David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. |
Steven Whitehouse | 3a8a9a1 | 2006-05-18 15:09:15 -0400 | [diff] [blame] | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 4 | * |
| 5 | * This copyrighted material is made available to anyone wishing to use, |
| 6 | * modify, copy, or redistribute it subject to the terms and conditions |
Steven Whitehouse | e9fc2aa | 2006-09-01 11:05:15 -0400 | [diff] [blame] | 7 | * of the GNU General Public License version 2. |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 8 | */ |
| 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 Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 15 | #include <linux/gfs2_ondisk.h> |
Fabio Massimo Di Nitto | 7d30859 | 2006-09-19 07:56:29 +0200 | [diff] [blame] | 16 | #include <linux/lm_interface.h> |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 17 | |
| 18 | #include "gfs2.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 19 | #include "incore.h" |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 20 | #include "inode.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 21 | #include "glock.h" |
| 22 | #include "log.h" |
| 23 | #include "lops.h" |
| 24 | #include "meta_io.h" |
| 25 | #include "recovery.h" |
| 26 | #include "rgrp.h" |
| 27 | #include "trans.h" |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 28 | #include "util.h" |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 29 | |
| 30 | static void glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 31 | { |
| 32 | struct gfs2_glock *gl; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 33 | struct gfs2_trans *tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 34 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 35 | tr->tr_touched = 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 36 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 37 | gl = container_of(le, struct gfs2_glock, gl_le); |
| 38 | if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl))) |
| 39 | return; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 40 | |
| 41 | gfs2_log_lock(sdp); |
Benjamin Marzinski | 6883562 | 2007-03-23 09:05:12 +0000 | [diff] [blame] | 42 | if (!list_empty(&le->le_list)){ |
| 43 | gfs2_log_unlock(sdp); |
| 44 | return; |
| 45 | } |
| 46 | gfs2_glock_hold(gl); |
| 47 | set_bit(GLF_DIRTY, &gl->gl_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 48 | sdp->sd_log_num_gl++; |
| 49 | list_add(&le->le_list, &sdp->sd_log_le_gl); |
| 50 | gfs2_log_unlock(sdp); |
| 51 | } |
| 52 | |
| 53 | static void glock_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 54 | { |
| 55 | struct list_head *head = &sdp->sd_log_le_gl; |
| 56 | struct gfs2_glock *gl; |
| 57 | |
| 58 | while (!list_empty(head)) { |
| 59 | gl = list_entry(head->next, struct gfs2_glock, gl_le.le_list); |
| 60 | list_del_init(&gl->gl_le.le_list); |
| 61 | sdp->sd_log_num_gl--; |
| 62 | |
| 63 | gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl)); |
| 64 | gfs2_glock_put(gl); |
| 65 | } |
| 66 | gfs2_assert_warn(sdp, !sdp->sd_log_num_gl); |
| 67 | } |
| 68 | |
| 69 | static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 70 | { |
| 71 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
| 72 | struct gfs2_trans *tr; |
| 73 | |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 74 | gfs2_log_lock(sdp); |
| 75 | if (!list_empty(&bd->bd_list_tr)) { |
| 76 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 77 | return; |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 78 | } |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 79 | tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 80 | tr->tr_touched = 1; |
| 81 | tr->tr_num_buf++; |
| 82 | list_add(&bd->bd_list_tr, &tr->tr_list_buf); |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 83 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 84 | |
| 85 | if (!list_empty(&le->le_list)) |
| 86 | return; |
| 87 | |
| 88 | gfs2_trans_add_gl(bd->bd_gl); |
| 89 | |
| 90 | gfs2_meta_check(sdp, bd->bd_bh); |
Steven Whitehouse | a98ab22 | 2006-01-18 13:38:44 +0000 | [diff] [blame] | 91 | gfs2_pin(sdp, bd->bd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 92 | gfs2_log_lock(sdp); |
| 93 | sdp->sd_log_num_buf++; |
| 94 | list_add(&le->le_list, &sdp->sd_log_le_buf); |
| 95 | gfs2_log_unlock(sdp); |
| 96 | |
| 97 | tr->tr_num_buf_new++; |
| 98 | } |
| 99 | |
| 100 | static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
| 101 | { |
| 102 | struct list_head *head = &tr->tr_list_buf; |
| 103 | struct gfs2_bufdata *bd; |
| 104 | |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 105 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 106 | while (!list_empty(head)) { |
| 107 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr); |
| 108 | list_del_init(&bd->bd_list_tr); |
| 109 | tr->tr_num_buf--; |
| 110 | } |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 111 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 112 | gfs2_assert_warn(sdp, !tr->tr_num_buf); |
| 113 | } |
| 114 | |
| 115 | static void buf_lo_before_commit(struct gfs2_sbd *sdp) |
| 116 | { |
| 117 | struct buffer_head *bh; |
| 118 | struct gfs2_log_descriptor *ld; |
| 119 | struct gfs2_bufdata *bd1 = NULL, *bd2; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 120 | unsigned int total; |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 121 | unsigned int offset = BUF_OFFSET; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 122 | unsigned int limit; |
| 123 | unsigned int num; |
| 124 | unsigned n; |
| 125 | __be64 *ptr; |
| 126 | |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 127 | limit = buf_limit(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 128 | /* for 4k blocks, limit = 503 */ |
| 129 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 130 | gfs2_log_lock(sdp); |
| 131 | total = sdp->sd_log_num_buf; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 132 | bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); |
| 133 | while(total) { |
| 134 | num = total; |
| 135 | if (total > limit) |
| 136 | num = limit; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 137 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 138 | bh = gfs2_log_get_buf(sdp); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 139 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 140 | ld = (struct gfs2_log_descriptor *)bh->b_data; |
| 141 | ptr = (__be64 *)(bh->b_data + offset); |
| 142 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 143 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); |
| 144 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 145 | ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_METADATA); |
| 146 | ld->ld_length = cpu_to_be32(num + 1); |
| 147 | ld->ld_data1 = cpu_to_be32(num); |
| 148 | ld->ld_data2 = cpu_to_be32(0); |
| 149 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); |
| 150 | |
| 151 | n = 0; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 152 | list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, |
| 153 | bd_le.le_list) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 154 | *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); |
| 155 | if (++n >= num) |
| 156 | break; |
| 157 | } |
| 158 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 159 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 160 | set_buffer_dirty(bh); |
| 161 | ll_rw_block(WRITE, 1, &bh); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 162 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 163 | |
| 164 | n = 0; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 165 | list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, |
| 166 | bd_le.le_list) { |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 167 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 168 | bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); |
| 169 | set_buffer_dirty(bh); |
| 170 | ll_rw_block(WRITE, 1, &bh); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 171 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 172 | if (++n >= num) |
| 173 | break; |
| 174 | } |
| 175 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 176 | BUG_ON(total < num); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 177 | total -= num; |
| 178 | } |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 179 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 180 | } |
| 181 | |
| 182 | static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 183 | { |
| 184 | struct list_head *head = &sdp->sd_log_le_buf; |
| 185 | struct gfs2_bufdata *bd; |
| 186 | |
| 187 | while (!list_empty(head)) { |
| 188 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); |
| 189 | list_del_init(&bd->bd_le.le_list); |
| 190 | sdp->sd_log_num_buf--; |
| 191 | |
Steven Whitehouse | a98ab22 | 2006-01-18 13:38:44 +0000 | [diff] [blame] | 192 | gfs2_unpin(sdp, bd->bd_bh, ai); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 193 | } |
| 194 | gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); |
| 195 | } |
| 196 | |
| 197 | static void buf_lo_before_scan(struct gfs2_jdesc *jd, |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 198 | struct gfs2_log_header_host *head, int pass) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 199 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 200 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 201 | |
| 202 | if (pass != 0) |
| 203 | return; |
| 204 | |
| 205 | sdp->sd_found_blocks = 0; |
| 206 | sdp->sd_replayed_blocks = 0; |
| 207 | } |
| 208 | |
| 209 | static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 210 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
| 211 | int pass) |
| 212 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 213 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 214 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 215 | struct gfs2_glock *gl = ip->i_gl; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 216 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
| 217 | struct buffer_head *bh_log, *bh_ip; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 218 | u64 blkno; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 219 | int error = 0; |
| 220 | |
| 221 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) |
| 222 | return 0; |
| 223 | |
| 224 | gfs2_replay_incr_blk(sdp, &start); |
| 225 | |
| 226 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 227 | blkno = be64_to_cpu(*ptr++); |
| 228 | |
| 229 | sdp->sd_found_blocks++; |
| 230 | |
| 231 | if (gfs2_revoke_check(sdp, blkno, start)) |
| 232 | continue; |
| 233 | |
| 234 | error = gfs2_replay_read_block(jd, start, &bh_log); |
Steven Whitehouse | 82ffa51 | 2006-09-04 14:47:06 -0400 | [diff] [blame] | 235 | if (error) |
| 236 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 237 | |
| 238 | bh_ip = gfs2_meta_new(gl, blkno); |
| 239 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); |
| 240 | |
| 241 | if (gfs2_meta_check(sdp, bh_ip)) |
| 242 | error = -EIO; |
| 243 | else |
| 244 | mark_buffer_dirty(bh_ip); |
| 245 | |
| 246 | brelse(bh_log); |
| 247 | brelse(bh_ip); |
| 248 | |
| 249 | if (error) |
| 250 | break; |
| 251 | |
| 252 | sdp->sd_replayed_blocks++; |
| 253 | } |
| 254 | |
| 255 | return error; |
| 256 | } |
| 257 | |
| 258 | static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 259 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 260 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 261 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 262 | |
| 263 | if (error) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 264 | gfs2_meta_sync(ip->i_gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 265 | return; |
| 266 | } |
| 267 | if (pass != 1) |
| 268 | return; |
| 269 | |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 270 | gfs2_meta_sync(ip->i_gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 271 | |
| 272 | fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", |
| 273 | jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); |
| 274 | } |
| 275 | |
| 276 | static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 277 | { |
| 278 | struct gfs2_trans *tr; |
| 279 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 280 | tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 281 | tr->tr_touched = 1; |
| 282 | tr->tr_num_revoke++; |
| 283 | |
| 284 | gfs2_log_lock(sdp); |
| 285 | sdp->sd_log_num_revoke++; |
| 286 | list_add(&le->le_list, &sdp->sd_log_le_revoke); |
| 287 | gfs2_log_unlock(sdp); |
| 288 | } |
| 289 | |
| 290 | static void revoke_lo_before_commit(struct gfs2_sbd *sdp) |
| 291 | { |
| 292 | struct gfs2_log_descriptor *ld; |
| 293 | struct gfs2_meta_header *mh; |
| 294 | struct buffer_head *bh; |
| 295 | unsigned int offset; |
| 296 | struct list_head *head = &sdp->sd_log_le_revoke; |
| 297 | struct gfs2_revoke *rv; |
| 298 | |
| 299 | if (!sdp->sd_log_num_revoke) |
| 300 | return; |
| 301 | |
| 302 | bh = gfs2_log_get_buf(sdp); |
| 303 | ld = (struct gfs2_log_descriptor *)bh->b_data; |
| 304 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 305 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); |
| 306 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 307 | ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_REVOKE); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 308 | ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 309 | sizeof(u64))); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 310 | ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); |
| 311 | ld->ld_data2 = cpu_to_be32(0); |
| 312 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); |
| 313 | offset = sizeof(struct gfs2_log_descriptor); |
| 314 | |
| 315 | while (!list_empty(head)) { |
| 316 | rv = list_entry(head->next, struct gfs2_revoke, rv_le.le_list); |
Steven Whitehouse | 13538b8 | 2006-02-22 11:15:03 +0000 | [diff] [blame] | 317 | list_del_init(&rv->rv_le.le_list); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 318 | sdp->sd_log_num_revoke--; |
| 319 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 320 | if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 321 | set_buffer_dirty(bh); |
| 322 | ll_rw_block(WRITE, 1, &bh); |
| 323 | |
| 324 | bh = gfs2_log_get_buf(sdp); |
| 325 | mh = (struct gfs2_meta_header *)bh->b_data; |
| 326 | mh->mh_magic = cpu_to_be32(GFS2_MAGIC); |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 327 | mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); |
| 328 | mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 329 | offset = sizeof(struct gfs2_meta_header); |
| 330 | } |
| 331 | |
| 332 | *(__be64 *)(bh->b_data + offset) = cpu_to_be64(rv->rv_blkno); |
| 333 | kfree(rv); |
| 334 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 335 | offset += sizeof(u64); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 336 | } |
| 337 | gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); |
| 338 | |
| 339 | set_buffer_dirty(bh); |
| 340 | ll_rw_block(WRITE, 1, &bh); |
| 341 | } |
| 342 | |
| 343 | static void revoke_lo_before_scan(struct gfs2_jdesc *jd, |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 344 | struct gfs2_log_header_host *head, int pass) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 345 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 346 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 347 | |
| 348 | if (pass != 0) |
| 349 | return; |
| 350 | |
| 351 | sdp->sd_found_revokes = 0; |
| 352 | sdp->sd_replay_tail = head->lh_tail; |
| 353 | } |
| 354 | |
| 355 | static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 356 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
| 357 | int pass) |
| 358 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 359 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 360 | unsigned int blks = be32_to_cpu(ld->ld_length); |
| 361 | unsigned int revokes = be32_to_cpu(ld->ld_data1); |
| 362 | struct buffer_head *bh; |
| 363 | unsigned int offset; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 364 | u64 blkno; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 365 | int first = 1; |
| 366 | int error; |
| 367 | |
| 368 | if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) |
| 369 | return 0; |
| 370 | |
| 371 | offset = sizeof(struct gfs2_log_descriptor); |
| 372 | |
| 373 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 374 | error = gfs2_replay_read_block(jd, start, &bh); |
| 375 | if (error) |
| 376 | return error; |
| 377 | |
| 378 | if (!first) |
| 379 | gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); |
| 380 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 381 | while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 382 | blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); |
| 383 | |
| 384 | error = gfs2_revoke_add(sdp, blkno, start); |
| 385 | if (error < 0) |
| 386 | return error; |
| 387 | else if (error) |
| 388 | sdp->sd_found_revokes++; |
| 389 | |
| 390 | if (!--revokes) |
| 391 | break; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 392 | offset += sizeof(u64); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | brelse(bh); |
| 396 | offset = sizeof(struct gfs2_meta_header); |
| 397 | first = 0; |
| 398 | } |
| 399 | |
| 400 | return 0; |
| 401 | } |
| 402 | |
| 403 | static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 404 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 405 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 406 | |
| 407 | if (error) { |
| 408 | gfs2_revoke_clean(sdp); |
| 409 | return; |
| 410 | } |
| 411 | if (pass != 1) |
| 412 | return; |
| 413 | |
| 414 | fs_info(sdp, "jid=%u: Found %u revoke tags\n", |
| 415 | jd->jd_jid, sdp->sd_found_revokes); |
| 416 | |
| 417 | gfs2_revoke_clean(sdp); |
| 418 | } |
| 419 | |
| 420 | static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 421 | { |
| 422 | struct gfs2_rgrpd *rgd; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 423 | struct gfs2_trans *tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 424 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 425 | tr->tr_touched = 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 426 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 427 | rgd = container_of(le, struct gfs2_rgrpd, rd_le); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 428 | |
| 429 | gfs2_log_lock(sdp); |
Benjamin Marzinski | 6883562 | 2007-03-23 09:05:12 +0000 | [diff] [blame] | 430 | if (!list_empty(&le->le_list)){ |
| 431 | gfs2_log_unlock(sdp); |
| 432 | return; |
| 433 | } |
| 434 | gfs2_rgrp_bh_hold(rgd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 435 | sdp->sd_log_num_rg++; |
| 436 | list_add(&le->le_list, &sdp->sd_log_le_rg); |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 437 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 438 | } |
| 439 | |
| 440 | static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 441 | { |
| 442 | struct list_head *head = &sdp->sd_log_le_rg; |
| 443 | struct gfs2_rgrpd *rgd; |
| 444 | |
| 445 | while (!list_empty(head)) { |
| 446 | rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list); |
| 447 | list_del_init(&rgd->rd_le.le_list); |
| 448 | sdp->sd_log_num_rg--; |
| 449 | |
| 450 | gfs2_rgrp_repolish_clones(rgd); |
| 451 | gfs2_rgrp_bh_put(rgd); |
| 452 | } |
| 453 | gfs2_assert_warn(sdp, !sdp->sd_log_num_rg); |
| 454 | } |
| 455 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 456 | /** |
| 457 | * databuf_lo_add - Add a databuf to the transaction. |
| 458 | * |
| 459 | * This is used in two distinct cases: |
| 460 | * i) In ordered write mode |
| 461 | * We put the data buffer on a list so that we can ensure that its |
| 462 | * synced to disk at the right time |
| 463 | * ii) In journaled data mode |
| 464 | * We need to journal the data block in the same way as metadata in |
| 465 | * the functions above. The difference is that here we have a tag |
| 466 | * which is two __be64's being the block number (as per meta data) |
| 467 | * and a flag which says whether the data block needs escaping or |
| 468 | * not. This means we need a new log entry for each 251 or so data |
| 469 | * blocks, which isn't an enormous overhead but twice as much as |
| 470 | * for normal metadata blocks. |
| 471 | */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 472 | static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 473 | { |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 474 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 475 | struct gfs2_trans *tr = current->journal_info; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 476 | struct address_space *mapping = bd->bd_bh->b_page->mapping; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 477 | struct gfs2_inode *ip = GFS2_I(mapping->host); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 478 | |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 479 | gfs2_log_lock(sdp); |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 480 | if (!list_empty(&bd->bd_list_tr)) { |
| 481 | gfs2_log_unlock(sdp); |
| 482 | return; |
| 483 | } |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 484 | tr->tr_touched = 1; |
Robert Peterson | 773ed1a | 2007-06-20 08:34:06 -0500 | [diff] [blame] | 485 | if (gfs2_is_jdata(ip)) { |
| 486 | tr->tr_num_buf++; |
| 487 | list_add(&bd->bd_list_tr, &tr->tr_list_buf); |
| 488 | } |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 489 | gfs2_log_unlock(sdp); |
| 490 | if (!list_empty(&le->le_list)) |
| 491 | return; |
| 492 | |
Steven Whitehouse | b61dde7 | 2006-06-19 10:51:11 -0400 | [diff] [blame] | 493 | gfs2_trans_add_gl(bd->bd_gl); |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 494 | if (gfs2_is_jdata(ip)) { |
| 495 | sdp->sd_log_num_jdata++; |
| 496 | gfs2_pin(sdp, bd->bd_bh); |
| 497 | tr->tr_num_databuf_new++; |
Steven Whitehouse | 13538b8 | 2006-02-22 11:15:03 +0000 | [diff] [blame] | 498 | } |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 499 | gfs2_log_lock(sdp); |
Bob Peterson | bdcb885 | 2007-07-11 15:55:23 -0500 | [diff] [blame] | 500 | sdp->sd_log_num_databuf++; |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 501 | list_add(&le->le_list, &sdp->sd_log_le_databuf); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 502 | gfs2_log_unlock(sdp); |
| 503 | } |
| 504 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 505 | static int gfs2_check_magic(struct buffer_head *bh) |
| 506 | { |
| 507 | struct page *page = bh->b_page; |
| 508 | void *kaddr; |
| 509 | __be32 *ptr; |
| 510 | int rv = 0; |
| 511 | |
| 512 | kaddr = kmap_atomic(page, KM_USER0); |
| 513 | ptr = kaddr + bh_offset(bh); |
| 514 | if (*ptr == cpu_to_be32(GFS2_MAGIC)) |
| 515 | rv = 1; |
Russell Cattelan | c312c4f | 2006-10-12 09:23:41 -0400 | [diff] [blame] | 516 | kunmap_atomic(kaddr, KM_USER0); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 517 | |
| 518 | return rv; |
| 519 | } |
| 520 | |
| 521 | /** |
| 522 | * databuf_lo_before_commit - Scan the data buffers, writing as we go |
| 523 | * |
| 524 | * Here we scan through the lists of buffers and make the assumption |
| 525 | * that any buffer thats been pinned is being journaled, and that |
| 526 | * any unpinned buffer is an ordered write data buffer and therefore |
| 527 | * will be written back rather than journaled. |
| 528 | */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 529 | static void databuf_lo_before_commit(struct gfs2_sbd *sdp) |
| 530 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 531 | LIST_HEAD(started); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 532 | struct gfs2_bufdata *bd1 = NULL, *bd2, *bdt; |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 533 | struct buffer_head *bh = NULL,*bh1 = NULL; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 534 | struct gfs2_log_descriptor *ld; |
| 535 | unsigned int limit; |
Bob Peterson | bdcb885 | 2007-07-11 15:55:23 -0500 | [diff] [blame] | 536 | unsigned int total_dbuf; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 537 | unsigned int total_jdata; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 538 | unsigned int num, n; |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 539 | __be64 *ptr = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 540 | |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 541 | limit = databuf_limit(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 542 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 543 | /* |
| 544 | * Start writing ordered buffers, write journaled buffers |
| 545 | * into the log along with a header |
| 546 | */ |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 547 | gfs2_log_lock(sdp); |
Bob Peterson | bdcb885 | 2007-07-11 15:55:23 -0500 | [diff] [blame] | 548 | total_dbuf = sdp->sd_log_num_databuf; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 549 | total_jdata = sdp->sd_log_num_jdata; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 550 | bd2 = bd1 = list_prepare_entry(bd1, &sdp->sd_log_le_databuf, |
| 551 | bd_le.le_list); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 552 | while(total_dbuf) { |
| 553 | num = total_jdata; |
| 554 | if (num > limit) |
| 555 | num = limit; |
| 556 | n = 0; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 557 | list_for_each_entry_safe_continue(bd1, bdt, |
| 558 | &sdp->sd_log_le_databuf, |
| 559 | bd_le.le_list) { |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 560 | /* store off the buffer head in a local ptr since |
| 561 | * gfs2_bufdata might change when we drop the log lock |
| 562 | */ |
| 563 | bh1 = bd1->bd_bh; |
| 564 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 565 | /* An ordered write buffer */ |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 566 | if (bh1 && !buffer_pinned(bh1)) { |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 567 | list_move(&bd1->bd_le.le_list, &started); |
| 568 | if (bd1 == bd2) { |
| 569 | bd2 = NULL; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 570 | bd2 = list_prepare_entry(bd2, |
| 571 | &sdp->sd_log_le_databuf, |
| 572 | bd_le.le_list); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 573 | } |
| 574 | total_dbuf--; |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 575 | if (bh1) { |
| 576 | if (buffer_dirty(bh1)) { |
| 577 | get_bh(bh1); |
| 578 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 579 | gfs2_log_unlock(sdp); |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 580 | |
| 581 | ll_rw_block(SWRITE, 1, &bh1); |
| 582 | brelse(bh1); |
| 583 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 584 | gfs2_log_lock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 585 | } |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 586 | continue; |
| 587 | } |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 588 | continue; |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 589 | } else if (bh1) { /* A journaled buffer */ |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 590 | int magic; |
| 591 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 592 | if (!bh) { |
| 593 | bh = gfs2_log_get_buf(sdp); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 594 | ld = (struct gfs2_log_descriptor *) |
| 595 | bh->b_data; |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 596 | ptr = (__be64 *)(bh->b_data + |
| 597 | DATABUF_OFFSET); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 598 | ld->ld_header.mh_magic = |
| 599 | cpu_to_be32(GFS2_MAGIC); |
| 600 | ld->ld_header.mh_type = |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 601 | cpu_to_be32(GFS2_METATYPE_LD); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 602 | ld->ld_header.mh_format = |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 603 | cpu_to_be32(GFS2_FORMAT_LD); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 604 | ld->ld_type = |
| 605 | cpu_to_be32(GFS2_LOG_DESC_JDATA); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 606 | ld->ld_length = cpu_to_be32(num + 1); |
| 607 | ld->ld_data1 = cpu_to_be32(num); |
| 608 | ld->ld_data2 = cpu_to_be32(0); |
| 609 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); |
| 610 | } |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 611 | magic = gfs2_check_magic(bh1); |
| 612 | *ptr++ = cpu_to_be64(bh1->b_blocknr); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 613 | *ptr++ = cpu_to_be64((__u64)magic); |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 614 | clear_buffer_escaped(bh1); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 615 | if (unlikely(magic != 0)) |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 616 | set_buffer_escaped(bh1); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 617 | gfs2_log_lock(sdp); |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 618 | if (++n >= num) |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 619 | break; |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 620 | } else if (!bh1) { |
Steven Whitehouse | 623d935 | 2006-08-31 12:14:44 -0400 | [diff] [blame] | 621 | total_dbuf--; |
| 622 | sdp->sd_log_num_databuf--; |
| 623 | list_del_init(&bd1->bd_le.le_list); |
| 624 | if (bd1 == bd2) { |
| 625 | bd2 = NULL; |
| 626 | bd2 = list_prepare_entry(bd2, |
| 627 | &sdp->sd_log_le_databuf, |
| 628 | bd_le.le_list); |
| 629 | } |
| 630 | kmem_cache_free(gfs2_bufdata_cachep, bd1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 631 | } |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 632 | } |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 633 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 634 | if (bh) { |
| 635 | set_buffer_dirty(bh); |
| 636 | ll_rw_block(WRITE, 1, &bh); |
| 637 | bh = NULL; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame^] | 638 | ptr = NULL; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 639 | } |
| 640 | n = 0; |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 641 | gfs2_log_lock(sdp); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 642 | list_for_each_entry_continue(bd2, &sdp->sd_log_le_databuf, |
| 643 | bd_le.le_list) { |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 644 | if (!bd2->bd_bh) |
| 645 | continue; |
| 646 | /* copy buffer if it needs escaping */ |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 647 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 648 | if (unlikely(buffer_escaped(bd2->bd_bh))) { |
| 649 | void *kaddr; |
| 650 | struct page *page = bd2->bd_bh->b_page; |
| 651 | bh = gfs2_log_get_buf(sdp); |
| 652 | kaddr = kmap_atomic(page, KM_USER0); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 653 | memcpy(bh->b_data, |
| 654 | kaddr + bh_offset(bd2->bd_bh), |
| 655 | sdp->sd_sb.sb_bsize); |
Russell Cattelan | c312c4f | 2006-10-12 09:23:41 -0400 | [diff] [blame] | 656 | kunmap_atomic(kaddr, KM_USER0); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 657 | *(__be32 *)bh->b_data = 0; |
| 658 | } else { |
| 659 | bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); |
| 660 | } |
| 661 | set_buffer_dirty(bh); |
| 662 | ll_rw_block(WRITE, 1, &bh); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 663 | gfs2_log_lock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 664 | if (++n >= num) |
| 665 | break; |
| 666 | } |
| 667 | bh = NULL; |
Bob Peterson | bdcb885 | 2007-07-11 15:55:23 -0500 | [diff] [blame] | 668 | BUG_ON(total_dbuf < num); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 669 | total_dbuf -= num; |
| 670 | total_jdata -= num; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 671 | } |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 672 | gfs2_log_unlock(sdp); |
| 673 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 674 | /* Wait on all ordered buffers */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 675 | while (!list_empty(&started)) { |
Steven Whitehouse | 13538b8 | 2006-02-22 11:15:03 +0000 | [diff] [blame] | 676 | gfs2_log_lock(sdp); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 677 | bd1 = list_entry(started.next, struct gfs2_bufdata, |
| 678 | bd_le.le_list); |
Steven Whitehouse | 0886760 | 2006-08-22 11:03:57 -0400 | [diff] [blame] | 679 | list_del_init(&bd1->bd_le.le_list); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 680 | sdp->sd_log_num_databuf--; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 681 | bh = bd1->bd_bh; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 682 | if (bh) { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 683 | bh->b_private = NULL; |
Steven Whitehouse | 15d00c0 | 2006-08-18 15:51:09 -0400 | [diff] [blame] | 684 | get_bh(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 685 | gfs2_log_unlock(sdp); |
| 686 | wait_on_buffer(bh); |
| 687 | brelse(bh); |
| 688 | } else |
| 689 | gfs2_log_unlock(sdp); |
| 690 | |
Steven Whitehouse | 3a8476d | 2006-06-19 09:10:39 -0400 | [diff] [blame] | 691 | kmem_cache_free(gfs2_bufdata_cachep, bd1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 692 | } |
| 693 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 694 | /* We've removed all the ordered write bufs here, so only jdata left */ |
| 695 | gfs2_assert_warn(sdp, sdp->sd_log_num_databuf == sdp->sd_log_num_jdata); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 696 | } |
| 697 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 698 | static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 699 | struct gfs2_log_descriptor *ld, |
| 700 | __be64 *ptr, int pass) |
| 701 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 702 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 703 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 704 | struct gfs2_glock *gl = ip->i_gl; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 705 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
| 706 | struct buffer_head *bh_log, *bh_ip; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 707 | u64 blkno; |
| 708 | u64 esc; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 709 | int error = 0; |
| 710 | |
| 711 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) |
| 712 | return 0; |
| 713 | |
| 714 | gfs2_replay_incr_blk(sdp, &start); |
| 715 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 716 | blkno = be64_to_cpu(*ptr++); |
| 717 | esc = be64_to_cpu(*ptr++); |
| 718 | |
| 719 | sdp->sd_found_blocks++; |
| 720 | |
| 721 | if (gfs2_revoke_check(sdp, blkno, start)) |
| 722 | continue; |
| 723 | |
| 724 | error = gfs2_replay_read_block(jd, start, &bh_log); |
| 725 | if (error) |
| 726 | return error; |
| 727 | |
| 728 | bh_ip = gfs2_meta_new(gl, blkno); |
| 729 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); |
| 730 | |
| 731 | /* Unescape */ |
| 732 | if (esc) { |
| 733 | __be32 *eptr = (__be32 *)bh_ip->b_data; |
| 734 | *eptr = cpu_to_be32(GFS2_MAGIC); |
| 735 | } |
| 736 | mark_buffer_dirty(bh_ip); |
| 737 | |
| 738 | brelse(bh_log); |
| 739 | brelse(bh_ip); |
| 740 | if (error) |
| 741 | break; |
| 742 | |
| 743 | sdp->sd_replayed_blocks++; |
| 744 | } |
| 745 | |
| 746 | return error; |
| 747 | } |
| 748 | |
| 749 | /* FIXME: sort out accounting for log blocks etc. */ |
| 750 | |
| 751 | static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 752 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 753 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 754 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 755 | |
| 756 | if (error) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 757 | gfs2_meta_sync(ip->i_gl); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 758 | return; |
| 759 | } |
| 760 | if (pass != 1) |
| 761 | return; |
| 762 | |
| 763 | /* data sync? */ |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 764 | gfs2_meta_sync(ip->i_gl); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 765 | |
| 766 | fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", |
| 767 | jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); |
| 768 | } |
| 769 | |
| 770 | static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 771 | { |
| 772 | struct list_head *head = &sdp->sd_log_le_databuf; |
| 773 | struct gfs2_bufdata *bd; |
| 774 | |
| 775 | while (!list_empty(head)) { |
| 776 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); |
Steven Whitehouse | b8e1aab | 2006-08-22 16:25:50 -0400 | [diff] [blame] | 777 | list_del_init(&bd->bd_le.le_list); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 778 | sdp->sd_log_num_databuf--; |
| 779 | sdp->sd_log_num_jdata--; |
| 780 | gfs2_unpin(sdp, bd->bd_bh, ai); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 781 | } |
| 782 | gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); |
| 783 | gfs2_assert_warn(sdp, !sdp->sd_log_num_jdata); |
| 784 | } |
| 785 | |
| 786 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 787 | const struct gfs2_log_operations gfs2_glock_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 788 | .lo_add = glock_lo_add, |
| 789 | .lo_after_commit = glock_lo_after_commit, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 790 | .lo_name = "glock", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 791 | }; |
| 792 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 793 | const struct gfs2_log_operations gfs2_buf_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 794 | .lo_add = buf_lo_add, |
| 795 | .lo_incore_commit = buf_lo_incore_commit, |
| 796 | .lo_before_commit = buf_lo_before_commit, |
| 797 | .lo_after_commit = buf_lo_after_commit, |
| 798 | .lo_before_scan = buf_lo_before_scan, |
| 799 | .lo_scan_elements = buf_lo_scan_elements, |
| 800 | .lo_after_scan = buf_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 801 | .lo_name = "buf", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 802 | }; |
| 803 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 804 | const struct gfs2_log_operations gfs2_revoke_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 805 | .lo_add = revoke_lo_add, |
| 806 | .lo_before_commit = revoke_lo_before_commit, |
| 807 | .lo_before_scan = revoke_lo_before_scan, |
| 808 | .lo_scan_elements = revoke_lo_scan_elements, |
| 809 | .lo_after_scan = revoke_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 810 | .lo_name = "revoke", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 811 | }; |
| 812 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 813 | const struct gfs2_log_operations gfs2_rg_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 814 | .lo_add = rg_lo_add, |
| 815 | .lo_after_commit = rg_lo_after_commit, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 816 | .lo_name = "rg", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 817 | }; |
| 818 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 819 | const struct gfs2_log_operations gfs2_databuf_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 820 | .lo_add = databuf_lo_add, |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 821 | .lo_incore_commit = buf_lo_incore_commit, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 822 | .lo_before_commit = databuf_lo_before_commit, |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 823 | .lo_after_commit = databuf_lo_after_commit, |
| 824 | .lo_scan_elements = databuf_lo_scan_elements, |
| 825 | .lo_after_scan = databuf_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 826 | .lo_name = "databuf", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 827 | }; |
| 828 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 829 | const struct gfs2_log_operations *gfs2_log_ops[] = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 830 | &gfs2_glock_lops, |
| 831 | &gfs2_buf_lops, |
| 832 | &gfs2_revoke_lops, |
| 833 | &gfs2_rg_lops, |
| 834 | &gfs2_databuf_lops, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 835 | NULL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 836 | }; |
| 837 | |