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 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 30 | /** |
| 31 | * gfs2_pin - Pin a buffer in memory |
| 32 | * @sdp: The superblock |
| 33 | * @bh: The buffer to be pinned |
| 34 | * |
| 35 | * The log lock must be held when calling this function |
| 36 | */ |
| 37 | static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) |
| 38 | { |
| 39 | struct gfs2_bufdata *bd; |
| 40 | |
| 41 | gfs2_assert_withdraw(sdp, test_bit(SDF_JOURNAL_LIVE, &sdp->sd_flags)); |
| 42 | |
| 43 | clear_buffer_dirty(bh); |
| 44 | if (test_set_buffer_pinned(bh)) |
| 45 | gfs2_assert_withdraw(sdp, 0); |
| 46 | if (!buffer_uptodate(bh)) |
| 47 | gfs2_io_error_bh(sdp, bh); |
| 48 | bd = bh->b_private; |
| 49 | /* If this buffer is in the AIL and it has already been written |
| 50 | * to in-place disk block, remove it from the AIL. |
| 51 | */ |
| 52 | if (bd->bd_ail) |
| 53 | list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list); |
| 54 | get_bh(bh); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * gfs2_unpin - Unpin a buffer |
| 59 | * @sdp: the filesystem the buffer belongs to |
| 60 | * @bh: The buffer to unpin |
| 61 | * @ai: |
| 62 | * |
| 63 | */ |
| 64 | |
| 65 | static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, |
| 66 | struct gfs2_ail *ai) |
| 67 | { |
| 68 | struct gfs2_bufdata *bd = bh->b_private; |
| 69 | |
| 70 | gfs2_assert_withdraw(sdp, buffer_uptodate(bh)); |
| 71 | |
| 72 | if (!buffer_pinned(bh)) |
| 73 | gfs2_assert_withdraw(sdp, 0); |
| 74 | |
| 75 | lock_buffer(bh); |
| 76 | mark_buffer_dirty(bh); |
| 77 | clear_buffer_pinned(bh); |
| 78 | |
| 79 | gfs2_log_lock(sdp); |
| 80 | if (bd->bd_ail) { |
| 81 | list_del(&bd->bd_ail_st_list); |
| 82 | brelse(bh); |
| 83 | } else { |
| 84 | struct gfs2_glock *gl = bd->bd_gl; |
| 85 | list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); |
| 86 | atomic_inc(&gl->gl_ail_count); |
| 87 | } |
| 88 | bd->bd_ail = ai; |
| 89 | list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list); |
| 90 | gfs2_log_unlock(sdp); |
| 91 | unlock_buffer(bh); |
| 92 | } |
| 93 | |
| 94 | static void __glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 95 | { |
| 96 | struct gfs2_glock *gl; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 97 | struct gfs2_trans *tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 98 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 99 | tr->tr_touched = 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 100 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 101 | gl = container_of(le, struct gfs2_glock, gl_le); |
| 102 | if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl))) |
| 103 | return; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 104 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 105 | if (!list_empty(&le->le_list)) |
Benjamin Marzinski | 6883562 | 2007-03-23 09:05:12 +0000 | [diff] [blame] | 106 | return; |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 107 | |
Benjamin Marzinski | 6883562 | 2007-03-23 09:05:12 +0000 | [diff] [blame] | 108 | gfs2_glock_hold(gl); |
| 109 | set_bit(GLF_DIRTY, &gl->gl_flags); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 110 | sdp->sd_log_num_gl++; |
| 111 | list_add(&le->le_list, &sdp->sd_log_le_gl); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 112 | } |
| 113 | |
| 114 | static void glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 115 | { |
| 116 | gfs2_log_lock(sdp); |
| 117 | __glock_lo_add(sdp, le); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 118 | gfs2_log_unlock(sdp); |
| 119 | } |
| 120 | |
| 121 | static void glock_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 122 | { |
| 123 | struct list_head *head = &sdp->sd_log_le_gl; |
| 124 | struct gfs2_glock *gl; |
| 125 | |
| 126 | while (!list_empty(head)) { |
| 127 | gl = list_entry(head->next, struct gfs2_glock, gl_le.le_list); |
| 128 | list_del_init(&gl->gl_le.le_list); |
| 129 | sdp->sd_log_num_gl--; |
| 130 | |
| 131 | gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl)); |
| 132 | gfs2_glock_put(gl); |
| 133 | } |
| 134 | gfs2_assert_warn(sdp, !sdp->sd_log_num_gl); |
| 135 | } |
| 136 | |
| 137 | static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 138 | { |
| 139 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
| 140 | struct gfs2_trans *tr; |
| 141 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 142 | lock_buffer(bd->bd_bh); |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 143 | gfs2_log_lock(sdp); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 144 | if (!list_empty(&bd->bd_list_tr)) |
| 145 | goto out; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 146 | tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 147 | tr->tr_touched = 1; |
| 148 | tr->tr_num_buf++; |
| 149 | list_add(&bd->bd_list_tr, &tr->tr_list_buf); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 150 | if (!list_empty(&le->le_list)) |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 151 | goto out; |
| 152 | __glock_lo_add(sdp, &bd->bd_gl->gl_le); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 153 | gfs2_meta_check(sdp, bd->bd_bh); |
Steven Whitehouse | a98ab22 | 2006-01-18 13:38:44 +0000 | [diff] [blame] | 154 | gfs2_pin(sdp, bd->bd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 155 | sdp->sd_log_num_buf++; |
| 156 | list_add(&le->le_list, &sdp->sd_log_le_buf); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 157 | tr->tr_num_buf_new++; |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 158 | out: |
| 159 | gfs2_log_unlock(sdp); |
| 160 | unlock_buffer(bd->bd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 161 | } |
| 162 | |
| 163 | static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) |
| 164 | { |
| 165 | struct list_head *head = &tr->tr_list_buf; |
| 166 | struct gfs2_bufdata *bd; |
| 167 | |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 168 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 169 | while (!list_empty(head)) { |
| 170 | bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr); |
| 171 | list_del_init(&bd->bd_list_tr); |
| 172 | tr->tr_num_buf--; |
| 173 | } |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 174 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 175 | gfs2_assert_warn(sdp, !tr->tr_num_buf); |
| 176 | } |
| 177 | |
| 178 | static void buf_lo_before_commit(struct gfs2_sbd *sdp) |
| 179 | { |
| 180 | struct buffer_head *bh; |
| 181 | struct gfs2_log_descriptor *ld; |
| 182 | struct gfs2_bufdata *bd1 = NULL, *bd2; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 183 | unsigned int total; |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 184 | unsigned int offset = BUF_OFFSET; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 185 | unsigned int limit; |
| 186 | unsigned int num; |
| 187 | unsigned n; |
| 188 | __be64 *ptr; |
| 189 | |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 190 | limit = buf_limit(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 191 | /* for 4k blocks, limit = 503 */ |
| 192 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 193 | gfs2_log_lock(sdp); |
| 194 | total = sdp->sd_log_num_buf; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 195 | bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); |
| 196 | while(total) { |
| 197 | num = total; |
| 198 | if (total > limit) |
| 199 | num = limit; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 200 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 201 | bh = gfs2_log_get_buf(sdp); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 202 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 203 | ld = (struct gfs2_log_descriptor *)bh->b_data; |
| 204 | ptr = (__be64 *)(bh->b_data + offset); |
| 205 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 206 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); |
| 207 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 208 | ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_METADATA); |
| 209 | ld->ld_length = cpu_to_be32(num + 1); |
| 210 | ld->ld_data1 = cpu_to_be32(num); |
| 211 | ld->ld_data2 = cpu_to_be32(0); |
| 212 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); |
| 213 | |
| 214 | n = 0; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 215 | list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, |
| 216 | bd_le.le_list) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 217 | *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); |
| 218 | if (++n >= num) |
| 219 | break; |
| 220 | } |
| 221 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 222 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 223 | set_buffer_dirty(bh); |
| 224 | ll_rw_block(WRITE, 1, &bh); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 225 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 226 | |
| 227 | n = 0; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 228 | list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, |
| 229 | bd_le.le_list) { |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 230 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 231 | bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); |
| 232 | set_buffer_dirty(bh); |
| 233 | ll_rw_block(WRITE, 1, &bh); |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 234 | gfs2_log_lock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 235 | if (++n >= num) |
| 236 | break; |
| 237 | } |
| 238 | |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 239 | BUG_ON(total < num); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 240 | total -= num; |
| 241 | } |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 242 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 243 | } |
| 244 | |
| 245 | static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 246 | { |
| 247 | struct list_head *head = &sdp->sd_log_le_buf; |
| 248 | struct gfs2_bufdata *bd; |
| 249 | |
| 250 | while (!list_empty(head)) { |
| 251 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); |
| 252 | list_del_init(&bd->bd_le.le_list); |
| 253 | sdp->sd_log_num_buf--; |
| 254 | |
Steven Whitehouse | a98ab22 | 2006-01-18 13:38:44 +0000 | [diff] [blame] | 255 | gfs2_unpin(sdp, bd->bd_bh, ai); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 256 | } |
| 257 | gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); |
| 258 | } |
| 259 | |
| 260 | static void buf_lo_before_scan(struct gfs2_jdesc *jd, |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 261 | struct gfs2_log_header_host *head, int pass) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 262 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 263 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 264 | |
| 265 | if (pass != 0) |
| 266 | return; |
| 267 | |
| 268 | sdp->sd_found_blocks = 0; |
| 269 | sdp->sd_replayed_blocks = 0; |
| 270 | } |
| 271 | |
| 272 | static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 273 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
| 274 | int pass) |
| 275 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 276 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 277 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 278 | struct gfs2_glock *gl = ip->i_gl; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 279 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
| 280 | struct buffer_head *bh_log, *bh_ip; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 281 | u64 blkno; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 282 | int error = 0; |
| 283 | |
| 284 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) |
| 285 | return 0; |
| 286 | |
| 287 | gfs2_replay_incr_blk(sdp, &start); |
| 288 | |
| 289 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 290 | blkno = be64_to_cpu(*ptr++); |
| 291 | |
| 292 | sdp->sd_found_blocks++; |
| 293 | |
| 294 | if (gfs2_revoke_check(sdp, blkno, start)) |
| 295 | continue; |
| 296 | |
| 297 | error = gfs2_replay_read_block(jd, start, &bh_log); |
Steven Whitehouse | 82ffa51 | 2006-09-04 14:47:06 -0400 | [diff] [blame] | 298 | if (error) |
| 299 | return error; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 300 | |
| 301 | bh_ip = gfs2_meta_new(gl, blkno); |
| 302 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); |
| 303 | |
| 304 | if (gfs2_meta_check(sdp, bh_ip)) |
| 305 | error = -EIO; |
| 306 | else |
| 307 | mark_buffer_dirty(bh_ip); |
| 308 | |
| 309 | brelse(bh_log); |
| 310 | brelse(bh_ip); |
| 311 | |
| 312 | if (error) |
| 313 | break; |
| 314 | |
| 315 | sdp->sd_replayed_blocks++; |
| 316 | } |
| 317 | |
| 318 | return error; |
| 319 | } |
| 320 | |
| 321 | static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 322 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 323 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 324 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 325 | |
| 326 | if (error) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 327 | gfs2_meta_sync(ip->i_gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 328 | return; |
| 329 | } |
| 330 | if (pass != 1) |
| 331 | return; |
| 332 | |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 333 | gfs2_meta_sync(ip->i_gl); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 334 | |
| 335 | fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", |
| 336 | jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); |
| 337 | } |
| 338 | |
| 339 | static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 340 | { |
| 341 | struct gfs2_trans *tr; |
| 342 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 343 | tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 344 | tr->tr_touched = 1; |
| 345 | tr->tr_num_revoke++; |
| 346 | |
| 347 | gfs2_log_lock(sdp); |
| 348 | sdp->sd_log_num_revoke++; |
| 349 | list_add(&le->le_list, &sdp->sd_log_le_revoke); |
| 350 | gfs2_log_unlock(sdp); |
| 351 | } |
| 352 | |
| 353 | static void revoke_lo_before_commit(struct gfs2_sbd *sdp) |
| 354 | { |
| 355 | struct gfs2_log_descriptor *ld; |
| 356 | struct gfs2_meta_header *mh; |
| 357 | struct buffer_head *bh; |
| 358 | unsigned int offset; |
| 359 | struct list_head *head = &sdp->sd_log_le_revoke; |
| 360 | struct gfs2_revoke *rv; |
| 361 | |
| 362 | if (!sdp->sd_log_num_revoke) |
| 363 | return; |
| 364 | |
| 365 | bh = gfs2_log_get_buf(sdp); |
| 366 | ld = (struct gfs2_log_descriptor *)bh->b_data; |
| 367 | ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 368 | ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); |
| 369 | ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 370 | ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_REVOKE); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 371 | 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] | 372 | sizeof(u64))); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 373 | ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); |
| 374 | ld->ld_data2 = cpu_to_be32(0); |
| 375 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); |
| 376 | offset = sizeof(struct gfs2_log_descriptor); |
| 377 | |
| 378 | while (!list_empty(head)) { |
| 379 | rv = list_entry(head->next, struct gfs2_revoke, rv_le.le_list); |
Steven Whitehouse | 13538b8 | 2006-02-22 11:15:03 +0000 | [diff] [blame] | 380 | list_del_init(&rv->rv_le.le_list); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 381 | sdp->sd_log_num_revoke--; |
| 382 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 383 | if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 384 | set_buffer_dirty(bh); |
| 385 | ll_rw_block(WRITE, 1, &bh); |
| 386 | |
| 387 | bh = gfs2_log_get_buf(sdp); |
| 388 | mh = (struct gfs2_meta_header *)bh->b_data; |
| 389 | mh->mh_magic = cpu_to_be32(GFS2_MAGIC); |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 390 | mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); |
| 391 | mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 392 | offset = sizeof(struct gfs2_meta_header); |
| 393 | } |
| 394 | |
| 395 | *(__be64 *)(bh->b_data + offset) = cpu_to_be64(rv->rv_blkno); |
| 396 | kfree(rv); |
| 397 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 398 | offset += sizeof(u64); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 399 | } |
| 400 | gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); |
| 401 | |
| 402 | set_buffer_dirty(bh); |
| 403 | ll_rw_block(WRITE, 1, &bh); |
| 404 | } |
| 405 | |
| 406 | static void revoke_lo_before_scan(struct gfs2_jdesc *jd, |
Al Viro | 5516762 | 2006-10-13 21:47:13 -0400 | [diff] [blame] | 407 | struct gfs2_log_header_host *head, int pass) |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 408 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 409 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 410 | |
| 411 | if (pass != 0) |
| 412 | return; |
| 413 | |
| 414 | sdp->sd_found_revokes = 0; |
| 415 | sdp->sd_replay_tail = head->lh_tail; |
| 416 | } |
| 417 | |
| 418 | static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 419 | struct gfs2_log_descriptor *ld, __be64 *ptr, |
| 420 | int pass) |
| 421 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 422 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 423 | unsigned int blks = be32_to_cpu(ld->ld_length); |
| 424 | unsigned int revokes = be32_to_cpu(ld->ld_data1); |
| 425 | struct buffer_head *bh; |
| 426 | unsigned int offset; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 427 | u64 blkno; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 428 | int first = 1; |
| 429 | int error; |
| 430 | |
| 431 | if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) |
| 432 | return 0; |
| 433 | |
| 434 | offset = sizeof(struct gfs2_log_descriptor); |
| 435 | |
| 436 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 437 | error = gfs2_replay_read_block(jd, start, &bh); |
| 438 | if (error) |
| 439 | return error; |
| 440 | |
| 441 | if (!first) |
| 442 | gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); |
| 443 | |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 444 | while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 445 | blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); |
| 446 | |
| 447 | error = gfs2_revoke_add(sdp, blkno, start); |
| 448 | if (error < 0) |
| 449 | return error; |
| 450 | else if (error) |
| 451 | sdp->sd_found_revokes++; |
| 452 | |
| 453 | if (!--revokes) |
| 454 | break; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 455 | offset += sizeof(u64); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 456 | } |
| 457 | |
| 458 | brelse(bh); |
| 459 | offset = sizeof(struct gfs2_meta_header); |
| 460 | first = 0; |
| 461 | } |
| 462 | |
| 463 | return 0; |
| 464 | } |
| 465 | |
| 466 | static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 467 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 468 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 469 | |
| 470 | if (error) { |
| 471 | gfs2_revoke_clean(sdp); |
| 472 | return; |
| 473 | } |
| 474 | if (pass != 1) |
| 475 | return; |
| 476 | |
| 477 | fs_info(sdp, "jid=%u: Found %u revoke tags\n", |
| 478 | jd->jd_jid, sdp->sd_found_revokes); |
| 479 | |
| 480 | gfs2_revoke_clean(sdp); |
| 481 | } |
| 482 | |
| 483 | static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 484 | { |
| 485 | struct gfs2_rgrpd *rgd; |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 486 | struct gfs2_trans *tr = current->journal_info; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 487 | |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 488 | tr->tr_touched = 1; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 489 | |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 490 | rgd = container_of(le, struct gfs2_rgrpd, rd_le); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 491 | |
| 492 | gfs2_log_lock(sdp); |
Benjamin Marzinski | 6883562 | 2007-03-23 09:05:12 +0000 | [diff] [blame] | 493 | if (!list_empty(&le->le_list)){ |
| 494 | gfs2_log_unlock(sdp); |
| 495 | return; |
| 496 | } |
| 497 | gfs2_rgrp_bh_hold(rgd); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 498 | sdp->sd_log_num_rg++; |
| 499 | list_add(&le->le_list, &sdp->sd_log_le_rg); |
Steven Whitehouse | 907b9bc | 2006-09-25 09:26:04 -0400 | [diff] [blame] | 500 | gfs2_log_unlock(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 501 | } |
| 502 | |
| 503 | static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 504 | { |
| 505 | struct list_head *head = &sdp->sd_log_le_rg; |
| 506 | struct gfs2_rgrpd *rgd; |
| 507 | |
| 508 | while (!list_empty(head)) { |
| 509 | rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list); |
| 510 | list_del_init(&rgd->rd_le.le_list); |
| 511 | sdp->sd_log_num_rg--; |
| 512 | |
| 513 | gfs2_rgrp_repolish_clones(rgd); |
| 514 | gfs2_rgrp_bh_put(rgd); |
| 515 | } |
| 516 | gfs2_assert_warn(sdp, !sdp->sd_log_num_rg); |
| 517 | } |
| 518 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 519 | /** |
| 520 | * databuf_lo_add - Add a databuf to the transaction. |
| 521 | * |
| 522 | * This is used in two distinct cases: |
| 523 | * i) In ordered write mode |
| 524 | * We put the data buffer on a list so that we can ensure that its |
| 525 | * synced to disk at the right time |
| 526 | * ii) In journaled data mode |
| 527 | * We need to journal the data block in the same way as metadata in |
| 528 | * the functions above. The difference is that here we have a tag |
| 529 | * which is two __be64's being the block number (as per meta data) |
| 530 | * and a flag which says whether the data block needs escaping or |
| 531 | * not. This means we need a new log entry for each 251 or so data |
| 532 | * blocks, which isn't an enormous overhead but twice as much as |
| 533 | * for normal metadata blocks. |
| 534 | */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 535 | static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) |
| 536 | { |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 537 | struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 538 | struct gfs2_trans *tr = current->journal_info; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 539 | struct address_space *mapping = bd->bd_bh->b_page->mapping; |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 540 | struct gfs2_inode *ip = GFS2_I(mapping->host); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 541 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 542 | lock_buffer(bd->bd_bh); |
Steven Whitehouse | 8bd9572 | 2007-01-25 10:04:20 +0000 | [diff] [blame] | 543 | gfs2_log_lock(sdp); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 544 | if (!list_empty(&bd->bd_list_tr)) |
| 545 | goto out; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 546 | tr->tr_touched = 1; |
Robert Peterson | 773ed1a | 2007-06-20 08:34:06 -0500 | [diff] [blame] | 547 | if (gfs2_is_jdata(ip)) { |
| 548 | tr->tr_num_buf++; |
| 549 | list_add(&bd->bd_list_tr, &tr->tr_list_buf); |
| 550 | } |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 551 | if (!list_empty(&le->le_list)) |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 552 | goto out; |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 553 | |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 554 | __glock_lo_add(sdp, &bd->bd_gl->gl_le); |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 555 | if (gfs2_is_jdata(ip)) { |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 556 | gfs2_pin(sdp, bd->bd_bh); |
| 557 | tr->tr_num_databuf_new++; |
Bob Peterson | ec217e0 | 2007-08-22 11:15:29 -0500 | [diff] [blame] | 558 | sdp->sd_log_num_jdata++; |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 559 | } |
Bob Peterson | bdcb885 | 2007-07-11 15:55:23 -0500 | [diff] [blame] | 560 | sdp->sd_log_num_databuf++; |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 561 | list_add(&le->le_list, &sdp->sd_log_le_databuf); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 562 | out: |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 563 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 9b9107a | 2007-08-27 13:54:05 +0100 | [diff] [blame^] | 564 | unlock_buffer(bd->bd_bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 565 | } |
| 566 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 567 | static int gfs2_check_magic(struct buffer_head *bh) |
| 568 | { |
| 569 | struct page *page = bh->b_page; |
| 570 | void *kaddr; |
| 571 | __be32 *ptr; |
| 572 | int rv = 0; |
| 573 | |
| 574 | kaddr = kmap_atomic(page, KM_USER0); |
| 575 | ptr = kaddr + bh_offset(bh); |
| 576 | if (*ptr == cpu_to_be32(GFS2_MAGIC)) |
| 577 | rv = 1; |
Russell Cattelan | c312c4f | 2006-10-12 09:23:41 -0400 | [diff] [blame] | 578 | kunmap_atomic(kaddr, KM_USER0); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 579 | |
| 580 | return rv; |
| 581 | } |
| 582 | |
| 583 | /** |
| 584 | * databuf_lo_before_commit - Scan the data buffers, writing as we go |
| 585 | * |
| 586 | * Here we scan through the lists of buffers and make the assumption |
| 587 | * that any buffer thats been pinned is being journaled, and that |
| 588 | * any unpinned buffer is an ordered write data buffer and therefore |
| 589 | * will be written back rather than journaled. |
| 590 | */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 591 | static void databuf_lo_before_commit(struct gfs2_sbd *sdp) |
| 592 | { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 593 | LIST_HEAD(started); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 594 | struct gfs2_bufdata *bd1 = NULL, *bd2, *bdt; |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 595 | struct buffer_head *bh = NULL,*bh1 = NULL; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 596 | struct gfs2_log_descriptor *ld; |
| 597 | unsigned int limit; |
Bob Peterson | bdcb885 | 2007-07-11 15:55:23 -0500 | [diff] [blame] | 598 | unsigned int total_dbuf; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 599 | unsigned int total_jdata; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 600 | unsigned int num, n; |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 601 | __be64 *ptr = NULL; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 602 | |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 603 | limit = databuf_limit(sdp); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 604 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 605 | /* |
| 606 | * Start writing ordered buffers, write journaled buffers |
| 607 | * into the log along with a header |
| 608 | */ |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 609 | gfs2_log_lock(sdp); |
Bob Peterson | bdcb885 | 2007-07-11 15:55:23 -0500 | [diff] [blame] | 610 | total_dbuf = sdp->sd_log_num_databuf; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 611 | total_jdata = sdp->sd_log_num_jdata; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 612 | bd2 = bd1 = list_prepare_entry(bd1, &sdp->sd_log_le_databuf, |
| 613 | bd_le.le_list); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 614 | while(total_dbuf) { |
| 615 | num = total_jdata; |
| 616 | if (num > limit) |
| 617 | num = limit; |
| 618 | n = 0; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 619 | list_for_each_entry_safe_continue(bd1, bdt, |
| 620 | &sdp->sd_log_le_databuf, |
| 621 | bd_le.le_list) { |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 622 | /* store off the buffer head in a local ptr since |
| 623 | * gfs2_bufdata might change when we drop the log lock |
| 624 | */ |
| 625 | bh1 = bd1->bd_bh; |
| 626 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 627 | /* An ordered write buffer */ |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 628 | if (bh1 && !buffer_pinned(bh1)) { |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 629 | list_move(&bd1->bd_le.le_list, &started); |
| 630 | if (bd1 == bd2) { |
| 631 | bd2 = NULL; |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 632 | bd2 = list_prepare_entry(bd2, |
| 633 | &sdp->sd_log_le_databuf, |
| 634 | bd_le.le_list); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 635 | } |
| 636 | total_dbuf--; |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 637 | if (bh1) { |
| 638 | if (buffer_dirty(bh1)) { |
| 639 | get_bh(bh1); |
| 640 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 641 | gfs2_log_unlock(sdp); |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 642 | |
| 643 | ll_rw_block(SWRITE, 1, &bh1); |
| 644 | brelse(bh1); |
| 645 | |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 646 | gfs2_log_lock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 647 | } |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 648 | continue; |
| 649 | } |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 650 | continue; |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 651 | } else if (bh1) { /* A journaled buffer */ |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 652 | int magic; |
| 653 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 654 | if (!bh) { |
| 655 | bh = gfs2_log_get_buf(sdp); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 656 | ld = (struct gfs2_log_descriptor *) |
| 657 | bh->b_data; |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 658 | ptr = (__be64 *)(bh->b_data + |
| 659 | DATABUF_OFFSET); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 660 | ld->ld_header.mh_magic = |
| 661 | cpu_to_be32(GFS2_MAGIC); |
| 662 | ld->ld_header.mh_type = |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 663 | cpu_to_be32(GFS2_METATYPE_LD); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 664 | ld->ld_header.mh_format = |
Steven Whitehouse | e3167de | 2006-03-30 15:46:23 -0500 | [diff] [blame] | 665 | cpu_to_be32(GFS2_FORMAT_LD); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 666 | ld->ld_type = |
| 667 | cpu_to_be32(GFS2_LOG_DESC_JDATA); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 668 | ld->ld_length = cpu_to_be32(num + 1); |
| 669 | ld->ld_data1 = cpu_to_be32(num); |
| 670 | ld->ld_data2 = cpu_to_be32(0); |
| 671 | memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); |
| 672 | } |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 673 | magic = gfs2_check_magic(bh1); |
| 674 | *ptr++ = cpu_to_be64(bh1->b_blocknr); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 675 | *ptr++ = cpu_to_be64((__u64)magic); |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 676 | clear_buffer_escaped(bh1); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 677 | if (unlikely(magic != 0)) |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 678 | set_buffer_escaped(bh1); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 679 | gfs2_log_lock(sdp); |
Robert Peterson | 2332c44 | 2007-06-18 14:50:20 -0500 | [diff] [blame] | 680 | if (++n >= num) |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 681 | break; |
Russell Cattelan | 7020933 | 2006-11-09 11:28:08 -0500 | [diff] [blame] | 682 | } else if (!bh1) { |
Steven Whitehouse | 623d935 | 2006-08-31 12:14:44 -0400 | [diff] [blame] | 683 | total_dbuf--; |
| 684 | sdp->sd_log_num_databuf--; |
| 685 | list_del_init(&bd1->bd_le.le_list); |
| 686 | if (bd1 == bd2) { |
| 687 | bd2 = NULL; |
| 688 | bd2 = list_prepare_entry(bd2, |
| 689 | &sdp->sd_log_le_databuf, |
| 690 | bd_le.le_list); |
| 691 | } |
| 692 | kmem_cache_free(gfs2_bufdata_cachep, bd1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 693 | } |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 694 | } |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 695 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 696 | if (bh) { |
| 697 | set_buffer_dirty(bh); |
| 698 | ll_rw_block(WRITE, 1, &bh); |
| 699 | bh = NULL; |
Bob Peterson | 905d2ae | 2007-07-24 14:05:31 -0500 | [diff] [blame] | 700 | ptr = NULL; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 701 | } |
| 702 | n = 0; |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 703 | gfs2_log_lock(sdp); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 704 | list_for_each_entry_continue(bd2, &sdp->sd_log_le_databuf, |
| 705 | bd_le.le_list) { |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 706 | if (!bd2->bd_bh) |
| 707 | continue; |
| 708 | /* copy buffer if it needs escaping */ |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 709 | gfs2_log_unlock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 710 | if (unlikely(buffer_escaped(bd2->bd_bh))) { |
| 711 | void *kaddr; |
| 712 | struct page *page = bd2->bd_bh->b_page; |
| 713 | bh = gfs2_log_get_buf(sdp); |
| 714 | kaddr = kmap_atomic(page, KM_USER0); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 715 | memcpy(bh->b_data, |
| 716 | kaddr + bh_offset(bd2->bd_bh), |
| 717 | sdp->sd_sb.sb_bsize); |
Russell Cattelan | c312c4f | 2006-10-12 09:23:41 -0400 | [diff] [blame] | 718 | kunmap_atomic(kaddr, KM_USER0); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 719 | *(__be32 *)bh->b_data = 0; |
| 720 | } else { |
| 721 | bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); |
| 722 | } |
| 723 | set_buffer_dirty(bh); |
| 724 | ll_rw_block(WRITE, 1, &bh); |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 725 | gfs2_log_lock(sdp); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 726 | if (++n >= num) |
| 727 | break; |
| 728 | } |
| 729 | bh = NULL; |
Bob Peterson | bdcb885 | 2007-07-11 15:55:23 -0500 | [diff] [blame] | 730 | BUG_ON(total_dbuf < num); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 731 | total_dbuf -= num; |
| 732 | total_jdata -= num; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 733 | } |
Steven Whitehouse | f55ab26 | 2006-02-21 12:51:39 +0000 | [diff] [blame] | 734 | gfs2_log_unlock(sdp); |
| 735 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 736 | /* Wait on all ordered buffers */ |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 737 | while (!list_empty(&started)) { |
Steven Whitehouse | 13538b8 | 2006-02-22 11:15:03 +0000 | [diff] [blame] | 738 | gfs2_log_lock(sdp); |
Steven Whitehouse | 568f4c9 | 2006-02-27 12:00:42 -0500 | [diff] [blame] | 739 | bd1 = list_entry(started.next, struct gfs2_bufdata, |
| 740 | bd_le.le_list); |
Steven Whitehouse | 0886760 | 2006-08-22 11:03:57 -0400 | [diff] [blame] | 741 | list_del_init(&bd1->bd_le.le_list); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 742 | sdp->sd_log_num_databuf--; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 743 | bh = bd1->bd_bh; |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 744 | if (bh) { |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 745 | bh->b_private = NULL; |
Steven Whitehouse | 15d00c0 | 2006-08-18 15:51:09 -0400 | [diff] [blame] | 746 | get_bh(bh); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 747 | gfs2_log_unlock(sdp); |
| 748 | wait_on_buffer(bh); |
| 749 | brelse(bh); |
| 750 | } else |
| 751 | gfs2_log_unlock(sdp); |
| 752 | |
Steven Whitehouse | 3a8476d | 2006-06-19 09:10:39 -0400 | [diff] [blame] | 753 | kmem_cache_free(gfs2_bufdata_cachep, bd1); |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 754 | } |
| 755 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 756 | /* We've removed all the ordered write bufs here, so only jdata left */ |
| 757 | 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] | 758 | } |
| 759 | |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 760 | static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, |
| 761 | struct gfs2_log_descriptor *ld, |
| 762 | __be64 *ptr, int pass) |
| 763 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 764 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 765 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 5c676f6 | 2006-02-27 17:23:27 -0500 | [diff] [blame] | 766 | struct gfs2_glock *gl = ip->i_gl; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 767 | unsigned int blks = be32_to_cpu(ld->ld_data1); |
| 768 | struct buffer_head *bh_log, *bh_ip; |
Steven Whitehouse | cd91549 | 2006-09-04 12:49:07 -0400 | [diff] [blame] | 769 | u64 blkno; |
| 770 | u64 esc; |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 771 | int error = 0; |
| 772 | |
| 773 | if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) |
| 774 | return 0; |
| 775 | |
| 776 | gfs2_replay_incr_blk(sdp, &start); |
| 777 | for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { |
| 778 | blkno = be64_to_cpu(*ptr++); |
| 779 | esc = be64_to_cpu(*ptr++); |
| 780 | |
| 781 | sdp->sd_found_blocks++; |
| 782 | |
| 783 | if (gfs2_revoke_check(sdp, blkno, start)) |
| 784 | continue; |
| 785 | |
| 786 | error = gfs2_replay_read_block(jd, start, &bh_log); |
| 787 | if (error) |
| 788 | return error; |
| 789 | |
| 790 | bh_ip = gfs2_meta_new(gl, blkno); |
| 791 | memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); |
| 792 | |
| 793 | /* Unescape */ |
| 794 | if (esc) { |
| 795 | __be32 *eptr = (__be32 *)bh_ip->b_data; |
| 796 | *eptr = cpu_to_be32(GFS2_MAGIC); |
| 797 | } |
| 798 | mark_buffer_dirty(bh_ip); |
| 799 | |
| 800 | brelse(bh_log); |
| 801 | brelse(bh_ip); |
| 802 | if (error) |
| 803 | break; |
| 804 | |
| 805 | sdp->sd_replayed_blocks++; |
| 806 | } |
| 807 | |
| 808 | return error; |
| 809 | } |
| 810 | |
| 811 | /* FIXME: sort out accounting for log blocks etc. */ |
| 812 | |
| 813 | static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) |
| 814 | { |
Steven Whitehouse | feaa7bb | 2006-06-14 15:32:57 -0400 | [diff] [blame] | 815 | struct gfs2_inode *ip = GFS2_I(jd->jd_inode); |
| 816 | struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 817 | |
| 818 | if (error) { |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 819 | gfs2_meta_sync(ip->i_gl); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 820 | return; |
| 821 | } |
| 822 | if (pass != 1) |
| 823 | return; |
| 824 | |
| 825 | /* data sync? */ |
Steven Whitehouse | 7276b3b | 2006-09-21 17:05:23 -0400 | [diff] [blame] | 826 | gfs2_meta_sync(ip->i_gl); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 827 | |
| 828 | fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", |
| 829 | jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); |
| 830 | } |
| 831 | |
| 832 | static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) |
| 833 | { |
| 834 | struct list_head *head = &sdp->sd_log_le_databuf; |
| 835 | struct gfs2_bufdata *bd; |
| 836 | |
| 837 | while (!list_empty(head)) { |
| 838 | bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); |
Steven Whitehouse | b8e1aab | 2006-08-22 16:25:50 -0400 | [diff] [blame] | 839 | list_del_init(&bd->bd_le.le_list); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 840 | sdp->sd_log_num_databuf--; |
| 841 | sdp->sd_log_num_jdata--; |
| 842 | gfs2_unpin(sdp, bd->bd_bh, ai); |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 843 | } |
| 844 | gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); |
| 845 | gfs2_assert_warn(sdp, !sdp->sd_log_num_jdata); |
| 846 | } |
| 847 | |
| 848 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 849 | const struct gfs2_log_operations gfs2_glock_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 850 | .lo_add = glock_lo_add, |
| 851 | .lo_after_commit = glock_lo_after_commit, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 852 | .lo_name = "glock", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 853 | }; |
| 854 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 855 | const struct gfs2_log_operations gfs2_buf_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 856 | .lo_add = buf_lo_add, |
| 857 | .lo_incore_commit = buf_lo_incore_commit, |
| 858 | .lo_before_commit = buf_lo_before_commit, |
| 859 | .lo_after_commit = buf_lo_after_commit, |
| 860 | .lo_before_scan = buf_lo_before_scan, |
| 861 | .lo_scan_elements = buf_lo_scan_elements, |
| 862 | .lo_after_scan = buf_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 863 | .lo_name = "buf", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 864 | }; |
| 865 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 866 | const struct gfs2_log_operations gfs2_revoke_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 867 | .lo_add = revoke_lo_add, |
| 868 | .lo_before_commit = revoke_lo_before_commit, |
| 869 | .lo_before_scan = revoke_lo_before_scan, |
| 870 | .lo_scan_elements = revoke_lo_scan_elements, |
| 871 | .lo_after_scan = revoke_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 872 | .lo_name = "revoke", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 873 | }; |
| 874 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 875 | const struct gfs2_log_operations gfs2_rg_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 876 | .lo_add = rg_lo_add, |
| 877 | .lo_after_commit = rg_lo_after_commit, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 878 | .lo_name = "rg", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 879 | }; |
| 880 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 881 | const struct gfs2_log_operations gfs2_databuf_lops = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 882 | .lo_add = databuf_lo_add, |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 883 | .lo_incore_commit = buf_lo_incore_commit, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 884 | .lo_before_commit = databuf_lo_before_commit, |
Steven Whitehouse | 18ec7d5 | 2006-02-08 11:50:51 +0000 | [diff] [blame] | 885 | .lo_after_commit = databuf_lo_after_commit, |
| 886 | .lo_scan_elements = databuf_lo_scan_elements, |
| 887 | .lo_after_scan = databuf_lo_after_scan, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 888 | .lo_name = "databuf", |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 889 | }; |
| 890 | |
Steven Whitehouse | b09e593 | 2006-04-07 11:17:32 -0400 | [diff] [blame] | 891 | const struct gfs2_log_operations *gfs2_log_ops[] = { |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 892 | &gfs2_glock_lops, |
| 893 | &gfs2_buf_lops, |
| 894 | &gfs2_revoke_lops, |
| 895 | &gfs2_rg_lops, |
| 896 | &gfs2_databuf_lops, |
Steven Whitehouse | ea67eed | 2006-09-05 10:53:09 -0400 | [diff] [blame] | 897 | NULL, |
David Teigland | b3b94fa | 2006-01-16 16:50:04 +0000 | [diff] [blame] | 898 | }; |
| 899 | |