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> 16c969f58cSSteven Whitehouse #include <linux/bio.h> 17c969f58cSSteven Whitehouse #include <linux/fs.h> 18b3b94faaSDavid Teigland 19b3b94faaSDavid Teigland #include "gfs2.h" 205c676f6dSSteven Whitehouse #include "incore.h" 212332c443SRobert Peterson #include "inode.h" 22b3b94faaSDavid Teigland #include "glock.h" 23b3b94faaSDavid Teigland #include "log.h" 24b3b94faaSDavid Teigland #include "lops.h" 25b3b94faaSDavid Teigland #include "meta_io.h" 26b3b94faaSDavid Teigland #include "recovery.h" 27b3b94faaSDavid Teigland #include "rgrp.h" 28b3b94faaSDavid Teigland #include "trans.h" 295c676f6dSSteven Whitehouse #include "util.h" 3063997775SSteven Whitehouse #include "trace_gfs2.h" 31b3b94faaSDavid Teigland 329b9107a5SSteven Whitehouse /** 339b9107a5SSteven Whitehouse * gfs2_pin - Pin a buffer in memory 349b9107a5SSteven Whitehouse * @sdp: The superblock 359b9107a5SSteven Whitehouse * @bh: The buffer to be pinned 369b9107a5SSteven Whitehouse * 379b9107a5SSteven Whitehouse * The log lock must be held when calling this function 389b9107a5SSteven Whitehouse */ 399b9107a5SSteven Whitehouse static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) 409b9107a5SSteven Whitehouse { 419b9107a5SSteven Whitehouse struct gfs2_bufdata *bd; 429b9107a5SSteven Whitehouse 4329687a2aSSteven Whitehouse BUG_ON(!current->journal_info); 449b9107a5SSteven Whitehouse 459b9107a5SSteven Whitehouse clear_buffer_dirty(bh); 469b9107a5SSteven Whitehouse if (test_set_buffer_pinned(bh)) 479b9107a5SSteven Whitehouse gfs2_assert_withdraw(sdp, 0); 489b9107a5SSteven Whitehouse if (!buffer_uptodate(bh)) 499b9107a5SSteven Whitehouse gfs2_io_error_bh(sdp, bh); 509b9107a5SSteven Whitehouse bd = bh->b_private; 519b9107a5SSteven Whitehouse /* If this buffer is in the AIL and it has already been written 529b9107a5SSteven Whitehouse * to in-place disk block, remove it from the AIL. 539b9107a5SSteven Whitehouse */ 54c618e87aSSteven Whitehouse spin_lock(&sdp->sd_ail_lock); 559b9107a5SSteven Whitehouse if (bd->bd_ail) 569b9107a5SSteven Whitehouse list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list); 57c618e87aSSteven Whitehouse spin_unlock(&sdp->sd_ail_lock); 589b9107a5SSteven Whitehouse get_bh(bh); 595e687eacSBenjamin Marzinski atomic_inc(&sdp->sd_log_pinned); 6063997775SSteven Whitehouse trace_gfs2_pin(bd, 1); 619b9107a5SSteven Whitehouse } 629b9107a5SSteven Whitehouse 637c9ca621SBob Peterson static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) 647c9ca621SBob Peterson { 657c9ca621SBob Peterson return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; 667c9ca621SBob Peterson } 677c9ca621SBob Peterson 687c9ca621SBob Peterson static void maybe_release_space(struct gfs2_bufdata *bd) 697c9ca621SBob Peterson { 707c9ca621SBob Peterson struct gfs2_glock *gl = bd->bd_gl; 717c9ca621SBob Peterson struct gfs2_sbd *sdp = gl->gl_sbd; 727c9ca621SBob Peterson struct gfs2_rgrpd *rgd = gl->gl_object; 737c9ca621SBob Peterson unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; 747c9ca621SBob Peterson struct gfs2_bitmap *bi = rgd->rd_bits + index; 757c9ca621SBob Peterson 767c9ca621SBob Peterson if (bi->bi_clone == 0) 777c9ca621SBob Peterson return; 787c9ca621SBob Peterson if (sdp->sd_args.ar_discard) 797c9ca621SBob Peterson gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi); 807c9ca621SBob Peterson memcpy(bi->bi_clone + bi->bi_offset, 817c9ca621SBob Peterson bd->bd_bh->b_data + bi->bi_offset, bi->bi_len); 827c9ca621SBob Peterson clear_bit(GBF_FULL, &bi->bi_flags); 837c9ca621SBob Peterson rgd->rd_free_clone = rgd->rd_free; 847c9ca621SBob Peterson } 857c9ca621SBob Peterson 869b9107a5SSteven Whitehouse /** 879b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 889b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 899b9107a5SSteven Whitehouse * @bh: The buffer to unpin 909b9107a5SSteven Whitehouse * @ai: 9129687a2aSSteven Whitehouse * @flags: The inode dirty flags 929b9107a5SSteven Whitehouse * 939b9107a5SSteven Whitehouse */ 949b9107a5SSteven Whitehouse 959b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 969b9107a5SSteven Whitehouse struct gfs2_ail *ai) 979b9107a5SSteven Whitehouse { 989b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 999b9107a5SSteven Whitehouse 10029687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10129687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1029b9107a5SSteven Whitehouse 1039b9107a5SSteven Whitehouse lock_buffer(bh); 1049b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1059b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1069b9107a5SSteven Whitehouse 1077c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1087c9ca621SBob Peterson maybe_release_space(bd); 1097c9ca621SBob Peterson 110d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 1119b9107a5SSteven Whitehouse if (bd->bd_ail) { 1129b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1139b9107a5SSteven Whitehouse brelse(bh); 1149b9107a5SSteven Whitehouse } else { 1159b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1169b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1179b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1189b9107a5SSteven Whitehouse } 1199b9107a5SSteven Whitehouse bd->bd_ail = ai; 1209b9107a5SSteven Whitehouse list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list); 121d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 122d6a079e8SDave Chinner 12329687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 12463997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1259b9107a5SSteven Whitehouse unlock_buffer(bh); 1265e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1279b9107a5SSteven Whitehouse } 1289b9107a5SSteven Whitehouse 12916615be1SSteven Whitehouse 13016615be1SSteven Whitehouse static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh) 13116615be1SSteven Whitehouse { 13216615be1SSteven Whitehouse return (struct gfs2_log_descriptor *)bh->b_data; 13316615be1SSteven Whitehouse } 13416615be1SSteven Whitehouse 13516615be1SSteven Whitehouse static inline __be64 *bh_log_ptr(struct buffer_head *bh) 13616615be1SSteven Whitehouse { 13716615be1SSteven Whitehouse struct gfs2_log_descriptor *ld = bh_log_desc(bh); 13816615be1SSteven Whitehouse return (__force __be64 *)(ld + 1); 13916615be1SSteven Whitehouse } 14016615be1SSteven Whitehouse 14116615be1SSteven Whitehouse static inline __be64 *bh_ptr_end(struct buffer_head *bh) 14216615be1SSteven Whitehouse { 14316615be1SSteven Whitehouse return (__force __be64 *)(bh->b_data + bh->b_size); 14416615be1SSteven Whitehouse } 14516615be1SSteven Whitehouse 14616615be1SSteven Whitehouse 14716615be1SSteven Whitehouse static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type) 14816615be1SSteven Whitehouse { 14916615be1SSteven Whitehouse struct buffer_head *bh = gfs2_log_get_buf(sdp); 15016615be1SSteven Whitehouse struct gfs2_log_descriptor *ld = bh_log_desc(bh); 15116615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 15216615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 15316615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 15416615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 15516615be1SSteven Whitehouse ld->ld_length = 0; 15616615be1SSteven Whitehouse ld->ld_data1 = 0; 15716615be1SSteven Whitehouse ld->ld_data2 = 0; 15816615be1SSteven Whitehouse memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); 15916615be1SSteven Whitehouse return bh; 16016615be1SSteven Whitehouse } 16116615be1SSteven Whitehouse 162b3b94faaSDavid Teigland static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 163b3b94faaSDavid Teigland { 164b3b94faaSDavid Teigland struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 1650ab7d13fSSteven Whitehouse struct gfs2_meta_header *mh; 166b3b94faaSDavid Teigland struct gfs2_trans *tr; 167b3b94faaSDavid Teigland 1689b9107a5SSteven Whitehouse lock_buffer(bd->bd_bh); 1698bd95727SSteven Whitehouse gfs2_log_lock(sdp); 1709b9107a5SSteven Whitehouse if (!list_empty(&bd->bd_list_tr)) 1719b9107a5SSteven Whitehouse goto out; 1725c676f6dSSteven Whitehouse tr = current->journal_info; 173b3b94faaSDavid Teigland tr->tr_touched = 1; 174b3b94faaSDavid Teigland tr->tr_num_buf++; 175b3b94faaSDavid Teigland list_add(&bd->bd_list_tr, &tr->tr_list_buf); 176b3b94faaSDavid Teigland if (!list_empty(&le->le_list)) 1779b9107a5SSteven Whitehouse goto out; 1782bcd610dSSteven Whitehouse set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 1792bcd610dSSteven Whitehouse set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); 180b3b94faaSDavid Teigland gfs2_meta_check(sdp, bd->bd_bh); 181a98ab220SSteven Whitehouse gfs2_pin(sdp, bd->bd_bh); 1820ab7d13fSSteven Whitehouse mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; 1830ab7d13fSSteven Whitehouse mh->__pad0 = cpu_to_be64(0); 1840ab7d13fSSteven Whitehouse mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); 185b3b94faaSDavid Teigland sdp->sd_log_num_buf++; 186b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_buf); 187b3b94faaSDavid Teigland tr->tr_num_buf_new++; 1889b9107a5SSteven Whitehouse out: 1899b9107a5SSteven Whitehouse gfs2_log_unlock(sdp); 1909b9107a5SSteven Whitehouse unlock_buffer(bd->bd_bh); 191b3b94faaSDavid Teigland } 192b3b94faaSDavid Teigland 193b3b94faaSDavid Teigland static void buf_lo_before_commit(struct gfs2_sbd *sdp) 194b3b94faaSDavid Teigland { 195b3b94faaSDavid Teigland struct buffer_head *bh; 196b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 197b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 198905d2aefSBob Peterson unsigned int total; 199b3b94faaSDavid Teigland unsigned int limit; 200b3b94faaSDavid Teigland unsigned int num; 201b3b94faaSDavid Teigland unsigned n; 202b3b94faaSDavid Teigland __be64 *ptr; 203b3b94faaSDavid Teigland 2042332c443SRobert Peterson limit = buf_limit(sdp); 205b3b94faaSDavid Teigland /* for 4k blocks, limit = 503 */ 206b3b94faaSDavid Teigland 207905d2aefSBob Peterson gfs2_log_lock(sdp); 208905d2aefSBob Peterson total = sdp->sd_log_num_buf; 209b3b94faaSDavid Teigland bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); 210b3b94faaSDavid Teigland while(total) { 211b3b94faaSDavid Teigland num = total; 212b3b94faaSDavid Teigland if (total > limit) 213b3b94faaSDavid Teigland num = limit; 214905d2aefSBob Peterson gfs2_log_unlock(sdp); 21516615be1SSteven Whitehouse bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA); 216905d2aefSBob Peterson gfs2_log_lock(sdp); 21716615be1SSteven Whitehouse ld = bh_log_desc(bh); 21816615be1SSteven Whitehouse ptr = bh_log_ptr(bh); 219b3b94faaSDavid Teigland ld->ld_length = cpu_to_be32(num + 1); 220b3b94faaSDavid Teigland ld->ld_data1 = cpu_to_be32(num); 221b3b94faaSDavid Teigland 222b3b94faaSDavid Teigland n = 0; 223568f4c96SSteven Whitehouse list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, 224568f4c96SSteven Whitehouse bd_le.le_list) { 225b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 226b3b94faaSDavid Teigland if (++n >= num) 227b3b94faaSDavid Teigland break; 228b3b94faaSDavid Teigland } 229b3b94faaSDavid Teigland 230905d2aefSBob Peterson gfs2_log_unlock(sdp); 231721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 232905d2aefSBob Peterson gfs2_log_lock(sdp); 233b3b94faaSDavid Teigland 234b3b94faaSDavid Teigland n = 0; 235568f4c96SSteven Whitehouse list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, 236568f4c96SSteven Whitehouse bd_le.le_list) { 23716615be1SSteven Whitehouse get_bh(bd2->bd_bh); 238905d2aefSBob Peterson gfs2_log_unlock(sdp); 23916615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 240b3b94faaSDavid Teigland bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); 241721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 242905d2aefSBob Peterson gfs2_log_lock(sdp); 243b3b94faaSDavid Teigland if (++n >= num) 244b3b94faaSDavid Teigland break; 245b3b94faaSDavid Teigland } 246b3b94faaSDavid Teigland 247905d2aefSBob Peterson BUG_ON(total < num); 248b3b94faaSDavid Teigland total -= num; 249b3b94faaSDavid Teigland } 250905d2aefSBob Peterson gfs2_log_unlock(sdp); 251b3b94faaSDavid Teigland } 252b3b94faaSDavid Teigland 253b3b94faaSDavid Teigland static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 254b3b94faaSDavid Teigland { 255b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_buf; 256b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 257b3b94faaSDavid Teigland 258b3b94faaSDavid Teigland while (!list_empty(head)) { 259b3b94faaSDavid Teigland bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 260b3b94faaSDavid Teigland list_del_init(&bd->bd_le.le_list); 261b3b94faaSDavid Teigland sdp->sd_log_num_buf--; 262b3b94faaSDavid Teigland 263a98ab220SSteven Whitehouse gfs2_unpin(sdp, bd->bd_bh, ai); 264b3b94faaSDavid Teigland } 265b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); 266b3b94faaSDavid Teigland } 267b3b94faaSDavid Teigland 268b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 26955167622SAl Viro struct gfs2_log_header_host *head, int pass) 270b3b94faaSDavid Teigland { 271feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 272b3b94faaSDavid Teigland 273b3b94faaSDavid Teigland if (pass != 0) 274b3b94faaSDavid Teigland return; 275b3b94faaSDavid Teigland 276b3b94faaSDavid Teigland sdp->sd_found_blocks = 0; 277b3b94faaSDavid Teigland sdp->sd_replayed_blocks = 0; 278b3b94faaSDavid Teigland } 279b3b94faaSDavid Teigland 280b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 281b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 282b3b94faaSDavid Teigland int pass) 283b3b94faaSDavid Teigland { 284feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 285feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 2865c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 287b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 288b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 289cd915493SSteven Whitehouse u64 blkno; 290b3b94faaSDavid Teigland int error = 0; 291b3b94faaSDavid Teigland 292b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 293b3b94faaSDavid Teigland return 0; 294b3b94faaSDavid Teigland 295b3b94faaSDavid Teigland gfs2_replay_incr_blk(sdp, &start); 296b3b94faaSDavid Teigland 297b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 298b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 299b3b94faaSDavid Teigland 300b3b94faaSDavid Teigland sdp->sd_found_blocks++; 301b3b94faaSDavid Teigland 302b3b94faaSDavid Teigland if (gfs2_revoke_check(sdp, blkno, start)) 303b3b94faaSDavid Teigland continue; 304b3b94faaSDavid Teigland 305b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 306b3b94faaSDavid Teigland if (error) 307b3b94faaSDavid Teigland return error; 308b3b94faaSDavid Teigland 309b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 310b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 311b3b94faaSDavid Teigland 312b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 313b3b94faaSDavid Teigland error = -EIO; 314b3b94faaSDavid Teigland else 315b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 316b3b94faaSDavid Teigland 317b3b94faaSDavid Teigland brelse(bh_log); 318b3b94faaSDavid Teigland brelse(bh_ip); 319b3b94faaSDavid Teigland 320b3b94faaSDavid Teigland if (error) 321b3b94faaSDavid Teigland break; 322b3b94faaSDavid Teigland 323b3b94faaSDavid Teigland sdp->sd_replayed_blocks++; 324b3b94faaSDavid Teigland } 325b3b94faaSDavid Teigland 326b3b94faaSDavid Teigland return error; 327b3b94faaSDavid Teigland } 328b3b94faaSDavid Teigland 329b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 330b3b94faaSDavid Teigland { 331feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 332feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 333b3b94faaSDavid Teigland 334b3b94faaSDavid Teigland if (error) { 3357276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 336b3b94faaSDavid Teigland return; 337b3b94faaSDavid Teigland } 338b3b94faaSDavid Teigland if (pass != 1) 339b3b94faaSDavid Teigland return; 340b3b94faaSDavid Teigland 3417276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 342b3b94faaSDavid Teigland 343b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 344b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 345b3b94faaSDavid Teigland } 346b3b94faaSDavid Teigland 347b3b94faaSDavid Teigland static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 348b3b94faaSDavid Teigland { 349f42ab085SSteven Whitehouse struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 350f42ab085SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 351b3b94faaSDavid Teigland struct gfs2_trans *tr; 352b3b94faaSDavid Teigland 3535c676f6dSSteven Whitehouse tr = current->journal_info; 354b3b94faaSDavid Teigland tr->tr_touched = 1; 355b3b94faaSDavid Teigland tr->tr_num_revoke++; 356b3b94faaSDavid Teigland sdp->sd_log_num_revoke++; 357f42ab085SSteven Whitehouse atomic_inc(&gl->gl_revokes); 358f42ab085SSteven Whitehouse set_bit(GLF_LFLUSH, &gl->gl_flags); 359b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_revoke); 360b3b94faaSDavid Teigland } 361b3b94faaSDavid Teigland 362b3b94faaSDavid Teigland static void revoke_lo_before_commit(struct gfs2_sbd *sdp) 363b3b94faaSDavid Teigland { 364b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 365b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 366b3b94faaSDavid Teigland struct buffer_head *bh; 367b3b94faaSDavid Teigland unsigned int offset; 368b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 36982e86087SSteven Whitehouse struct gfs2_bufdata *bd; 370b3b94faaSDavid Teigland 371b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 372b3b94faaSDavid Teigland return; 373b3b94faaSDavid Teigland 37416615be1SSteven Whitehouse bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE); 37516615be1SSteven Whitehouse ld = bh_log_desc(bh); 376568f4c96SSteven Whitehouse ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, 377cd915493SSteven Whitehouse sizeof(u64))); 378b3b94faaSDavid Teigland ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); 379b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 380b3b94faaSDavid Teigland 381f42ab085SSteven Whitehouse list_for_each_entry(bd, head, bd_le.le_list) { 382b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 383b3b94faaSDavid Teigland 384cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 385721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 386b3b94faaSDavid Teigland 387b3b94faaSDavid Teigland bh = gfs2_log_get_buf(sdp); 388b3b94faaSDavid Teigland mh = (struct gfs2_meta_header *)bh->b_data; 389b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 390e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 391e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 392b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 393b3b94faaSDavid Teigland } 394b3b94faaSDavid Teigland 39582e86087SSteven Whitehouse *(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno); 396cd915493SSteven Whitehouse offset += sizeof(u64); 397b3b94faaSDavid Teigland } 398b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 399b3b94faaSDavid Teigland 400721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 401b3b94faaSDavid Teigland } 402b3b94faaSDavid Teigland 403f42ab085SSteven Whitehouse static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 404f42ab085SSteven Whitehouse { 405f42ab085SSteven Whitehouse struct list_head *head = &sdp->sd_log_le_revoke; 406f42ab085SSteven Whitehouse struct gfs2_bufdata *bd; 407f42ab085SSteven Whitehouse struct gfs2_glock *gl; 408f42ab085SSteven Whitehouse 409f42ab085SSteven Whitehouse while (!list_empty(head)) { 410f42ab085SSteven Whitehouse bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 411f42ab085SSteven Whitehouse list_del_init(&bd->bd_le.le_list); 412f42ab085SSteven Whitehouse gl = bd->bd_gl; 413f42ab085SSteven Whitehouse atomic_dec(&gl->gl_revokes); 414f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 415f42ab085SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd); 416f42ab085SSteven Whitehouse } 417f42ab085SSteven Whitehouse } 418f42ab085SSteven Whitehouse 419b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 42055167622SAl Viro struct gfs2_log_header_host *head, int pass) 421b3b94faaSDavid Teigland { 422feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 423b3b94faaSDavid Teigland 424b3b94faaSDavid Teigland if (pass != 0) 425b3b94faaSDavid Teigland return; 426b3b94faaSDavid Teigland 427b3b94faaSDavid Teigland sdp->sd_found_revokes = 0; 428b3b94faaSDavid Teigland sdp->sd_replay_tail = head->lh_tail; 429b3b94faaSDavid Teigland } 430b3b94faaSDavid Teigland 431b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 432b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 433b3b94faaSDavid Teigland int pass) 434b3b94faaSDavid Teigland { 435feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 436b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 437b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 438b3b94faaSDavid Teigland struct buffer_head *bh; 439b3b94faaSDavid Teigland unsigned int offset; 440cd915493SSteven Whitehouse u64 blkno; 441b3b94faaSDavid Teigland int first = 1; 442b3b94faaSDavid Teigland int error; 443b3b94faaSDavid Teigland 444b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 445b3b94faaSDavid Teigland return 0; 446b3b94faaSDavid Teigland 447b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 448b3b94faaSDavid Teigland 449b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 450b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 451b3b94faaSDavid Teigland if (error) 452b3b94faaSDavid Teigland return error; 453b3b94faaSDavid Teigland 454b3b94faaSDavid Teigland if (!first) 455b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 456b3b94faaSDavid Teigland 457cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 458b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 459b3b94faaSDavid Teigland 460b3b94faaSDavid Teigland error = gfs2_revoke_add(sdp, blkno, start); 4613ad62e87SBob Peterson if (error < 0) { 4623ad62e87SBob Peterson brelse(bh); 463b3b94faaSDavid Teigland return error; 4643ad62e87SBob Peterson } 465b3b94faaSDavid Teigland else if (error) 466b3b94faaSDavid Teigland sdp->sd_found_revokes++; 467b3b94faaSDavid Teigland 468b3b94faaSDavid Teigland if (!--revokes) 469b3b94faaSDavid Teigland break; 470cd915493SSteven Whitehouse offset += sizeof(u64); 471b3b94faaSDavid Teigland } 472b3b94faaSDavid Teigland 473b3b94faaSDavid Teigland brelse(bh); 474b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 475b3b94faaSDavid Teigland first = 0; 476b3b94faaSDavid Teigland } 477b3b94faaSDavid Teigland 478b3b94faaSDavid Teigland return 0; 479b3b94faaSDavid Teigland } 480b3b94faaSDavid Teigland 481b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 482b3b94faaSDavid Teigland { 483feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 484b3b94faaSDavid Teigland 485b3b94faaSDavid Teigland if (error) { 486b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 487b3b94faaSDavid Teigland return; 488b3b94faaSDavid Teigland } 489b3b94faaSDavid Teigland if (pass != 1) 490b3b94faaSDavid Teigland return; 491b3b94faaSDavid Teigland 492b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 493b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_found_revokes); 494b3b94faaSDavid Teigland 495b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 496b3b94faaSDavid Teigland } 497b3b94faaSDavid Teigland 49818ec7d5cSSteven Whitehouse /** 49918ec7d5cSSteven Whitehouse * databuf_lo_add - Add a databuf to the transaction. 50018ec7d5cSSteven Whitehouse * 50118ec7d5cSSteven Whitehouse * This is used in two distinct cases: 50218ec7d5cSSteven Whitehouse * i) In ordered write mode 50318ec7d5cSSteven Whitehouse * We put the data buffer on a list so that we can ensure that its 50418ec7d5cSSteven Whitehouse * synced to disk at the right time 50518ec7d5cSSteven Whitehouse * ii) In journaled data mode 50618ec7d5cSSteven Whitehouse * We need to journal the data block in the same way as metadata in 50718ec7d5cSSteven Whitehouse * the functions above. The difference is that here we have a tag 50818ec7d5cSSteven Whitehouse * which is two __be64's being the block number (as per meta data) 50918ec7d5cSSteven Whitehouse * and a flag which says whether the data block needs escaping or 51018ec7d5cSSteven Whitehouse * not. This means we need a new log entry for each 251 or so data 51118ec7d5cSSteven Whitehouse * blocks, which isn't an enormous overhead but twice as much as 51218ec7d5cSSteven Whitehouse * for normal metadata blocks. 51318ec7d5cSSteven Whitehouse */ 514b3b94faaSDavid Teigland static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 515b3b94faaSDavid Teigland { 51618ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 5175c676f6dSSteven Whitehouse struct gfs2_trans *tr = current->journal_info; 51818ec7d5cSSteven Whitehouse struct address_space *mapping = bd->bd_bh->b_page->mapping; 519feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(mapping->host); 520b3b94faaSDavid Teigland 5219b9107a5SSteven Whitehouse lock_buffer(bd->bd_bh); 5228bd95727SSteven Whitehouse gfs2_log_lock(sdp); 5239ff8ec32SSteven Whitehouse if (tr) { 5249b9107a5SSteven Whitehouse if (!list_empty(&bd->bd_list_tr)) 5259b9107a5SSteven Whitehouse goto out; 52618ec7d5cSSteven Whitehouse tr->tr_touched = 1; 527773ed1a0SRobert Peterson if (gfs2_is_jdata(ip)) { 52818ec7d5cSSteven Whitehouse tr->tr_num_buf++; 52918ec7d5cSSteven Whitehouse list_add(&bd->bd_list_tr, &tr->tr_list_buf); 530773ed1a0SRobert Peterson } 5319ff8ec32SSteven Whitehouse } 532ddf4b426SBenjamin Marzinski if (!list_empty(&le->le_list)) 5339b9107a5SSteven Whitehouse goto out; 5342332c443SRobert Peterson 5352bcd610dSSteven Whitehouse set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 5362bcd610dSSteven Whitehouse set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); 5372332c443SRobert Peterson if (gfs2_is_jdata(ip)) { 5382332c443SRobert Peterson gfs2_pin(sdp, bd->bd_bh); 5392332c443SRobert Peterson tr->tr_num_databuf_new++; 540bdcb8856SBob Peterson sdp->sd_log_num_databuf++; 541e5884636SDave Chinner list_add_tail(&le->le_list, &sdp->sd_log_le_databuf); 542d7b616e2SSteven Whitehouse } else { 543e5884636SDave Chinner list_add_tail(&le->le_list, &sdp->sd_log_le_ordered); 544d7b616e2SSteven Whitehouse } 5459b9107a5SSteven Whitehouse out: 546b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 5479b9107a5SSteven Whitehouse unlock_buffer(bd->bd_bh); 548b3b94faaSDavid Teigland } 549b3b94faaSDavid Teigland 55016615be1SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 55118ec7d5cSSteven Whitehouse { 55218ec7d5cSSteven Whitehouse void *kaddr; 55318ec7d5cSSteven Whitehouse __be32 *ptr; 55418ec7d5cSSteven Whitehouse 55516615be1SSteven Whitehouse clear_buffer_escaped(bh); 55616615be1SSteven Whitehouse kaddr = kmap_atomic(bh->b_page, KM_USER0); 55718ec7d5cSSteven Whitehouse ptr = kaddr + bh_offset(bh); 55818ec7d5cSSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 55916615be1SSteven Whitehouse set_buffer_escaped(bh); 560c312c4fdSRussell Cattelan kunmap_atomic(kaddr, KM_USER0); 56116615be1SSteven Whitehouse } 56218ec7d5cSSteven Whitehouse 56316615be1SSteven Whitehouse static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh, 56416615be1SSteven Whitehouse struct list_head *list, struct list_head *done, 56516615be1SSteven Whitehouse unsigned int n) 56616615be1SSteven Whitehouse { 56716615be1SSteven Whitehouse struct buffer_head *bh1; 56816615be1SSteven Whitehouse struct gfs2_log_descriptor *ld; 56916615be1SSteven Whitehouse struct gfs2_bufdata *bd; 57016615be1SSteven Whitehouse __be64 *ptr; 57116615be1SSteven Whitehouse 57216615be1SSteven Whitehouse if (!bh) 57316615be1SSteven Whitehouse return; 57416615be1SSteven Whitehouse 57516615be1SSteven Whitehouse ld = bh_log_desc(bh); 57616615be1SSteven Whitehouse ld->ld_length = cpu_to_be32(n + 1); 57716615be1SSteven Whitehouse ld->ld_data1 = cpu_to_be32(n); 57816615be1SSteven Whitehouse 57916615be1SSteven Whitehouse ptr = bh_log_ptr(bh); 58016615be1SSteven Whitehouse 58116615be1SSteven Whitehouse get_bh(bh); 582721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 58316615be1SSteven Whitehouse gfs2_log_lock(sdp); 58416615be1SSteven Whitehouse while(!list_empty(list)) { 58516615be1SSteven Whitehouse bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list); 58616615be1SSteven Whitehouse list_move_tail(&bd->bd_le.le_list, done); 58716615be1SSteven Whitehouse get_bh(bd->bd_bh); 58816615be1SSteven Whitehouse while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) { 58916615be1SSteven Whitehouse gfs2_log_incr_head(sdp); 59016615be1SSteven Whitehouse ptr += 2; 59116615be1SSteven Whitehouse } 59216615be1SSteven Whitehouse gfs2_log_unlock(sdp); 59316615be1SSteven Whitehouse lock_buffer(bd->bd_bh); 59416615be1SSteven Whitehouse if (buffer_escaped(bd->bd_bh)) { 59516615be1SSteven Whitehouse void *kaddr; 59616615be1SSteven Whitehouse bh1 = gfs2_log_get_buf(sdp); 59716615be1SSteven Whitehouse kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0); 59816615be1SSteven Whitehouse memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh), 59916615be1SSteven Whitehouse bh1->b_size); 60016615be1SSteven Whitehouse kunmap_atomic(kaddr, KM_USER0); 60116615be1SSteven Whitehouse *(__be32 *)bh1->b_data = 0; 60216615be1SSteven Whitehouse clear_buffer_escaped(bd->bd_bh); 60316615be1SSteven Whitehouse unlock_buffer(bd->bd_bh); 60416615be1SSteven Whitehouse brelse(bd->bd_bh); 60516615be1SSteven Whitehouse } else { 60616615be1SSteven Whitehouse bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh); 60716615be1SSteven Whitehouse } 608721a9602SJens Axboe submit_bh(WRITE_SYNC, bh1); 60916615be1SSteven Whitehouse gfs2_log_lock(sdp); 61016615be1SSteven Whitehouse ptr += 2; 61116615be1SSteven Whitehouse } 61216615be1SSteven Whitehouse gfs2_log_unlock(sdp); 61316615be1SSteven Whitehouse brelse(bh); 61418ec7d5cSSteven Whitehouse } 61518ec7d5cSSteven Whitehouse 61618ec7d5cSSteven Whitehouse /** 61718ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 61818ec7d5cSSteven Whitehouse * 61918ec7d5cSSteven Whitehouse */ 620d7b616e2SSteven Whitehouse 621b3b94faaSDavid Teigland static void databuf_lo_before_commit(struct gfs2_sbd *sdp) 622b3b94faaSDavid Teigland { 62316615be1SSteven Whitehouse struct gfs2_bufdata *bd = NULL; 62416615be1SSteven Whitehouse struct buffer_head *bh = NULL; 62516615be1SSteven Whitehouse unsigned int n = 0; 62616615be1SSteven Whitehouse __be64 *ptr = NULL, *end = NULL; 62716615be1SSteven Whitehouse LIST_HEAD(processed); 62816615be1SSteven Whitehouse LIST_HEAD(in_progress); 629b3b94faaSDavid Teigland 630f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 63116615be1SSteven Whitehouse while (!list_empty(&sdp->sd_log_le_databuf)) { 63216615be1SSteven Whitehouse if (ptr == end) { 633f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 63416615be1SSteven Whitehouse gfs2_write_blocks(sdp, bh, &in_progress, &processed, n); 635d7b616e2SSteven Whitehouse n = 0; 63616615be1SSteven Whitehouse bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA); 63716615be1SSteven Whitehouse ptr = bh_log_ptr(bh); 63816615be1SSteven Whitehouse end = bh_ptr_end(bh) - 1; 639f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 64018ec7d5cSSteven Whitehouse continue; 64116615be1SSteven Whitehouse } 64216615be1SSteven Whitehouse bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list); 64316615be1SSteven Whitehouse list_move_tail(&bd->bd_le.le_list, &in_progress); 64416615be1SSteven Whitehouse gfs2_check_magic(bd->bd_bh); 64516615be1SSteven Whitehouse *ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr); 64616615be1SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0); 64716615be1SSteven Whitehouse n++; 64816615be1SSteven Whitehouse } 649f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 65016615be1SSteven Whitehouse gfs2_write_blocks(sdp, bh, &in_progress, &processed, n); 651f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 65216615be1SSteven Whitehouse list_splice(&processed, &sdp->sd_log_le_databuf); 653f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 654b3b94faaSDavid Teigland } 655b3b94faaSDavid Teigland 65618ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 65718ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 65818ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 65918ec7d5cSSteven Whitehouse { 660feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 661feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 6625c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 66318ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 66418ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 665cd915493SSteven Whitehouse u64 blkno; 666cd915493SSteven Whitehouse u64 esc; 66718ec7d5cSSteven Whitehouse int error = 0; 66818ec7d5cSSteven Whitehouse 66918ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 67018ec7d5cSSteven Whitehouse return 0; 67118ec7d5cSSteven Whitehouse 67218ec7d5cSSteven Whitehouse gfs2_replay_incr_blk(sdp, &start); 67318ec7d5cSSteven Whitehouse for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 67418ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 67518ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 67618ec7d5cSSteven Whitehouse 67718ec7d5cSSteven Whitehouse sdp->sd_found_blocks++; 67818ec7d5cSSteven Whitehouse 67918ec7d5cSSteven Whitehouse if (gfs2_revoke_check(sdp, blkno, start)) 68018ec7d5cSSteven Whitehouse continue; 68118ec7d5cSSteven Whitehouse 68218ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 68318ec7d5cSSteven Whitehouse if (error) 68418ec7d5cSSteven Whitehouse return error; 68518ec7d5cSSteven Whitehouse 68618ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 68718ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 68818ec7d5cSSteven Whitehouse 68918ec7d5cSSteven Whitehouse /* Unescape */ 69018ec7d5cSSteven Whitehouse if (esc) { 69118ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 69218ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 69318ec7d5cSSteven Whitehouse } 69418ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 69518ec7d5cSSteven Whitehouse 69618ec7d5cSSteven Whitehouse brelse(bh_log); 69718ec7d5cSSteven Whitehouse brelse(bh_ip); 69818ec7d5cSSteven Whitehouse if (error) 69918ec7d5cSSteven Whitehouse break; 70018ec7d5cSSteven Whitehouse 70118ec7d5cSSteven Whitehouse sdp->sd_replayed_blocks++; 70218ec7d5cSSteven Whitehouse } 70318ec7d5cSSteven Whitehouse 70418ec7d5cSSteven Whitehouse return error; 70518ec7d5cSSteven Whitehouse } 70618ec7d5cSSteven Whitehouse 70718ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 70818ec7d5cSSteven Whitehouse 70918ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 71018ec7d5cSSteven Whitehouse { 711feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 712feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 71318ec7d5cSSteven Whitehouse 71418ec7d5cSSteven Whitehouse if (error) { 7157276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 71618ec7d5cSSteven Whitehouse return; 71718ec7d5cSSteven Whitehouse } 71818ec7d5cSSteven Whitehouse if (pass != 1) 71918ec7d5cSSteven Whitehouse return; 72018ec7d5cSSteven Whitehouse 72118ec7d5cSSteven Whitehouse /* data sync? */ 7227276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 72318ec7d5cSSteven Whitehouse 72418ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 72518ec7d5cSSteven Whitehouse jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 72618ec7d5cSSteven Whitehouse } 72718ec7d5cSSteven Whitehouse 72818ec7d5cSSteven Whitehouse static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 72918ec7d5cSSteven Whitehouse { 73018ec7d5cSSteven Whitehouse struct list_head *head = &sdp->sd_log_le_databuf; 73118ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 73218ec7d5cSSteven Whitehouse 73318ec7d5cSSteven Whitehouse while (!list_empty(head)) { 73418ec7d5cSSteven Whitehouse bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 735b8e1aabfSSteven Whitehouse list_del_init(&bd->bd_le.le_list); 73618ec7d5cSSteven Whitehouse sdp->sd_log_num_databuf--; 73718ec7d5cSSteven Whitehouse gfs2_unpin(sdp, bd->bd_bh, ai); 73818ec7d5cSSteven Whitehouse } 73918ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); 74018ec7d5cSSteven Whitehouse } 74118ec7d5cSSteven Whitehouse 74218ec7d5cSSteven Whitehouse 743b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 744b3b94faaSDavid Teigland .lo_add = buf_lo_add, 745b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 746b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 747b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 748b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 749b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 750ea67eedbSSteven Whitehouse .lo_name = "buf", 751b3b94faaSDavid Teigland }; 752b3b94faaSDavid Teigland 753b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 754b3b94faaSDavid Teigland .lo_add = revoke_lo_add, 755b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 756f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 757b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 758b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 759b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 760ea67eedbSSteven Whitehouse .lo_name = "revoke", 761b3b94faaSDavid Teigland }; 762b3b94faaSDavid Teigland 763b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_rg_lops = { 764ea67eedbSSteven Whitehouse .lo_name = "rg", 765b3b94faaSDavid Teigland }; 766b3b94faaSDavid Teigland 767b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 768b3b94faaSDavid Teigland .lo_add = databuf_lo_add, 769b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 77018ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 77118ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 77218ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 773ea67eedbSSteven Whitehouse .lo_name = "databuf", 774b3b94faaSDavid Teigland }; 775b3b94faaSDavid Teigland 776b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 777b3b94faaSDavid Teigland &gfs2_databuf_lops, 77816615be1SSteven Whitehouse &gfs2_buf_lops, 77916615be1SSteven Whitehouse &gfs2_rg_lops, 78016615be1SSteven Whitehouse &gfs2_revoke_lops, 781ea67eedbSSteven Whitehouse NULL, 782b3b94faaSDavid Teigland }; 783b3b94faaSDavid Teigland 784