blob: de97632ba32fbcb9fa7023e0ddd19f7bf9907f12 [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);
Steven Whitehouse0ab7d132009-11-06 16:20:51 +0000135 struct gfs2_meta_header *mh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000136 struct gfs2_trans *tr;
137
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100138 lock_buffer(bd->bd_bh);
Steven Whitehouse8bd95722007-01-25 10:04:20 +0000139 gfs2_log_lock(sdp);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100140 if (!list_empty(&bd->bd_list_tr))
141 goto out;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500142 tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000143 tr->tr_touched = 1;
144 tr->tr_num_buf++;
145 list_add(&bd->bd_list_tr, &tr->tr_list_buf);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000146 if (!list_empty(&le->le_list))
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100147 goto out;
Steven Whitehouse2bcd6102007-11-08 14:25:12 +0000148 set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
149 set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000150 gfs2_meta_check(sdp, bd->bd_bh);
Steven Whitehousea98ab222006-01-18 13:38:44 +0000151 gfs2_pin(sdp, bd->bd_bh);
Steven Whitehouse0ab7d132009-11-06 16:20:51 +0000152 mh = (struct gfs2_meta_header *)bd->bd_bh->b_data;
153 mh->__pad0 = cpu_to_be64(0);
154 mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000155 sdp->sd_log_num_buf++;
156 list_add(&le->le_list, &sdp->sd_log_le_buf);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000157 tr->tr_num_buf_new++;
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100158out:
159 gfs2_log_unlock(sdp);
160 unlock_buffer(bd->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000161}
162
David Teiglandb3b94fa2006-01-16 16:50:04 +0000163static void buf_lo_before_commit(struct gfs2_sbd *sdp)
164{
165 struct buffer_head *bh;
166 struct gfs2_log_descriptor *ld;
167 struct gfs2_bufdata *bd1 = NULL, *bd2;
Bob Peterson905d2ae2007-07-24 14:05:31 -0500168 unsigned int total;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000169 unsigned int limit;
170 unsigned int num;
171 unsigned n;
172 __be64 *ptr;
173
Robert Peterson2332c442007-06-18 14:50:20 -0500174 limit = buf_limit(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000175 /* for 4k blocks, limit = 503 */
176
Bob Peterson905d2ae2007-07-24 14:05:31 -0500177 gfs2_log_lock(sdp);
178 total = sdp->sd_log_num_buf;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000179 bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list);
180 while(total) {
181 num = total;
182 if (total > limit)
183 num = limit;
Bob Peterson905d2ae2007-07-24 14:05:31 -0500184 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100185 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500186 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100187 ld = bh_log_desc(bh);
188 ptr = bh_log_ptr(bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000189 ld->ld_length = cpu_to_be32(num + 1);
190 ld->ld_data1 = cpu_to_be32(num);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000191
192 n = 0;
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500193 list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf,
194 bd_le.le_list) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000195 *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr);
196 if (++n >= num)
197 break;
198 }
199
Bob Peterson905d2ae2007-07-24 14:05:31 -0500200 gfs2_log_unlock(sdp);
Steven Whitehousec969f582009-04-07 14:13:01 +0100201 submit_bh(WRITE_SYNC_PLUG, bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500202 gfs2_log_lock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000203
204 n = 0;
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500205 list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf,
206 bd_le.le_list) {
Steven Whitehouse16615be2007-09-17 10:59:52 +0100207 get_bh(bd2->bd_bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500208 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100209 lock_buffer(bd2->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000210 bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
Steven Whitehousec969f582009-04-07 14:13:01 +0100211 submit_bh(WRITE_SYNC_PLUG, bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500212 gfs2_log_lock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000213 if (++n >= num)
214 break;
215 }
216
Bob Peterson905d2ae2007-07-24 14:05:31 -0500217 BUG_ON(total < num);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000218 total -= num;
219 }
Bob Peterson905d2ae2007-07-24 14:05:31 -0500220 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000221}
222
223static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
224{
225 struct list_head *head = &sdp->sd_log_le_buf;
226 struct gfs2_bufdata *bd;
227
228 while (!list_empty(head)) {
229 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
230 list_del_init(&bd->bd_le.le_list);
231 sdp->sd_log_num_buf--;
232
Steven Whitehousea98ab222006-01-18 13:38:44 +0000233 gfs2_unpin(sdp, bd->bd_bh, ai);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000234 }
235 gfs2_assert_warn(sdp, !sdp->sd_log_num_buf);
236}
237
238static void buf_lo_before_scan(struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -0400239 struct gfs2_log_header_host *head, int pass)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000240{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400241 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000242
243 if (pass != 0)
244 return;
245
246 sdp->sd_found_blocks = 0;
247 sdp->sd_replayed_blocks = 0;
248}
249
250static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
251 struct gfs2_log_descriptor *ld, __be64 *ptr,
252 int pass)
253{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400254 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
255 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500256 struct gfs2_glock *gl = ip->i_gl;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000257 unsigned int blks = be32_to_cpu(ld->ld_data1);
258 struct buffer_head *bh_log, *bh_ip;
Steven Whitehousecd915492006-09-04 12:49:07 -0400259 u64 blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000260 int error = 0;
261
262 if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA)
263 return 0;
264
265 gfs2_replay_incr_blk(sdp, &start);
266
267 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
268 blkno = be64_to_cpu(*ptr++);
269
270 sdp->sd_found_blocks++;
271
272 if (gfs2_revoke_check(sdp, blkno, start))
273 continue;
274
275 error = gfs2_replay_read_block(jd, start, &bh_log);
Steven Whitehouse82ffa512006-09-04 14:47:06 -0400276 if (error)
277 return error;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000278
279 bh_ip = gfs2_meta_new(gl, blkno);
280 memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
281
282 if (gfs2_meta_check(sdp, bh_ip))
283 error = -EIO;
284 else
285 mark_buffer_dirty(bh_ip);
286
287 brelse(bh_log);
288 brelse(bh_ip);
289
290 if (error)
291 break;
292
293 sdp->sd_replayed_blocks++;
294 }
295
296 return error;
297}
298
299static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
300{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400301 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
302 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000303
304 if (error) {
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400305 gfs2_meta_sync(ip->i_gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000306 return;
307 }
308 if (pass != 1)
309 return;
310
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400311 gfs2_meta_sync(ip->i_gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000312
313 fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n",
314 jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
315}
316
317static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
318{
319 struct gfs2_trans *tr;
320
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500321 tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000322 tr->tr_touched = 1;
323 tr->tr_num_revoke++;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000324 sdp->sd_log_num_revoke++;
325 list_add(&le->le_list, &sdp->sd_log_le_revoke);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000326}
327
328static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
329{
330 struct gfs2_log_descriptor *ld;
331 struct gfs2_meta_header *mh;
332 struct buffer_head *bh;
333 unsigned int offset;
334 struct list_head *head = &sdp->sd_log_le_revoke;
Steven Whitehouse82e86082007-09-02 15:39:43 +0100335 struct gfs2_bufdata *bd;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000336
337 if (!sdp->sd_log_num_revoke)
338 return;
339
Steven Whitehouse16615be2007-09-17 10:59:52 +0100340 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE);
341 ld = bh_log_desc(bh);
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500342 ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke,
Steven Whitehousecd915492006-09-04 12:49:07 -0400343 sizeof(u64)));
David Teiglandb3b94fa2006-01-16 16:50:04 +0000344 ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000345 offset = sizeof(struct gfs2_log_descriptor);
346
347 while (!list_empty(head)) {
Steven Whitehouse82e86082007-09-02 15:39:43 +0100348 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
349 list_del_init(&bd->bd_le.le_list);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000350 sdp->sd_log_num_revoke--;
351
Steven Whitehousecd915492006-09-04 12:49:07 -0400352 if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) {
Steven Whitehousec969f582009-04-07 14:13:01 +0100353 submit_bh(WRITE_SYNC_PLUG, bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000354
355 bh = gfs2_log_get_buf(sdp);
356 mh = (struct gfs2_meta_header *)bh->b_data;
357 mh->mh_magic = cpu_to_be32(GFS2_MAGIC);
Steven Whitehousee3167de2006-03-30 15:46:23 -0500358 mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB);
359 mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000360 offset = sizeof(struct gfs2_meta_header);
361 }
362
Steven Whitehouse82e86082007-09-02 15:39:43 +0100363 *(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno);
Steven Whitehouse0820ab52007-09-02 16:47:38 +0100364 kmem_cache_free(gfs2_bufdata_cachep, bd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000365
Steven Whitehousecd915492006-09-04 12:49:07 -0400366 offset += sizeof(u64);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000367 }
368 gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
369
Steven Whitehousec969f582009-04-07 14:13:01 +0100370 submit_bh(WRITE_SYNC_PLUG, bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000371}
372
373static void revoke_lo_before_scan(struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -0400374 struct gfs2_log_header_host *head, int pass)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000375{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400376 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000377
378 if (pass != 0)
379 return;
380
381 sdp->sd_found_revokes = 0;
382 sdp->sd_replay_tail = head->lh_tail;
383}
384
385static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
386 struct gfs2_log_descriptor *ld, __be64 *ptr,
387 int pass)
388{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400389 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000390 unsigned int blks = be32_to_cpu(ld->ld_length);
391 unsigned int revokes = be32_to_cpu(ld->ld_data1);
392 struct buffer_head *bh;
393 unsigned int offset;
Steven Whitehousecd915492006-09-04 12:49:07 -0400394 u64 blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000395 int first = 1;
396 int error;
397
398 if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE)
399 return 0;
400
401 offset = sizeof(struct gfs2_log_descriptor);
402
403 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
404 error = gfs2_replay_read_block(jd, start, &bh);
405 if (error)
406 return error;
407
408 if (!first)
409 gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB);
410
Steven Whitehousecd915492006-09-04 12:49:07 -0400411 while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000412 blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset));
413
414 error = gfs2_revoke_add(sdp, blkno, start);
Bob Peterson3ad62e82008-01-28 16:35:13 -0600415 if (error < 0) {
416 brelse(bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000417 return error;
Bob Peterson3ad62e82008-01-28 16:35:13 -0600418 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000419 else if (error)
420 sdp->sd_found_revokes++;
421
422 if (!--revokes)
423 break;
Steven Whitehousecd915492006-09-04 12:49:07 -0400424 offset += sizeof(u64);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000425 }
426
427 brelse(bh);
428 offset = sizeof(struct gfs2_meta_header);
429 first = 0;
430 }
431
432 return 0;
433}
434
435static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
436{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400437 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000438
439 if (error) {
440 gfs2_revoke_clean(sdp);
441 return;
442 }
443 if (pass != 1)
444 return;
445
446 fs_info(sdp, "jid=%u: Found %u revoke tags\n",
447 jd->jd_jid, sdp->sd_found_revokes);
448
449 gfs2_revoke_clean(sdp);
450}
451
452static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
453{
454 struct gfs2_rgrpd *rgd;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500455 struct gfs2_trans *tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000456
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500457 tr->tr_touched = 1;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000458
David Teiglandb3b94fa2006-01-16 16:50:04 +0000459 rgd = container_of(le, struct gfs2_rgrpd, rd_le);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000460
461 gfs2_log_lock(sdp);
Benjamin Marzinski68835622007-03-23 09:05:12 +0000462 if (!list_empty(&le->le_list)){
463 gfs2_log_unlock(sdp);
464 return;
465 }
466 gfs2_rgrp_bh_hold(rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000467 sdp->sd_log_num_rg++;
468 list_add(&le->le_list, &sdp->sd_log_le_rg);
Steven Whitehouse907b9bc2006-09-25 09:26:04 -0400469 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000470}
471
472static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
473{
474 struct list_head *head = &sdp->sd_log_le_rg;
475 struct gfs2_rgrpd *rgd;
476
477 while (!list_empty(head)) {
478 rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list);
479 list_del_init(&rgd->rd_le.le_list);
480 sdp->sd_log_num_rg--;
481
482 gfs2_rgrp_repolish_clones(rgd);
483 gfs2_rgrp_bh_put(rgd);
484 }
485 gfs2_assert_warn(sdp, !sdp->sd_log_num_rg);
486}
487
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000488/**
489 * databuf_lo_add - Add a databuf to the transaction.
490 *
491 * This is used in two distinct cases:
492 * i) In ordered write mode
493 * We put the data buffer on a list so that we can ensure that its
494 * synced to disk at the right time
495 * ii) In journaled data mode
496 * We need to journal the data block in the same way as metadata in
497 * the functions above. The difference is that here we have a tag
498 * which is two __be64's being the block number (as per meta data)
499 * and a flag which says whether the data block needs escaping or
500 * not. This means we need a new log entry for each 251 or so data
501 * blocks, which isn't an enormous overhead but twice as much as
502 * for normal metadata blocks.
503 */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000504static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
505{
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000506 struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500507 struct gfs2_trans *tr = current->journal_info;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000508 struct address_space *mapping = bd->bd_bh->b_page->mapping;
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400509 struct gfs2_inode *ip = GFS2_I(mapping->host);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000510
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100511 lock_buffer(bd->bd_bh);
Steven Whitehouse8bd95722007-01-25 10:04:20 +0000512 gfs2_log_lock(sdp);
Steven Whitehouse9ff8ec32007-09-28 13:49:05 +0100513 if (tr) {
514 if (!list_empty(&bd->bd_list_tr))
515 goto out;
516 tr->tr_touched = 1;
517 if (gfs2_is_jdata(ip)) {
518 tr->tr_num_buf++;
519 list_add(&bd->bd_list_tr, &tr->tr_list_buf);
520 }
Robert Peterson773ed1a2007-06-20 08:34:06 -0500521 }
Robert Peterson2332c442007-06-18 14:50:20 -0500522 if (!list_empty(&le->le_list))
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100523 goto out;
Robert Peterson2332c442007-06-18 14:50:20 -0500524
Steven Whitehouse2bcd6102007-11-08 14:25:12 +0000525 set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
526 set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
Robert Peterson2332c442007-06-18 14:50:20 -0500527 if (gfs2_is_jdata(ip)) {
Robert Peterson2332c442007-06-18 14:50:20 -0500528 gfs2_pin(sdp, bd->bd_bh);
529 tr->tr_num_databuf_new++;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100530 sdp->sd_log_num_databuf++;
531 list_add(&le->le_list, &sdp->sd_log_le_databuf);
532 } else {
533 list_add(&le->le_list, &sdp->sd_log_le_ordered);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100534 }
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100535out:
David Teiglandb3b94fa2006-01-16 16:50:04 +0000536 gfs2_log_unlock(sdp);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100537 unlock_buffer(bd->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000538}
539
Steven Whitehouse16615be2007-09-17 10:59:52 +0100540static void gfs2_check_magic(struct buffer_head *bh)
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000541{
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000542 void *kaddr;
543 __be32 *ptr;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000544
Steven Whitehouse16615be2007-09-17 10:59:52 +0100545 clear_buffer_escaped(bh);
546 kaddr = kmap_atomic(bh->b_page, KM_USER0);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000547 ptr = kaddr + bh_offset(bh);
548 if (*ptr == cpu_to_be32(GFS2_MAGIC))
Steven Whitehouse16615be2007-09-17 10:59:52 +0100549 set_buffer_escaped(bh);
Russell Cattelanc312c4f2006-10-12 09:23:41 -0400550 kunmap_atomic(kaddr, KM_USER0);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100551}
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000552
Steven Whitehouse16615be2007-09-17 10:59:52 +0100553static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh,
554 struct list_head *list, struct list_head *done,
555 unsigned int n)
556{
557 struct buffer_head *bh1;
558 struct gfs2_log_descriptor *ld;
559 struct gfs2_bufdata *bd;
560 __be64 *ptr;
561
562 if (!bh)
563 return;
564
565 ld = bh_log_desc(bh);
566 ld->ld_length = cpu_to_be32(n + 1);
567 ld->ld_data1 = cpu_to_be32(n);
568
569 ptr = bh_log_ptr(bh);
570
571 get_bh(bh);
Steven Whitehousec969f582009-04-07 14:13:01 +0100572 submit_bh(WRITE_SYNC_PLUG, bh);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100573 gfs2_log_lock(sdp);
574 while(!list_empty(list)) {
575 bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list);
576 list_move_tail(&bd->bd_le.le_list, done);
577 get_bh(bd->bd_bh);
578 while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) {
579 gfs2_log_incr_head(sdp);
580 ptr += 2;
581 }
582 gfs2_log_unlock(sdp);
583 lock_buffer(bd->bd_bh);
584 if (buffer_escaped(bd->bd_bh)) {
585 void *kaddr;
586 bh1 = gfs2_log_get_buf(sdp);
587 kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0);
588 memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh),
589 bh1->b_size);
590 kunmap_atomic(kaddr, KM_USER0);
591 *(__be32 *)bh1->b_data = 0;
592 clear_buffer_escaped(bd->bd_bh);
593 unlock_buffer(bd->bd_bh);
594 brelse(bd->bd_bh);
595 } else {
596 bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh);
597 }
Steven Whitehousec969f582009-04-07 14:13:01 +0100598 submit_bh(WRITE_SYNC_PLUG, bh1);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100599 gfs2_log_lock(sdp);
600 ptr += 2;
601 }
602 gfs2_log_unlock(sdp);
603 brelse(bh);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000604}
605
606/**
607 * databuf_lo_before_commit - Scan the data buffers, writing as we go
608 *
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000609 */
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100610
David Teiglandb3b94fa2006-01-16 16:50:04 +0000611static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
612{
Steven Whitehouse16615be2007-09-17 10:59:52 +0100613 struct gfs2_bufdata *bd = NULL;
614 struct buffer_head *bh = NULL;
615 unsigned int n = 0;
616 __be64 *ptr = NULL, *end = NULL;
617 LIST_HEAD(processed);
618 LIST_HEAD(in_progress);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000619
Steven Whitehousef55ab262006-02-21 12:51:39 +0000620 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100621 while (!list_empty(&sdp->sd_log_le_databuf)) {
622 if (ptr == end) {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000623 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100624 gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
625 n = 0;
626 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA);
627 ptr = bh_log_ptr(bh);
628 end = bh_ptr_end(bh) - 1;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000629 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100630 continue;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000631 }
Steven Whitehouse16615be2007-09-17 10:59:52 +0100632 bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list);
633 list_move_tail(&bd->bd_le.le_list, &in_progress);
634 gfs2_check_magic(bd->bd_bh);
635 *ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr);
636 *ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0);
637 n++;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000638 }
Steven Whitehousef55ab262006-02-21 12:51:39 +0000639 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100640 gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
641 gfs2_log_lock(sdp);
642 list_splice(&processed, &sdp->sd_log_le_databuf);
643 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000644}
645
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000646static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
647 struct gfs2_log_descriptor *ld,
648 __be64 *ptr, int pass)
649{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400650 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
651 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500652 struct gfs2_glock *gl = ip->i_gl;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000653 unsigned int blks = be32_to_cpu(ld->ld_data1);
654 struct buffer_head *bh_log, *bh_ip;
Steven Whitehousecd915492006-09-04 12:49:07 -0400655 u64 blkno;
656 u64 esc;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000657 int error = 0;
658
659 if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA)
660 return 0;
661
662 gfs2_replay_incr_blk(sdp, &start);
663 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
664 blkno = be64_to_cpu(*ptr++);
665 esc = be64_to_cpu(*ptr++);
666
667 sdp->sd_found_blocks++;
668
669 if (gfs2_revoke_check(sdp, blkno, start))
670 continue;
671
672 error = gfs2_replay_read_block(jd, start, &bh_log);
673 if (error)
674 return error;
675
676 bh_ip = gfs2_meta_new(gl, blkno);
677 memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
678
679 /* Unescape */
680 if (esc) {
681 __be32 *eptr = (__be32 *)bh_ip->b_data;
682 *eptr = cpu_to_be32(GFS2_MAGIC);
683 }
684 mark_buffer_dirty(bh_ip);
685
686 brelse(bh_log);
687 brelse(bh_ip);
688 if (error)
689 break;
690
691 sdp->sd_replayed_blocks++;
692 }
693
694 return error;
695}
696
697/* FIXME: sort out accounting for log blocks etc. */
698
699static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
700{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400701 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
702 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000703
704 if (error) {
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400705 gfs2_meta_sync(ip->i_gl);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000706 return;
707 }
708 if (pass != 1)
709 return;
710
711 /* data sync? */
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400712 gfs2_meta_sync(ip->i_gl);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000713
714 fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n",
715 jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
716}
717
718static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
719{
720 struct list_head *head = &sdp->sd_log_le_databuf;
721 struct gfs2_bufdata *bd;
722
723 while (!list_empty(head)) {
724 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
Steven Whitehouseb8e1aab2006-08-22 16:25:50 -0400725 list_del_init(&bd->bd_le.le_list);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000726 sdp->sd_log_num_databuf--;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000727 gfs2_unpin(sdp, bd->bd_bh, ai);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000728 }
729 gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000730}
731
732
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400733const struct gfs2_log_operations gfs2_buf_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000734 .lo_add = buf_lo_add,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000735 .lo_before_commit = buf_lo_before_commit,
736 .lo_after_commit = buf_lo_after_commit,
737 .lo_before_scan = buf_lo_before_scan,
738 .lo_scan_elements = buf_lo_scan_elements,
739 .lo_after_scan = buf_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400740 .lo_name = "buf",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000741};
742
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400743const struct gfs2_log_operations gfs2_revoke_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000744 .lo_add = revoke_lo_add,
745 .lo_before_commit = revoke_lo_before_commit,
746 .lo_before_scan = revoke_lo_before_scan,
747 .lo_scan_elements = revoke_lo_scan_elements,
748 .lo_after_scan = revoke_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400749 .lo_name = "revoke",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000750};
751
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400752const struct gfs2_log_operations gfs2_rg_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000753 .lo_add = rg_lo_add,
754 .lo_after_commit = rg_lo_after_commit,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400755 .lo_name = "rg",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000756};
757
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400758const struct gfs2_log_operations gfs2_databuf_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000759 .lo_add = databuf_lo_add,
760 .lo_before_commit = databuf_lo_before_commit,
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000761 .lo_after_commit = databuf_lo_after_commit,
762 .lo_scan_elements = databuf_lo_scan_elements,
763 .lo_after_scan = databuf_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400764 .lo_name = "databuf",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000765};
766
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400767const struct gfs2_log_operations *gfs2_log_ops[] = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000768 &gfs2_databuf_lops,
Steven Whitehouse16615be2007-09-17 10:59:52 +0100769 &gfs2_buf_lops,
770 &gfs2_rg_lops,
771 &gfs2_revoke_lops,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400772 NULL,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000773};
774