ip = GFS2_I(mapping->host);
512
513 lock_buffer(bd->bd_bh);
514 gfs2_log_lock(sdp);
515 if (tr) {
516 if (!list_empty(&bd->bd_list_tr))
517 goto out;
518 tr->tr_touched = 1;
519 if (gfs2_is_jdata(ip)) {
520 tr->tr_num_buf++;
521 list_add(&bd->bd_list_tr, &tr->tr_list_buf);
522 }
523 }
524 if (!list_empty(&le->le_list))
525 goto out;
526
527 set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
528 set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
529 if (gfs2_is_jdata(ip)) {
530 gfs2_pin(sdp, bd->bd_bh);
531 tr->tr_num_databuf_new++;
532 sdp->sd_log_num_databuf++;
533 list_add_tail(&le->le_list, &sdp->sd_log_le_databuf);
534 } else {
535 list_add_tail(&le->le_list, &sdp->sd_log_le_ordered);
536 }
537out:
538 gfs2_log_unlock(sdp);
539 unlock_buffer(bd->bd_bh);
540}
541
542static void gfs2_check_magic(struct buffer_head *bh)
543{
544 void *kaddr;
545 __be32 *ptr;
546
547 clear_buffer_escaped(bh);
548 kaddr = kmap_atomic(bh->b_page, KM_USER0);
549 ptr = kaddr + bh_offset(bh);
550 if (*ptr == cpu_to_be32(GFS2_MAGIC))
551 set_buffer_escaped(bh);
552 kunmap_atomic(kaddr, KM_USER0);
553}
554
555static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh,
556 struct list_head *list, struct list_head *done,
557 unsigned int n)
558{
559 struct buffer_head *bh1;
560 struct gfs2_log_descriptor *ld;
561 struct gfs2_bufdata *bd;
562 __be64 *ptr;
563
564 if (!bh)
565 return;
566
567 ld = bh_log_desc(bh);
568 ld->ld_length = cpu_to_be32(n + 1);
569 ld->ld_data1 = cpu_to_be32(n);
570
571 ptr = bh_log_ptr(bh);
572
573 get_bh(bh);
574 submit_bh(WRITE_SYNC_PLUG, bh);
575 gfs2_log_lock(sdp);
576 while(!list_empty(list)) {
577 bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list);
578 list_move_tail(&bd->bd_le.le_list, done);
579 get_bh(bd->bd_bh);
580 while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) {
581 gfs2_log_incr_head(sdp);
582 ptr += 2;
583 }
584 gfs2_log_unlock(sdp);
585 lock_buffer(bd->bd_bh);
586 if (buffer_escaped(bd->bd_bh)) {
587 void *kaddr;
588 bh1 = gfs2_log_get_buf(sdp);
589 kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0);
590 memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh),
591 bh1->b_size);
592 kunmap_atomic(kaddr, KM_USER0);
593 *(__be32 *)bh1->b_data = 0;
594 clear_buffer_escaped(bd->bd_bh);
595 unlock_buffer(bd->bd_bh);
596 brelse(bd->bd_bh);
597 } else {
598 bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh);
599 }
600 submit_bh(WRITE_SYNC_PLUG, bh1);
601 gfs2_log_lock(sdp);
602 ptr += 2;
603 }
604 gfs2_log_unlock(sdp);
605 brelse(bh);
606}
607
608
609
610
611
612
613static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
614{
615 struct gfs2_bufdata *bd = NULL;
616 struct buffer_head *bh = NULL;
617 unsigned int n = 0;
618 __be64 *ptr = NULL, *end = NULL;
619 LIST_HEAD(processed);
620 LIST_HEAD(in_progress);
621
622 gfs2_log_lock(sdp);
623 while (!list_empty(&sdp->sd_log_le_databuf)) {
624 if (ptr == end) {
625 gfs2_log_unlock(sdp);
626 gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
627 n = 0;
628 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA);
629 ptr = bh_log_ptr(bh);
630 end = bh_ptr_end(bh) - 1;
631 gfs2_log_lock(sdp);
632 continue;
633 }
634 bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list);
635 list_move_tail(&bd->bd_le.le_list, &in_progress);
636 gfs2_check_magic(bd->bd_bh);
637 *ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr);
638 *ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0);
639 n++;
640 }
641 gfs2_log_unlock(sdp);
642 gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
643 gfs2_log_lock(sdp);
644 list_splice(&processed, &sdp->sd_log_le_databuf);
645 gfs2_log_unlock(sdp);
646}
647
648static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
649 struct gfs2_log_descriptor *ld,
650 __be64 *ptr, int pass)
651{
652 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
653 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
654 struct gfs2_glock *gl = ip->i_gl;
655 unsigned int blks = be32_to_cpu(ld->ld_data1);
656 struct buffer_head *bh_log, *bh_ip;
657 u64 blkno;
658 u64 esc;
659 int error = 0;
660
661 if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA)
662 return 0;
663
664 gfs2_replay_incr_blk(sdp, &start);
665 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
666 blkno = be64_to_cpu(*ptr++);
667 esc = be64_to_cpu(*ptr++);
668
669 sdp->sd_found_blocks++;
670
671 if (gfs2_revoke_check(sdp, blkno, start))
672 continue;
673
674 error = gfs2_replay_read_block(jd, start, &bh_log);
675 if (error)
676 return error;
677
678 bh_ip = gfs2_meta_new(gl, blkno);
679 memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
680
681
682 if (esc) {
683 __be32 *eptr = (__be32 *)bh_ip->b_data;
684 *eptr = cpu_to_be32(GFS2_MAGIC);
685 }
686 mark_buffer_dirty(bh_ip);
687
688 brelse(bh_log);
689 brelse(bh_ip);
690 if (error)
691 break;
692
693 sdp->sd_replayed_blocks++;
694 }
695
696 return error;
697}
698
699
700
701static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
702{
703 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
704 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
705
706 if (error) {
707 gfs2_meta_sync(ip->i_gl);
708 return;
709 }
710 if (pass != 1)
711 return;
712
713
714 gfs2_meta_sync(ip->i_gl);
715
716 fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n",
717 jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
718}
719
720static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
721{
722 struct list_head *head = &sdp->sd_log_le_databuf;
723 struct gfs2_bufdata *bd;
724
725 while (!list_empty(head)) {
726 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
727 list_del_init(&bd->bd_le.le_list);
728 sdp->sd_log_num_databuf--;
729 gfs2_unpin(sdp, bd->bd_bh, ai);
730 }
731 gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf);
732}
733
734
735const struct gfs2_log_operations gfs2_buf_lops = {
736 .lo_add = buf_lo_add,
737 .lo_before_commit = buf_lo_before_commit,
738 .lo_after_commit = buf_lo_after_commit,
739 .lo_before_scan = buf_lo_before_scan,
740 .lo_scan_elements = buf_lo_scan_elements,
741 .lo_after_scan = buf_lo_after_scan,
742 .lo_name = "buf",
743};
744
745const struct gfs2_log_operations gfs2_revoke_lops = {
746 .lo_add = revoke_lo_add,
747 .lo_before_commit = revoke_lo_before_commit,
748 .lo_before_scan = revoke_lo_before_scan,
749 .lo_scan_elements = revoke_lo_scan_elements,
750 .lo_after_scan = revoke_lo_after_scan,
751 .lo_name = "revoke",
752};
753
754const struct gfs2_log_operations gfs2_rg_lops = {
755 .lo_add = rg_lo_add,
756 .lo_after_commit = rg_lo_after_commit,
757 .lo_name = "rg",
758};
759
760const struct gfs2_log_operations gfs2_databuf_lops = {
761 .lo_add = databuf_lo_add,
762 .lo_before_commit = databuf_lo_before_commit,
763 .lo_after_commit = databuf_lo_after_commit,
764 .lo_scan_elements = databuf_lo_scan_elements,
765 .lo_after_scan = databuf_lo_after_scan,
766 .lo_name = "databuf",
767};
768
769const struct gfs2_log_operations *gfs2_log_ops[] = {
770 &gfs2_databuf_lops,
771 &gfs2_buf_lops,
772 &gfs2_rg_lops,
773 &gfs2_revoke_lops,
774 NULL,
775};
776
777
