blob: 9969ff062c5b82b9d518b1b841c0aac602f01280 [file] [log] [blame]
David Teiglandb3b94fa2006-01-16 16:50:04 +00001/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
Steven Whitehouse3a8a9a12006-05-18 15:09:15 -04003 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
David Teiglandb3b94fa2006-01-16 16:50:04 +00004 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
Steven Whitehousee9fc2aa2006-09-01 11:05:15 -04007 * of the GNU General Public License version 2.
David Teiglandb3b94fa2006-01-16 16:50:04 +00008 */
9
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>
Steven Whitehouse5c676f62006-02-27 17:23:27 -050015#include <linux/gfs2_ondisk.h>
Steven Whitehousec969f582009-04-07 14:13:01 +010016#include <linux/bio.h>
17#include <linux/fs.h>
David Teiglandb3b94fa2006-01-16 16:50:04 +000018
19#include "gfs2.h"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050020#include "incore.h"
Robert Peterson2332c442007-06-18 14:50:20 -050021#include "inode.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000022#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"
Steven Whitehouse5c676f62006-02-27 17:23:27 -050029#include "util.h"
Steven Whitehouse63997772009-06-12 08:49:20 +010030#include "trace_gfs2.h"
David Teiglandb3b94fa2006-01-16 16:50:04 +000031
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010032/**
33 * gfs2_pin - Pin a buffer in memory
34 * @sdp: The superblock
35 * @bh: The buffer to be pinned
36 *
37 * The log lock must be held when calling this function
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 /* If this buffer is in the AIL and it has already been written
52 * to in-place disk block, remove it from the AIL.
53 */
54 if (bd->bd_ail)
55 list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list);
56 get_bh(bh);
Steven Whitehouse63997772009-06-12 08:49:20 +010057 trace_gfs2_pin(bd, 1);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010058}
59
60/**
61 * gfs2_unpin - Unpin a buffer
62 * @sdp: the filesystem the buffer belongs to
63 * @bh: The buffer to unpin
64 * @ai:
65 *
66 */
67
68static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh,
69 struct gfs2_ail *ai)
70{
71 struct gfs2_bufdata *bd = bh->b_private;
72
73 gfs2_assert_withdraw(sdp, buffer_uptodate(bh));
74
75 if (!buffer_pinned(bh))
76 gfs2_assert_withdraw(sdp, 0);
77
78 lock_buffer(bh);
79 mark_buffer_dirty(bh);
80 clear_buffer_pinned(bh);
81
82 gfs2_log_lock(sdp);
83 if (bd->bd_ail) {
84 list_del(&bd->bd_ail_st_list);
85 brelse(bh);
86 } else {
87 struct gfs2_glock *gl = bd->bd_gl;
88 list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list);
89 atomic_inc(&gl->gl_ail_count);
90 }
91 bd->bd_ail = ai;
92 list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list);
Steven Whitehouse2bcd6102007-11-08 14:25:12 +000093 clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
Steven Whitehouse63997772009-06-12 08:49:20 +010094 trace_gfs2_pin(bd, 0);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010095 gfs2_log_unlock(sdp);
96 unlock_buffer(bh);
97}
98
Steven Whitehouse16615be2007-09-17 10:59:52 +010099
100static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh)
101{
102 return (struct gfs2_log_descriptor *)bh->b_data;
103}
104
105static inline __be64 *bh_log_ptr(struct buffer_head *bh)
106{
107 struct gfs2_log_descriptor *ld = bh_log_desc(bh);
108 return (__force __be64 *)(ld + 1);
109}
110
111static inline __be64 *bh_ptr_end(struct buffer_head *bh)
112{
113 return (__force __be64 *)(bh->b_data + bh->b_size);
114}
115
116
117static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type)
118{
119 struct buffer_head *bh = gfs2_log_get_buf(sdp);
120 struct gfs2_log_descriptor *ld = bh_log_desc(bh);
121 ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
122 ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD);
123 ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD);
124 ld->ld_type = cpu_to_be32(ld_type);
125 ld->ld_length = 0;
126 ld->ld_data1 = 0;
127 ld->ld_data2 = 0;
128 memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
129 return bh;
130}
131
David Teiglandb3b94fa2006-01-16 16:50:04 +0000132static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
133{
134 struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
135 struct gfs2_trans *tr;
136
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100137 lock_buffer(bd->bd_bh);
Steven Whitehouse8bd95722007-01-25 10:04:20 +0000138 gfs2_log_lock(sdp);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100139 if (!list_empty(&bd->bd_list_tr))
140 goto out;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500141 tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000142 tr->tr_touched = 1;
143 tr->tr_num_buf++;
144 list_add(&bd->bd_list_tr, &tr->tr_list_buf);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000145 if (!list_empty(&le->le_list))
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100146 goto out;
Steven Whitehouse2bcd6102007-11-08 14:25:12 +0000147 set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
148 set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000149 gfs2_meta_check(sdp, bd->bd_bh);
Steven Whitehousea98ab222006-01-18 13:38:44 +0000150 gfs2_pin(sdp, bd->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000151 sdp->sd_log_num_buf++;
152 list_add(&le->le_list, &sdp->sd_log_le_buf);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000153 tr->tr_num_buf_new++;
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100154out:
155 gfs2_log_unlock(sdp);
156 unlock_buffer(bd->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000157}
158
David Teiglandb3b94fa2006-01-16 16:50:04 +0000159static void buf_lo_before_commit(struct gfs2_sbd *sdp)
160{
161 struct buffer_head *bh;
162 struct gfs2_log_descriptor *ld;
163 struct gfs2_bufdata *bd1 = NULL, *bd2;
Bob Peterson905d2ae2007-07-24 14:05:31 -0500164 unsigned int total;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000165 unsigned int limit;
166 unsigned int num;
167 unsigned n;
168 __be64 *ptr;
169
Robert Peterson2332c442007-06-18 14:50:20 -0500170 limit = buf_limit(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000171 /* for 4k blocks, limit = 503 */
172
Bob Peterson905d2ae2007-07-24 14:05:31 -0500173 gfs2_log_lock(sdp);
174 total = sdp->sd_log_num_buf;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000175 bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list);
176 while(total) {
177 num = total;
178 if (total > limit)
179 num = limit;
Bob Peterson905d2ae2007-07-24 14:05:31 -0500180 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100181 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500182 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100183 ld = bh_log_desc(bh);
184 ptr = bh_log_ptr(bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000185 ld->ld_length = cpu_to_be32(num + 1);
186 ld->ld_data1 = cpu_to_be32(num);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000187
188 n = 0;
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500189 list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf,
190 bd_le.le_list) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000191 *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr);
192 if (++n >= num)
193 break;
194 }
195
Bob Peterson905d2ae2007-07-24 14:05:31 -0500196 gfs2_log_unlock(sdp);
Steven Whitehousec969f582009-04-07 14:13:01 +0100197 submit_bh(WRITE_SYNC_PLUG, bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500198 gfs2_log_lock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000199
200 n = 0;
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500201 list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf,
202 bd_le.le_list) {
Steven Whitehouse16615be2007-09-17 10:59:52 +0100203 get_bh(bd2->bd_bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500204 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100205 lock_buffer(bd2->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000206 bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
Steven Whitehousec969f582009-04-07 14:13:01 +0100207 submit_bh(WRITE_SYNC_PLUG, bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500208 gfs2_log_lock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000209 if (++n >= num)
210 break;
211 }
212
Bob Peterson905d2ae2007-07-24 14:05:31 -0500213 BUG_ON(total < num);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000214 total -= num;
215 }
Bob Peterson905d2ae2007-07-24 14:05:31 -0500216 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000217}
218
219static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
220{
221 struct list_head *head = &sdp->sd_log_le_buf;
222 struct gfs2_bufdata *bd;
223
224 while (!list_empty(head)) {
225 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
226 list_del_init(&bd->bd_le.le_list);
227 sdp->sd_log_num_buf--;
228
Steven Whitehousea98ab222006-01-18 13:38:44 +0000229 gfs2_unpin(sdp, bd->bd_bh, ai);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000230 }
231 gfs2_assert_warn(sdp, !sdp->sd_log_num_buf);
232}
233
234static void buf_lo_before_scan(struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -0400235 struct gfs2_log_header_host *head, int pass)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000236{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400237 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000238
239 if (pass != 0)
240 return;
241
242 sdp->sd_found_blocks = 0;
243 sdp->sd_replayed_blocks = 0;
244}
245
246static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
247 struct gfs2_log_descriptor *ld, __be64 *ptr,
248 int pass)
249{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400250 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
251 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500252 struct gfs2_glock *gl = ip->i_gl;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000253 unsigned int blks = be32_to_cpu(ld->ld_data1);
254 struct buffer_head *bh_log, *bh_ip;
Steven Whitehousecd915492006-09-04 12:49:07 -0400255 u64 blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000256 int error = 0;
257
258 if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA)
259 return 0;
260
261 gfs2_replay_incr_blk(sdp, &start);
262
263 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
264 blkno = be64_to_cpu(*ptr++);
265
266 sdp->sd_found_blocks++;
267
268 if (gfs2_revoke_check(sdp, blkno, start))
269 continue;
270
271 error = gfs2_replay_read_block(jd, start, &bh_log);
Steven Whitehouse82ffa512006-09-04 14:47:06 -0400272 if (error)
273 return error;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000274
275 bh_ip = gfs2_meta_new(gl, blkno);
276 memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
277
278 if (gfs2_meta_check(sdp, bh_ip))
279 error = -EIO;
280 else
281 mark_buffer_dirty(bh_ip);
282
283 brelse(bh_log);
284 brelse(bh_ip);
285
286 if (error)
287 break;
288
289 sdp->sd_replayed_blocks++;
290 }
291
292 return error;
293}
294
295static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
296{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400297 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
298 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000299
300 if (error) {
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400301 gfs2_meta_sync(ip->i_gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000302 return;
303 }
304 if (pass != 1)
305 return;
306
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400307 gfs2_meta_sync(ip->i_gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000308
309 fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n",
310 jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
311}
312
313static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
314{
315 struct gfs2_trans *tr;
316
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500317 tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000318 tr->tr_touched = 1;
319 tr->tr_num_revoke++;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000320 sdp->sd_log_num_revoke++;
321 list_add(&le->le_list, &sdp->sd_log_le_revoke);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000322}
323
324static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
325{
326 struct gfs2_log_descriptor *ld;
327 struct gfs2_meta_header *mh;
328 struct buffer_head *bh;
329 unsigned int offset;
330 struct list_head *head = &sdp->sd_log_le_revoke;
Steven Whitehouse82e86082007-09-02 15:39:43 +0100331 struct gfs2_bufdata *bd;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000332
333 if (!sdp->sd_log_num_revoke)
334 return;
335
Steven Whitehouse16615be2007-09-17 10:59:52 +0100336 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE);
337 ld = bh_log_desc(bh);
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500338 ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke,
Steven Whitehousecd915492006-09-04 12:49:07 -0400339 sizeof(u64)));
David Teiglandb3b94fa2006-01-16 16:50:04 +0000340 ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000341 offset = sizeof(struct gfs2_log_descriptor);
342
343 while (!list_empty(head)) {
Steven Whitehouse82e86082007-09-02 15:39:43 +0100344 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
345 list_del_init(&bd->bd_le.le_list);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000346 sdp->sd_log_num_revoke--;
347
Steven Whitehousecd915492006-09-04 12:49:07 -0400348 if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) {
Steven Whitehousec969f582009-04-07 14:13:01 +0100349 submit_bh(WRITE_SYNC_PLUG, bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000350
351 bh = gfs2_log_get_buf(sdp);
352 mh = (struct gfs2_meta_header *)bh->b_data;
353 mh->mh_magic = cpu_to_be32(GFS2_MAGIC);
Steven Whitehousee3167de2006-03-30 15:46:23 -0500354 mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB);
355 mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000356 offset = sizeof(struct gfs2_meta_header);
357 }
358
Steven Whitehouse82e86082007-09-02 15:39:43 +0100359 *(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno);
Steven Whitehouse0820ab52007-09-02 16:47:38 +0100360 kmem_cache_free(gfs2_bufdata_cachep, bd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000361
Steven Whitehousecd915492006-09-04 12:49:07 -0400362 offset += sizeof(u64);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000363 }
364 gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
365
Steven Whitehousec969f582009-04-07 14:13:01 +0100366 submit_bh(WRITE_SYNC_PLUG, bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000367}
368
369static void revoke_lo_before_scan(struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -0400370 struct gfs2_log_header_host *head, int pass)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000371{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400372 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000373
374 if (pass != 0)
375 return;
376
377 sdp->sd_found_revokes = 0;
378 sdp->sd_replay_tail = head->lh_tail;
379}
380
381static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
382 struct gfs2_log_descriptor *ld, __be64 *ptr,
383 int pass)
384{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400385 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000386 unsigned int blks = be32_to_cpu(ld->ld_length);
387 unsigned int revokes = be32_to_cpu(ld->ld_data1);
388 struct buffer_head *bh;
389 unsigned int offset;
Steven Whitehousecd915492006-09-04 12:49:07 -0400390 u64 blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000391 int first = 1;
392 int error;
393
394 if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE)
395 return 0;
396
397 offset = sizeof(struct gfs2_log_descriptor);
398
399 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
400 error = gfs2_replay_read_block(jd, start, &bh);
401 if (error)
402 return error;
403
404 if (!first)
405 gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB);
406
Steven Whitehousecd915492006-09-04 12:49:07 -0400407 while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000408 blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset));
409
410 error = gfs2_revoke_add(sdp, blkno, start);
Bob Peterson3ad62e82008-01-28 16:35:13 -0600411 if (error < 0) {
412 brelse(bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000413 return error;
Bob Peterson3ad62e82008-01-28 16:35:13 -0600414 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000415 else if (error)
416 sdp->sd_found_revokes++;
417
418 if (!--revokes)
419 break;
Steven Whitehousecd915492006-09-04 12:49:07 -0400420 offset += sizeof(u64);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000421 }
422
423 brelse(bh);
424 offset = sizeof(struct gfs2_meta_header);
425 first = 0;
426 }
427
428 return 0;
429}
430
431static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
432{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400433 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000434
435 if (error) {
436 gfs2_revoke_clean(sdp);
437 return;
438 }
439 if (pass != 1)
440 return;
441
442 fs_info(sdp, "jid=%u: Found %u revoke tags\n",
443 jd->jd_jid, sdp->sd_found_revokes);
444
445 gfs2_revoke_clean(sdp);
446}
447
448static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
449{
450 struct gfs2_rgrpd *rgd;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500451 struct gfs2_trans *tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000452
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500453 tr->tr_touched = 1;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000454
David Teiglandb3b94fa2006-01-16 16:50:04 +0000455 rgd = container_of(le, struct gfs2_rgrpd, rd_le);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000456
457 gfs2_log_lock(sdp);
Benjamin Marzinski68835622007-03-23 09:05:12 +0000458 if (!list_empty(&le->le_list)){
459 gfs2_log_unlock(sdp);
460 return;
461 }
462 gfs2_rgrp_bh_hold(rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000463 sdp->sd_log_num_rg++;
464 list_add(&le->le_list, &sdp->sd_log_le_rg);
Steven Whitehouse907b9bc2006-09-25 09:26:04 -0400465 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000466}
467
468static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
469{
470 struct list_head *head = &sdp->sd_log_le_rg;
471 struct gfs2_rgrpd *rgd;
472
473 while (!list_empty(head)) {
474 rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list);
475 list_del_init(&rgd->rd_le.le_list);
476 sdp->sd_log_num_rg--;
477
478 gfs2_rgrp_repolish_clones(rgd);
479 gfs2_rgrp_bh_put(rgd);
480 }
481 gfs2_assert_warn(sdp, !sdp->sd_log_num_rg);
482}
483
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000484/**
485 * databuf_lo_add - Add a databuf to the transaction.
486 *
487 * This is used in two distinct cases:
488 * i) In ordered write mode
489 * We put the data buffer on a list so that we can ensure that its
490 * synced to disk at the right time
491 * ii) In journaled data mode
492 * We need to journal the data block in the same way as metadata in
493 * the functions above. The difference is that here we have a tag
494 * which is two __be64's being the block number (as per meta data)
495 * and a flag which says whether the data block needs escaping or
496 * not. This means we need a new log entry for each 251 or so data
497 * blocks, which isn't an enormous overhead but twice as much as
498 * for normal metadata blocks.
499 */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000500static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
501{
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000502 struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500503 struct gfs2_trans *tr = current->journal_info;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000504 struct address_space *mapping = bd->bd_bh->b_page->mapping;
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400505 struct gfs2_inode *ip = GFS2_I(mapping->host);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000506
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100507 lock_buffer(bd->bd_bh);
Steven Whitehouse8bd95722007-01-25 10:04:20 +0000508 gfs2_log_lock(sdp);
Steven Whitehouse9ff8ec32007-09-28 13:49:05 +0100509 if (tr) {
510 if (!list_empty(&bd->bd_list_tr))
511 goto out;
512 tr->tr_touched = 1;
513 if (gfs2_is_jdata(ip)) {
514 tr->tr_num_buf++;
515 list_add(&bd->bd_list_tr, &tr->tr_list_buf);
516 }
Robert Peterson773ed1a2007-06-20 08:34:06 -0500517 }
Robert Peterson2332c442007-06-18 14:50:20 -0500518 if (!list_empty(&le->le_list))
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100519 goto out;
Robert Peterson2332c442007-06-18 14:50:20 -0500520
Steven Whitehouse2bcd6102007-11-08 14:25:12 +0000521 set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
522 set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
Robert Peterson2332c442007-06-18 14:50:20 -0500523 if (gfs2_is_jdata(ip)) {
Robert Peterson2332c442007-06-18 14:50:20 -0500524 gfs2_pin(sdp, bd->bd_bh);
525 tr->tr_num_databuf_new++;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100526 sdp->sd_log_num_databuf++;
527 list_add(&le->le_list, &sdp->sd_log_le_databuf);
528 } else {
529 list_add(&le->le_list, &sdp->sd_log_le_ordered);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100530 }
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100531out:
David Teiglandb3b94fa2006-01-16 16:50:04 +0000532 gfs2_log_unlock(sdp);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100533 unlock_buffer(bd->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000534}
535
Steven Whitehouse16615be2007-09-17 10:59:52 +0100536static void gfs2_check_magic(struct buffer_head *bh)
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000537{
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000538 void *kaddr;
539 __be32 *ptr;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000540
Steven Whitehouse16615be2007-09-17 10:59:52 +0100541 clear_buffer_escaped(bh);
542 kaddr = kmap_atomic(bh->b_page, KM_USER0);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000543 ptr = kaddr + bh_offset(bh);
544 if (*ptr == cpu_to_be32(GFS2_MAGIC))
Steven Whitehouse16615be2007-09-17 10:59:52 +0100545 set_buffer_escaped(bh);
Russell Cattelanc312c4f2006-10-12 09:23:41 -0400546 kunmap_atomic(kaddr, KM_USER0);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100547}
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000548
Steven Whitehouse16615be2007-09-17 10:59:52 +0100549static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh,
550 struct list_head *list, struct list_head *done,
551 unsigned int n)
552{
553 struct buffer_head *bh1;
554 struct gfs2_log_descriptor *ld;
555 struct gfs2_bufdata *bd;
556 __be64 *ptr;
557
558 if (!bh)
559 return;
560
561 ld = bh_log_desc(bh);
562 ld->ld_length = cpu_to_be32(n + 1);
563 ld->ld_data1 = cpu_to_be32(n);
564
565 ptr = bh_log_ptr(bh);
566
567 get_bh(bh);
Steven Whitehousec969f582009-04-07 14:13:01 +0100568 submit_bh(WRITE_SYNC_PLUG, bh);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100569 gfs2_log_lock(sdp);
570 while(!list_empty(list)) {
571 bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list);
572 list_move_tail(&bd->bd_le.le_list, done);
573 get_bh(bd->bd_bh);
574 while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) {
575 gfs2_log_incr_head(sdp);
576 ptr += 2;
577 }
578 gfs2_log_unlock(sdp);
579 lock_buffer(bd->bd_bh);
580 if (buffer_escaped(bd->bd_bh)) {
581 void *kaddr;
582 bh1 = gfs2_log_get_buf(sdp);
583 kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0);
584 memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh),
585 bh1->b_size);
586 kunmap_atomic(kaddr, KM_USER0);
587 *(__be32 *)bh1->b_data = 0;
588 clear_buffer_escaped(bd->bd_bh);
589 unlock_buffer(bd->bd_bh);
590 brelse(bd->bd_bh);
591 } else {
592 bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh);
593 }
Steven Whitehousec969f582009-04-07 14:13:01 +0100594 submit_bh(WRITE_SYNC_PLUG, bh1);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100595 gfs2_log_lock(sdp);
596 ptr += 2;
597 }
598 gfs2_log_unlock(sdp);
599 brelse(bh);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000600}
601
602/**
603 * databuf_lo_before_commit - Scan the data buffers, writing as we go
604 *
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000605 */
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100606
David Teiglandb3b94fa2006-01-16 16:50:04 +0000607static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
608{
Steven Whitehouse16615be2007-09-17 10:59:52 +0100609 struct gfs2_bufdata *bd = NULL;
610 struct buffer_head *bh = NULL;
611 unsigned int n = 0;
612 __be64 *ptr = NULL, *end = NULL;
613 LIST_HEAD(processed);
614 LIST_HEAD(in_progress);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000615
Steven Whitehousef55ab262006-02-21 12:51:39 +0000616 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100617 while (!list_empty(&sdp->sd_log_le_databuf)) {
618 if (ptr == end) {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000619 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100620 gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
621 n = 0;
622 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA);
623 ptr = bh_log_ptr(bh);
624 end = bh_ptr_end(bh) - 1;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000625 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100626 continue;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000627 }
Steven Whitehouse16615be2007-09-17 10:59:52 +0100628 bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list);
629 list_move_tail(&bd->bd_le.le_list, &in_progress);
630 gfs2_check_magic(bd->bd_bh);
631 *ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr);
632 *ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0);
633 n++;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000634 }
Steven Whitehousef55ab262006-02-21 12:51:39 +0000635 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100636 gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
637 gfs2_log_lock(sdp);
638 list_splice(&processed, &sdp->sd_log_le_databuf);
639 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000640}
641
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000642static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
643 struct gfs2_log_descriptor *ld,
644 __be64 *ptr, int pass)
645{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400646 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
647 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500648 struct gfs2_glock *gl = ip->i_gl;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000649 unsigned int blks = be32_to_cpu(ld->ld_data1);
650 struct buffer_head *bh_log, *bh_ip;
Steven Whitehousecd915492006-09-04 12:49:07 -0400651 u64 blkno;
652 u64 esc;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000653 int error = 0;
654
655 if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA)
656 return 0;
657
658 gfs2_replay_incr_blk(sdp, &start);
659 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
660 blkno = be64_to_cpu(*ptr++);
661 esc = be64_to_cpu(*ptr++);
662
663 sdp->sd_found_blocks++;
664
665 if (gfs2_revoke_check(sdp, blkno, start))
666 continue;
667
668 error = gfs2_replay_read_block(jd, start, &bh_log);
669 if (error)
670 return error;
671
672 bh_ip = gfs2_meta_new(gl, blkno);
673 memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
674
675 /* Unescape */
676 if (esc) {
677 __be32 *eptr = (__be32 *)bh_ip->b_data;
678 *eptr = cpu_to_be32(GFS2_MAGIC);
679 }
680 mark_buffer_dirty(bh_ip);
681
682 brelse(bh_log);
683 brelse(bh_ip);
684 if (error)
685 break;
686
687 sdp->sd_replayed_blocks++;
688 }
689
690 return error;
691}
692
693/* FIXME: sort out accounting for log blocks etc. */
694
695static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
696{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400697 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
698 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000699
700 if (error) {
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400701 gfs2_meta_sync(ip->i_gl);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000702 return;
703 }
704 if (pass != 1)
705 return;
706
707 /* data sync? */
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400708 gfs2_meta_sync(ip->i_gl);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000709
710 fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n",
711 jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
712}
713
714static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
715{
716 struct list_head *head = &sdp->sd_log_le_databuf;
717 struct gfs2_bufdata *bd;
718
719 while (!list_empty(head)) {
720 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
Steven Whitehouseb8e1aab2006-08-22 16:25:50 -0400721 list_del_init(&bd->bd_le.le_list);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000722 sdp->sd_log_num_databuf--;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000723 gfs2_unpin(sdp, bd->bd_bh, ai);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000724 }
725 gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000726}
727
728
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400729const struct gfs2_log_operations gfs2_buf_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000730 .lo_add = buf_lo_add,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000731 .lo_before_commit = buf_lo_before_commit,
732 .lo_after_commit = buf_lo_after_commit,
733 .lo_before_scan = buf_lo_before_scan,
734 .lo_scan_elements = buf_lo_scan_elements,
735 .lo_after_scan = buf_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400736 .lo_name = "buf",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000737};
738
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400739const struct gfs2_log_operations gfs2_revoke_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000740 .lo_add = revoke_lo_add,
741 .lo_before_commit = revoke_lo_before_commit,
742 .lo_before_scan = revoke_lo_before_scan,
743 .lo_scan_elements = revoke_lo_scan_elements,
744 .lo_after_scan = revoke_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400745 .lo_name = "revoke",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000746};
747
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400748const struct gfs2_log_operations gfs2_rg_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000749 .lo_add = rg_lo_add,
750 .lo_after_commit = rg_lo_after_commit,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400751 .lo_name = "rg",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000752};
753
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400754const struct gfs2_log_operations gfs2_databuf_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000755 .lo_add = databuf_lo_add,
756 .lo_before_commit = databuf_lo_before_commit,
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000757 .lo_after_commit = databuf_lo_after_commit,
758 .lo_scan_elements = databuf_lo_scan_elements,
759 .lo_after_scan = databuf_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400760 .lo_name = "databuf",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000761};
762
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400763const struct gfs2_log_operations *gfs2_log_ops[] = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000764 &gfs2_databuf_lops,
Steven Whitehouse16615be2007-09-17 10:59:52 +0100765 &gfs2_buf_lops,
766 &gfs2_rg_lops,
767 &gfs2_revoke_lops,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400768 NULL,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000769};
770