1b3b94faaSDavid Teigland /* 2b3b94faaSDavid Teigland * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 33a8a9a10SSteven Whitehouse * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. 4b3b94faaSDavid Teigland * 5b3b94faaSDavid Teigland * This copyrighted material is made available to anyone wishing to use, 6b3b94faaSDavid Teigland * modify, copy, or redistribute it subject to the terms and conditions 7e9fc2aa0SSteven Whitehouse * of the GNU General Public License version 2. 8b3b94faaSDavid Teigland */ 9b3b94faaSDavid Teigland 10b3b94faaSDavid Teigland #include <linux/sched.h> 11b3b94faaSDavid Teigland #include <linux/slab.h> 12b3b94faaSDavid Teigland #include <linux/spinlock.h> 13b3b94faaSDavid Teigland #include <linux/completion.h> 14b3b94faaSDavid Teigland #include <linux/buffer_head.h> 155c676f6dSSteven Whitehouse #include <linux/gfs2_ondisk.h> 167d308590SFabio Massimo Di Nitto #include <linux/lm_interface.h> 17b3b94faaSDavid Teigland 18b3b94faaSDavid Teigland #include "gfs2.h" 195c676f6dSSteven Whitehouse #include "incore.h" 202332c443SRobert Peterson #include "inode.h" 21b3b94faaSDavid Teigland #include "glock.h" 22b3b94faaSDavid Teigland #include "log.h" 23b3b94faaSDavid Teigland #include "lops.h" 24b3b94faaSDavid Teigland #include "meta_io.h" 25b3b94faaSDavid Teigland #include "recovery.h" 26b3b94faaSDavid Teigland #include "rgrp.h" 27b3b94faaSDavid Teigland #include "trans.h" 285c676f6dSSteven Whitehouse #include "util.h" 29b3b94faaSDavid Teigland 30b3b94faaSDavid Teigland static void glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 31b3b94faaSDavid Teigland { 32b3b94faaSDavid Teigland struct gfs2_glock *gl; 335c676f6dSSteven Whitehouse struct gfs2_trans *tr = current->journal_info; 34b3b94faaSDavid Teigland 355c676f6dSSteven Whitehouse tr->tr_touched = 1; 36b3b94faaSDavid Teigland 37b3b94faaSDavid Teigland gl = container_of(le, struct gfs2_glock, gl_le); 38b3b94faaSDavid Teigland if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl))) 39b3b94faaSDavid Teigland return; 40b3b94faaSDavid Teigland 41b3b94faaSDavid Teigland gfs2_log_lock(sdp); 4268835625SBenjamin Marzinski if (!list_empty(&le->le_list)){ 4368835625SBenjamin Marzinski gfs2_log_unlock(sdp); 4468835625SBenjamin Marzinski return; 4568835625SBenjamin Marzinski } 4668835625SBenjamin Marzinski gfs2_glock_hold(gl); 4768835625SBenjamin Marzinski set_bit(GLF_DIRTY, &gl->gl_flags); 48b3b94faaSDavid Teigland sdp->sd_log_num_gl++; 49b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_gl); 50b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 51b3b94faaSDavid Teigland } 52b3b94faaSDavid Teigland 53b3b94faaSDavid Teigland static void glock_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 54b3b94faaSDavid Teigland { 55b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_gl; 56b3b94faaSDavid Teigland struct gfs2_glock *gl; 57b3b94faaSDavid Teigland 58b3b94faaSDavid Teigland while (!list_empty(head)) { 59b3b94faaSDavid Teigland gl = list_entry(head->next, struct gfs2_glock, gl_le.le_list); 60b3b94faaSDavid Teigland list_del_init(&gl->gl_le.le_list); 61b3b94faaSDavid Teigland sdp->sd_log_num_gl--; 62b3b94faaSDavid Teigland 63b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl)); 64b3b94faaSDavid Teigland gfs2_glock_put(gl); 65b3b94faaSDavid Teigland } 66b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_gl); 67b3b94faaSDavid Teigland } 68b3b94faaSDavid Teigland 69b3b94faaSDavid Teigland static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 70b3b94faaSDavid Teigland { 71b3b94faaSDavid Teigland struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 72b3b94faaSDavid Teigland struct gfs2_trans *tr; 73b3b94faaSDavid Teigland 748bd95727SSteven Whitehouse gfs2_log_lock(sdp); 758bd95727SSteven Whitehouse if (!list_empty(&bd->bd_list_tr)) { 768bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 77b3b94faaSDavid Teigland return; 788bd95727SSteven Whitehouse } 795c676f6dSSteven Whitehouse tr = current->journal_info; 80b3b94faaSDavid Teigland tr->tr_touched = 1; 81b3b94faaSDavid Teigland tr->tr_num_buf++; 82b3b94faaSDavid Teigland list_add(&bd->bd_list_tr, &tr->tr_list_buf); 838bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 84b3b94faaSDavid Teigland 85b3b94faaSDavid Teigland if (!list_empty(&le->le_list)) 86b3b94faaSDavid Teigland return; 87b3b94faaSDavid Teigland 88b3b94faaSDavid Teigland gfs2_trans_add_gl(bd->bd_gl); 89b3b94faaSDavid Teigland 90b3b94faaSDavid Teigland gfs2_meta_check(sdp, bd->bd_bh); 91a98ab220SSteven Whitehouse gfs2_pin(sdp, bd->bd_bh); 92b3b94faaSDavid Teigland gfs2_log_lock(sdp); 93b3b94faaSDavid Teigland sdp->sd_log_num_buf++; 94b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_buf); 95b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 96b3b94faaSDavid Teigland 97b3b94faaSDavid Teigland tr->tr_num_buf_new++; 98b3b94faaSDavid Teigland } 99b3b94faaSDavid Teigland 100b3b94faaSDavid Teigland static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 101b3b94faaSDavid Teigland { 102b3b94faaSDavid Teigland struct list_head *head = &tr->tr_list_buf; 103b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 104b3b94faaSDavid Teigland 1058bd95727SSteven Whitehouse gfs2_log_lock(sdp); 106b3b94faaSDavid Teigland while (!list_empty(head)) { 107b3b94faaSDavid Teigland bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr); 108b3b94faaSDavid Teigland list_del_init(&bd->bd_list_tr); 109b3b94faaSDavid Teigland tr->tr_num_buf--; 110b3b94faaSDavid Teigland } 1118bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 112b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !tr->tr_num_buf); 113b3b94faaSDavid Teigland } 114b3b94faaSDavid Teigland 115b3b94faaSDavid Teigland static void buf_lo_before_commit(struct gfs2_sbd *sdp) 116b3b94faaSDavid Teigland { 117b3b94faaSDavid Teigland struct buffer_head *bh; 118b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 119b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 120905d2aefSBob Peterson unsigned int total; 1212332c443SRobert Peterson unsigned int offset = BUF_OFFSET; 122b3b94faaSDavid Teigland unsigned int limit; 123b3b94faaSDavid Teigland unsigned int num; 124b3b94faaSDavid Teigland unsigned n; 125b3b94faaSDavid Teigland __be64 *ptr; 126b3b94faaSDavid Teigland 1272332c443SRobert Peterson limit = buf_limit(sdp); 128b3b94faaSDavid Teigland /* for 4k blocks, limit = 503 */ 129b3b94faaSDavid Teigland 130905d2aefSBob Peterson gfs2_log_lock(sdp); 131905d2aefSBob Peterson total = sdp->sd_log_num_buf; 132b3b94faaSDavid Teigland bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); 133b3b94faaSDavid Teigland while(total) { 134b3b94faaSDavid Teigland num = total; 135b3b94faaSDavid Teigland if (total > limit) 136b3b94faaSDavid Teigland num = limit; 137905d2aefSBob Peterson gfs2_log_unlock(sdp); 138b3b94faaSDavid Teigland bh = gfs2_log_get_buf(sdp); 139905d2aefSBob Peterson gfs2_log_lock(sdp); 140b3b94faaSDavid Teigland ld = (struct gfs2_log_descriptor *)bh->b_data; 141b3b94faaSDavid Teigland ptr = (__be64 *)(bh->b_data + offset); 142b3b94faaSDavid Teigland ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 143e3167dedSSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 144e3167dedSSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 145b3b94faaSDavid Teigland ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_METADATA); 146b3b94faaSDavid Teigland ld->ld_length = cpu_to_be32(num + 1); 147b3b94faaSDavid Teigland ld->ld_data1 = cpu_to_be32(num); 148b3b94faaSDavid Teigland ld->ld_data2 = cpu_to_be32(0); 149b3b94faaSDavid Teigland memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); 150b3b94faaSDavid Teigland 151b3b94faaSDavid Teigland n = 0; 152568f4c96SSteven Whitehouse list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, 153568f4c96SSteven Whitehouse bd_le.le_list) { 154b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 155b3b94faaSDavid Teigland if (++n >= num) 156b3b94faaSDavid Teigland break; 157b3b94faaSDavid Teigland } 158b3b94faaSDavid Teigland 159905d2aefSBob Peterson gfs2_log_unlock(sdp); 160b3b94faaSDavid Teigland set_buffer_dirty(bh); 161b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 162905d2aefSBob Peterson gfs2_log_lock(sdp); 163b3b94faaSDavid Teigland 164b3b94faaSDavid Teigland n = 0; 165568f4c96SSteven Whitehouse list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, 166568f4c96SSteven Whitehouse bd_le.le_list) { 167905d2aefSBob Peterson gfs2_log_unlock(sdp); 168b3b94faaSDavid Teigland bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); 169b3b94faaSDavid Teigland set_buffer_dirty(bh); 170b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 171905d2aefSBob Peterson gfs2_log_lock(sdp); 172b3b94faaSDavid Teigland if (++n >= num) 173b3b94faaSDavid Teigland break; 174b3b94faaSDavid Teigland } 175b3b94faaSDavid Teigland 176905d2aefSBob Peterson BUG_ON(total < num); 177b3b94faaSDavid Teigland total -= num; 178b3b94faaSDavid Teigland } 179905d2aefSBob Peterson gfs2_log_unlock(sdp); 180b3b94faaSDavid Teigland } 181b3b94faaSDavid Teigland 182b3b94faaSDavid Teigland static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 183b3b94faaSDavid Teigland { 184b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_buf; 185b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 186b3b94faaSDavid Teigland 187b3b94faaSDavid Teigland while (!list_empty(head)) { 188b3b94faaSDavid Teigland bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 189b3b94faaSDavid Teigland list_del_init(&bd->bd_le.le_list); 190b3b94faaSDavid Teigland sdp->sd_log_num_buf--; 191b3b94faaSDavid Teigland 192a98ab220SSteven Whitehouse gfs2_unpin(sdp, bd->bd_bh, ai); 193b3b94faaSDavid Teigland } 194b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); 195b3b94faaSDavid Teigland } 196b3b94faaSDavid Teigland 197b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 19855167622SAl Viro struct gfs2_log_header_host *head, int pass) 199b3b94faaSDavid Teigland { 200feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 201b3b94faaSDavid Teigland 202b3b94faaSDavid Teigland if (pass != 0) 203b3b94faaSDavid Teigland return; 204b3b94faaSDavid Teigland 205b3b94faaSDavid Teigland sdp->sd_found_blocks = 0; 206b3b94faaSDavid Teigland sdp->sd_replayed_blocks = 0; 207b3b94faaSDavid Teigland } 208b3b94faaSDavid Teigland 209b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 210b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 211b3b94faaSDavid Teigland int pass) 212b3b94faaSDavid Teigland { 213feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 214feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 2155c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 216b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 217b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 218cd915493SSteven Whitehouse u64 blkno; 219b3b94faaSDavid Teigland int error = 0; 220b3b94faaSDavid Teigland 221b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 222b3b94faaSDavid Teigland return 0; 223b3b94faaSDavid Teigland 224b3b94faaSDavid Teigland gfs2_replay_incr_blk(sdp, &start); 225b3b94faaSDavid Teigland 226b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 227b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 228b3b94faaSDavid Teigland 229b3b94faaSDavid Teigland sdp->sd_found_blocks++; 230b3b94faaSDavid Teigland 231b3b94faaSDavid Teigland if (gfs2_revoke_check(sdp, blkno, start)) 232b3b94faaSDavid Teigland continue; 233b3b94faaSDavid Teigland 234b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 235b3b94faaSDavid Teigland if (error) 236b3b94faaSDavid Teigland return error; 237b3b94faaSDavid Teigland 238b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 239b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 240b3b94faaSDavid Teigland 241b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 242b3b94faaSDavid Teigland error = -EIO; 243b3b94faaSDavid Teigland else 244b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 245b3b94faaSDavid Teigland 246b3b94faaSDavid Teigland brelse(bh_log); 247b3b94faaSDavid Teigland brelse(bh_ip); 248b3b94faaSDavid Teigland 249b3b94faaSDavid Teigland if (error) 250b3b94faaSDavid Teigland break; 251b3b94faaSDavid Teigland 252b3b94faaSDavid Teigland sdp->sd_replayed_blocks++; 253b3b94faaSDavid Teigland } 254b3b94faaSDavid Teigland 255b3b94faaSDavid Teigland return error; 256b3b94faaSDavid Teigland } 257b3b94faaSDavid Teigland 258b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 259b3b94faaSDavid Teigland { 260feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 261feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 262b3b94faaSDavid Teigland 263b3b94faaSDavid Teigland if (error) { 2647276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 265b3b94faaSDavid Teigland return; 266b3b94faaSDavid Teigland } 267b3b94faaSDavid Teigland if (pass != 1) 268b3b94faaSDavid Teigland return; 269b3b94faaSDavid Teigland 2707276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 271b3b94faaSDavid Teigland 272b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 273b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 274b3b94faaSDavid Teigland } 275b3b94faaSDavid Teigland 276b3b94faaSDavid Teigland static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 277b3b94faaSDavid Teigland { 278b3b94faaSDavid Teigland struct gfs2_trans *tr; 279b3b94faaSDavid Teigland 2805c676f6dSSteven Whitehouse tr = current->journal_info; 281b3b94faaSDavid Teigland tr->tr_touched = 1; 282b3b94faaSDavid Teigland tr->tr_num_revoke++; 283b3b94faaSDavid Teigland 284b3b94faaSDavid Teigland gfs2_log_lock(sdp); 285b3b94faaSDavid Teigland sdp->sd_log_num_revoke++; 286b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_revoke); 287b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 288b3b94faaSDavid Teigland } 289b3b94faaSDavid Teigland 290b3b94faaSDavid Teigland static void revoke_lo_before_commit(struct gfs2_sbd *sdp) 291b3b94faaSDavid Teigland { 292b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 293b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 294b3b94faaSDavid Teigland struct buffer_head *bh; 295b3b94faaSDavid Teigland unsigned int offset; 296b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 297b3b94faaSDavid Teigland struct gfs2_revoke *rv; 298b3b94faaSDavid Teigland 299b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 300b3b94faaSDavid Teigland return; 301b3b94faaSDavid Teigland 302b3b94faaSDavid Teigland bh = gfs2_log_get_buf(sdp); 303b3b94faaSDavid Teigland ld = (struct gfs2_log_descriptor *)bh->b_data; 304b3b94faaSDavid Teigland ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 305e3167dedSSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 306e3167dedSSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 307b3b94faaSDavid Teigland ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_REVOKE); 308568f4c96SSteven Whitehouse ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, 309cd915493SSteven Whitehouse sizeof(u64))); 310b3b94faaSDavid Teigland ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); 311b3b94faaSDavid Teigland ld->ld_data2 = cpu_to_be32(0); 312b3b94faaSDavid Teigland memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); 313b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 314b3b94faaSDavid Teigland 315b3b94faaSDavid Teigland while (!list_empty(head)) { 316b3b94faaSDavid Teigland rv = list_entry(head->next, struct gfs2_revoke, rv_le.le_list); 31713538b8eSSteven Whitehouse list_del_init(&rv->rv_le.le_list); 318b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 319b3b94faaSDavid Teigland 320cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 321b3b94faaSDavid Teigland set_buffer_dirty(bh); 322b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 323b3b94faaSDavid Teigland 324b3b94faaSDavid Teigland bh = gfs2_log_get_buf(sdp); 325b3b94faaSDavid Teigland mh = (struct gfs2_meta_header *)bh->b_data; 326b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 327e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 328e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 329b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 330b3b94faaSDavid Teigland } 331b3b94faaSDavid Teigland 332b3b94faaSDavid Teigland *(__be64 *)(bh->b_data + offset) = cpu_to_be64(rv->rv_blkno); 333b3b94faaSDavid Teigland kfree(rv); 334b3b94faaSDavid Teigland 335cd915493SSteven Whitehouse offset += sizeof(u64); 336b3b94faaSDavid Teigland } 337b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 338b3b94faaSDavid Teigland 339b3b94faaSDavid Teigland set_buffer_dirty(bh); 340b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 341b3b94faaSDavid Teigland } 342b3b94faaSDavid Teigland 343b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 34455167622SAl Viro struct gfs2_log_header_host *head, int pass) 345b3b94faaSDavid Teigland { 346feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 347b3b94faaSDavid Teigland 348b3b94faaSDavid Teigland if (pass != 0) 349b3b94faaSDavid Teigland return; 350b3b94faaSDavid Teigland 351b3b94faaSDavid Teigland sdp->sd_found_revokes = 0; 352b3b94faaSDavid Teigland sdp->sd_replay_tail = head->lh_tail; 353b3b94faaSDavid Teigland } 354b3b94faaSDavid Teigland 355b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 356b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 357b3b94faaSDavid Teigland int pass) 358b3b94faaSDavid Teigland { 359feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 360b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 361b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 362b3b94faaSDavid Teigland struct buffer_head *bh; 363b3b94faaSDavid Teigland unsigned int offset; 364cd915493SSteven Whitehouse u64 blkno; 365b3b94faaSDavid Teigland int first = 1; 366b3b94faaSDavid Teigland int error; 367b3b94faaSDavid Teigland 368b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 369b3b94faaSDavid Teigland return 0; 370b3b94faaSDavid Teigland 371b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 372b3b94faaSDavid Teigland 373b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 374b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 375b3b94faaSDavid Teigland if (error) 376b3b94faaSDavid Teigland return error; 377b3b94faaSDavid Teigland 378b3b94faaSDavid Teigland if (!first) 379b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 380b3b94faaSDavid Teigland 381cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 382b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 383b3b94faaSDavid Teigland 384b3b94faaSDavid Teigland error = gfs2_revoke_add(sdp, blkno, start); 385b3b94faaSDavid Teigland if (error < 0) 386b3b94faaSDavid Teigland return error; 387b3b94faaSDavid Teigland else if (error) 388b3b94faaSDavid Teigland sdp->sd_found_revokes++; 389b3b94faaSDavid Teigland 390b3b94faaSDavid Teigland if (!--revokes) 391b3b94faaSDavid Teigland break; 392cd915493SSteven Whitehouse offset += sizeof(u64); 393b3b94faaSDavid Teigland } 394b3b94faaSDavid Teigland 395b3b94faaSDavid Teigland brelse(bh); 396b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 397b3b94faaSDavid Teigland first = 0; 398b3b94faaSDavid Teigland } 399b3b94faaSDavid Teigland 400b3b94faaSDavid Teigland return 0; 401b3b94faaSDavid Teigland } 402b3b94faaSDavid Teigland 403b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 404b3b94faaSDavid Teigland { 405feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 406b3b94faaSDavid Teigland 407b3b94faaSDavid Teigland if (error) { 408b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 409b3b94faaSDavid Teigland return; 410b3b94faaSDavid Teigland } 411b3b94faaSDavid Teigland if (pass != 1) 412b3b94faaSDavid Teigland return; 413b3b94faaSDavid Teigland 414b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 415b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_found_revokes); 416b3b94faaSDavid Teigland 417b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 418b3b94faaSDavid Teigland } 419b3b94faaSDavid Teigland 420b3b94faaSDavid Teigland static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 421b3b94faaSDavid Teigland { 422b3b94faaSDavid Teigland struct gfs2_rgrpd *rgd; 4235c676f6dSSteven Whitehouse struct gfs2_trans *tr = current->journal_info; 424b3b94faaSDavid Teigland 4255c676f6dSSteven Whitehouse tr->tr_touched = 1; 426b3b94faaSDavid Teigland 427b3b94faaSDavid Teigland rgd = container_of(le, struct gfs2_rgrpd, rd_le); 428b3b94faaSDavid Teigland 429b3b94faaSDavid Teigland gfs2_log_lock(sdp); 43068835625SBenjamin Marzinski if (!list_empty(&le->le_list)){ 43168835625SBenjamin Marzinski gfs2_log_unlock(sdp); 43268835625SBenjamin Marzinski return; 43368835625SBenjamin Marzinski } 43468835625SBenjamin Marzinski gfs2_rgrp_bh_hold(rgd); 435b3b94faaSDavid Teigland sdp->sd_log_num_rg++; 436b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_rg); 437b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 438b3b94faaSDavid Teigland } 439b3b94faaSDavid Teigland 440b3b94faaSDavid Teigland static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 441b3b94faaSDavid Teigland { 442b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_rg; 443b3b94faaSDavid Teigland struct gfs2_rgrpd *rgd; 444b3b94faaSDavid Teigland 445b3b94faaSDavid Teigland while (!list_empty(head)) { 446b3b94faaSDavid Teigland rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list); 447b3b94faaSDavid Teigland list_del_init(&rgd->rd_le.le_list); 448b3b94faaSDavid Teigland sdp->sd_log_num_rg--; 449b3b94faaSDavid Teigland 450b3b94faaSDavid Teigland gfs2_rgrp_repolish_clones(rgd); 451b3b94faaSDavid Teigland gfs2_rgrp_bh_put(rgd); 452b3b94faaSDavid Teigland } 453b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_rg); 454b3b94faaSDavid Teigland } 455b3b94faaSDavid Teigland 45618ec7d5cSSteven Whitehouse /** 45718ec7d5cSSteven Whitehouse * databuf_lo_add - Add a databuf to the transaction. 45818ec7d5cSSteven Whitehouse * 45918ec7d5cSSteven Whitehouse * This is used in two distinct cases: 46018ec7d5cSSteven Whitehouse * i) In ordered write mode 46118ec7d5cSSteven Whitehouse * We put the data buffer on a list so that we can ensure that its 46218ec7d5cSSteven Whitehouse * synced to disk at the right time 46318ec7d5cSSteven Whitehouse * ii) In journaled data mode 46418ec7d5cSSteven Whitehouse * We need to journal the data block in the same way as metadata in 46518ec7d5cSSteven Whitehouse * the functions above. The difference is that here we have a tag 46618ec7d5cSSteven Whitehouse * which is two __be64's being the block number (as per meta data) 46718ec7d5cSSteven Whitehouse * and a flag which says whether the data block needs escaping or 46818ec7d5cSSteven Whitehouse * not. This means we need a new log entry for each 251 or so data 46918ec7d5cSSteven Whitehouse * blocks, which isn't an enormous overhead but twice as much as 47018ec7d5cSSteven Whitehouse * for normal metadata blocks. 47118ec7d5cSSteven Whitehouse */ 472b3b94faaSDavid Teigland static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 473b3b94faaSDavid Teigland { 47418ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 4755c676f6dSSteven Whitehouse struct gfs2_trans *tr = current->journal_info; 47618ec7d5cSSteven Whitehouse struct address_space *mapping = bd->bd_bh->b_page->mapping; 477feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(mapping->host); 478b3b94faaSDavid Teigland 4798bd95727SSteven Whitehouse gfs2_log_lock(sdp); 4802332c443SRobert Peterson if (!list_empty(&bd->bd_list_tr)) { 4812332c443SRobert Peterson gfs2_log_unlock(sdp); 4822332c443SRobert Peterson return; 4832332c443SRobert Peterson } 48418ec7d5cSSteven Whitehouse tr->tr_touched = 1; 485773ed1a0SRobert Peterson if (gfs2_is_jdata(ip)) { 48618ec7d5cSSteven Whitehouse tr->tr_num_buf++; 48718ec7d5cSSteven Whitehouse list_add(&bd->bd_list_tr, &tr->tr_list_buf); 488773ed1a0SRobert Peterson } 4898bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 490ddf4b426SBenjamin Marzinski if (!list_empty(&le->le_list)) 491ddf4b426SBenjamin Marzinski return; 4922332c443SRobert Peterson 493b61dde79SSteven Whitehouse gfs2_trans_add_gl(bd->bd_gl); 4942332c443SRobert Peterson if (gfs2_is_jdata(ip)) { 49518ec7d5cSSteven Whitehouse sdp->sd_log_num_jdata++; 4962332c443SRobert Peterson gfs2_pin(sdp, bd->bd_bh); 4972332c443SRobert Peterson tr->tr_num_databuf_new++; 49813538b8eSSteven Whitehouse } 4992332c443SRobert Peterson gfs2_log_lock(sdp); 500bdcb8856SBob Peterson sdp->sd_log_num_databuf++; 5012332c443SRobert Peterson list_add(&le->le_list, &sdp->sd_log_le_databuf); 502b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 503b3b94faaSDavid Teigland } 504b3b94faaSDavid Teigland 50518ec7d5cSSteven Whitehouse static int gfs2_check_magic(struct buffer_head *bh) 50618ec7d5cSSteven Whitehouse { 50718ec7d5cSSteven Whitehouse struct page *page = bh->b_page; 50818ec7d5cSSteven Whitehouse void *kaddr; 50918ec7d5cSSteven Whitehouse __be32 *ptr; 51018ec7d5cSSteven Whitehouse int rv = 0; 51118ec7d5cSSteven Whitehouse 51218ec7d5cSSteven Whitehouse kaddr = kmap_atomic(page, KM_USER0); 51318ec7d5cSSteven Whitehouse ptr = kaddr + bh_offset(bh); 51418ec7d5cSSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 51518ec7d5cSSteven Whitehouse rv = 1; 516c312c4fdSRussell Cattelan kunmap_atomic(kaddr, KM_USER0); 51718ec7d5cSSteven Whitehouse 51818ec7d5cSSteven Whitehouse return rv; 51918ec7d5cSSteven Whitehouse } 52018ec7d5cSSteven Whitehouse 52118ec7d5cSSteven Whitehouse /** 52218ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 52318ec7d5cSSteven Whitehouse * 52418ec7d5cSSteven Whitehouse * Here we scan through the lists of buffers and make the assumption 52518ec7d5cSSteven Whitehouse * that any buffer thats been pinned is being journaled, and that 52618ec7d5cSSteven Whitehouse * any unpinned buffer is an ordered write data buffer and therefore 52718ec7d5cSSteven Whitehouse * will be written back rather than journaled. 52818ec7d5cSSteven Whitehouse */ 529b3b94faaSDavid Teigland static void databuf_lo_before_commit(struct gfs2_sbd *sdp) 530b3b94faaSDavid Teigland { 531b3b94faaSDavid Teigland LIST_HEAD(started); 53218ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd1 = NULL, *bd2, *bdt; 53370209331SRussell Cattelan struct buffer_head *bh = NULL,*bh1 = NULL; 53418ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld; 53518ec7d5cSSteven Whitehouse unsigned int limit; 536bdcb8856SBob Peterson unsigned int total_dbuf; 537905d2aefSBob Peterson unsigned int total_jdata; 53818ec7d5cSSteven Whitehouse unsigned int num, n; 539f55ab26aSSteven Whitehouse __be64 *ptr = NULL; 540b3b94faaSDavid Teigland 5412332c443SRobert Peterson limit = databuf_limit(sdp); 542b3b94faaSDavid Teigland 54318ec7d5cSSteven Whitehouse /* 54418ec7d5cSSteven Whitehouse * Start writing ordered buffers, write journaled buffers 54518ec7d5cSSteven Whitehouse * into the log along with a header 54618ec7d5cSSteven Whitehouse */ 547f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 548bdcb8856SBob Peterson total_dbuf = sdp->sd_log_num_databuf; 549905d2aefSBob Peterson total_jdata = sdp->sd_log_num_jdata; 550568f4c96SSteven Whitehouse bd2 = bd1 = list_prepare_entry(bd1, &sdp->sd_log_le_databuf, 551568f4c96SSteven Whitehouse bd_le.le_list); 55218ec7d5cSSteven Whitehouse while(total_dbuf) { 55318ec7d5cSSteven Whitehouse num = total_jdata; 55418ec7d5cSSteven Whitehouse if (num > limit) 55518ec7d5cSSteven Whitehouse num = limit; 55618ec7d5cSSteven Whitehouse n = 0; 557568f4c96SSteven Whitehouse list_for_each_entry_safe_continue(bd1, bdt, 558568f4c96SSteven Whitehouse &sdp->sd_log_le_databuf, 559568f4c96SSteven Whitehouse bd_le.le_list) { 56070209331SRussell Cattelan /* store off the buffer head in a local ptr since 56170209331SRussell Cattelan * gfs2_bufdata might change when we drop the log lock 56270209331SRussell Cattelan */ 56370209331SRussell Cattelan bh1 = bd1->bd_bh; 56470209331SRussell Cattelan 56518ec7d5cSSteven Whitehouse /* An ordered write buffer */ 56670209331SRussell Cattelan if (bh1 && !buffer_pinned(bh1)) { 56718ec7d5cSSteven Whitehouse list_move(&bd1->bd_le.le_list, &started); 56818ec7d5cSSteven Whitehouse if (bd1 == bd2) { 56918ec7d5cSSteven Whitehouse bd2 = NULL; 570568f4c96SSteven Whitehouse bd2 = list_prepare_entry(bd2, 571568f4c96SSteven Whitehouse &sdp->sd_log_le_databuf, 572568f4c96SSteven Whitehouse bd_le.le_list); 57318ec7d5cSSteven Whitehouse } 57418ec7d5cSSteven Whitehouse total_dbuf--; 57570209331SRussell Cattelan if (bh1) { 57670209331SRussell Cattelan if (buffer_dirty(bh1)) { 57770209331SRussell Cattelan get_bh(bh1); 57870209331SRussell Cattelan 579f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 58070209331SRussell Cattelan 58170209331SRussell Cattelan ll_rw_block(SWRITE, 1, &bh1); 58270209331SRussell Cattelan brelse(bh1); 58370209331SRussell Cattelan 584f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 58518ec7d5cSSteven Whitehouse } 58618ec7d5cSSteven Whitehouse continue; 58718ec7d5cSSteven Whitehouse } 58818ec7d5cSSteven Whitehouse continue; 58970209331SRussell Cattelan } else if (bh1) { /* A journaled buffer */ 59018ec7d5cSSteven Whitehouse int magic; 59118ec7d5cSSteven Whitehouse gfs2_log_unlock(sdp); 59218ec7d5cSSteven Whitehouse if (!bh) { 59318ec7d5cSSteven Whitehouse bh = gfs2_log_get_buf(sdp); 594568f4c96SSteven Whitehouse ld = (struct gfs2_log_descriptor *) 595568f4c96SSteven Whitehouse bh->b_data; 5962332c443SRobert Peterson ptr = (__be64 *)(bh->b_data + 5972332c443SRobert Peterson DATABUF_OFFSET); 598568f4c96SSteven Whitehouse ld->ld_header.mh_magic = 599568f4c96SSteven Whitehouse cpu_to_be32(GFS2_MAGIC); 600568f4c96SSteven Whitehouse ld->ld_header.mh_type = 601e3167dedSSteven Whitehouse cpu_to_be32(GFS2_METATYPE_LD); 602568f4c96SSteven Whitehouse ld->ld_header.mh_format = 603e3167dedSSteven Whitehouse cpu_to_be32(GFS2_FORMAT_LD); 604568f4c96SSteven Whitehouse ld->ld_type = 605568f4c96SSteven Whitehouse cpu_to_be32(GFS2_LOG_DESC_JDATA); 60618ec7d5cSSteven Whitehouse ld->ld_length = cpu_to_be32(num + 1); 60718ec7d5cSSteven Whitehouse ld->ld_data1 = cpu_to_be32(num); 60818ec7d5cSSteven Whitehouse ld->ld_data2 = cpu_to_be32(0); 60918ec7d5cSSteven Whitehouse memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); 61018ec7d5cSSteven Whitehouse } 61170209331SRussell Cattelan magic = gfs2_check_magic(bh1); 61270209331SRussell Cattelan *ptr++ = cpu_to_be64(bh1->b_blocknr); 61318ec7d5cSSteven Whitehouse *ptr++ = cpu_to_be64((__u64)magic); 61470209331SRussell Cattelan clear_buffer_escaped(bh1); 61518ec7d5cSSteven Whitehouse if (unlikely(magic != 0)) 61670209331SRussell Cattelan set_buffer_escaped(bh1); 617f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 6182332c443SRobert Peterson if (++n >= num) 61918ec7d5cSSteven Whitehouse break; 62070209331SRussell Cattelan } else if (!bh1) { 621623d9355SSteven Whitehouse total_dbuf--; 622623d9355SSteven Whitehouse sdp->sd_log_num_databuf--; 623623d9355SSteven Whitehouse list_del_init(&bd1->bd_le.le_list); 624623d9355SSteven Whitehouse if (bd1 == bd2) { 625623d9355SSteven Whitehouse bd2 = NULL; 626623d9355SSteven Whitehouse bd2 = list_prepare_entry(bd2, 627623d9355SSteven Whitehouse &sdp->sd_log_le_databuf, 628623d9355SSteven Whitehouse bd_le.le_list); 629623d9355SSteven Whitehouse } 630623d9355SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd1); 63118ec7d5cSSteven Whitehouse } 63218ec7d5cSSteven Whitehouse } 633f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 634b3b94faaSDavid Teigland if (bh) { 63518ec7d5cSSteven Whitehouse set_buffer_dirty(bh); 636b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 63718ec7d5cSSteven Whitehouse bh = NULL; 638905d2aefSBob Peterson ptr = NULL; 639b3b94faaSDavid Teigland } 64018ec7d5cSSteven Whitehouse n = 0; 641f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 642568f4c96SSteven Whitehouse list_for_each_entry_continue(bd2, &sdp->sd_log_le_databuf, 643568f4c96SSteven Whitehouse bd_le.le_list) { 64418ec7d5cSSteven Whitehouse if (!bd2->bd_bh) 64518ec7d5cSSteven Whitehouse continue; 64618ec7d5cSSteven Whitehouse /* copy buffer if it needs escaping */ 647f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 64818ec7d5cSSteven Whitehouse if (unlikely(buffer_escaped(bd2->bd_bh))) { 64918ec7d5cSSteven Whitehouse void *kaddr; 65018ec7d5cSSteven Whitehouse struct page *page = bd2->bd_bh->b_page; 65118ec7d5cSSteven Whitehouse bh = gfs2_log_get_buf(sdp); 65218ec7d5cSSteven Whitehouse kaddr = kmap_atomic(page, KM_USER0); 653568f4c96SSteven Whitehouse memcpy(bh->b_data, 654568f4c96SSteven Whitehouse kaddr + bh_offset(bd2->bd_bh), 655568f4c96SSteven Whitehouse sdp->sd_sb.sb_bsize); 656c312c4fdSRussell Cattelan kunmap_atomic(kaddr, KM_USER0); 65718ec7d5cSSteven Whitehouse *(__be32 *)bh->b_data = 0; 65818ec7d5cSSteven Whitehouse } else { 65918ec7d5cSSteven Whitehouse bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); 660b3b94faaSDavid Teigland } 66118ec7d5cSSteven Whitehouse set_buffer_dirty(bh); 66218ec7d5cSSteven Whitehouse ll_rw_block(WRITE, 1, &bh); 663f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 66418ec7d5cSSteven Whitehouse if (++n >= num) 66518ec7d5cSSteven Whitehouse break; 66618ec7d5cSSteven Whitehouse } 66718ec7d5cSSteven Whitehouse bh = NULL; 668bdcb8856SBob Peterson BUG_ON(total_dbuf < num); 66918ec7d5cSSteven Whitehouse total_dbuf -= num; 67018ec7d5cSSteven Whitehouse total_jdata -= num; 67118ec7d5cSSteven Whitehouse } 672f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 673f55ab26aSSteven Whitehouse 67418ec7d5cSSteven Whitehouse /* Wait on all ordered buffers */ 675b3b94faaSDavid Teigland while (!list_empty(&started)) { 67613538b8eSSteven Whitehouse gfs2_log_lock(sdp); 677568f4c96SSteven Whitehouse bd1 = list_entry(started.next, struct gfs2_bufdata, 678568f4c96SSteven Whitehouse bd_le.le_list); 67908867605SSteven Whitehouse list_del_init(&bd1->bd_le.le_list); 680b3b94faaSDavid Teigland sdp->sd_log_num_databuf--; 68118ec7d5cSSteven Whitehouse bh = bd1->bd_bh; 682b3b94faaSDavid Teigland if (bh) { 6835c676f6dSSteven Whitehouse bh->b_private = NULL; 68415d00c0bSSteven Whitehouse get_bh(bh); 685b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 686b3b94faaSDavid Teigland wait_on_buffer(bh); 687b3b94faaSDavid Teigland brelse(bh); 688b3b94faaSDavid Teigland } else 689b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 690b3b94faaSDavid Teigland 6913a8476ddSSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd1); 692b3b94faaSDavid Teigland } 693b3b94faaSDavid Teigland 69418ec7d5cSSteven Whitehouse /* We've removed all the ordered write bufs here, so only jdata left */ 69518ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, sdp->sd_log_num_databuf == sdp->sd_log_num_jdata); 696b3b94faaSDavid Teigland } 697b3b94faaSDavid Teigland 69818ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 69918ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 70018ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 70118ec7d5cSSteven Whitehouse { 702feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 703feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 7045c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 70518ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 70618ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 707cd915493SSteven Whitehouse u64 blkno; 708cd915493SSteven Whitehouse u64 esc; 70918ec7d5cSSteven Whitehouse int error = 0; 71018ec7d5cSSteven Whitehouse 71118ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 71218ec7d5cSSteven Whitehouse return 0; 71318ec7d5cSSteven Whitehouse 71418ec7d5cSSteven Whitehouse gfs2_replay_incr_blk(sdp, &start); 71518ec7d5cSSteven Whitehouse for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 71618ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 71718ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 71818ec7d5cSSteven Whitehouse 71918ec7d5cSSteven Whitehouse sdp->sd_found_blocks++; 72018ec7d5cSSteven Whitehouse 72118ec7d5cSSteven Whitehouse if (gfs2_revoke_check(sdp, blkno, start)) 72218ec7d5cSSteven Whitehouse continue; 72318ec7d5cSSteven Whitehouse 72418ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 72518ec7d5cSSteven Whitehouse if (error) 72618ec7d5cSSteven Whitehouse return error; 72718ec7d5cSSteven Whitehouse 72818ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 72918ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 73018ec7d5cSSteven Whitehouse 73118ec7d5cSSteven Whitehouse /* Unescape */ 73218ec7d5cSSteven Whitehouse if (esc) { 73318ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 73418ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 73518ec7d5cSSteven Whitehouse } 73618ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 73718ec7d5cSSteven Whitehouse 73818ec7d5cSSteven Whitehouse brelse(bh_log); 73918ec7d5cSSteven Whitehouse brelse(bh_ip); 74018ec7d5cSSteven Whitehouse if (error) 74118ec7d5cSSteven Whitehouse break; 74218ec7d5cSSteven Whitehouse 74318ec7d5cSSteven Whitehouse sdp->sd_replayed_blocks++; 74418ec7d5cSSteven Whitehouse } 74518ec7d5cSSteven Whitehouse 74618ec7d5cSSteven Whitehouse return error; 74718ec7d5cSSteven Whitehouse } 74818ec7d5cSSteven Whitehouse 74918ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 75018ec7d5cSSteven Whitehouse 75118ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 75218ec7d5cSSteven Whitehouse { 753feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 754feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 75518ec7d5cSSteven Whitehouse 75618ec7d5cSSteven Whitehouse if (error) { 7577276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 75818ec7d5cSSteven Whitehouse return; 75918ec7d5cSSteven Whitehouse } 76018ec7d5cSSteven Whitehouse if (pass != 1) 76118ec7d5cSSteven Whitehouse return; 76218ec7d5cSSteven Whitehouse 76318ec7d5cSSteven Whitehouse /* data sync? */ 7647276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 76518ec7d5cSSteven Whitehouse 76618ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 76718ec7d5cSSteven Whitehouse jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 76818ec7d5cSSteven Whitehouse } 76918ec7d5cSSteven Whitehouse 77018ec7d5cSSteven Whitehouse static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 77118ec7d5cSSteven Whitehouse { 77218ec7d5cSSteven Whitehouse struct list_head *head = &sdp->sd_log_le_databuf; 77318ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 77418ec7d5cSSteven Whitehouse 77518ec7d5cSSteven Whitehouse while (!list_empty(head)) { 77618ec7d5cSSteven Whitehouse bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 777b8e1aabfSSteven Whitehouse list_del_init(&bd->bd_le.le_list); 77818ec7d5cSSteven Whitehouse sdp->sd_log_num_databuf--; 77918ec7d5cSSteven Whitehouse sdp->sd_log_num_jdata--; 78018ec7d5cSSteven Whitehouse gfs2_unpin(sdp, bd->bd_bh, ai); 78118ec7d5cSSteven Whitehouse } 78218ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); 78318ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, !sdp->sd_log_num_jdata); 78418ec7d5cSSteven Whitehouse } 78518ec7d5cSSteven Whitehouse 78618ec7d5cSSteven Whitehouse 787b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_glock_lops = { 788b3b94faaSDavid Teigland .lo_add = glock_lo_add, 789b3b94faaSDavid Teigland .lo_after_commit = glock_lo_after_commit, 790ea67eedbSSteven Whitehouse .lo_name = "glock", 791b3b94faaSDavid Teigland }; 792b3b94faaSDavid Teigland 793b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 794b3b94faaSDavid Teigland .lo_add = buf_lo_add, 795b3b94faaSDavid Teigland .lo_incore_commit = buf_lo_incore_commit, 796b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 797b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 798b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 799b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 800b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 801ea67eedbSSteven Whitehouse .lo_name = "buf", 802b3b94faaSDavid Teigland }; 803b3b94faaSDavid Teigland 804b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 805b3b94faaSDavid Teigland .lo_add = revoke_lo_add, 806b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 807b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 808b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 809b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 810ea67eedbSSteven Whitehouse .lo_name = "revoke", 811b3b94faaSDavid Teigland }; 812b3b94faaSDavid Teigland 813b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_rg_lops = { 814b3b94faaSDavid Teigland .lo_add = rg_lo_add, 815b3b94faaSDavid Teigland .lo_after_commit = rg_lo_after_commit, 816ea67eedbSSteven Whitehouse .lo_name = "rg", 817b3b94faaSDavid Teigland }; 818b3b94faaSDavid Teigland 819b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 820b3b94faaSDavid Teigland .lo_add = databuf_lo_add, 82118ec7d5cSSteven Whitehouse .lo_incore_commit = buf_lo_incore_commit, 822b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 82318ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 82418ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 82518ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 826ea67eedbSSteven Whitehouse .lo_name = "databuf", 827b3b94faaSDavid Teigland }; 828b3b94faaSDavid Teigland 829b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 830b3b94faaSDavid Teigland &gfs2_glock_lops, 831b3b94faaSDavid Teigland &gfs2_buf_lops, 832b3b94faaSDavid Teigland &gfs2_revoke_lops, 833b3b94faaSDavid Teigland &gfs2_rg_lops, 834b3b94faaSDavid Teigland &gfs2_databuf_lops, 835ea67eedbSSteven Whitehouse NULL, 836b3b94faaSDavid Teigland }; 837b3b94faaSDavid Teigland 838