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" 20b3b94faaSDavid Teigland #include "glock.h" 21b3b94faaSDavid Teigland #include "log.h" 22b3b94faaSDavid Teigland #include "lops.h" 23b3b94faaSDavid Teigland #include "meta_io.h" 24b3b94faaSDavid Teigland #include "recovery.h" 25b3b94faaSDavid Teigland #include "rgrp.h" 26b3b94faaSDavid Teigland #include "trans.h" 275c676f6dSSteven Whitehouse #include "util.h" 28b3b94faaSDavid Teigland 29b3b94faaSDavid Teigland static void glock_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 30b3b94faaSDavid Teigland { 31b3b94faaSDavid Teigland struct gfs2_glock *gl; 325c676f6dSSteven Whitehouse struct gfs2_trans *tr = current->journal_info; 33b3b94faaSDavid Teigland 345c676f6dSSteven Whitehouse tr->tr_touched = 1; 35b3b94faaSDavid Teigland 36b3b94faaSDavid Teigland gl = container_of(le, struct gfs2_glock, gl_le); 37b3b94faaSDavid Teigland if (gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl))) 38b3b94faaSDavid Teigland return; 39b3b94faaSDavid Teigland 40b3b94faaSDavid Teigland gfs2_log_lock(sdp); 4168835625SBenjamin Marzinski if (!list_empty(&le->le_list)){ 4268835625SBenjamin Marzinski gfs2_log_unlock(sdp); 4368835625SBenjamin Marzinski return; 4468835625SBenjamin Marzinski } 4568835625SBenjamin Marzinski gfs2_glock_hold(gl); 4668835625SBenjamin Marzinski set_bit(GLF_DIRTY, &gl->gl_flags); 47b3b94faaSDavid Teigland sdp->sd_log_num_gl++; 48b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_gl); 49b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 50b3b94faaSDavid Teigland } 51b3b94faaSDavid Teigland 52b3b94faaSDavid Teigland static void glock_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 53b3b94faaSDavid Teigland { 54b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_gl; 55b3b94faaSDavid Teigland struct gfs2_glock *gl; 56b3b94faaSDavid Teigland 57b3b94faaSDavid Teigland while (!list_empty(head)) { 58b3b94faaSDavid Teigland gl = list_entry(head->next, struct gfs2_glock, gl_le.le_list); 59b3b94faaSDavid Teigland list_del_init(&gl->gl_le.le_list); 60b3b94faaSDavid Teigland sdp->sd_log_num_gl--; 61b3b94faaSDavid Teigland 62b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, gfs2_glock_is_held_excl(gl)); 63b3b94faaSDavid Teigland gfs2_glock_put(gl); 64b3b94faaSDavid Teigland } 65b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_gl); 66b3b94faaSDavid Teigland } 67b3b94faaSDavid Teigland 68b3b94faaSDavid Teigland static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 69b3b94faaSDavid Teigland { 70b3b94faaSDavid Teigland struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 71b3b94faaSDavid Teigland struct gfs2_trans *tr; 72b3b94faaSDavid Teigland 738bd95727SSteven Whitehouse gfs2_log_lock(sdp); 748bd95727SSteven Whitehouse if (!list_empty(&bd->bd_list_tr)) { 758bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 76b3b94faaSDavid Teigland return; 778bd95727SSteven Whitehouse } 785c676f6dSSteven Whitehouse tr = current->journal_info; 79b3b94faaSDavid Teigland tr->tr_touched = 1; 80b3b94faaSDavid Teigland tr->tr_num_buf++; 81b3b94faaSDavid Teigland list_add(&bd->bd_list_tr, &tr->tr_list_buf); 828bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 83b3b94faaSDavid Teigland 84b3b94faaSDavid Teigland if (!list_empty(&le->le_list)) 85b3b94faaSDavid Teigland return; 86b3b94faaSDavid Teigland 87b3b94faaSDavid Teigland gfs2_trans_add_gl(bd->bd_gl); 88b3b94faaSDavid Teigland 89b3b94faaSDavid Teigland gfs2_meta_check(sdp, bd->bd_bh); 90a98ab220SSteven Whitehouse gfs2_pin(sdp, bd->bd_bh); 91b3b94faaSDavid Teigland gfs2_log_lock(sdp); 92b3b94faaSDavid Teigland sdp->sd_log_num_buf++; 93b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_buf); 94b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 95b3b94faaSDavid Teigland 96b3b94faaSDavid Teigland tr->tr_num_buf_new++; 97b3b94faaSDavid Teigland } 98b3b94faaSDavid Teigland 99b3b94faaSDavid Teigland static void buf_lo_incore_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 100b3b94faaSDavid Teigland { 101b3b94faaSDavid Teigland struct list_head *head = &tr->tr_list_buf; 102b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 103b3b94faaSDavid Teigland 1048bd95727SSteven Whitehouse gfs2_log_lock(sdp); 105b3b94faaSDavid Teigland while (!list_empty(head)) { 106b3b94faaSDavid Teigland bd = list_entry(head->next, struct gfs2_bufdata, bd_list_tr); 107b3b94faaSDavid Teigland list_del_init(&bd->bd_list_tr); 108b3b94faaSDavid Teigland tr->tr_num_buf--; 109b3b94faaSDavid Teigland } 1108bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 111b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !tr->tr_num_buf); 112b3b94faaSDavid Teigland } 113b3b94faaSDavid Teigland 114b3b94faaSDavid Teigland static void buf_lo_before_commit(struct gfs2_sbd *sdp) 115b3b94faaSDavid Teigland { 116b3b94faaSDavid Teigland struct buffer_head *bh; 117b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 118b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 119b3b94faaSDavid Teigland unsigned int total = sdp->sd_log_num_buf; 120b3b94faaSDavid Teigland unsigned int offset = sizeof(struct gfs2_log_descriptor); 121b3b94faaSDavid Teigland unsigned int limit; 122b3b94faaSDavid Teigland unsigned int num; 123b3b94faaSDavid Teigland unsigned n; 124b3b94faaSDavid Teigland __be64 *ptr; 125b3b94faaSDavid Teigland 12682ffa516SSteven Whitehouse offset += sizeof(__be64) - 1; 127b3b94faaSDavid Teigland offset &= ~(sizeof(__be64) - 1); 128b3b94faaSDavid Teigland limit = (sdp->sd_sb.sb_bsize - offset)/sizeof(__be64); 129b3b94faaSDavid Teigland /* for 4k blocks, limit = 503 */ 130b3b94faaSDavid Teigland 131b3b94faaSDavid Teigland bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); 132b3b94faaSDavid Teigland while(total) { 133b3b94faaSDavid Teigland num = total; 134b3b94faaSDavid Teigland if (total > limit) 135b3b94faaSDavid Teigland num = limit; 136b3b94faaSDavid Teigland bh = gfs2_log_get_buf(sdp); 137b09e593dSSteven Whitehouse sdp->sd_log_num_hdrs++; 138b3b94faaSDavid Teigland ld = (struct gfs2_log_descriptor *)bh->b_data; 139b3b94faaSDavid Teigland ptr = (__be64 *)(bh->b_data + offset); 140b3b94faaSDavid Teigland ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 141e3167dedSSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 142e3167dedSSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 143b3b94faaSDavid Teigland ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_METADATA); 144b3b94faaSDavid Teigland ld->ld_length = cpu_to_be32(num + 1); 145b3b94faaSDavid Teigland ld->ld_data1 = cpu_to_be32(num); 146b3b94faaSDavid Teigland ld->ld_data2 = cpu_to_be32(0); 147b3b94faaSDavid Teigland memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); 148b3b94faaSDavid Teigland 149b3b94faaSDavid Teigland n = 0; 150568f4c96SSteven Whitehouse list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, 151568f4c96SSteven Whitehouse bd_le.le_list) { 152b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 153b3b94faaSDavid Teigland if (++n >= num) 154b3b94faaSDavid Teigland break; 155b3b94faaSDavid Teigland } 156b3b94faaSDavid Teigland 157b3b94faaSDavid Teigland set_buffer_dirty(bh); 158b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 159b3b94faaSDavid Teigland 160b3b94faaSDavid Teigland n = 0; 161568f4c96SSteven Whitehouse list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, 162568f4c96SSteven Whitehouse bd_le.le_list) { 163b3b94faaSDavid Teigland bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); 164b3b94faaSDavid Teigland set_buffer_dirty(bh); 165b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 166b3b94faaSDavid Teigland if (++n >= num) 167b3b94faaSDavid Teigland break; 168b3b94faaSDavid Teigland } 169b3b94faaSDavid Teigland 170b3b94faaSDavid Teigland total -= num; 171b3b94faaSDavid Teigland } 172b3b94faaSDavid Teigland } 173b3b94faaSDavid Teigland 174b3b94faaSDavid Teigland static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 175b3b94faaSDavid Teigland { 176b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_buf; 177b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 178b3b94faaSDavid Teigland 179b3b94faaSDavid Teigland while (!list_empty(head)) { 180b3b94faaSDavid Teigland bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 181b3b94faaSDavid Teigland list_del_init(&bd->bd_le.le_list); 182b3b94faaSDavid Teigland sdp->sd_log_num_buf--; 183b3b94faaSDavid Teigland 184a98ab220SSteven Whitehouse gfs2_unpin(sdp, bd->bd_bh, ai); 185b3b94faaSDavid Teigland } 186b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); 187b3b94faaSDavid Teigland } 188b3b94faaSDavid Teigland 189b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 19055167622SAl Viro struct gfs2_log_header_host *head, int pass) 191b3b94faaSDavid Teigland { 192feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 193b3b94faaSDavid Teigland 194b3b94faaSDavid Teigland if (pass != 0) 195b3b94faaSDavid Teigland return; 196b3b94faaSDavid Teigland 197b3b94faaSDavid Teigland sdp->sd_found_blocks = 0; 198b3b94faaSDavid Teigland sdp->sd_replayed_blocks = 0; 199b3b94faaSDavid Teigland } 200b3b94faaSDavid Teigland 201b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 202b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 203b3b94faaSDavid Teigland int pass) 204b3b94faaSDavid Teigland { 205feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 206feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 2075c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 208b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 209b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 210cd915493SSteven Whitehouse u64 blkno; 211b3b94faaSDavid Teigland int error = 0; 212b3b94faaSDavid Teigland 213b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 214b3b94faaSDavid Teigland return 0; 215b3b94faaSDavid Teigland 216b3b94faaSDavid Teigland gfs2_replay_incr_blk(sdp, &start); 217b3b94faaSDavid Teigland 218b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 219b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 220b3b94faaSDavid Teigland 221b3b94faaSDavid Teigland sdp->sd_found_blocks++; 222b3b94faaSDavid Teigland 223b3b94faaSDavid Teigland if (gfs2_revoke_check(sdp, blkno, start)) 224b3b94faaSDavid Teigland continue; 225b3b94faaSDavid Teigland 226b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 227b3b94faaSDavid Teigland if (error) 228b3b94faaSDavid Teigland return error; 229b3b94faaSDavid Teigland 230b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 231b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 232b3b94faaSDavid Teigland 233b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 234b3b94faaSDavid Teigland error = -EIO; 235b3b94faaSDavid Teigland else 236b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 237b3b94faaSDavid Teigland 238b3b94faaSDavid Teigland brelse(bh_log); 239b3b94faaSDavid Teigland brelse(bh_ip); 240b3b94faaSDavid Teigland 241b3b94faaSDavid Teigland if (error) 242b3b94faaSDavid Teigland break; 243b3b94faaSDavid Teigland 244b3b94faaSDavid Teigland sdp->sd_replayed_blocks++; 245b3b94faaSDavid Teigland } 246b3b94faaSDavid Teigland 247b3b94faaSDavid Teigland return error; 248b3b94faaSDavid Teigland } 249b3b94faaSDavid Teigland 250b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 251b3b94faaSDavid Teigland { 252feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 253feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 254b3b94faaSDavid Teigland 255b3b94faaSDavid Teigland if (error) { 2567276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 257b3b94faaSDavid Teigland return; 258b3b94faaSDavid Teigland } 259b3b94faaSDavid Teigland if (pass != 1) 260b3b94faaSDavid Teigland return; 261b3b94faaSDavid Teigland 2627276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 263b3b94faaSDavid Teigland 264b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 265b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 266b3b94faaSDavid Teigland } 267b3b94faaSDavid Teigland 268b3b94faaSDavid Teigland static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 269b3b94faaSDavid Teigland { 270b3b94faaSDavid Teigland struct gfs2_trans *tr; 271b3b94faaSDavid Teigland 2725c676f6dSSteven Whitehouse tr = current->journal_info; 273b3b94faaSDavid Teigland tr->tr_touched = 1; 274b3b94faaSDavid Teigland tr->tr_num_revoke++; 275b3b94faaSDavid Teigland 276b3b94faaSDavid Teigland gfs2_log_lock(sdp); 277b3b94faaSDavid Teigland sdp->sd_log_num_revoke++; 278b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_revoke); 279b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 280b3b94faaSDavid Teigland } 281b3b94faaSDavid Teigland 282b3b94faaSDavid Teigland static void revoke_lo_before_commit(struct gfs2_sbd *sdp) 283b3b94faaSDavid Teigland { 284b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 285b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 286b3b94faaSDavid Teigland struct buffer_head *bh; 287b3b94faaSDavid Teigland unsigned int offset; 288b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 289b3b94faaSDavid Teigland struct gfs2_revoke *rv; 290b3b94faaSDavid Teigland 291b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 292b3b94faaSDavid Teigland return; 293b3b94faaSDavid Teigland 294b3b94faaSDavid Teigland bh = gfs2_log_get_buf(sdp); 295b3b94faaSDavid Teigland ld = (struct gfs2_log_descriptor *)bh->b_data; 296b3b94faaSDavid Teigland ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 297e3167dedSSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 298e3167dedSSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 299b3b94faaSDavid Teigland ld->ld_type = cpu_to_be32(GFS2_LOG_DESC_REVOKE); 300568f4c96SSteven Whitehouse ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, 301cd915493SSteven Whitehouse sizeof(u64))); 302b3b94faaSDavid Teigland ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); 303b3b94faaSDavid Teigland ld->ld_data2 = cpu_to_be32(0); 304b3b94faaSDavid Teigland memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); 305b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 306b3b94faaSDavid Teigland 307b3b94faaSDavid Teigland while (!list_empty(head)) { 308b3b94faaSDavid Teigland rv = list_entry(head->next, struct gfs2_revoke, rv_le.le_list); 30913538b8eSSteven Whitehouse list_del_init(&rv->rv_le.le_list); 310b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 311b3b94faaSDavid Teigland 312cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 313b3b94faaSDavid Teigland set_buffer_dirty(bh); 314b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 315b3b94faaSDavid Teigland 316b3b94faaSDavid Teigland bh = gfs2_log_get_buf(sdp); 317b3b94faaSDavid Teigland mh = (struct gfs2_meta_header *)bh->b_data; 318b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 319e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 320e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 321b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 322b3b94faaSDavid Teigland } 323b3b94faaSDavid Teigland 324b3b94faaSDavid Teigland *(__be64 *)(bh->b_data + offset) = cpu_to_be64(rv->rv_blkno); 325b3b94faaSDavid Teigland kfree(rv); 326b3b94faaSDavid Teigland 327cd915493SSteven Whitehouse offset += sizeof(u64); 328b3b94faaSDavid Teigland } 329b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 330b3b94faaSDavid Teigland 331b3b94faaSDavid Teigland set_buffer_dirty(bh); 332b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 333b3b94faaSDavid Teigland } 334b3b94faaSDavid Teigland 335b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 33655167622SAl Viro struct gfs2_log_header_host *head, int pass) 337b3b94faaSDavid Teigland { 338feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 339b3b94faaSDavid Teigland 340b3b94faaSDavid Teigland if (pass != 0) 341b3b94faaSDavid Teigland return; 342b3b94faaSDavid Teigland 343b3b94faaSDavid Teigland sdp->sd_found_revokes = 0; 344b3b94faaSDavid Teigland sdp->sd_replay_tail = head->lh_tail; 345b3b94faaSDavid Teigland } 346b3b94faaSDavid Teigland 347b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 348b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 349b3b94faaSDavid Teigland int pass) 350b3b94faaSDavid Teigland { 351feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 352b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 353b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 354b3b94faaSDavid Teigland struct buffer_head *bh; 355b3b94faaSDavid Teigland unsigned int offset; 356cd915493SSteven Whitehouse u64 blkno; 357b3b94faaSDavid Teigland int first = 1; 358b3b94faaSDavid Teigland int error; 359b3b94faaSDavid Teigland 360b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 361b3b94faaSDavid Teigland return 0; 362b3b94faaSDavid Teigland 363b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 364b3b94faaSDavid Teigland 365b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 366b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 367b3b94faaSDavid Teigland if (error) 368b3b94faaSDavid Teigland return error; 369b3b94faaSDavid Teigland 370b3b94faaSDavid Teigland if (!first) 371b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 372b3b94faaSDavid Teigland 373cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 374b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 375b3b94faaSDavid Teigland 376b3b94faaSDavid Teigland error = gfs2_revoke_add(sdp, blkno, start); 377b3b94faaSDavid Teigland if (error < 0) 378b3b94faaSDavid Teigland return error; 379b3b94faaSDavid Teigland else if (error) 380b3b94faaSDavid Teigland sdp->sd_found_revokes++; 381b3b94faaSDavid Teigland 382b3b94faaSDavid Teigland if (!--revokes) 383b3b94faaSDavid Teigland break; 384cd915493SSteven Whitehouse offset += sizeof(u64); 385b3b94faaSDavid Teigland } 386b3b94faaSDavid Teigland 387b3b94faaSDavid Teigland brelse(bh); 388b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 389b3b94faaSDavid Teigland first = 0; 390b3b94faaSDavid Teigland } 391b3b94faaSDavid Teigland 392b3b94faaSDavid Teigland return 0; 393b3b94faaSDavid Teigland } 394b3b94faaSDavid Teigland 395b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 396b3b94faaSDavid Teigland { 397feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 398b3b94faaSDavid Teigland 399b3b94faaSDavid Teigland if (error) { 400b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 401b3b94faaSDavid Teigland return; 402b3b94faaSDavid Teigland } 403b3b94faaSDavid Teigland if (pass != 1) 404b3b94faaSDavid Teigland return; 405b3b94faaSDavid Teigland 406b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 407b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_found_revokes); 408b3b94faaSDavid Teigland 409b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 410b3b94faaSDavid Teigland } 411b3b94faaSDavid Teigland 412b3b94faaSDavid Teigland static void rg_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 413b3b94faaSDavid Teigland { 414b3b94faaSDavid Teigland struct gfs2_rgrpd *rgd; 4155c676f6dSSteven Whitehouse struct gfs2_trans *tr = current->journal_info; 416b3b94faaSDavid Teigland 4175c676f6dSSteven Whitehouse tr->tr_touched = 1; 418b3b94faaSDavid Teigland 419b3b94faaSDavid Teigland rgd = container_of(le, struct gfs2_rgrpd, rd_le); 420b3b94faaSDavid Teigland 421b3b94faaSDavid Teigland gfs2_log_lock(sdp); 42268835625SBenjamin Marzinski if (!list_empty(&le->le_list)){ 42368835625SBenjamin Marzinski gfs2_log_unlock(sdp); 42468835625SBenjamin Marzinski return; 42568835625SBenjamin Marzinski } 42668835625SBenjamin Marzinski gfs2_rgrp_bh_hold(rgd); 427b3b94faaSDavid Teigland sdp->sd_log_num_rg++; 428b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_rg); 429b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 430b3b94faaSDavid Teigland } 431b3b94faaSDavid Teigland 432b3b94faaSDavid Teigland static void rg_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 433b3b94faaSDavid Teigland { 434b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_rg; 435b3b94faaSDavid Teigland struct gfs2_rgrpd *rgd; 436b3b94faaSDavid Teigland 437b3b94faaSDavid Teigland while (!list_empty(head)) { 438b3b94faaSDavid Teigland rgd = list_entry(head->next, struct gfs2_rgrpd, rd_le.le_list); 439b3b94faaSDavid Teigland list_del_init(&rgd->rd_le.le_list); 440b3b94faaSDavid Teigland sdp->sd_log_num_rg--; 441b3b94faaSDavid Teigland 442b3b94faaSDavid Teigland gfs2_rgrp_repolish_clones(rgd); 443b3b94faaSDavid Teigland gfs2_rgrp_bh_put(rgd); 444b3b94faaSDavid Teigland } 445b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_rg); 446b3b94faaSDavid Teigland } 447b3b94faaSDavid Teigland 44818ec7d5cSSteven Whitehouse /** 44918ec7d5cSSteven Whitehouse * databuf_lo_add - Add a databuf to the transaction. 45018ec7d5cSSteven Whitehouse * 45118ec7d5cSSteven Whitehouse * This is used in two distinct cases: 45218ec7d5cSSteven Whitehouse * i) In ordered write mode 45318ec7d5cSSteven Whitehouse * We put the data buffer on a list so that we can ensure that its 45418ec7d5cSSteven Whitehouse * synced to disk at the right time 45518ec7d5cSSteven Whitehouse * ii) In journaled data mode 45618ec7d5cSSteven Whitehouse * We need to journal the data block in the same way as metadata in 45718ec7d5cSSteven Whitehouse * the functions above. The difference is that here we have a tag 45818ec7d5cSSteven Whitehouse * which is two __be64's being the block number (as per meta data) 45918ec7d5cSSteven Whitehouse * and a flag which says whether the data block needs escaping or 46018ec7d5cSSteven Whitehouse * not. This means we need a new log entry for each 251 or so data 46118ec7d5cSSteven Whitehouse * blocks, which isn't an enormous overhead but twice as much as 46218ec7d5cSSteven Whitehouse * for normal metadata blocks. 46318ec7d5cSSteven Whitehouse */ 464b3b94faaSDavid Teigland static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 465b3b94faaSDavid Teigland { 46618ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 4675c676f6dSSteven Whitehouse struct gfs2_trans *tr = current->journal_info; 46818ec7d5cSSteven Whitehouse struct address_space *mapping = bd->bd_bh->b_page->mapping; 469feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(mapping->host); 470b3b94faaSDavid Teigland 4718bd95727SSteven Whitehouse gfs2_log_lock(sdp); 47218ec7d5cSSteven Whitehouse tr->tr_touched = 1; 47315d00c0bSSteven Whitehouse if (list_empty(&bd->bd_list_tr) && 47418ec7d5cSSteven Whitehouse (ip->i_di.di_flags & GFS2_DIF_JDATA)) { 47518ec7d5cSSteven Whitehouse tr->tr_num_buf++; 47618ec7d5cSSteven Whitehouse list_add(&bd->bd_list_tr, &tr->tr_list_buf); 4778bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 478ddf4b426SBenjamin Marzinski if (!list_empty(&le->le_list)) 479ddf4b426SBenjamin Marzinski return; 48018ec7d5cSSteven Whitehouse gfs2_pin(sdp, bd->bd_bh); 481b4dc7291SSteven Whitehouse tr->tr_num_buf_new++; 4828bd95727SSteven Whitehouse } else { 4838bd95727SSteven Whitehouse gfs2_log_unlock(sdp); 48418ec7d5cSSteven Whitehouse } 485b61dde79SSteven Whitehouse gfs2_trans_add_gl(bd->bd_gl); 486b3b94faaSDavid Teigland gfs2_log_lock(sdp); 48715d00c0bSSteven Whitehouse if (list_empty(&le->le_list)) { 48818ec7d5cSSteven Whitehouse if (ip->i_di.di_flags & GFS2_DIF_JDATA) 48918ec7d5cSSteven Whitehouse sdp->sd_log_num_jdata++; 490b3b94faaSDavid Teigland sdp->sd_log_num_databuf++; 491b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_databuf); 49213538b8eSSteven Whitehouse } 493b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 494b3b94faaSDavid Teigland } 495b3b94faaSDavid Teigland 49618ec7d5cSSteven Whitehouse static int gfs2_check_magic(struct buffer_head *bh) 49718ec7d5cSSteven Whitehouse { 49818ec7d5cSSteven Whitehouse struct page *page = bh->b_page; 49918ec7d5cSSteven Whitehouse void *kaddr; 50018ec7d5cSSteven Whitehouse __be32 *ptr; 50118ec7d5cSSteven Whitehouse int rv = 0; 50218ec7d5cSSteven Whitehouse 50318ec7d5cSSteven Whitehouse kaddr = kmap_atomic(page, KM_USER0); 50418ec7d5cSSteven Whitehouse ptr = kaddr + bh_offset(bh); 50518ec7d5cSSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 50618ec7d5cSSteven Whitehouse rv = 1; 507c312c4fdSRussell Cattelan kunmap_atomic(kaddr, KM_USER0); 50818ec7d5cSSteven Whitehouse 50918ec7d5cSSteven Whitehouse return rv; 51018ec7d5cSSteven Whitehouse } 51118ec7d5cSSteven Whitehouse 51218ec7d5cSSteven Whitehouse /** 51318ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 51418ec7d5cSSteven Whitehouse * 51518ec7d5cSSteven Whitehouse * Here we scan through the lists of buffers and make the assumption 51618ec7d5cSSteven Whitehouse * that any buffer thats been pinned is being journaled, and that 51718ec7d5cSSteven Whitehouse * any unpinned buffer is an ordered write data buffer and therefore 51818ec7d5cSSteven Whitehouse * will be written back rather than journaled. 51918ec7d5cSSteven Whitehouse */ 520b3b94faaSDavid Teigland static void databuf_lo_before_commit(struct gfs2_sbd *sdp) 521b3b94faaSDavid Teigland { 522b3b94faaSDavid Teigland LIST_HEAD(started); 52318ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd1 = NULL, *bd2, *bdt; 52470209331SRussell Cattelan struct buffer_head *bh = NULL,*bh1 = NULL; 52518ec7d5cSSteven Whitehouse unsigned int offset = sizeof(struct gfs2_log_descriptor); 52618ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld; 52718ec7d5cSSteven Whitehouse unsigned int limit; 52818ec7d5cSSteven Whitehouse unsigned int total_dbuf = sdp->sd_log_num_databuf; 52918ec7d5cSSteven Whitehouse unsigned int total_jdata = sdp->sd_log_num_jdata; 53018ec7d5cSSteven Whitehouse unsigned int num, n; 531f55ab26aSSteven Whitehouse __be64 *ptr = NULL; 532b3b94faaSDavid Teigland 533a67cdbd4SSteven Whitehouse offset += 2*sizeof(__be64) - 1; 53418ec7d5cSSteven Whitehouse offset &= ~(2*sizeof(__be64) - 1); 53518ec7d5cSSteven Whitehouse limit = (sdp->sd_sb.sb_bsize - offset)/sizeof(__be64); 536b3b94faaSDavid Teigland 53718ec7d5cSSteven Whitehouse /* 53818ec7d5cSSteven Whitehouse * Start writing ordered buffers, write journaled buffers 53918ec7d5cSSteven Whitehouse * into the log along with a header 54018ec7d5cSSteven Whitehouse */ 541f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 542568f4c96SSteven Whitehouse bd2 = bd1 = list_prepare_entry(bd1, &sdp->sd_log_le_databuf, 543568f4c96SSteven Whitehouse bd_le.le_list); 54418ec7d5cSSteven Whitehouse while(total_dbuf) { 54518ec7d5cSSteven Whitehouse num = total_jdata; 54618ec7d5cSSteven Whitehouse if (num > limit) 54718ec7d5cSSteven Whitehouse num = limit; 54818ec7d5cSSteven Whitehouse n = 0; 549568f4c96SSteven Whitehouse list_for_each_entry_safe_continue(bd1, bdt, 550568f4c96SSteven Whitehouse &sdp->sd_log_le_databuf, 551568f4c96SSteven Whitehouse bd_le.le_list) { 55270209331SRussell Cattelan /* store off the buffer head in a local ptr since 55370209331SRussell Cattelan * gfs2_bufdata might change when we drop the log lock 55470209331SRussell Cattelan */ 55570209331SRussell Cattelan bh1 = bd1->bd_bh; 55670209331SRussell Cattelan 55718ec7d5cSSteven Whitehouse /* An ordered write buffer */ 55870209331SRussell Cattelan if (bh1 && !buffer_pinned(bh1)) { 55918ec7d5cSSteven Whitehouse list_move(&bd1->bd_le.le_list, &started); 56018ec7d5cSSteven Whitehouse if (bd1 == bd2) { 56118ec7d5cSSteven Whitehouse bd2 = NULL; 562568f4c96SSteven Whitehouse bd2 = list_prepare_entry(bd2, 563568f4c96SSteven Whitehouse &sdp->sd_log_le_databuf, 564568f4c96SSteven Whitehouse bd_le.le_list); 56518ec7d5cSSteven Whitehouse } 56618ec7d5cSSteven Whitehouse total_dbuf--; 56770209331SRussell Cattelan if (bh1) { 56870209331SRussell Cattelan if (buffer_dirty(bh1)) { 56970209331SRussell Cattelan get_bh(bh1); 57070209331SRussell Cattelan 571f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 57270209331SRussell Cattelan 57370209331SRussell Cattelan ll_rw_block(SWRITE, 1, &bh1); 57470209331SRussell Cattelan brelse(bh1); 57570209331SRussell Cattelan 576f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 57718ec7d5cSSteven Whitehouse } 57818ec7d5cSSteven Whitehouse continue; 57918ec7d5cSSteven Whitehouse } 58018ec7d5cSSteven Whitehouse continue; 58170209331SRussell Cattelan } else if (bh1) { /* A journaled buffer */ 58218ec7d5cSSteven Whitehouse int magic; 58318ec7d5cSSteven Whitehouse gfs2_log_unlock(sdp); 58418ec7d5cSSteven Whitehouse if (!bh) { 58518ec7d5cSSteven Whitehouse bh = gfs2_log_get_buf(sdp); 586b09e593dSSteven Whitehouse sdp->sd_log_num_hdrs++; 587568f4c96SSteven Whitehouse ld = (struct gfs2_log_descriptor *) 588568f4c96SSteven Whitehouse bh->b_data; 58918ec7d5cSSteven Whitehouse ptr = (__be64 *)(bh->b_data + offset); 590568f4c96SSteven Whitehouse ld->ld_header.mh_magic = 591568f4c96SSteven Whitehouse cpu_to_be32(GFS2_MAGIC); 592568f4c96SSteven Whitehouse ld->ld_header.mh_type = 593e3167dedSSteven Whitehouse cpu_to_be32(GFS2_METATYPE_LD); 594568f4c96SSteven Whitehouse ld->ld_header.mh_format = 595e3167dedSSteven Whitehouse cpu_to_be32(GFS2_FORMAT_LD); 596568f4c96SSteven Whitehouse ld->ld_type = 597568f4c96SSteven Whitehouse cpu_to_be32(GFS2_LOG_DESC_JDATA); 59818ec7d5cSSteven Whitehouse ld->ld_length = cpu_to_be32(num + 1); 59918ec7d5cSSteven Whitehouse ld->ld_data1 = cpu_to_be32(num); 60018ec7d5cSSteven Whitehouse ld->ld_data2 = cpu_to_be32(0); 60118ec7d5cSSteven Whitehouse memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); 60218ec7d5cSSteven Whitehouse } 60370209331SRussell Cattelan magic = gfs2_check_magic(bh1); 60470209331SRussell Cattelan *ptr++ = cpu_to_be64(bh1->b_blocknr); 60518ec7d5cSSteven Whitehouse *ptr++ = cpu_to_be64((__u64)magic); 60670209331SRussell Cattelan clear_buffer_escaped(bh1); 60718ec7d5cSSteven Whitehouse if (unlikely(magic != 0)) 60870209331SRussell Cattelan set_buffer_escaped(bh1); 609f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 6108fb68595SRobert Peterson n += 2; 6118fb68595SRobert Peterson if (n >= num) 61218ec7d5cSSteven Whitehouse break; 61370209331SRussell Cattelan } else if (!bh1) { 614623d9355SSteven Whitehouse total_dbuf--; 615623d9355SSteven Whitehouse sdp->sd_log_num_databuf--; 616623d9355SSteven Whitehouse list_del_init(&bd1->bd_le.le_list); 617623d9355SSteven Whitehouse if (bd1 == bd2) { 618623d9355SSteven Whitehouse bd2 = NULL; 619623d9355SSteven Whitehouse bd2 = list_prepare_entry(bd2, 620623d9355SSteven Whitehouse &sdp->sd_log_le_databuf, 621623d9355SSteven Whitehouse bd_le.le_list); 622623d9355SSteven Whitehouse } 623623d9355SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd1); 62418ec7d5cSSteven Whitehouse } 62518ec7d5cSSteven Whitehouse } 626f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 627b3b94faaSDavid Teigland if (bh) { 6288fb68595SRobert Peterson set_buffer_mapped(bh); 62918ec7d5cSSteven Whitehouse set_buffer_dirty(bh); 630b3b94faaSDavid Teigland ll_rw_block(WRITE, 1, &bh); 63118ec7d5cSSteven Whitehouse bh = NULL; 632b3b94faaSDavid Teigland } 63318ec7d5cSSteven Whitehouse n = 0; 634f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 635568f4c96SSteven Whitehouse list_for_each_entry_continue(bd2, &sdp->sd_log_le_databuf, 636568f4c96SSteven Whitehouse bd_le.le_list) { 63718ec7d5cSSteven Whitehouse if (!bd2->bd_bh) 63818ec7d5cSSteven Whitehouse continue; 63918ec7d5cSSteven Whitehouse /* copy buffer if it needs escaping */ 640f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 64118ec7d5cSSteven Whitehouse if (unlikely(buffer_escaped(bd2->bd_bh))) { 64218ec7d5cSSteven Whitehouse void *kaddr; 64318ec7d5cSSteven Whitehouse struct page *page = bd2->bd_bh->b_page; 64418ec7d5cSSteven Whitehouse bh = gfs2_log_get_buf(sdp); 64518ec7d5cSSteven Whitehouse kaddr = kmap_atomic(page, KM_USER0); 646568f4c96SSteven Whitehouse memcpy(bh->b_data, 647568f4c96SSteven Whitehouse kaddr + bh_offset(bd2->bd_bh), 648568f4c96SSteven Whitehouse sdp->sd_sb.sb_bsize); 649c312c4fdSRussell Cattelan kunmap_atomic(kaddr, KM_USER0); 65018ec7d5cSSteven Whitehouse *(__be32 *)bh->b_data = 0; 65118ec7d5cSSteven Whitehouse } else { 65218ec7d5cSSteven Whitehouse bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); 653b3b94faaSDavid Teigland } 65418ec7d5cSSteven Whitehouse set_buffer_dirty(bh); 65518ec7d5cSSteven Whitehouse ll_rw_block(WRITE, 1, &bh); 656f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 65718ec7d5cSSteven Whitehouse if (++n >= num) 65818ec7d5cSSteven Whitehouse break; 65918ec7d5cSSteven Whitehouse } 66018ec7d5cSSteven Whitehouse bh = NULL; 66118ec7d5cSSteven Whitehouse total_dbuf -= num; 66218ec7d5cSSteven Whitehouse total_jdata -= num; 66318ec7d5cSSteven Whitehouse } 664f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 665f55ab26aSSteven Whitehouse 66618ec7d5cSSteven Whitehouse /* Wait on all ordered buffers */ 667b3b94faaSDavid Teigland while (!list_empty(&started)) { 66813538b8eSSteven Whitehouse gfs2_log_lock(sdp); 669568f4c96SSteven Whitehouse bd1 = list_entry(started.next, struct gfs2_bufdata, 670568f4c96SSteven Whitehouse bd_le.le_list); 67108867605SSteven Whitehouse list_del_init(&bd1->bd_le.le_list); 672b3b94faaSDavid Teigland sdp->sd_log_num_databuf--; 67318ec7d5cSSteven Whitehouse bh = bd1->bd_bh; 674b3b94faaSDavid Teigland if (bh) { 6755c676f6dSSteven Whitehouse bh->b_private = NULL; 67615d00c0bSSteven Whitehouse get_bh(bh); 677b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 678b3b94faaSDavid Teigland wait_on_buffer(bh); 679b3b94faaSDavid Teigland brelse(bh); 680b3b94faaSDavid Teigland } else 681b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 682b3b94faaSDavid Teigland 6833a8476ddSSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd1); 684b3b94faaSDavid Teigland } 685b3b94faaSDavid Teigland 68618ec7d5cSSteven Whitehouse /* We've removed all the ordered write bufs here, so only jdata left */ 68718ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, sdp->sd_log_num_databuf == sdp->sd_log_num_jdata); 688b3b94faaSDavid Teigland } 689b3b94faaSDavid Teigland 69018ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 69118ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 69218ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 69318ec7d5cSSteven Whitehouse { 694feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 695feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 6965c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 69718ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 69818ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 699cd915493SSteven Whitehouse u64 blkno; 700cd915493SSteven Whitehouse u64 esc; 70118ec7d5cSSteven Whitehouse int error = 0; 70218ec7d5cSSteven Whitehouse 70318ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 70418ec7d5cSSteven Whitehouse return 0; 70518ec7d5cSSteven Whitehouse 70618ec7d5cSSteven Whitehouse gfs2_replay_incr_blk(sdp, &start); 70718ec7d5cSSteven Whitehouse for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 70818ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 70918ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 71018ec7d5cSSteven Whitehouse 71118ec7d5cSSteven Whitehouse sdp->sd_found_blocks++; 71218ec7d5cSSteven Whitehouse 71318ec7d5cSSteven Whitehouse if (gfs2_revoke_check(sdp, blkno, start)) 71418ec7d5cSSteven Whitehouse continue; 71518ec7d5cSSteven Whitehouse 71618ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 71718ec7d5cSSteven Whitehouse if (error) 71818ec7d5cSSteven Whitehouse return error; 71918ec7d5cSSteven Whitehouse 72018ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 72118ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 72218ec7d5cSSteven Whitehouse 72318ec7d5cSSteven Whitehouse /* Unescape */ 72418ec7d5cSSteven Whitehouse if (esc) { 72518ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 72618ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 72718ec7d5cSSteven Whitehouse } 72818ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 72918ec7d5cSSteven Whitehouse 73018ec7d5cSSteven Whitehouse brelse(bh_log); 73118ec7d5cSSteven Whitehouse brelse(bh_ip); 73218ec7d5cSSteven Whitehouse if (error) 73318ec7d5cSSteven Whitehouse break; 73418ec7d5cSSteven Whitehouse 73518ec7d5cSSteven Whitehouse sdp->sd_replayed_blocks++; 73618ec7d5cSSteven Whitehouse } 73718ec7d5cSSteven Whitehouse 73818ec7d5cSSteven Whitehouse return error; 73918ec7d5cSSteven Whitehouse } 74018ec7d5cSSteven Whitehouse 74118ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 74218ec7d5cSSteven Whitehouse 74318ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 74418ec7d5cSSteven Whitehouse { 745feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 746feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 74718ec7d5cSSteven Whitehouse 74818ec7d5cSSteven Whitehouse if (error) { 7497276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 75018ec7d5cSSteven Whitehouse return; 75118ec7d5cSSteven Whitehouse } 75218ec7d5cSSteven Whitehouse if (pass != 1) 75318ec7d5cSSteven Whitehouse return; 75418ec7d5cSSteven Whitehouse 75518ec7d5cSSteven Whitehouse /* data sync? */ 7567276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 75718ec7d5cSSteven Whitehouse 75818ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 75918ec7d5cSSteven Whitehouse jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 76018ec7d5cSSteven Whitehouse } 76118ec7d5cSSteven Whitehouse 76218ec7d5cSSteven Whitehouse static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 76318ec7d5cSSteven Whitehouse { 76418ec7d5cSSteven Whitehouse struct list_head *head = &sdp->sd_log_le_databuf; 76518ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 76618ec7d5cSSteven Whitehouse 76718ec7d5cSSteven Whitehouse while (!list_empty(head)) { 76818ec7d5cSSteven Whitehouse bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 769b8e1aabfSSteven Whitehouse list_del_init(&bd->bd_le.le_list); 77018ec7d5cSSteven Whitehouse sdp->sd_log_num_databuf--; 77118ec7d5cSSteven Whitehouse sdp->sd_log_num_jdata--; 77218ec7d5cSSteven Whitehouse gfs2_unpin(sdp, bd->bd_bh, ai); 77318ec7d5cSSteven Whitehouse } 77418ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); 77518ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, !sdp->sd_log_num_jdata); 77618ec7d5cSSteven Whitehouse } 77718ec7d5cSSteven Whitehouse 77818ec7d5cSSteven Whitehouse 779b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_glock_lops = { 780b3b94faaSDavid Teigland .lo_add = glock_lo_add, 781b3b94faaSDavid Teigland .lo_after_commit = glock_lo_after_commit, 782ea67eedbSSteven Whitehouse .lo_name = "glock", 783b3b94faaSDavid Teigland }; 784b3b94faaSDavid Teigland 785b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 786b3b94faaSDavid Teigland .lo_add = buf_lo_add, 787b3b94faaSDavid Teigland .lo_incore_commit = buf_lo_incore_commit, 788b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 789b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 790b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 791b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 792b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 793ea67eedbSSteven Whitehouse .lo_name = "buf", 794b3b94faaSDavid Teigland }; 795b3b94faaSDavid Teigland 796b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 797b3b94faaSDavid Teigland .lo_add = revoke_lo_add, 798b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 799b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 800b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 801b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 802ea67eedbSSteven Whitehouse .lo_name = "revoke", 803b3b94faaSDavid Teigland }; 804b3b94faaSDavid Teigland 805b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_rg_lops = { 806b3b94faaSDavid Teigland .lo_add = rg_lo_add, 807b3b94faaSDavid Teigland .lo_after_commit = rg_lo_after_commit, 808ea67eedbSSteven Whitehouse .lo_name = "rg", 809b3b94faaSDavid Teigland }; 810b3b94faaSDavid Teigland 811b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 812b3b94faaSDavid Teigland .lo_add = databuf_lo_add, 81318ec7d5cSSteven Whitehouse .lo_incore_commit = buf_lo_incore_commit, 814b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 81518ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 81618ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 81718ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 818ea67eedbSSteven Whitehouse .lo_name = "databuf", 819b3b94faaSDavid Teigland }; 820b3b94faaSDavid Teigland 821b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 822b3b94faaSDavid Teigland &gfs2_glock_lops, 823b3b94faaSDavid Teigland &gfs2_buf_lops, 824b3b94faaSDavid Teigland &gfs2_revoke_lops, 825b3b94faaSDavid Teigland &gfs2_rg_lops, 826b3b94faaSDavid Teigland &gfs2_databuf_lops, 827ea67eedbSSteven Whitehouse NULL, 828b3b94faaSDavid Teigland }; 829b3b94faaSDavid Teigland 830