blob: 05bbb124699f708ac5a6cad8589402aac23b27dc [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 Whitehousec969f58c2009-04-07 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
Steven Whitehouse29687a22011-03-30 16:33:25 +010043 BUG_ON(!current->journal_info);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010044
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 */
Steven Whitehousec618e872011-03-14 12:40:29 +000054 spin_lock(&sdp->sd_ail_lock);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010055 if (bd->bd_ail)
56 list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list);
Steven Whitehousec618e872011-03-14 12:40:29 +000057 spin_unlock(&sdp->sd_ail_lock);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010058 get_bh(bh);
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -050059 atomic_inc(&sdp->sd_log_pinned);
Steven Whitehouse63997772009-06-12 08:49:20 +010060 trace_gfs2_pin(bd, 1);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010061}
62
63/**
64 * gfs2_unpin - Unpin a buffer
65 * @sdp: the filesystem the buffer belongs to
66 * @bh: The buffer to unpin
67 * @ai:
Steven Whitehouse29687a22011-03-30 16:33:25 +010068 * @flags: The inode dirty flags
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010069 *
70 */
71
72static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh,
73 struct gfs2_ail *ai)
74{
75 struct gfs2_bufdata *bd = bh->b_private;
76
Steven Whitehouse29687a22011-03-30 16:33:25 +010077 BUG_ON(!buffer_uptodate(bh));
78 BUG_ON(!buffer_pinned(bh));
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010079
80 lock_buffer(bh);
81 mark_buffer_dirty(bh);
82 clear_buffer_pinned(bh);
83
Dave Chinnerd6a079e2011-03-11 11:52:25 +000084 spin_lock(&sdp->sd_ail_lock);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010085 if (bd->bd_ail) {
86 list_del(&bd->bd_ail_st_list);
87 brelse(bh);
88 } else {
89 struct gfs2_glock *gl = bd->bd_gl;
90 list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list);
91 atomic_inc(&gl->gl_ail_count);
92 }
93 bd->bd_ail = ai;
94 list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list);
Dave Chinnerd6a079e2011-03-11 11:52:25 +000095 spin_unlock(&sdp->sd_ail_lock);
96
Steven Whitehouse29687a22011-03-30 16:33:25 +010097 clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
Steven Whitehouse63997772009-06-12 08:49:20 +010098 trace_gfs2_pin(bd, 0);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +010099 unlock_buffer(bh);
Benjamin Marzinski5e687ea2010-05-04 14:29:16 -0500100 atomic_dec(&sdp->sd_log_pinned);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100101}
102
Steven Whitehouse16615be2007-09-17 10:59:52 +0100103
104static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh)
105{
106 return (struct gfs2_log_descriptor *)bh->b_data;
107}
108
109static inline __be64 *bh_log_ptr(struct buffer_head *bh)
110{
111 struct gfs2_log_descriptor *ld = bh_log_desc(bh);
112 return (__force __be64 *)(ld + 1);
113}
114
115static inline __be64 *bh_ptr_end(struct buffer_head *bh)
116{
117 return (__force __be64 *)(bh->b_data + bh->b_size);
118}
119
120
121static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type)
122{
123 struct buffer_head *bh = gfs2_log_get_buf(sdp);
124 struct gfs2_log_descriptor *ld = bh_log_desc(bh);
125 ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC);
126 ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD);
127 ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD);
128 ld->ld_type = cpu_to_be32(ld_type);
129 ld->ld_length = 0;
130 ld->ld_data1 = 0;
131 ld->ld_data2 = 0;
132 memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved));
133 return bh;
134}
135
David Teiglandb3b94fa2006-01-16 16:50:04 +0000136static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
137{
138 struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
Steven Whitehouse0ab7d132009-11-06 16:20:51 +0000139 struct gfs2_meta_header *mh;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000140 struct gfs2_trans *tr;
141
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100142 lock_buffer(bd->bd_bh);
Steven Whitehouse8bd95722007-01-25 10:04:20 +0000143 gfs2_log_lock(sdp);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100144 if (!list_empty(&bd->bd_list_tr))
145 goto out;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500146 tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000147 tr->tr_touched = 1;
148 tr->tr_num_buf++;
149 list_add(&bd->bd_list_tr, &tr->tr_list_buf);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000150 if (!list_empty(&le->le_list))
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100151 goto out;
Steven Whitehouse2bcd6102007-11-08 14:25:12 +0000152 set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
153 set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000154 gfs2_meta_check(sdp, bd->bd_bh);
Steven Whitehousea98ab222006-01-18 13:38:44 +0000155 gfs2_pin(sdp, bd->bd_bh);
Steven Whitehouse0ab7d132009-11-06 16:20:51 +0000156 mh = (struct gfs2_meta_header *)bd->bd_bh->b_data;
157 mh->__pad0 = cpu_to_be64(0);
158 mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000159 sdp->sd_log_num_buf++;
160 list_add(&le->le_list, &sdp->sd_log_le_buf);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000161 tr->tr_num_buf_new++;
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100162out:
163 gfs2_log_unlock(sdp);
164 unlock_buffer(bd->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000165}
166
David Teiglandb3b94fa2006-01-16 16:50:04 +0000167static void buf_lo_before_commit(struct gfs2_sbd *sdp)
168{
169 struct buffer_head *bh;
170 struct gfs2_log_descriptor *ld;
171 struct gfs2_bufdata *bd1 = NULL, *bd2;
Bob Peterson905d2ae2007-07-24 14:05:31 -0500172 unsigned int total;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000173 unsigned int limit;
174 unsigned int num;
175 unsigned n;
176 __be64 *ptr;
177
Robert Peterson2332c442007-06-18 14:50:20 -0500178 limit = buf_limit(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000179 /* for 4k blocks, limit = 503 */
180
Bob Peterson905d2ae2007-07-24 14:05:31 -0500181 gfs2_log_lock(sdp);
182 total = sdp->sd_log_num_buf;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000183 bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list);
184 while(total) {
185 num = total;
186 if (total > limit)
187 num = limit;
Bob Peterson905d2ae2007-07-24 14:05:31 -0500188 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100189 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500190 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100191 ld = bh_log_desc(bh);
192 ptr = bh_log_ptr(bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000193 ld->ld_length = cpu_to_be32(num + 1);
194 ld->ld_data1 = cpu_to_be32(num);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000195
196 n = 0;
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500197 list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf,
198 bd_le.le_list) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000199 *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr);
200 if (++n >= num)
201 break;
202 }
203
Bob Peterson905d2ae2007-07-24 14:05:31 -0500204 gfs2_log_unlock(sdp);
Jens Axboe721a9602011-03-09 11:56:30 +0100205 submit_bh(WRITE_SYNC, bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500206 gfs2_log_lock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000207
208 n = 0;
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500209 list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf,
210 bd_le.le_list) {
Steven Whitehouse16615be2007-09-17 10:59:52 +0100211 get_bh(bd2->bd_bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500212 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100213 lock_buffer(bd2->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000214 bh = gfs2_log_fake_buf(sdp, bd2->bd_bh);
Jens Axboe721a9602011-03-09 11:56:30 +0100215 submit_bh(WRITE_SYNC, bh);
Bob Peterson905d2ae2007-07-24 14:05:31 -0500216 gfs2_log_lock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000217 if (++n >= num)
218 break;
219 }
220
Bob Peterson905d2ae2007-07-24 14:05:31 -0500221 BUG_ON(total < num);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000222 total -= num;
223 }
Bob Peterson905d2ae2007-07-24 14:05:31 -0500224 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000225}
226
227static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
228{
229 struct list_head *head = &sdp->sd_log_le_buf;
230 struct gfs2_bufdata *bd;
231
232 while (!list_empty(head)) {
233 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
234 list_del_init(&bd->bd_le.le_list);
235 sdp->sd_log_num_buf--;
236
Steven Whitehousea98ab222006-01-18 13:38:44 +0000237 gfs2_unpin(sdp, bd->bd_bh, ai);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000238 }
239 gfs2_assert_warn(sdp, !sdp->sd_log_num_buf);
240}
241
242static void buf_lo_before_scan(struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -0400243 struct gfs2_log_header_host *head, int pass)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000244{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400245 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000246
247 if (pass != 0)
248 return;
249
250 sdp->sd_found_blocks = 0;
251 sdp->sd_replayed_blocks = 0;
252}
253
254static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
255 struct gfs2_log_descriptor *ld, __be64 *ptr,
256 int pass)
257{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400258 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
259 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500260 struct gfs2_glock *gl = ip->i_gl;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000261 unsigned int blks = be32_to_cpu(ld->ld_data1);
262 struct buffer_head *bh_log, *bh_ip;
Steven Whitehousecd915492006-09-04 12:49:07 -0400263 u64 blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000264 int error = 0;
265
266 if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA)
267 return 0;
268
269 gfs2_replay_incr_blk(sdp, &start);
270
271 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
272 blkno = be64_to_cpu(*ptr++);
273
274 sdp->sd_found_blocks++;
275
276 if (gfs2_revoke_check(sdp, blkno, start))
277 continue;
278
279 error = gfs2_replay_read_block(jd, start, &bh_log);
Steven Whitehouse82ffa512006-09-04 14:47:06 -0400280 if (error)
281 return error;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000282
283 bh_ip = gfs2_meta_new(gl, blkno);
284 memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
285
286 if (gfs2_meta_check(sdp, bh_ip))
287 error = -EIO;
288 else
289 mark_buffer_dirty(bh_ip);
290
291 brelse(bh_log);
292 brelse(bh_ip);
293
294 if (error)
295 break;
296
297 sdp->sd_replayed_blocks++;
298 }
299
300 return error;
301}
302
303static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
304{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400305 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
306 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000307
308 if (error) {
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400309 gfs2_meta_sync(ip->i_gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000310 return;
311 }
312 if (pass != 1)
313 return;
314
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400315 gfs2_meta_sync(ip->i_gl);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000316
317 fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n",
318 jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
319}
320
321static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
322{
Steven Whitehousef42ab082011-04-14 16:50:31 +0100323 struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
324 struct gfs2_glock *gl = bd->bd_gl;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000325 struct gfs2_trans *tr;
326
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500327 tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000328 tr->tr_touched = 1;
329 tr->tr_num_revoke++;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000330 sdp->sd_log_num_revoke++;
Steven Whitehousef42ab082011-04-14 16:50:31 +0100331 atomic_inc(&gl->gl_revokes);
332 set_bit(GLF_LFLUSH, &gl->gl_flags);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000333 list_add(&le->le_list, &sdp->sd_log_le_revoke);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000334}
335
336static void revoke_lo_before_commit(struct gfs2_sbd *sdp)
337{
338 struct gfs2_log_descriptor *ld;
339 struct gfs2_meta_header *mh;
340 struct buffer_head *bh;
341 unsigned int offset;
342 struct list_head *head = &sdp->sd_log_le_revoke;
Steven Whitehouse82e86082007-09-02 15:39:43 +0100343 struct gfs2_bufdata *bd;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000344
345 if (!sdp->sd_log_num_revoke)
346 return;
347
Steven Whitehouse16615be2007-09-17 10:59:52 +0100348 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE);
349 ld = bh_log_desc(bh);
Steven Whitehouse568f4c92006-02-27 12:00:42 -0500350 ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke,
Steven Whitehousecd915492006-09-04 12:49:07 -0400351 sizeof(u64)));
David Teiglandb3b94fa2006-01-16 16:50:04 +0000352 ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000353 offset = sizeof(struct gfs2_log_descriptor);
354
Steven Whitehousef42ab082011-04-14 16:50:31 +0100355 list_for_each_entry(bd, head, bd_le.le_list) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000356 sdp->sd_log_num_revoke--;
357
Steven Whitehousecd915492006-09-04 12:49:07 -0400358 if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) {
Jens Axboe721a9602011-03-09 11:56:30 +0100359 submit_bh(WRITE_SYNC, bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000360
361 bh = gfs2_log_get_buf(sdp);
362 mh = (struct gfs2_meta_header *)bh->b_data;
363 mh->mh_magic = cpu_to_be32(GFS2_MAGIC);
Steven Whitehousee3167de2006-03-30 15:46:23 -0500364 mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB);
365 mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000366 offset = sizeof(struct gfs2_meta_header);
367 }
368
Steven Whitehouse82e86082007-09-02 15:39:43 +0100369 *(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno);
Steven Whitehousecd915492006-09-04 12:49:07 -0400370 offset += sizeof(u64);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000371 }
372 gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke);
373
Jens Axboe721a9602011-03-09 11:56:30 +0100374 submit_bh(WRITE_SYNC, bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000375}
376
Steven Whitehousef42ab082011-04-14 16:50:31 +0100377static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
378{
379 struct list_head *head = &sdp->sd_log_le_revoke;
380 struct gfs2_bufdata *bd;
381 struct gfs2_glock *gl;
382
383 while (!list_empty(head)) {
384 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
385 list_del_init(&bd->bd_le.le_list);
386 gl = bd->bd_gl;
387 atomic_dec(&gl->gl_revokes);
388 clear_bit(GLF_LFLUSH, &gl->gl_flags);
389 kmem_cache_free(gfs2_bufdata_cachep, bd);
390 }
391}
392
David Teiglandb3b94fa2006-01-16 16:50:04 +0000393static void revoke_lo_before_scan(struct gfs2_jdesc *jd,
Al Viro55167622006-10-13 21:47:13 -0400394 struct gfs2_log_header_host *head, int pass)
David Teiglandb3b94fa2006-01-16 16:50:04 +0000395{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400396 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000397
398 if (pass != 0)
399 return;
400
401 sdp->sd_found_revokes = 0;
402 sdp->sd_replay_tail = head->lh_tail;
403}
404
405static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
406 struct gfs2_log_descriptor *ld, __be64 *ptr,
407 int pass)
408{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400409 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000410 unsigned int blks = be32_to_cpu(ld->ld_length);
411 unsigned int revokes = be32_to_cpu(ld->ld_data1);
412 struct buffer_head *bh;
413 unsigned int offset;
Steven Whitehousecd915492006-09-04 12:49:07 -0400414 u64 blkno;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000415 int first = 1;
416 int error;
417
418 if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE)
419 return 0;
420
421 offset = sizeof(struct gfs2_log_descriptor);
422
423 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
424 error = gfs2_replay_read_block(jd, start, &bh);
425 if (error)
426 return error;
427
428 if (!first)
429 gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB);
430
Steven Whitehousecd915492006-09-04 12:49:07 -0400431 while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000432 blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset));
433
434 error = gfs2_revoke_add(sdp, blkno, start);
Bob Peterson3ad62e82008-01-28 16:35:13 -0600435 if (error < 0) {
436 brelse(bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000437 return error;
Bob Peterson3ad62e82008-01-28 16:35:13 -0600438 }
David Teiglandb3b94fa2006-01-16 16:50:04 +0000439 else if (error)
440 sdp->sd_found_revokes++;
441
442 if (!--revokes)
443 break;
Steven Whitehousecd915492006-09-04 12:49:07 -0400444 offset += sizeof(u64);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000445 }
446
447 brelse(bh);
448 offset = sizeof(struct gfs2_meta_header);
449 first = 0;
450 }
451
452 return 0;
453}
454
455static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
456{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400457 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000458
459 if (error) {
460 gfs2_revoke_clean(sdp);
461 return;
462 }
463 if (pass != 1)
464 return;
465
466 fs_info(sdp, "jid=%u: Found %u revoke tags\n",
467 jd->jd_jid, sdp->sd_found_revokes);
468
469 gfs2_revoke_clean(sdp);
470}
471
472static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
473{
474 struct gfs2_rgrpd *rgd;
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500475 struct gfs2_trans *tr = current->journal_info;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000476
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500477 tr->tr_touched = 1;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000478
David Teiglandb3b94fa2006-01-16 16:50:04 +0000479 rgd = container_of(le, struct gfs2_rgrpd, rd_le);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000480
481 gfs2_log_lock(sdp);
Benjamin Marzinski68835622007-03-23 09:05:12 +0000482 if (!list_empty(&le->le_list)){
483 gfs2_log_unlock(sdp);
484 return;
485 }
486 gfs2_rgrp_bh_hold(rgd);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000487 sdp->sd_log_num_rg++;
488 list_add(&le->le_list, &sdp->sd_log_le_rg);
Steven Whitehouse907b9bc2006-09-25 09:26:04 -0400489 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000490}
491
492static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
493{
494 struct list_head *head = &sdp->sd_log_le_rg;
495 struct gfs2_rgrpd *rgd;
496
497 while (!list_empty(head)) {
498 rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list);
499 list_del_init(&rgd->rd_le.le_list);
500 sdp->sd_log_num_rg--;
501
502 gfs2_rgrp_repolish_clones(rgd);
503 gfs2_rgrp_bh_put(rgd);
504 }
505 gfs2_assert_warn(sdp, !sdp->sd_log_num_rg);
506}
507
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000508/**
509 * databuf_lo_add - Add a databuf to the transaction.
510 *
511 * This is used in two distinct cases:
512 * i) In ordered write mode
513 * We put the data buffer on a list so that we can ensure that its
514 * synced to disk at the right time
515 * ii) In journaled data mode
516 * We need to journal the data block in the same way as metadata in
517 * the functions above. The difference is that here we have a tag
518 * which is two __be64's being the block number (as per meta data)
519 * and a flag which says whether the data block needs escaping or
520 * not. This means we need a new log entry for each 251 or so data
521 * blocks, which isn't an enormous overhead but twice as much as
522 * for normal metadata blocks.
523 */
David Teiglandb3b94fa2006-01-16 16:50:04 +0000524static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
525{
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000526 struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500527 struct gfs2_trans *tr = current->journal_info;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000528 struct address_space *mapping = bd->bd_bh->b_page->mapping;
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400529 struct gfs2_inode *ip = GFS2_I(mapping->host);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000530
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100531 lock_buffer(bd->bd_bh);
Steven Whitehouse8bd95722007-01-25 10:04:20 +0000532 gfs2_log_lock(sdp);
Steven Whitehouse9ff8ec32007-09-28 13:49:05 +0100533 if (tr) {
534 if (!list_empty(&bd->bd_list_tr))
535 goto out;
536 tr->tr_touched = 1;
537 if (gfs2_is_jdata(ip)) {
538 tr->tr_num_buf++;
539 list_add(&bd->bd_list_tr, &tr->tr_list_buf);
540 }
Robert Peterson773ed1a2007-06-20 08:34:06 -0500541 }
Robert Peterson2332c442007-06-18 14:50:20 -0500542 if (!list_empty(&le->le_list))
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100543 goto out;
Robert Peterson2332c442007-06-18 14:50:20 -0500544
Steven Whitehouse2bcd6102007-11-08 14:25:12 +0000545 set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
546 set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
Robert Peterson2332c442007-06-18 14:50:20 -0500547 if (gfs2_is_jdata(ip)) {
Robert Peterson2332c442007-06-18 14:50:20 -0500548 gfs2_pin(sdp, bd->bd_bh);
549 tr->tr_num_databuf_new++;
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100550 sdp->sd_log_num_databuf++;
Dave Chinnere5884632010-02-05 16:45:25 +1100551 list_add_tail(&le->le_list, &sdp->sd_log_le_databuf);
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100552 } else {
Dave Chinnere5884632010-02-05 16:45:25 +1100553 list_add_tail(&le->le_list, &sdp->sd_log_le_ordered);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100554 }
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100555out:
David Teiglandb3b94fa2006-01-16 16:50:04 +0000556 gfs2_log_unlock(sdp);
Steven Whitehouse9b9107a2007-08-27 13:54:05 +0100557 unlock_buffer(bd->bd_bh);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000558}
559
Steven Whitehouse16615be2007-09-17 10:59:52 +0100560static void gfs2_check_magic(struct buffer_head *bh)
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000561{
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000562 void *kaddr;
563 __be32 *ptr;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000564
Steven Whitehouse16615be2007-09-17 10:59:52 +0100565 clear_buffer_escaped(bh);
566 kaddr = kmap_atomic(bh->b_page, KM_USER0);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000567 ptr = kaddr + bh_offset(bh);
568 if (*ptr == cpu_to_be32(GFS2_MAGIC))
Steven Whitehouse16615be2007-09-17 10:59:52 +0100569 set_buffer_escaped(bh);
Russell Cattelanc312c4f2006-10-12 09:23:41 -0400570 kunmap_atomic(kaddr, KM_USER0);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100571}
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000572
Steven Whitehouse16615be2007-09-17 10:59:52 +0100573static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh,
574 struct list_head *list, struct list_head *done,
575 unsigned int n)
576{
577 struct buffer_head *bh1;
578 struct gfs2_log_descriptor *ld;
579 struct gfs2_bufdata *bd;
580 __be64 *ptr;
581
582 if (!bh)
583 return;
584
585 ld = bh_log_desc(bh);
586 ld->ld_length = cpu_to_be32(n + 1);
587 ld->ld_data1 = cpu_to_be32(n);
588
589 ptr = bh_log_ptr(bh);
590
591 get_bh(bh);
Jens Axboe721a9602011-03-09 11:56:30 +0100592 submit_bh(WRITE_SYNC, bh);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100593 gfs2_log_lock(sdp);
594 while(!list_empty(list)) {
595 bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list);
596 list_move_tail(&bd->bd_le.le_list, done);
597 get_bh(bd->bd_bh);
598 while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) {
599 gfs2_log_incr_head(sdp);
600 ptr += 2;
601 }
602 gfs2_log_unlock(sdp);
603 lock_buffer(bd->bd_bh);
604 if (buffer_escaped(bd->bd_bh)) {
605 void *kaddr;
606 bh1 = gfs2_log_get_buf(sdp);
607 kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0);
608 memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh),
609 bh1->b_size);
610 kunmap_atomic(kaddr, KM_USER0);
611 *(__be32 *)bh1->b_data = 0;
612 clear_buffer_escaped(bd->bd_bh);
613 unlock_buffer(bd->bd_bh);
614 brelse(bd->bd_bh);
615 } else {
616 bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh);
617 }
Jens Axboe721a9602011-03-09 11:56:30 +0100618 submit_bh(WRITE_SYNC, bh1);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100619 gfs2_log_lock(sdp);
620 ptr += 2;
621 }
622 gfs2_log_unlock(sdp);
623 brelse(bh);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000624}
625
626/**
627 * databuf_lo_before_commit - Scan the data buffers, writing as we go
628 *
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000629 */
Steven Whitehoused7b616e2007-09-02 10:48:13 +0100630
David Teiglandb3b94fa2006-01-16 16:50:04 +0000631static void databuf_lo_before_commit(struct gfs2_sbd *sdp)
632{
Steven Whitehouse16615be2007-09-17 10:59:52 +0100633 struct gfs2_bufdata *bd = NULL;
634 struct buffer_head *bh = NULL;
635 unsigned int n = 0;
636 __be64 *ptr = NULL, *end = NULL;
637 LIST_HEAD(processed);
638 LIST_HEAD(in_progress);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000639
Steven Whitehousef55ab262006-02-21 12:51:39 +0000640 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100641 while (!list_empty(&sdp->sd_log_le_databuf)) {
642 if (ptr == end) {
Steven Whitehousef55ab262006-02-21 12:51:39 +0000643 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100644 gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
645 n = 0;
646 bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA);
647 ptr = bh_log_ptr(bh);
648 end = bh_ptr_end(bh) - 1;
Steven Whitehousef55ab262006-02-21 12:51:39 +0000649 gfs2_log_lock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100650 continue;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000651 }
Steven Whitehouse16615be2007-09-17 10:59:52 +0100652 bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list);
653 list_move_tail(&bd->bd_le.le_list, &in_progress);
654 gfs2_check_magic(bd->bd_bh);
655 *ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr);
656 *ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0);
657 n++;
David Teiglandb3b94fa2006-01-16 16:50:04 +0000658 }
Steven Whitehousef55ab262006-02-21 12:51:39 +0000659 gfs2_log_unlock(sdp);
Steven Whitehouse16615be2007-09-17 10:59:52 +0100660 gfs2_write_blocks(sdp, bh, &in_progress, &processed, n);
661 gfs2_log_lock(sdp);
662 list_splice(&processed, &sdp->sd_log_le_databuf);
663 gfs2_log_unlock(sdp);
David Teiglandb3b94fa2006-01-16 16:50:04 +0000664}
665
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000666static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start,
667 struct gfs2_log_descriptor *ld,
668 __be64 *ptr, int pass)
669{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400670 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
671 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse5c676f62006-02-27 17:23:27 -0500672 struct gfs2_glock *gl = ip->i_gl;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000673 unsigned int blks = be32_to_cpu(ld->ld_data1);
674 struct buffer_head *bh_log, *bh_ip;
Steven Whitehousecd915492006-09-04 12:49:07 -0400675 u64 blkno;
676 u64 esc;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000677 int error = 0;
678
679 if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA)
680 return 0;
681
682 gfs2_replay_incr_blk(sdp, &start);
683 for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) {
684 blkno = be64_to_cpu(*ptr++);
685 esc = be64_to_cpu(*ptr++);
686
687 sdp->sd_found_blocks++;
688
689 if (gfs2_revoke_check(sdp, blkno, start))
690 continue;
691
692 error = gfs2_replay_read_block(jd, start, &bh_log);
693 if (error)
694 return error;
695
696 bh_ip = gfs2_meta_new(gl, blkno);
697 memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size);
698
699 /* Unescape */
700 if (esc) {
701 __be32 *eptr = (__be32 *)bh_ip->b_data;
702 *eptr = cpu_to_be32(GFS2_MAGIC);
703 }
704 mark_buffer_dirty(bh_ip);
705
706 brelse(bh_log);
707 brelse(bh_ip);
708 if (error)
709 break;
710
711 sdp->sd_replayed_blocks++;
712 }
713
714 return error;
715}
716
717/* FIXME: sort out accounting for log blocks etc. */
718
719static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass)
720{
Steven Whitehousefeaa7bb2006-06-14 15:32:57 -0400721 struct gfs2_inode *ip = GFS2_I(jd->jd_inode);
722 struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000723
724 if (error) {
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400725 gfs2_meta_sync(ip->i_gl);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000726 return;
727 }
728 if (pass != 1)
729 return;
730
731 /* data sync? */
Steven Whitehouse7276b3b2006-09-21 17:05:23 -0400732 gfs2_meta_sync(ip->i_gl);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000733
734 fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n",
735 jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks);
736}
737
738static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai)
739{
740 struct list_head *head = &sdp->sd_log_le_databuf;
741 struct gfs2_bufdata *bd;
742
743 while (!list_empty(head)) {
744 bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list);
Steven Whitehouseb8e1aab2006-08-22 16:25:50 -0400745 list_del_init(&bd->bd_le.le_list);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000746 sdp->sd_log_num_databuf--;
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000747 gfs2_unpin(sdp, bd->bd_bh, ai);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000748 }
749 gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf);
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000750}
751
752
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400753const struct gfs2_log_operations gfs2_buf_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000754 .lo_add = buf_lo_add,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000755 .lo_before_commit = buf_lo_before_commit,
756 .lo_after_commit = buf_lo_after_commit,
757 .lo_before_scan = buf_lo_before_scan,
758 .lo_scan_elements = buf_lo_scan_elements,
759 .lo_after_scan = buf_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400760 .lo_name = "buf",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000761};
762
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400763const struct gfs2_log_operations gfs2_revoke_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000764 .lo_add = revoke_lo_add,
765 .lo_before_commit = revoke_lo_before_commit,
Steven Whitehousef42ab082011-04-14 16:50:31 +0100766 .lo_after_commit = revoke_lo_after_commit,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000767 .lo_before_scan = revoke_lo_before_scan,
768 .lo_scan_elements = revoke_lo_scan_elements,
769 .lo_after_scan = revoke_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400770 .lo_name = "revoke",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000771};
772
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400773const struct gfs2_log_operations gfs2_rg_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000774 .lo_add = rg_lo_add,
775 .lo_after_commit = rg_lo_after_commit,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400776 .lo_name = "rg",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000777};
778
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400779const struct gfs2_log_operations gfs2_databuf_lops = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000780 .lo_add = databuf_lo_add,
781 .lo_before_commit = databuf_lo_before_commit,
Steven Whitehouse18ec7d52006-02-08 11:50:51 +0000782 .lo_after_commit = databuf_lo_after_commit,
783 .lo_scan_elements = databuf_lo_scan_elements,
784 .lo_after_scan = databuf_lo_after_scan,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400785 .lo_name = "databuf",
David Teiglandb3b94fa2006-01-16 16:50:04 +0000786};
787
Steven Whitehouseb09e5932006-04-07 11:17:32 -0400788const struct gfs2_log_operations *gfs2_log_ops[] = {
David Teiglandb3b94fa2006-01-16 16:50:04 +0000789 &gfs2_databuf_lops,
Steven Whitehouse16615be2007-09-17 10:59:52 +0100790 &gfs2_buf_lops,
791 &gfs2_rg_lops,
792 &gfs2_revoke_lops,
Steven Whitehouseea67eed2006-09-05 10:53:09 -0400793 NULL,
David Teiglandb3b94fa2006-01-16 16:50:04 +0000794};
795