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> 1575ca61c1SSteven Whitehouse #include <linux/mempool.h> 165c676f6dSSteven Whitehouse #include <linux/gfs2_ondisk.h> 17c969f58cSSteven Whitehouse #include <linux/bio.h> 18c969f58cSSteven Whitehouse #include <linux/fs.h> 19b3b94faaSDavid Teigland 20b3b94faaSDavid Teigland #include "gfs2.h" 215c676f6dSSteven Whitehouse #include "incore.h" 222332c443SRobert Peterson #include "inode.h" 23b3b94faaSDavid Teigland #include "glock.h" 24b3b94faaSDavid Teigland #include "log.h" 25b3b94faaSDavid Teigland #include "lops.h" 26b3b94faaSDavid Teigland #include "meta_io.h" 27b3b94faaSDavid Teigland #include "recovery.h" 28b3b94faaSDavid Teigland #include "rgrp.h" 29b3b94faaSDavid Teigland #include "trans.h" 305c676f6dSSteven Whitehouse #include "util.h" 3163997775SSteven Whitehouse #include "trace_gfs2.h" 32b3b94faaSDavid Teigland 339b9107a5SSteven Whitehouse /** 349b9107a5SSteven Whitehouse * gfs2_pin - Pin a buffer in memory 359b9107a5SSteven Whitehouse * @sdp: The superblock 369b9107a5SSteven Whitehouse * @bh: The buffer to be pinned 379b9107a5SSteven Whitehouse * 389b9107a5SSteven Whitehouse * The log lock must be held when calling this function 399b9107a5SSteven Whitehouse */ 409b9107a5SSteven Whitehouse static void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) 419b9107a5SSteven Whitehouse { 429b9107a5SSteven Whitehouse struct gfs2_bufdata *bd; 439b9107a5SSteven Whitehouse 4429687a2aSSteven Whitehouse BUG_ON(!current->journal_info); 459b9107a5SSteven Whitehouse 469b9107a5SSteven Whitehouse clear_buffer_dirty(bh); 479b9107a5SSteven Whitehouse if (test_set_buffer_pinned(bh)) 489b9107a5SSteven Whitehouse gfs2_assert_withdraw(sdp, 0); 499b9107a5SSteven Whitehouse if (!buffer_uptodate(bh)) 509b9107a5SSteven Whitehouse gfs2_io_error_bh(sdp, bh); 519b9107a5SSteven Whitehouse bd = bh->b_private; 529b9107a5SSteven Whitehouse /* If this buffer is in the AIL and it has already been written 539b9107a5SSteven Whitehouse * to in-place disk block, remove it from the AIL. 549b9107a5SSteven Whitehouse */ 55c618e87aSSteven Whitehouse spin_lock(&sdp->sd_ail_lock); 569b9107a5SSteven Whitehouse if (bd->bd_ail) 579b9107a5SSteven Whitehouse list_move(&bd->bd_ail_st_list, &bd->bd_ail->ai_ail2_list); 58c618e87aSSteven Whitehouse spin_unlock(&sdp->sd_ail_lock); 599b9107a5SSteven Whitehouse get_bh(bh); 605e687eacSBenjamin Marzinski atomic_inc(&sdp->sd_log_pinned); 6163997775SSteven Whitehouse trace_gfs2_pin(bd, 1); 629b9107a5SSteven Whitehouse } 639b9107a5SSteven Whitehouse 647c9ca621SBob Peterson static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) 657c9ca621SBob Peterson { 667c9ca621SBob Peterson return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; 677c9ca621SBob Peterson } 687c9ca621SBob Peterson 697c9ca621SBob Peterson static void maybe_release_space(struct gfs2_bufdata *bd) 707c9ca621SBob Peterson { 717c9ca621SBob Peterson struct gfs2_glock *gl = bd->bd_gl; 727c9ca621SBob Peterson struct gfs2_sbd *sdp = gl->gl_sbd; 737c9ca621SBob Peterson struct gfs2_rgrpd *rgd = gl->gl_object; 747c9ca621SBob Peterson unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; 757c9ca621SBob Peterson struct gfs2_bitmap *bi = rgd->rd_bits + index; 767c9ca621SBob Peterson 777c9ca621SBob Peterson if (bi->bi_clone == 0) 787c9ca621SBob Peterson return; 797c9ca621SBob Peterson if (sdp->sd_args.ar_discard) 8066fc061bSSteven Whitehouse gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); 817c9ca621SBob Peterson memcpy(bi->bi_clone + bi->bi_offset, 827c9ca621SBob Peterson bd->bd_bh->b_data + bi->bi_offset, bi->bi_len); 837c9ca621SBob Peterson clear_bit(GBF_FULL, &bi->bi_flags); 847c9ca621SBob Peterson rgd->rd_free_clone = rgd->rd_free; 857c9ca621SBob Peterson } 867c9ca621SBob Peterson 879b9107a5SSteven Whitehouse /** 889b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 899b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 909b9107a5SSteven Whitehouse * @bh: The buffer to unpin 919b9107a5SSteven Whitehouse * @ai: 9229687a2aSSteven Whitehouse * @flags: The inode dirty flags 939b9107a5SSteven Whitehouse * 949b9107a5SSteven Whitehouse */ 959b9107a5SSteven Whitehouse 969b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 979b9107a5SSteven Whitehouse struct gfs2_ail *ai) 989b9107a5SSteven Whitehouse { 999b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1009b9107a5SSteven Whitehouse 10129687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10229687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1039b9107a5SSteven Whitehouse 1049b9107a5SSteven Whitehouse lock_buffer(bh); 1059b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1069b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1079b9107a5SSteven Whitehouse 1087c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1097c9ca621SBob Peterson maybe_release_space(bd); 1107c9ca621SBob Peterson 111d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 1129b9107a5SSteven Whitehouse if (bd->bd_ail) { 1139b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1149b9107a5SSteven Whitehouse brelse(bh); 1159b9107a5SSteven Whitehouse } else { 1169b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1179b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1189b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1199b9107a5SSteven Whitehouse } 1209b9107a5SSteven Whitehouse bd->bd_ail = ai; 1219b9107a5SSteven Whitehouse list_add(&bd->bd_ail_st_list, &ai->ai_ail1_list); 122d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 123d6a079e8SDave Chinner 12429687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 12563997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1269b9107a5SSteven Whitehouse unlock_buffer(bh); 1275e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1289b9107a5SSteven Whitehouse } 1299b9107a5SSteven Whitehouse 13016615be1SSteven Whitehouse 13116615be1SSteven Whitehouse static inline struct gfs2_log_descriptor *bh_log_desc(struct buffer_head *bh) 13216615be1SSteven Whitehouse { 13316615be1SSteven Whitehouse return (struct gfs2_log_descriptor *)bh->b_data; 13416615be1SSteven Whitehouse } 13516615be1SSteven Whitehouse 13616615be1SSteven Whitehouse static inline __be64 *bh_log_ptr(struct buffer_head *bh) 13716615be1SSteven Whitehouse { 13816615be1SSteven Whitehouse struct gfs2_log_descriptor *ld = bh_log_desc(bh); 13916615be1SSteven Whitehouse return (__force __be64 *)(ld + 1); 14016615be1SSteven Whitehouse } 14116615be1SSteven Whitehouse 14216615be1SSteven Whitehouse static inline __be64 *bh_ptr_end(struct buffer_head *bh) 14316615be1SSteven Whitehouse { 14416615be1SSteven Whitehouse return (__force __be64 *)(bh->b_data + bh->b_size); 14516615be1SSteven Whitehouse } 14616615be1SSteven Whitehouse 14747ac5537SSteven Whitehouse /** 14847ac5537SSteven Whitehouse * gfs2_log_write_endio - End of I/O for a log buffer 14947ac5537SSteven Whitehouse * @bh: The buffer head 15047ac5537SSteven Whitehouse * @uptodate: I/O Status 15147ac5537SSteven Whitehouse * 15247ac5537SSteven Whitehouse */ 15347ac5537SSteven Whitehouse 15447ac5537SSteven Whitehouse static void gfs2_log_write_endio(struct buffer_head *bh, int uptodate) 15547ac5537SSteven Whitehouse { 15647ac5537SSteven Whitehouse struct gfs2_sbd *sdp = bh->b_private; 15747ac5537SSteven Whitehouse bh->b_private = NULL; 15847ac5537SSteven Whitehouse 15947ac5537SSteven Whitehouse end_buffer_write_sync(bh, uptodate); 16047ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 16147ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 16247ac5537SSteven Whitehouse } 16347ac5537SSteven Whitehouse 16447ac5537SSteven Whitehouse /** 16547ac5537SSteven Whitehouse * gfs2_log_get_buf - Get and initialize a buffer to use for log control data 16647ac5537SSteven Whitehouse * @sdp: The GFS2 superblock 16747ac5537SSteven Whitehouse * 16847ac5537SSteven Whitehouse * tReturns: the buffer_head 16947ac5537SSteven Whitehouse */ 17047ac5537SSteven Whitehouse 17147ac5537SSteven Whitehouse static struct buffer_head *gfs2_log_get_buf(struct gfs2_sbd *sdp) 17247ac5537SSteven Whitehouse { 17347ac5537SSteven Whitehouse u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head); 17447ac5537SSteven Whitehouse struct buffer_head *bh; 17547ac5537SSteven Whitehouse 17647ac5537SSteven Whitehouse bh = sb_getblk(sdp->sd_vfs, blkno); 17747ac5537SSteven Whitehouse lock_buffer(bh); 17847ac5537SSteven Whitehouse memset(bh->b_data, 0, bh->b_size); 17947ac5537SSteven Whitehouse set_buffer_uptodate(bh); 18047ac5537SSteven Whitehouse clear_buffer_dirty(bh); 18147ac5537SSteven Whitehouse gfs2_log_incr_head(sdp); 18247ac5537SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 18347ac5537SSteven Whitehouse bh->b_private = sdp; 18447ac5537SSteven Whitehouse bh->b_end_io = gfs2_log_write_endio; 18547ac5537SSteven Whitehouse 18647ac5537SSteven Whitehouse return bh; 18747ac5537SSteven Whitehouse } 18847ac5537SSteven Whitehouse 18947ac5537SSteven Whitehouse /** 19047ac5537SSteven Whitehouse * gfs2_fake_write_endio - 19147ac5537SSteven Whitehouse * @bh: The buffer head 19247ac5537SSteven Whitehouse * @uptodate: The I/O Status 19347ac5537SSteven Whitehouse * 19447ac5537SSteven Whitehouse */ 19547ac5537SSteven Whitehouse 19647ac5537SSteven Whitehouse static void gfs2_fake_write_endio(struct buffer_head *bh, int uptodate) 19747ac5537SSteven Whitehouse { 19847ac5537SSteven Whitehouse struct buffer_head *real_bh = bh->b_private; 19947ac5537SSteven Whitehouse struct gfs2_bufdata *bd = real_bh->b_private; 20047ac5537SSteven Whitehouse struct gfs2_sbd *sdp = bd->bd_gl->gl_sbd; 20147ac5537SSteven Whitehouse 20247ac5537SSteven Whitehouse end_buffer_write_sync(bh, uptodate); 20375ca61c1SSteven Whitehouse mempool_free(bh, gfs2_bh_pool); 20447ac5537SSteven Whitehouse unlock_buffer(real_bh); 20547ac5537SSteven Whitehouse brelse(real_bh); 20647ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 20747ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 20847ac5537SSteven Whitehouse } 20947ac5537SSteven Whitehouse 21047ac5537SSteven Whitehouse /** 21147ac5537SSteven Whitehouse * gfs2_log_fake_buf - Build a fake buffer head to write metadata buffer to log 21247ac5537SSteven Whitehouse * @sdp: the filesystem 21347ac5537SSteven Whitehouse * @data: the data the buffer_head should point to 21447ac5537SSteven Whitehouse * 21547ac5537SSteven Whitehouse * Returns: the log buffer descriptor 21647ac5537SSteven Whitehouse */ 21747ac5537SSteven Whitehouse 21847ac5537SSteven Whitehouse static struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp, 21947ac5537SSteven Whitehouse struct buffer_head *real) 22047ac5537SSteven Whitehouse { 22147ac5537SSteven Whitehouse u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head); 22247ac5537SSteven Whitehouse struct buffer_head *bh; 22347ac5537SSteven Whitehouse 22475ca61c1SSteven Whitehouse bh = mempool_alloc(gfs2_bh_pool, GFP_NOFS); 22547ac5537SSteven Whitehouse atomic_set(&bh->b_count, 1); 22647ac5537SSteven Whitehouse bh->b_state = (1 << BH_Mapped) | (1 << BH_Uptodate) | (1 << BH_Lock); 22747ac5537SSteven Whitehouse set_bh_page(bh, real->b_page, bh_offset(real)); 22847ac5537SSteven Whitehouse bh->b_blocknr = blkno; 22947ac5537SSteven Whitehouse bh->b_size = sdp->sd_sb.sb_bsize; 23047ac5537SSteven Whitehouse bh->b_bdev = sdp->sd_vfs->s_bdev; 23147ac5537SSteven Whitehouse bh->b_private = real; 23247ac5537SSteven Whitehouse bh->b_end_io = gfs2_fake_write_endio; 23347ac5537SSteven Whitehouse 23447ac5537SSteven Whitehouse gfs2_log_incr_head(sdp); 23547ac5537SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 23647ac5537SSteven Whitehouse 23747ac5537SSteven Whitehouse return bh; 23847ac5537SSteven Whitehouse } 23916615be1SSteven Whitehouse 24016615be1SSteven Whitehouse static struct buffer_head *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type) 24116615be1SSteven Whitehouse { 24216615be1SSteven Whitehouse struct buffer_head *bh = gfs2_log_get_buf(sdp); 24316615be1SSteven Whitehouse struct gfs2_log_descriptor *ld = bh_log_desc(bh); 24416615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 24516615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 24616615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 24716615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 24816615be1SSteven Whitehouse ld->ld_length = 0; 24916615be1SSteven Whitehouse ld->ld_data1 = 0; 25016615be1SSteven Whitehouse ld->ld_data2 = 0; 25116615be1SSteven Whitehouse memset(ld->ld_reserved, 0, sizeof(ld->ld_reserved)); 25216615be1SSteven Whitehouse return bh; 25316615be1SSteven Whitehouse } 25416615be1SSteven Whitehouse 255b3b94faaSDavid Teigland static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 256b3b94faaSDavid Teigland { 257b3b94faaSDavid Teigland struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 2580ab7d13fSSteven Whitehouse struct gfs2_meta_header *mh; 259b3b94faaSDavid Teigland struct gfs2_trans *tr; 260b3b94faaSDavid Teigland 2619b9107a5SSteven Whitehouse lock_buffer(bd->bd_bh); 2628bd95727SSteven Whitehouse gfs2_log_lock(sdp); 2639b9107a5SSteven Whitehouse if (!list_empty(&bd->bd_list_tr)) 2649b9107a5SSteven Whitehouse goto out; 2655c676f6dSSteven Whitehouse tr = current->journal_info; 266b3b94faaSDavid Teigland tr->tr_touched = 1; 267b3b94faaSDavid Teigland tr->tr_num_buf++; 268b3b94faaSDavid Teigland list_add(&bd->bd_list_tr, &tr->tr_list_buf); 269b3b94faaSDavid Teigland if (!list_empty(&le->le_list)) 2709b9107a5SSteven Whitehouse goto out; 2712bcd610dSSteven Whitehouse set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 2722bcd610dSSteven Whitehouse set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); 273b3b94faaSDavid Teigland gfs2_meta_check(sdp, bd->bd_bh); 274a98ab220SSteven Whitehouse gfs2_pin(sdp, bd->bd_bh); 2750ab7d13fSSteven Whitehouse mh = (struct gfs2_meta_header *)bd->bd_bh->b_data; 2760ab7d13fSSteven Whitehouse mh->__pad0 = cpu_to_be64(0); 2770ab7d13fSSteven Whitehouse mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid); 278b3b94faaSDavid Teigland sdp->sd_log_num_buf++; 279b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_buf); 280b3b94faaSDavid Teigland tr->tr_num_buf_new++; 2819b9107a5SSteven Whitehouse out: 2829b9107a5SSteven Whitehouse gfs2_log_unlock(sdp); 2839b9107a5SSteven Whitehouse unlock_buffer(bd->bd_bh); 284b3b94faaSDavid Teigland } 285b3b94faaSDavid Teigland 286b3b94faaSDavid Teigland static void buf_lo_before_commit(struct gfs2_sbd *sdp) 287b3b94faaSDavid Teigland { 288b3b94faaSDavid Teigland struct buffer_head *bh; 289b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 290b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 291905d2aefSBob Peterson unsigned int total; 292b3b94faaSDavid Teigland unsigned int limit; 293b3b94faaSDavid Teigland unsigned int num; 294b3b94faaSDavid Teigland unsigned n; 295b3b94faaSDavid Teigland __be64 *ptr; 296b3b94faaSDavid Teigland 2972332c443SRobert Peterson limit = buf_limit(sdp); 298b3b94faaSDavid Teigland /* for 4k blocks, limit = 503 */ 299b3b94faaSDavid Teigland 300905d2aefSBob Peterson gfs2_log_lock(sdp); 301905d2aefSBob Peterson total = sdp->sd_log_num_buf; 302b3b94faaSDavid Teigland bd1 = bd2 = list_prepare_entry(bd1, &sdp->sd_log_le_buf, bd_le.le_list); 303b3b94faaSDavid Teigland while(total) { 304b3b94faaSDavid Teigland num = total; 305b3b94faaSDavid Teigland if (total > limit) 306b3b94faaSDavid Teigland num = limit; 307905d2aefSBob Peterson gfs2_log_unlock(sdp); 30816615be1SSteven Whitehouse bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_METADATA); 309905d2aefSBob Peterson gfs2_log_lock(sdp); 31016615be1SSteven Whitehouse ld = bh_log_desc(bh); 31116615be1SSteven Whitehouse ptr = bh_log_ptr(bh); 312b3b94faaSDavid Teigland ld->ld_length = cpu_to_be32(num + 1); 313b3b94faaSDavid Teigland ld->ld_data1 = cpu_to_be32(num); 314b3b94faaSDavid Teigland 315b3b94faaSDavid Teigland n = 0; 316568f4c96SSteven Whitehouse list_for_each_entry_continue(bd1, &sdp->sd_log_le_buf, 317568f4c96SSteven Whitehouse bd_le.le_list) { 318b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 319b3b94faaSDavid Teigland if (++n >= num) 320b3b94faaSDavid Teigland break; 321b3b94faaSDavid Teigland } 322b3b94faaSDavid Teigland 323905d2aefSBob Peterson gfs2_log_unlock(sdp); 324721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 325905d2aefSBob Peterson gfs2_log_lock(sdp); 326b3b94faaSDavid Teigland 327b3b94faaSDavid Teigland n = 0; 328568f4c96SSteven Whitehouse list_for_each_entry_continue(bd2, &sdp->sd_log_le_buf, 329568f4c96SSteven Whitehouse bd_le.le_list) { 33016615be1SSteven Whitehouse get_bh(bd2->bd_bh); 331905d2aefSBob Peterson gfs2_log_unlock(sdp); 33216615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 333b3b94faaSDavid Teigland bh = gfs2_log_fake_buf(sdp, bd2->bd_bh); 334721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 335905d2aefSBob Peterson gfs2_log_lock(sdp); 336b3b94faaSDavid Teigland if (++n >= num) 337b3b94faaSDavid Teigland break; 338b3b94faaSDavid Teigland } 339b3b94faaSDavid Teigland 340905d2aefSBob Peterson BUG_ON(total < num); 341b3b94faaSDavid Teigland total -= num; 342b3b94faaSDavid Teigland } 343905d2aefSBob Peterson gfs2_log_unlock(sdp); 344b3b94faaSDavid Teigland } 345b3b94faaSDavid Teigland 346b3b94faaSDavid Teigland static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 347b3b94faaSDavid Teigland { 348b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_buf; 349b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 350b3b94faaSDavid Teigland 351b3b94faaSDavid Teigland while (!list_empty(head)) { 352b3b94faaSDavid Teigland bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 353b3b94faaSDavid Teigland list_del_init(&bd->bd_le.le_list); 354b3b94faaSDavid Teigland sdp->sd_log_num_buf--; 355b3b94faaSDavid Teigland 356a98ab220SSteven Whitehouse gfs2_unpin(sdp, bd->bd_bh, ai); 357b3b94faaSDavid Teigland } 358b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); 359b3b94faaSDavid Teigland } 360b3b94faaSDavid Teigland 361b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 36255167622SAl Viro struct gfs2_log_header_host *head, int pass) 363b3b94faaSDavid Teigland { 364feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 365b3b94faaSDavid Teigland 366b3b94faaSDavid Teigland if (pass != 0) 367b3b94faaSDavid Teigland return; 368b3b94faaSDavid Teigland 369b3b94faaSDavid Teigland sdp->sd_found_blocks = 0; 370b3b94faaSDavid Teigland sdp->sd_replayed_blocks = 0; 371b3b94faaSDavid Teigland } 372b3b94faaSDavid Teigland 373b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 374b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 375b3b94faaSDavid Teigland int pass) 376b3b94faaSDavid Teigland { 377feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 378feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 3795c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 380b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 381b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 382cd915493SSteven Whitehouse u64 blkno; 383b3b94faaSDavid Teigland int error = 0; 384b3b94faaSDavid Teigland 385b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 386b3b94faaSDavid Teigland return 0; 387b3b94faaSDavid Teigland 388b3b94faaSDavid Teigland gfs2_replay_incr_blk(sdp, &start); 389b3b94faaSDavid Teigland 390b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 391b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 392b3b94faaSDavid Teigland 393b3b94faaSDavid Teigland sdp->sd_found_blocks++; 394b3b94faaSDavid Teigland 395b3b94faaSDavid Teigland if (gfs2_revoke_check(sdp, blkno, start)) 396b3b94faaSDavid Teigland continue; 397b3b94faaSDavid Teigland 398b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 399b3b94faaSDavid Teigland if (error) 400b3b94faaSDavid Teigland return error; 401b3b94faaSDavid Teigland 402b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 403b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 404b3b94faaSDavid Teigland 405b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 406b3b94faaSDavid Teigland error = -EIO; 407b3b94faaSDavid Teigland else 408b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 409b3b94faaSDavid Teigland 410b3b94faaSDavid Teigland brelse(bh_log); 411b3b94faaSDavid Teigland brelse(bh_ip); 412b3b94faaSDavid Teigland 413b3b94faaSDavid Teigland if (error) 414b3b94faaSDavid Teigland break; 415b3b94faaSDavid Teigland 416b3b94faaSDavid Teigland sdp->sd_replayed_blocks++; 417b3b94faaSDavid Teigland } 418b3b94faaSDavid Teigland 419b3b94faaSDavid Teigland return error; 420b3b94faaSDavid Teigland } 421b3b94faaSDavid Teigland 422b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 423b3b94faaSDavid Teigland { 424feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 425feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 426b3b94faaSDavid Teigland 427b3b94faaSDavid Teigland if (error) { 4287276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 429b3b94faaSDavid Teigland return; 430b3b94faaSDavid Teigland } 431b3b94faaSDavid Teigland if (pass != 1) 432b3b94faaSDavid Teigland return; 433b3b94faaSDavid Teigland 4347276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 435b3b94faaSDavid Teigland 436b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 437b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 438b3b94faaSDavid Teigland } 439b3b94faaSDavid Teigland 440b3b94faaSDavid Teigland static void revoke_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 441b3b94faaSDavid Teigland { 442f42ab085SSteven Whitehouse struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 443f42ab085SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 444b3b94faaSDavid Teigland struct gfs2_trans *tr; 445b3b94faaSDavid Teigland 4465c676f6dSSteven Whitehouse tr = current->journal_info; 447b3b94faaSDavid Teigland tr->tr_touched = 1; 448b3b94faaSDavid Teigland tr->tr_num_revoke++; 449b3b94faaSDavid Teigland sdp->sd_log_num_revoke++; 450f42ab085SSteven Whitehouse atomic_inc(&gl->gl_revokes); 451f42ab085SSteven Whitehouse set_bit(GLF_LFLUSH, &gl->gl_flags); 452b3b94faaSDavid Teigland list_add(&le->le_list, &sdp->sd_log_le_revoke); 453b3b94faaSDavid Teigland } 454b3b94faaSDavid Teigland 455b3b94faaSDavid Teigland static void revoke_lo_before_commit(struct gfs2_sbd *sdp) 456b3b94faaSDavid Teigland { 457b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 458b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 459b3b94faaSDavid Teigland struct buffer_head *bh; 460b3b94faaSDavid Teigland unsigned int offset; 461b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 46282e86087SSteven Whitehouse struct gfs2_bufdata *bd; 463b3b94faaSDavid Teigland 464b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 465b3b94faaSDavid Teigland return; 466b3b94faaSDavid Teigland 46716615be1SSteven Whitehouse bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE); 46816615be1SSteven Whitehouse ld = bh_log_desc(bh); 469568f4c96SSteven Whitehouse ld->ld_length = cpu_to_be32(gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, 470cd915493SSteven Whitehouse sizeof(u64))); 471b3b94faaSDavid Teigland ld->ld_data1 = cpu_to_be32(sdp->sd_log_num_revoke); 472b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 473b3b94faaSDavid Teigland 474f42ab085SSteven Whitehouse list_for_each_entry(bd, head, bd_le.le_list) { 475b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 476b3b94faaSDavid Teigland 477cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 478721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 479b3b94faaSDavid Teigland 480b3b94faaSDavid Teigland bh = gfs2_log_get_buf(sdp); 481b3b94faaSDavid Teigland mh = (struct gfs2_meta_header *)bh->b_data; 482b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 483e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 484e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 485b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 486b3b94faaSDavid Teigland } 487b3b94faaSDavid Teigland 48882e86087SSteven Whitehouse *(__be64 *)(bh->b_data + offset) = cpu_to_be64(bd->bd_blkno); 489cd915493SSteven Whitehouse offset += sizeof(u64); 490b3b94faaSDavid Teigland } 491b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 492b3b94faaSDavid Teigland 493721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 494b3b94faaSDavid Teigland } 495b3b94faaSDavid Teigland 496f42ab085SSteven Whitehouse static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 497f42ab085SSteven Whitehouse { 498f42ab085SSteven Whitehouse struct list_head *head = &sdp->sd_log_le_revoke; 499f42ab085SSteven Whitehouse struct gfs2_bufdata *bd; 500f42ab085SSteven Whitehouse struct gfs2_glock *gl; 501f42ab085SSteven Whitehouse 502f42ab085SSteven Whitehouse while (!list_empty(head)) { 503f42ab085SSteven Whitehouse bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 504f42ab085SSteven Whitehouse list_del_init(&bd->bd_le.le_list); 505f42ab085SSteven Whitehouse gl = bd->bd_gl; 506f42ab085SSteven Whitehouse atomic_dec(&gl->gl_revokes); 507f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 508f42ab085SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd); 509f42ab085SSteven Whitehouse } 510f42ab085SSteven Whitehouse } 511f42ab085SSteven Whitehouse 512b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 51355167622SAl Viro struct gfs2_log_header_host *head, int pass) 514b3b94faaSDavid Teigland { 515feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 516b3b94faaSDavid Teigland 517b3b94faaSDavid Teigland if (pass != 0) 518b3b94faaSDavid Teigland return; 519b3b94faaSDavid Teigland 520b3b94faaSDavid Teigland sdp->sd_found_revokes = 0; 521b3b94faaSDavid Teigland sdp->sd_replay_tail = head->lh_tail; 522b3b94faaSDavid Teigland } 523b3b94faaSDavid Teigland 524b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 525b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 526b3b94faaSDavid Teigland int pass) 527b3b94faaSDavid Teigland { 528feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 529b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 530b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 531b3b94faaSDavid Teigland struct buffer_head *bh; 532b3b94faaSDavid Teigland unsigned int offset; 533cd915493SSteven Whitehouse u64 blkno; 534b3b94faaSDavid Teigland int first = 1; 535b3b94faaSDavid Teigland int error; 536b3b94faaSDavid Teigland 537b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 538b3b94faaSDavid Teigland return 0; 539b3b94faaSDavid Teigland 540b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 541b3b94faaSDavid Teigland 542b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 543b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 544b3b94faaSDavid Teigland if (error) 545b3b94faaSDavid Teigland return error; 546b3b94faaSDavid Teigland 547b3b94faaSDavid Teigland if (!first) 548b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 549b3b94faaSDavid Teigland 550cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 551b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 552b3b94faaSDavid Teigland 553b3b94faaSDavid Teigland error = gfs2_revoke_add(sdp, blkno, start); 5543ad62e87SBob Peterson if (error < 0) { 5553ad62e87SBob Peterson brelse(bh); 556b3b94faaSDavid Teigland return error; 5573ad62e87SBob Peterson } 558b3b94faaSDavid Teigland else if (error) 559b3b94faaSDavid Teigland sdp->sd_found_revokes++; 560b3b94faaSDavid Teigland 561b3b94faaSDavid Teigland if (!--revokes) 562b3b94faaSDavid Teigland break; 563cd915493SSteven Whitehouse offset += sizeof(u64); 564b3b94faaSDavid Teigland } 565b3b94faaSDavid Teigland 566b3b94faaSDavid Teigland brelse(bh); 567b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 568b3b94faaSDavid Teigland first = 0; 569b3b94faaSDavid Teigland } 570b3b94faaSDavid Teigland 571b3b94faaSDavid Teigland return 0; 572b3b94faaSDavid Teigland } 573b3b94faaSDavid Teigland 574b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 575b3b94faaSDavid Teigland { 576feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 577b3b94faaSDavid Teigland 578b3b94faaSDavid Teigland if (error) { 579b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 580b3b94faaSDavid Teigland return; 581b3b94faaSDavid Teigland } 582b3b94faaSDavid Teigland if (pass != 1) 583b3b94faaSDavid Teigland return; 584b3b94faaSDavid Teigland 585b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 586b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_found_revokes); 587b3b94faaSDavid Teigland 588b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 589b3b94faaSDavid Teigland } 590b3b94faaSDavid Teigland 59118ec7d5cSSteven Whitehouse /** 59218ec7d5cSSteven Whitehouse * databuf_lo_add - Add a databuf to the transaction. 59318ec7d5cSSteven Whitehouse * 59418ec7d5cSSteven Whitehouse * This is used in two distinct cases: 59518ec7d5cSSteven Whitehouse * i) In ordered write mode 59618ec7d5cSSteven Whitehouse * We put the data buffer on a list so that we can ensure that its 59718ec7d5cSSteven Whitehouse * synced to disk at the right time 59818ec7d5cSSteven Whitehouse * ii) In journaled data mode 59918ec7d5cSSteven Whitehouse * We need to journal the data block in the same way as metadata in 60018ec7d5cSSteven Whitehouse * the functions above. The difference is that here we have a tag 60118ec7d5cSSteven Whitehouse * which is two __be64's being the block number (as per meta data) 60218ec7d5cSSteven Whitehouse * and a flag which says whether the data block needs escaping or 60318ec7d5cSSteven Whitehouse * not. This means we need a new log entry for each 251 or so data 60418ec7d5cSSteven Whitehouse * blocks, which isn't an enormous overhead but twice as much as 60518ec7d5cSSteven Whitehouse * for normal metadata blocks. 60618ec7d5cSSteven Whitehouse */ 607b3b94faaSDavid Teigland static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le) 608b3b94faaSDavid Teigland { 60918ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd = container_of(le, struct gfs2_bufdata, bd_le); 6105c676f6dSSteven Whitehouse struct gfs2_trans *tr = current->journal_info; 61118ec7d5cSSteven Whitehouse struct address_space *mapping = bd->bd_bh->b_page->mapping; 612feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(mapping->host); 613b3b94faaSDavid Teigland 6149b9107a5SSteven Whitehouse lock_buffer(bd->bd_bh); 6158bd95727SSteven Whitehouse gfs2_log_lock(sdp); 6169ff8ec32SSteven Whitehouse if (tr) { 6179b9107a5SSteven Whitehouse if (!list_empty(&bd->bd_list_tr)) 6189b9107a5SSteven Whitehouse goto out; 61918ec7d5cSSteven Whitehouse tr->tr_touched = 1; 620773ed1a0SRobert Peterson if (gfs2_is_jdata(ip)) { 62118ec7d5cSSteven Whitehouse tr->tr_num_buf++; 62218ec7d5cSSteven Whitehouse list_add(&bd->bd_list_tr, &tr->tr_list_buf); 623773ed1a0SRobert Peterson } 6249ff8ec32SSteven Whitehouse } 625ddf4b426SBenjamin Marzinski if (!list_empty(&le->le_list)) 6269b9107a5SSteven Whitehouse goto out; 6272332c443SRobert Peterson 6282bcd610dSSteven Whitehouse set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 6292bcd610dSSteven Whitehouse set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags); 6302332c443SRobert Peterson if (gfs2_is_jdata(ip)) { 6312332c443SRobert Peterson gfs2_pin(sdp, bd->bd_bh); 6322332c443SRobert Peterson tr->tr_num_databuf_new++; 633bdcb8856SBob Peterson sdp->sd_log_num_databuf++; 634e5884636SDave Chinner list_add_tail(&le->le_list, &sdp->sd_log_le_databuf); 635d7b616e2SSteven Whitehouse } else { 636e5884636SDave Chinner list_add_tail(&le->le_list, &sdp->sd_log_le_ordered); 637d7b616e2SSteven Whitehouse } 6389b9107a5SSteven Whitehouse out: 639b3b94faaSDavid Teigland gfs2_log_unlock(sdp); 6409b9107a5SSteven Whitehouse unlock_buffer(bd->bd_bh); 641b3b94faaSDavid Teigland } 642b3b94faaSDavid Teigland 64316615be1SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 64418ec7d5cSSteven Whitehouse { 64518ec7d5cSSteven Whitehouse void *kaddr; 64618ec7d5cSSteven Whitehouse __be32 *ptr; 64718ec7d5cSSteven Whitehouse 64816615be1SSteven Whitehouse clear_buffer_escaped(bh); 64916615be1SSteven Whitehouse kaddr = kmap_atomic(bh->b_page, KM_USER0); 65018ec7d5cSSteven Whitehouse ptr = kaddr + bh_offset(bh); 65118ec7d5cSSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 65216615be1SSteven Whitehouse set_buffer_escaped(bh); 653c312c4fdSRussell Cattelan kunmap_atomic(kaddr, KM_USER0); 65416615be1SSteven Whitehouse } 65518ec7d5cSSteven Whitehouse 65616615be1SSteven Whitehouse static void gfs2_write_blocks(struct gfs2_sbd *sdp, struct buffer_head *bh, 65716615be1SSteven Whitehouse struct list_head *list, struct list_head *done, 65816615be1SSteven Whitehouse unsigned int n) 65916615be1SSteven Whitehouse { 66016615be1SSteven Whitehouse struct buffer_head *bh1; 66116615be1SSteven Whitehouse struct gfs2_log_descriptor *ld; 66216615be1SSteven Whitehouse struct gfs2_bufdata *bd; 66316615be1SSteven Whitehouse __be64 *ptr; 66416615be1SSteven Whitehouse 66516615be1SSteven Whitehouse if (!bh) 66616615be1SSteven Whitehouse return; 66716615be1SSteven Whitehouse 66816615be1SSteven Whitehouse ld = bh_log_desc(bh); 66916615be1SSteven Whitehouse ld->ld_length = cpu_to_be32(n + 1); 67016615be1SSteven Whitehouse ld->ld_data1 = cpu_to_be32(n); 67116615be1SSteven Whitehouse 67216615be1SSteven Whitehouse ptr = bh_log_ptr(bh); 67316615be1SSteven Whitehouse 67416615be1SSteven Whitehouse get_bh(bh); 675721a9602SJens Axboe submit_bh(WRITE_SYNC, bh); 67616615be1SSteven Whitehouse gfs2_log_lock(sdp); 67716615be1SSteven Whitehouse while(!list_empty(list)) { 67816615be1SSteven Whitehouse bd = list_entry(list->next, struct gfs2_bufdata, bd_le.le_list); 67916615be1SSteven Whitehouse list_move_tail(&bd->bd_le.le_list, done); 68016615be1SSteven Whitehouse get_bh(bd->bd_bh); 68116615be1SSteven Whitehouse while (be64_to_cpu(*ptr) != bd->bd_bh->b_blocknr) { 68216615be1SSteven Whitehouse gfs2_log_incr_head(sdp); 68316615be1SSteven Whitehouse ptr += 2; 68416615be1SSteven Whitehouse } 68516615be1SSteven Whitehouse gfs2_log_unlock(sdp); 68616615be1SSteven Whitehouse lock_buffer(bd->bd_bh); 68716615be1SSteven Whitehouse if (buffer_escaped(bd->bd_bh)) { 68816615be1SSteven Whitehouse void *kaddr; 68916615be1SSteven Whitehouse bh1 = gfs2_log_get_buf(sdp); 69016615be1SSteven Whitehouse kaddr = kmap_atomic(bd->bd_bh->b_page, KM_USER0); 69116615be1SSteven Whitehouse memcpy(bh1->b_data, kaddr + bh_offset(bd->bd_bh), 69216615be1SSteven Whitehouse bh1->b_size); 69316615be1SSteven Whitehouse kunmap_atomic(kaddr, KM_USER0); 69416615be1SSteven Whitehouse *(__be32 *)bh1->b_data = 0; 69516615be1SSteven Whitehouse clear_buffer_escaped(bd->bd_bh); 69616615be1SSteven Whitehouse unlock_buffer(bd->bd_bh); 69716615be1SSteven Whitehouse brelse(bd->bd_bh); 69816615be1SSteven Whitehouse } else { 69916615be1SSteven Whitehouse bh1 = gfs2_log_fake_buf(sdp, bd->bd_bh); 70016615be1SSteven Whitehouse } 701721a9602SJens Axboe submit_bh(WRITE_SYNC, bh1); 70216615be1SSteven Whitehouse gfs2_log_lock(sdp); 70316615be1SSteven Whitehouse ptr += 2; 70416615be1SSteven Whitehouse } 70516615be1SSteven Whitehouse gfs2_log_unlock(sdp); 70616615be1SSteven Whitehouse brelse(bh); 70718ec7d5cSSteven Whitehouse } 70818ec7d5cSSteven Whitehouse 70918ec7d5cSSteven Whitehouse /** 71018ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 71118ec7d5cSSteven Whitehouse * 71218ec7d5cSSteven Whitehouse */ 713d7b616e2SSteven Whitehouse 714b3b94faaSDavid Teigland static void databuf_lo_before_commit(struct gfs2_sbd *sdp) 715b3b94faaSDavid Teigland { 71616615be1SSteven Whitehouse struct gfs2_bufdata *bd = NULL; 71716615be1SSteven Whitehouse struct buffer_head *bh = NULL; 71816615be1SSteven Whitehouse unsigned int n = 0; 71916615be1SSteven Whitehouse __be64 *ptr = NULL, *end = NULL; 72016615be1SSteven Whitehouse LIST_HEAD(processed); 72116615be1SSteven Whitehouse LIST_HEAD(in_progress); 722b3b94faaSDavid Teigland 723f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 72416615be1SSteven Whitehouse while (!list_empty(&sdp->sd_log_le_databuf)) { 72516615be1SSteven Whitehouse if (ptr == end) { 726f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 72716615be1SSteven Whitehouse gfs2_write_blocks(sdp, bh, &in_progress, &processed, n); 728d7b616e2SSteven Whitehouse n = 0; 72916615be1SSteven Whitehouse bh = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_JDATA); 73016615be1SSteven Whitehouse ptr = bh_log_ptr(bh); 73116615be1SSteven Whitehouse end = bh_ptr_end(bh) - 1; 732f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 73318ec7d5cSSteven Whitehouse continue; 73416615be1SSteven Whitehouse } 73516615be1SSteven Whitehouse bd = list_entry(sdp->sd_log_le_databuf.next, struct gfs2_bufdata, bd_le.le_list); 73616615be1SSteven Whitehouse list_move_tail(&bd->bd_le.le_list, &in_progress); 73716615be1SSteven Whitehouse gfs2_check_magic(bd->bd_bh); 73816615be1SSteven Whitehouse *ptr++ = cpu_to_be64(bd->bd_bh->b_blocknr); 73916615be1SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bh) ? 1 : 0); 74016615be1SSteven Whitehouse n++; 74116615be1SSteven Whitehouse } 742f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 74316615be1SSteven Whitehouse gfs2_write_blocks(sdp, bh, &in_progress, &processed, n); 744f55ab26aSSteven Whitehouse gfs2_log_lock(sdp); 74516615be1SSteven Whitehouse list_splice(&processed, &sdp->sd_log_le_databuf); 746f55ab26aSSteven Whitehouse gfs2_log_unlock(sdp); 747b3b94faaSDavid Teigland } 748b3b94faaSDavid Teigland 74918ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 75018ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 75118ec7d5cSSteven Whitehouse __be64 *ptr, 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); 7555c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 75618ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 75718ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 758cd915493SSteven Whitehouse u64 blkno; 759cd915493SSteven Whitehouse u64 esc; 76018ec7d5cSSteven Whitehouse int error = 0; 76118ec7d5cSSteven Whitehouse 76218ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 76318ec7d5cSSteven Whitehouse return 0; 76418ec7d5cSSteven Whitehouse 76518ec7d5cSSteven Whitehouse gfs2_replay_incr_blk(sdp, &start); 76618ec7d5cSSteven Whitehouse for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 76718ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 76818ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 76918ec7d5cSSteven Whitehouse 77018ec7d5cSSteven Whitehouse sdp->sd_found_blocks++; 77118ec7d5cSSteven Whitehouse 77218ec7d5cSSteven Whitehouse if (gfs2_revoke_check(sdp, blkno, start)) 77318ec7d5cSSteven Whitehouse continue; 77418ec7d5cSSteven Whitehouse 77518ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 77618ec7d5cSSteven Whitehouse if (error) 77718ec7d5cSSteven Whitehouse return error; 77818ec7d5cSSteven Whitehouse 77918ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 78018ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 78118ec7d5cSSteven Whitehouse 78218ec7d5cSSteven Whitehouse /* Unescape */ 78318ec7d5cSSteven Whitehouse if (esc) { 78418ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 78518ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 78618ec7d5cSSteven Whitehouse } 78718ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 78818ec7d5cSSteven Whitehouse 78918ec7d5cSSteven Whitehouse brelse(bh_log); 79018ec7d5cSSteven Whitehouse brelse(bh_ip); 79118ec7d5cSSteven Whitehouse 79218ec7d5cSSteven Whitehouse sdp->sd_replayed_blocks++; 79318ec7d5cSSteven Whitehouse } 79418ec7d5cSSteven Whitehouse 79518ec7d5cSSteven Whitehouse return error; 79618ec7d5cSSteven Whitehouse } 79718ec7d5cSSteven Whitehouse 79818ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 79918ec7d5cSSteven Whitehouse 80018ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 80118ec7d5cSSteven Whitehouse { 802feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 803feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 80418ec7d5cSSteven Whitehouse 80518ec7d5cSSteven Whitehouse if (error) { 8067276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 80718ec7d5cSSteven Whitehouse return; 80818ec7d5cSSteven Whitehouse } 80918ec7d5cSSteven Whitehouse if (pass != 1) 81018ec7d5cSSteven Whitehouse return; 81118ec7d5cSSteven Whitehouse 81218ec7d5cSSteven Whitehouse /* data sync? */ 8137276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 81418ec7d5cSSteven Whitehouse 81518ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 81618ec7d5cSSteven Whitehouse jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 81718ec7d5cSSteven Whitehouse } 81818ec7d5cSSteven Whitehouse 81918ec7d5cSSteven Whitehouse static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_ail *ai) 82018ec7d5cSSteven Whitehouse { 82118ec7d5cSSteven Whitehouse struct list_head *head = &sdp->sd_log_le_databuf; 82218ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 82318ec7d5cSSteven Whitehouse 82418ec7d5cSSteven Whitehouse while (!list_empty(head)) { 82518ec7d5cSSteven Whitehouse bd = list_entry(head->next, struct gfs2_bufdata, bd_le.le_list); 826b8e1aabfSSteven Whitehouse list_del_init(&bd->bd_le.le_list); 82718ec7d5cSSteven Whitehouse sdp->sd_log_num_databuf--; 82818ec7d5cSSteven Whitehouse gfs2_unpin(sdp, bd->bd_bh, ai); 82918ec7d5cSSteven Whitehouse } 83018ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); 83118ec7d5cSSteven Whitehouse } 83218ec7d5cSSteven Whitehouse 83318ec7d5cSSteven Whitehouse 834b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 835b3b94faaSDavid Teigland .lo_add = buf_lo_add, 836b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 837b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 838b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 839b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 840b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 841ea67eedbSSteven Whitehouse .lo_name = "buf", 842b3b94faaSDavid Teigland }; 843b3b94faaSDavid Teigland 844b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 845b3b94faaSDavid Teigland .lo_add = revoke_lo_add, 846b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 847f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 848b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 849b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 850b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 851ea67eedbSSteven Whitehouse .lo_name = "revoke", 852b3b94faaSDavid Teigland }; 853b3b94faaSDavid Teigland 854b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_rg_lops = { 855ea67eedbSSteven Whitehouse .lo_name = "rg", 856b3b94faaSDavid Teigland }; 857b3b94faaSDavid Teigland 858b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 859b3b94faaSDavid Teigland .lo_add = databuf_lo_add, 860b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 86118ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 86218ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 86318ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 864ea67eedbSSteven Whitehouse .lo_name = "databuf", 865b3b94faaSDavid Teigland }; 866b3b94faaSDavid Teigland 867b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 868b3b94faaSDavid Teigland &gfs2_databuf_lops, 86916615be1SSteven Whitehouse &gfs2_buf_lops, 87016615be1SSteven Whitehouse &gfs2_rg_lops, 87116615be1SSteven Whitehouse &gfs2_revoke_lops, 872ea67eedbSSteven Whitehouse NULL, 873b3b94faaSDavid Teigland }; 874b3b94faaSDavid Teigland 875