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> 197f63257dSBenjamin Marzinski #include <linux/list_sort.h> 20b3b94faaSDavid Teigland 21c1696fb8SBob Peterson #include "dir.h" 22b3b94faaSDavid Teigland #include "gfs2.h" 235c676f6dSSteven Whitehouse #include "incore.h" 242332c443SRobert Peterson #include "inode.h" 25b3b94faaSDavid Teigland #include "glock.h" 26b3b94faaSDavid Teigland #include "log.h" 27b3b94faaSDavid Teigland #include "lops.h" 28b3b94faaSDavid Teigland #include "meta_io.h" 29b3b94faaSDavid Teigland #include "recovery.h" 30b3b94faaSDavid Teigland #include "rgrp.h" 31b3b94faaSDavid Teigland #include "trans.h" 325c676f6dSSteven Whitehouse #include "util.h" 3363997775SSteven Whitehouse #include "trace_gfs2.h" 34b3b94faaSDavid Teigland 359b9107a5SSteven Whitehouse /** 369b9107a5SSteven Whitehouse * gfs2_pin - Pin a buffer in memory 379b9107a5SSteven Whitehouse * @sdp: The superblock 389b9107a5SSteven Whitehouse * @bh: The buffer to be pinned 399b9107a5SSteven Whitehouse * 409b9107a5SSteven Whitehouse * The log lock must be held when calling this function 419b9107a5SSteven Whitehouse */ 42767f433fSSteven Whitehouse void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) 439b9107a5SSteven Whitehouse { 449b9107a5SSteven Whitehouse struct gfs2_bufdata *bd; 459b9107a5SSteven Whitehouse 4629687a2aSSteven Whitehouse BUG_ON(!current->journal_info); 479b9107a5SSteven Whitehouse 489b9107a5SSteven Whitehouse clear_buffer_dirty(bh); 499b9107a5SSteven Whitehouse if (test_set_buffer_pinned(bh)) 509b9107a5SSteven Whitehouse gfs2_assert_withdraw(sdp, 0); 519b9107a5SSteven Whitehouse if (!buffer_uptodate(bh)) 529e1a9ecdSAndreas Gruenbacher gfs2_io_error_bh_wd(sdp, bh); 539b9107a5SSteven Whitehouse bd = bh->b_private; 549b9107a5SSteven Whitehouse /* If this buffer is in the AIL and it has already been written 559b9107a5SSteven Whitehouse * to in-place disk block, remove it from the AIL. 569b9107a5SSteven Whitehouse */ 57c618e87aSSteven Whitehouse spin_lock(&sdp->sd_ail_lock); 5816ca9412SBenjamin Marzinski if (bd->bd_tr) 5916ca9412SBenjamin Marzinski list_move(&bd->bd_ail_st_list, &bd->bd_tr->tr_ail2_list); 60c618e87aSSteven Whitehouse spin_unlock(&sdp->sd_ail_lock); 619b9107a5SSteven Whitehouse get_bh(bh); 625e687eacSBenjamin Marzinski atomic_inc(&sdp->sd_log_pinned); 6363997775SSteven Whitehouse trace_gfs2_pin(bd, 1); 649b9107a5SSteven Whitehouse } 659b9107a5SSteven Whitehouse 667c9ca621SBob Peterson static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) 677c9ca621SBob Peterson { 687c9ca621SBob Peterson return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; 697c9ca621SBob Peterson } 707c9ca621SBob Peterson 717c9ca621SBob Peterson static void maybe_release_space(struct gfs2_bufdata *bd) 727c9ca621SBob Peterson { 737c9ca621SBob Peterson struct gfs2_glock *gl = bd->bd_gl; 7415562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 756f6597baSAndreas Gruenbacher struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); 767c9ca621SBob Peterson unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; 777c9ca621SBob Peterson struct gfs2_bitmap *bi = rgd->rd_bits + index; 787c9ca621SBob Peterson 795a7c6690SFabian Frederick if (bi->bi_clone == NULL) 807c9ca621SBob Peterson return; 817c9ca621SBob Peterson if (sdp->sd_args.ar_discard) 8266fc061bSSteven Whitehouse gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); 837c9ca621SBob Peterson memcpy(bi->bi_clone + bi->bi_offset, 84281b4952SAndreas Gruenbacher bd->bd_bh->b_data + bi->bi_offset, bi->bi_bytes); 857c9ca621SBob Peterson clear_bit(GBF_FULL, &bi->bi_flags); 867c9ca621SBob Peterson rgd->rd_free_clone = rgd->rd_free; 875ea5050cSBob Peterson rgd->rd_extfail_pt = rgd->rd_free; 887c9ca621SBob Peterson } 897c9ca621SBob Peterson 909b9107a5SSteven Whitehouse /** 919b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 929b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 939b9107a5SSteven Whitehouse * @bh: The buffer to unpin 949b9107a5SSteven Whitehouse * @ai: 9529687a2aSSteven Whitehouse * @flags: The inode dirty flags 969b9107a5SSteven Whitehouse * 979b9107a5SSteven Whitehouse */ 989b9107a5SSteven Whitehouse 999b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 10016ca9412SBenjamin Marzinski struct gfs2_trans *tr) 1019b9107a5SSteven Whitehouse { 1029b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1039b9107a5SSteven Whitehouse 10429687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10529687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1069b9107a5SSteven Whitehouse 1079b9107a5SSteven Whitehouse lock_buffer(bh); 1089b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1099b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1109b9107a5SSteven Whitehouse 1117c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1127c9ca621SBob Peterson maybe_release_space(bd); 1137c9ca621SBob Peterson 114d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 11516ca9412SBenjamin Marzinski if (bd->bd_tr) { 1169b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1179b9107a5SSteven Whitehouse brelse(bh); 1189b9107a5SSteven Whitehouse } else { 1199b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1209b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1219b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1229b9107a5SSteven Whitehouse } 12316ca9412SBenjamin Marzinski bd->bd_tr = tr; 12416ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 125d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 126d6a079e8SDave Chinner 12729687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 12863997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1299b9107a5SSteven Whitehouse unlock_buffer(bh); 1305e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1319b9107a5SSteven Whitehouse } 1329b9107a5SSteven Whitehouse 133e8c92ed7SSteven Whitehouse static void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13416615be1SSteven Whitehouse { 135e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 136e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 137e8c92ed7SSteven Whitehouse 138722f6f62SBob Peterson if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) 139e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 14016615be1SSteven Whitehouse } 14116615be1SSteven Whitehouse 142c1696fb8SBob Peterson u64 gfs2_log_bmap(struct gfs2_sbd *sdp) 14316615be1SSteven Whitehouse { 144e8c92ed7SSteven Whitehouse unsigned int lbn = sdp->sd_log_flush_head; 145e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 146e8c92ed7SSteven Whitehouse u64 block; 14716615be1SSteven Whitehouse 148b50f227bSSteven Whitehouse list_for_each_entry(je, &sdp->sd_jdesc->extent_list, list) { 149b50f227bSSteven Whitehouse if ((lbn >= je->lblock) && (lbn < (je->lblock + je->blocks))) { 150e8c92ed7SSteven Whitehouse block = je->dblock + lbn - je->lblock; 15147ac5537SSteven Whitehouse gfs2_log_incr_head(sdp); 152e8c92ed7SSteven Whitehouse return block; 153e8c92ed7SSteven Whitehouse } 154e8c92ed7SSteven Whitehouse } 15547ac5537SSteven Whitehouse 156e8c92ed7SSteven Whitehouse return -1; 15747ac5537SSteven Whitehouse } 15847ac5537SSteven Whitehouse 15947ac5537SSteven Whitehouse /** 160e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 161e8c92ed7SSteven Whitehouse * @sdp: The superblock 162e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 163e8c92ed7SSteven Whitehouse * @error: The i/o status 164e8c92ed7SSteven Whitehouse * 1654519eaadSBob Peterson * This finds the relevant buffers and unlocks them and sets the 166e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 167e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 168e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 169e8c92ed7SSteven Whitehouse */ 170e8c92ed7SSteven Whitehouse 1716dc4f100SMing Lei static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, 1726dc4f100SMing Lei struct bio_vec *bvec, 1734e4cbee9SChristoph Hellwig blk_status_t error) 174e8c92ed7SSteven Whitehouse { 175e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 176e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 177e8c92ed7SSteven Whitehouse unsigned size; 178e8c92ed7SSteven Whitehouse 179e8c92ed7SSteven Whitehouse bh = page_buffers(page); 180e8c92ed7SSteven Whitehouse size = bvec->bv_len; 181e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 182e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 183e8c92ed7SSteven Whitehouse do { 184e8c92ed7SSteven Whitehouse if (error) 18587354e5dSJeff Layton mark_buffer_write_io_error(bh); 186e8c92ed7SSteven Whitehouse unlock_buffer(bh); 187e8c92ed7SSteven Whitehouse next = bh->b_this_page; 188e8c92ed7SSteven Whitehouse size -= bh->b_size; 189e8c92ed7SSteven Whitehouse brelse(bh); 190e8c92ed7SSteven Whitehouse bh = next; 191e8c92ed7SSteven Whitehouse } while(bh && size); 192e8c92ed7SSteven Whitehouse } 193e8c92ed7SSteven Whitehouse 194e8c92ed7SSteven Whitehouse /** 195e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 196e8c92ed7SSteven Whitehouse * @bio: The bio 19723e93c9bSBob Peterson * @error: Status of i/o request 198e8c92ed7SSteven Whitehouse * 199e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 200e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 201e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 20247ac5537SSteven Whitehouse * 20347ac5537SSteven Whitehouse */ 20447ac5537SSteven Whitehouse 2054246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 20647ac5537SSteven Whitehouse { 207e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 208e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 209e8c92ed7SSteven Whitehouse struct page *page; 210e8c92ed7SSteven Whitehouse int i; 2116dc4f100SMing Lei struct bvec_iter_all iter_all; 21247ac5537SSteven Whitehouse 213942b0cddSBob Peterson if (bio->bi_status) { 214942b0cddSBob Peterson fs_err(sdp, "Error %d writing to journal, jid=%u\n", 215942b0cddSBob Peterson bio->bi_status, sdp->sd_jdesc->jd_jid); 216942b0cddSBob Peterson wake_up(&sdp->sd_logd_waitq); 217942b0cddSBob Peterson } 218e8c92ed7SSteven Whitehouse 2196dc4f100SMing Lei bio_for_each_segment_all(bvec, bio, i, iter_all) { 220e8c92ed7SSteven Whitehouse page = bvec->bv_page; 221e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2224e4cbee9SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); 223e8c92ed7SSteven Whitehouse else 224e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 225e8c92ed7SSteven Whitehouse } 226e8c92ed7SSteven Whitehouse 227e8c92ed7SSteven Whitehouse bio_put(bio); 22847ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 22947ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 23047ac5537SSteven Whitehouse } 23147ac5537SSteven Whitehouse 23247ac5537SSteven Whitehouse /** 2335b846095SAbhi Das * gfs2_log_submit_bio - Submit any pending log bio 2345b846095SAbhi Das * @biop: Address of the bio pointer 23523e93c9bSBob Peterson * @op: REQ_OP 23623e93c9bSBob Peterson * @op_flags: req_flag_bits 237e8c92ed7SSteven Whitehouse * 238e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 239e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 240e8c92ed7SSteven Whitehouse */ 241e8c92ed7SSteven Whitehouse 24223e93c9bSBob Peterson void gfs2_log_submit_bio(struct bio **biop, int op, int op_flags) 243e8c92ed7SSteven Whitehouse { 2445b846095SAbhi Das struct bio *bio = *biop; 2455b846095SAbhi Das if (bio) { 2465b846095SAbhi Das struct gfs2_sbd *sdp = bio->bi_private; 247e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 24823e93c9bSBob Peterson bio_set_op_attrs(bio, op, op_flags); 2495b846095SAbhi Das submit_bio(bio); 2505b846095SAbhi Das *biop = NULL; 251e8c92ed7SSteven Whitehouse } 252e8c92ed7SSteven Whitehouse } 253e8c92ed7SSteven Whitehouse 254e8c92ed7SSteven Whitehouse /** 2555b846095SAbhi Das * gfs2_log_alloc_bio - Allocate a bio 256e8c92ed7SSteven Whitehouse * @sdp: The super block 2575b846095SAbhi Das * @blkno: The device block number we want to write to 2585b846095SAbhi Das * @end_io: The bi_end_io callback 259e8c92ed7SSteven Whitehouse * 2605b846095SAbhi Das * Allocate a new bio, initialize it with the given parameters and return it. 261e8c92ed7SSteven Whitehouse * 2625b846095SAbhi Das * Returns: The newly allocated bio 263e8c92ed7SSteven Whitehouse */ 264e8c92ed7SSteven Whitehouse 2655b846095SAbhi Das static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno, 2665b846095SAbhi Das bio_end_io_t *end_io) 267e8c92ed7SSteven Whitehouse { 268e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 2695b846095SAbhi Das struct bio *bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); 270e8c92ed7SSteven Whitehouse 2714f024f37SKent Overstreet bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); 27274d46992SChristoph Hellwig bio_set_dev(bio, sb->s_bdev); 2735b846095SAbhi Das bio->bi_end_io = end_io; 274e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 275e8c92ed7SSteven Whitehouse 276e8c92ed7SSteven Whitehouse return bio; 277e8c92ed7SSteven Whitehouse } 278e8c92ed7SSteven Whitehouse 279e8c92ed7SSteven Whitehouse /** 280e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 281e8c92ed7SSteven Whitehouse * @sdp: The super block 282e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 2835b846095SAbhi Das * @bio: The bio to get or allocate 2845b846095SAbhi Das * @op: REQ_OP 2855b846095SAbhi Das * @end_io: The bi_end_io callback 2865b846095SAbhi Das * @flush: Always flush the current bio and allocate a new one? 287e8c92ed7SSteven Whitehouse * 288e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 289e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 2905b846095SAbhi Das * device. If there is no cached bio, or we just flushed it, then 291e8c92ed7SSteven Whitehouse * allocate a new one. 292e8c92ed7SSteven Whitehouse * 293e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 294e8c92ed7SSteven Whitehouse */ 295e8c92ed7SSteven Whitehouse 2965b846095SAbhi Das static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno, 2975b846095SAbhi Das struct bio **biop, int op, 2985b846095SAbhi Das bio_end_io_t *end_io, bool flush) 299e8c92ed7SSteven Whitehouse { 3005b846095SAbhi Das struct bio *bio = *biop; 301e8c92ed7SSteven Whitehouse 302e8c92ed7SSteven Whitehouse if (bio) { 3035b846095SAbhi Das u64 nblk; 3045b846095SAbhi Das 305f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 306e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 3075b846095SAbhi Das if (blkno == nblk && !flush) 308e8c92ed7SSteven Whitehouse return bio; 30923e93c9bSBob Peterson gfs2_log_submit_bio(biop, op, 0); 310e8c92ed7SSteven Whitehouse } 311e8c92ed7SSteven Whitehouse 3125b846095SAbhi Das *biop = gfs2_log_alloc_bio(sdp, blkno, end_io); 3135b846095SAbhi Das return *biop; 314e8c92ed7SSteven Whitehouse } 315e8c92ed7SSteven Whitehouse 316e8c92ed7SSteven Whitehouse /** 317e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31847ac5537SSteven Whitehouse * @sdp: the filesystem 319e8c92ed7SSteven Whitehouse * @page: the page to write 320e8c92ed7SSteven Whitehouse * @size: the size of the data to write 321e8c92ed7SSteven Whitehouse * @offset: the offset within the page 322c1696fb8SBob Peterson * @blkno: block number of the log entry 32347ac5537SSteven Whitehouse * 324e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 325e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 326e8c92ed7SSteven Whitehouse * then add the page segment to that. 32747ac5537SSteven Whitehouse */ 32847ac5537SSteven Whitehouse 329c1696fb8SBob Peterson void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 330c1696fb8SBob Peterson unsigned size, unsigned offset, u64 blkno) 33147ac5537SSteven Whitehouse { 332e8c92ed7SSteven Whitehouse struct bio *bio; 333e8c92ed7SSteven Whitehouse int ret; 33447ac5537SSteven Whitehouse 3355b846095SAbhi Das bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, REQ_OP_WRITE, 3365b846095SAbhi Das gfs2_end_log_write, false); 337e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 338e8c92ed7SSteven Whitehouse if (ret == 0) { 3395b846095SAbhi Das bio = gfs2_log_get_bio(sdp, blkno, &sdp->sd_log_bio, 3405b846095SAbhi Das REQ_OP_WRITE, gfs2_end_log_write, true); 341e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 342e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 343e8c92ed7SSteven Whitehouse } 34447ac5537SSteven Whitehouse } 34516615be1SSteven Whitehouse 346e8c92ed7SSteven Whitehouse /** 347e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 348e8c92ed7SSteven Whitehouse * @sdp: The super block 349e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 350e8c92ed7SSteven Whitehouse * 351e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 352e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 353e8c92ed7SSteven Whitehouse * completed. 354e8c92ed7SSteven Whitehouse */ 355e8c92ed7SSteven Whitehouse 356e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 35716615be1SSteven Whitehouse { 358c1696fb8SBob Peterson gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), 359c1696fb8SBob Peterson gfs2_log_bmap(sdp)); 360e8c92ed7SSteven Whitehouse } 361e8c92ed7SSteven Whitehouse 362e8c92ed7SSteven Whitehouse /** 363e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 364e8c92ed7SSteven Whitehouse * @sdp: The superblock 365e8c92ed7SSteven Whitehouse * @page: The struct page 366e8c92ed7SSteven Whitehouse * 367e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 368e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 369e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 370e8c92ed7SSteven Whitehouse * the page may be freed at any time. 371e8c92ed7SSteven Whitehouse */ 372e8c92ed7SSteven Whitehouse 373e8c92ed7SSteven Whitehouse void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 374e8c92ed7SSteven Whitehouse { 375e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 376c1696fb8SBob Peterson gfs2_log_write(sdp, page, sb->s_blocksize, 0, 377c1696fb8SBob Peterson gfs2_log_bmap(sdp)); 378e8c92ed7SSteven Whitehouse } 379e8c92ed7SSteven Whitehouse 380dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 381dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 382e8c92ed7SSteven Whitehouse { 383144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 384e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 385e8c92ed7SSteven Whitehouse clear_page(ld); 38616615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 38716615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 38816615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 38916615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 390dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 391dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 39216615be1SSteven Whitehouse ld->ld_data2 = 0; 393e8c92ed7SSteven Whitehouse return page; 39416615be1SSteven Whitehouse } 39516615be1SSteven Whitehouse 396dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 397dad30e90SSteven Whitehouse { 398dad30e90SSteven Whitehouse void *kaddr; 399dad30e90SSteven Whitehouse __be32 *ptr; 400dad30e90SSteven Whitehouse 401dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 402dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 403dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 404dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 405dad30e90SSteven Whitehouse set_buffer_escaped(bh); 406dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 407dad30e90SSteven Whitehouse } 408dad30e90SSteven Whitehouse 4097f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 4107f63257dSBenjamin Marzinski { 4117f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 4127f63257dSBenjamin Marzinski 4137f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 4147f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 4157f63257dSBenjamin Marzinski 4167f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 4177f63257dSBenjamin Marzinski return -1; 4187f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 4197f63257dSBenjamin Marzinski return 1; 4207f63257dSBenjamin Marzinski return 0; 4217f63257dSBenjamin Marzinski } 4227f63257dSBenjamin Marzinski 423dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 424dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 425dad30e90SSteven Whitehouse bool is_databuf) 426b3b94faaSDavid Teigland { 427b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 428b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 429e8c92ed7SSteven Whitehouse struct page *page; 430b3b94faaSDavid Teigland unsigned int num; 431b3b94faaSDavid Teigland unsigned n; 432b3b94faaSDavid Teigland __be64 *ptr; 433b3b94faaSDavid Teigland 434905d2aefSBob Peterson gfs2_log_lock(sdp); 4357f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 436c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 437b3b94faaSDavid Teigland while(total) { 438b3b94faaSDavid Teigland num = total; 439b3b94faaSDavid Teigland if (total > limit) 440b3b94faaSDavid Teigland num = limit; 441905d2aefSBob Peterson gfs2_log_unlock(sdp); 4424a586812SBob Peterson page = gfs2_get_log_desc(sdp, 4434a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 4444a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 445e8c92ed7SSteven Whitehouse ld = page_address(page); 446905d2aefSBob Peterson gfs2_log_lock(sdp); 447e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 448b3b94faaSDavid Teigland 449b3b94faaSDavid Teigland n = 0; 450c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 451b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 452dad30e90SSteven Whitehouse if (is_databuf) { 453dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 454dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 455dad30e90SSteven Whitehouse } 456b3b94faaSDavid Teigland if (++n >= num) 457b3b94faaSDavid Teigland break; 458b3b94faaSDavid Teigland } 459b3b94faaSDavid Teigland 460905d2aefSBob Peterson gfs2_log_unlock(sdp); 461e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 462905d2aefSBob Peterson gfs2_log_lock(sdp); 463b3b94faaSDavid Teigland 464b3b94faaSDavid Teigland n = 0; 465c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 46616615be1SSteven Whitehouse get_bh(bd2->bd_bh); 467905d2aefSBob Peterson gfs2_log_unlock(sdp); 46816615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 469dad30e90SSteven Whitehouse 470dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 471dad30e90SSteven Whitehouse void *kaddr; 472dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 473dad30e90SSteven Whitehouse ptr = page_address(page); 474dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 475dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 476dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 477dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 478dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 479dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 480dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 481dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 482dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 483dad30e90SSteven Whitehouse } else { 484e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 485dad30e90SSteven Whitehouse } 486905d2aefSBob Peterson gfs2_log_lock(sdp); 487b3b94faaSDavid Teigland if (++n >= num) 488b3b94faaSDavid Teigland break; 489b3b94faaSDavid Teigland } 490b3b94faaSDavid Teigland 491905d2aefSBob Peterson BUG_ON(total < num); 492b3b94faaSDavid Teigland total -= num; 493b3b94faaSDavid Teigland } 494905d2aefSBob Peterson gfs2_log_unlock(sdp); 495b3b94faaSDavid Teigland } 496b3b94faaSDavid Teigland 497d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 498dad30e90SSteven Whitehouse { 499dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 500022ef4feSSteven Whitehouse unsigned int nbuf; 501d69a3c65SSteven Whitehouse if (tr == NULL) 502d69a3c65SSteven Whitehouse return; 503022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 504022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 505dad30e90SSteven Whitehouse } 506dad30e90SSteven Whitehouse 50716ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 508b3b94faaSDavid Teigland { 509d69a3c65SSteven Whitehouse struct list_head *head; 510b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 511b3b94faaSDavid Teigland 512d69a3c65SSteven Whitehouse if (tr == NULL) 51316ca9412SBenjamin Marzinski return; 51416ca9412SBenjamin Marzinski 515d69a3c65SSteven Whitehouse head = &tr->tr_buf; 516b3b94faaSDavid Teigland while (!list_empty(head)) { 517c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 518c0752aa7SBob Peterson list_del_init(&bd->bd_list); 51916ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 520b3b94faaSDavid Teigland } 521b3b94faaSDavid Teigland } 522b3b94faaSDavid Teigland 523b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 52455167622SAl Viro struct gfs2_log_header_host *head, int pass) 525b3b94faaSDavid Teigland { 526b3b94faaSDavid Teigland if (pass != 0) 527b3b94faaSDavid Teigland return; 528b3b94faaSDavid Teigland 529a17d758bSBob Peterson jd->jd_found_blocks = 0; 530a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 531b3b94faaSDavid Teigland } 532b3b94faaSDavid Teigland 5337c70b896SBob Peterson static int buf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 534b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 535b3b94faaSDavid Teigland int pass) 536b3b94faaSDavid Teigland { 537feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 538feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 5395c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 540b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 541b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 542cd915493SSteven Whitehouse u64 blkno; 543b3b94faaSDavid Teigland int error = 0; 544b3b94faaSDavid Teigland 545b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 546b3b94faaSDavid Teigland return 0; 547b3b94faaSDavid Teigland 548e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 549b3b94faaSDavid Teigland 550e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 551b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 552b3b94faaSDavid Teigland 553a17d758bSBob Peterson jd->jd_found_blocks++; 554b3b94faaSDavid Teigland 555a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 556b3b94faaSDavid Teigland continue; 557b3b94faaSDavid Teigland 558b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 559b3b94faaSDavid Teigland if (error) 560b3b94faaSDavid Teigland return error; 561b3b94faaSDavid Teigland 562b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 563b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 564b3b94faaSDavid Teigland 565b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 566b3b94faaSDavid Teigland error = -EIO; 567b3b94faaSDavid Teigland else 568b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 569b3b94faaSDavid Teigland 570b3b94faaSDavid Teigland brelse(bh_log); 571b3b94faaSDavid Teigland brelse(bh_ip); 572b3b94faaSDavid Teigland 573b3b94faaSDavid Teigland if (error) 574b3b94faaSDavid Teigland break; 575b3b94faaSDavid Teigland 576a17d758bSBob Peterson jd->jd_replayed_blocks++; 577b3b94faaSDavid Teigland } 578b3b94faaSDavid Teigland 579b3b94faaSDavid Teigland return error; 580b3b94faaSDavid Teigland } 581b3b94faaSDavid Teigland 5827c0ef28aSSteven Whitehouse /** 5837c0ef28aSSteven Whitehouse * gfs2_meta_sync - Sync all buffers associated with a glock 5847c0ef28aSSteven Whitehouse * @gl: The glock 5857c0ef28aSSteven Whitehouse * 5867c0ef28aSSteven Whitehouse */ 5877c0ef28aSSteven Whitehouse 5887c0ef28aSSteven Whitehouse static void gfs2_meta_sync(struct gfs2_glock *gl) 5897c0ef28aSSteven Whitehouse { 5907c0ef28aSSteven Whitehouse struct address_space *mapping = gfs2_glock2aspace(gl); 59115562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 5927c0ef28aSSteven Whitehouse int error; 5937c0ef28aSSteven Whitehouse 59470d4ee94SSteven Whitehouse if (mapping == NULL) 59570d4ee94SSteven Whitehouse mapping = &sdp->sd_aspace; 59670d4ee94SSteven Whitehouse 5977c0ef28aSSteven Whitehouse filemap_fdatawrite(mapping); 5987c0ef28aSSteven Whitehouse error = filemap_fdatawait(mapping); 5997c0ef28aSSteven Whitehouse 6007c0ef28aSSteven Whitehouse if (error) 60115562c43SBob Peterson gfs2_io_error(gl->gl_name.ln_sbd); 6027c0ef28aSSteven Whitehouse } 6037c0ef28aSSteven Whitehouse 604b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 605b3b94faaSDavid Teigland { 606feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 607feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 608b3b94faaSDavid Teigland 609b3b94faaSDavid Teigland if (error) { 6107276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 611b3b94faaSDavid Teigland return; 612b3b94faaSDavid Teigland } 613b3b94faaSDavid Teigland if (pass != 1) 614b3b94faaSDavid Teigland return; 615b3b94faaSDavid Teigland 6167276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 617b3b94faaSDavid Teigland 618b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 619a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 620b3b94faaSDavid Teigland } 621b3b94faaSDavid Teigland 622d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 623b3b94faaSDavid Teigland { 624b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 625b3b94faaSDavid Teigland unsigned int offset; 626b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 62782e86087SSteven Whitehouse struct gfs2_bufdata *bd; 628e8c92ed7SSteven Whitehouse struct page *page; 629dad30e90SSteven Whitehouse unsigned int length; 630b3b94faaSDavid Teigland 6315d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 632b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 633b3b94faaSDavid Teigland return; 634b3b94faaSDavid Teigland 635dad30e90SSteven Whitehouse length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); 636dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 637b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 638b3b94faaSDavid Teigland 639c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 640b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 641b3b94faaSDavid Teigland 642cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 643b3b94faaSDavid Teigland 644e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 645e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 646e8c92ed7SSteven Whitehouse mh = page_address(page); 647e8c92ed7SSteven Whitehouse clear_page(mh); 648b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 649e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 650e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 651b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 652b3b94faaSDavid Teigland } 653b3b94faaSDavid Teigland 654e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 655cd915493SSteven Whitehouse offset += sizeof(u64); 656b3b94faaSDavid Teigland } 657b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 658b3b94faaSDavid Teigland 659e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 660b3b94faaSDavid Teigland } 661b3b94faaSDavid Teigland 66216ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 663f42ab085SSteven Whitehouse { 664f42ab085SSteven Whitehouse struct list_head *head = &sdp->sd_log_le_revoke; 665f42ab085SSteven Whitehouse struct gfs2_bufdata *bd; 666f42ab085SSteven Whitehouse struct gfs2_glock *gl; 667f42ab085SSteven Whitehouse 668f42ab085SSteven Whitehouse while (!list_empty(head)) { 669c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 670c0752aa7SBob Peterson list_del_init(&bd->bd_list); 671f42ab085SSteven Whitehouse gl = bd->bd_gl; 672f42ab085SSteven Whitehouse atomic_dec(&gl->gl_revokes); 673f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 674f42ab085SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd); 675f42ab085SSteven Whitehouse } 676f42ab085SSteven Whitehouse } 677f42ab085SSteven Whitehouse 678b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 67955167622SAl Viro struct gfs2_log_header_host *head, int pass) 680b3b94faaSDavid Teigland { 681b3b94faaSDavid Teigland if (pass != 0) 682b3b94faaSDavid Teigland return; 683b3b94faaSDavid Teigland 684a17d758bSBob Peterson jd->jd_found_revokes = 0; 685a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 686b3b94faaSDavid Teigland } 687b3b94faaSDavid Teigland 6887c70b896SBob Peterson static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 689b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 690b3b94faaSDavid Teigland int pass) 691b3b94faaSDavid Teigland { 692feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 693b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 694b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 695b3b94faaSDavid Teigland struct buffer_head *bh; 696b3b94faaSDavid Teigland unsigned int offset; 697cd915493SSteven Whitehouse u64 blkno; 698b3b94faaSDavid Teigland int first = 1; 699b3b94faaSDavid Teigland int error; 700b3b94faaSDavid Teigland 701b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 702b3b94faaSDavid Teigland return 0; 703b3b94faaSDavid Teigland 704b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 705b3b94faaSDavid Teigland 706e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 707b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 708b3b94faaSDavid Teigland if (error) 709b3b94faaSDavid Teigland return error; 710b3b94faaSDavid Teigland 711b3b94faaSDavid Teigland if (!first) 712b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 713b3b94faaSDavid Teigland 714cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 715b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 716b3b94faaSDavid Teigland 717a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 7183ad62e87SBob Peterson if (error < 0) { 7193ad62e87SBob Peterson brelse(bh); 720b3b94faaSDavid Teigland return error; 7213ad62e87SBob Peterson } 722b3b94faaSDavid Teigland else if (error) 723a17d758bSBob Peterson jd->jd_found_revokes++; 724b3b94faaSDavid Teigland 725b3b94faaSDavid Teigland if (!--revokes) 726b3b94faaSDavid Teigland break; 727cd915493SSteven Whitehouse offset += sizeof(u64); 728b3b94faaSDavid Teigland } 729b3b94faaSDavid Teigland 730b3b94faaSDavid Teigland brelse(bh); 731b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 732b3b94faaSDavid Teigland first = 0; 733b3b94faaSDavid Teigland } 734b3b94faaSDavid Teigland 735b3b94faaSDavid Teigland return 0; 736b3b94faaSDavid Teigland } 737b3b94faaSDavid Teigland 738b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 739b3b94faaSDavid Teigland { 740feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 741b3b94faaSDavid Teigland 742b3b94faaSDavid Teigland if (error) { 743a17d758bSBob Peterson gfs2_revoke_clean(jd); 744b3b94faaSDavid Teigland return; 745b3b94faaSDavid Teigland } 746b3b94faaSDavid Teigland if (pass != 1) 747b3b94faaSDavid Teigland return; 748b3b94faaSDavid Teigland 749b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 750a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 751b3b94faaSDavid Teigland 752a17d758bSBob Peterson gfs2_revoke_clean(jd); 753b3b94faaSDavid Teigland } 754b3b94faaSDavid Teigland 75518ec7d5cSSteven Whitehouse /** 75618ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 75718ec7d5cSSteven Whitehouse * 75818ec7d5cSSteven Whitehouse */ 759d7b616e2SSteven Whitehouse 760d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 761b3b94faaSDavid Teigland { 762022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 763022ef4feSSteven Whitehouse unsigned int nbuf; 764d69a3c65SSteven Whitehouse if (tr == NULL) 765d69a3c65SSteven Whitehouse return; 766022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 767022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 768b3b94faaSDavid Teigland } 769b3b94faaSDavid Teigland 7707c70b896SBob Peterson static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, u32 start, 77118ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 77218ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 77318ec7d5cSSteven Whitehouse { 774feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 7755c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 77618ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 77718ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 778cd915493SSteven Whitehouse u64 blkno; 779cd915493SSteven Whitehouse u64 esc; 78018ec7d5cSSteven Whitehouse int error = 0; 78118ec7d5cSSteven Whitehouse 78218ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 78318ec7d5cSSteven Whitehouse return 0; 78418ec7d5cSSteven Whitehouse 785e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 786e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 78718ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 78818ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 78918ec7d5cSSteven Whitehouse 790a17d758bSBob Peterson jd->jd_found_blocks++; 79118ec7d5cSSteven Whitehouse 792a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 79318ec7d5cSSteven Whitehouse continue; 79418ec7d5cSSteven Whitehouse 79518ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 79618ec7d5cSSteven Whitehouse if (error) 79718ec7d5cSSteven Whitehouse return error; 79818ec7d5cSSteven Whitehouse 79918ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 80018ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 80118ec7d5cSSteven Whitehouse 80218ec7d5cSSteven Whitehouse /* Unescape */ 80318ec7d5cSSteven Whitehouse if (esc) { 80418ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 80518ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 80618ec7d5cSSteven Whitehouse } 80718ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 80818ec7d5cSSteven Whitehouse 80918ec7d5cSSteven Whitehouse brelse(bh_log); 81018ec7d5cSSteven Whitehouse brelse(bh_ip); 81118ec7d5cSSteven Whitehouse 812a17d758bSBob Peterson jd->jd_replayed_blocks++; 81318ec7d5cSSteven Whitehouse } 81418ec7d5cSSteven Whitehouse 81518ec7d5cSSteven Whitehouse return error; 81618ec7d5cSSteven Whitehouse } 81718ec7d5cSSteven Whitehouse 81818ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 81918ec7d5cSSteven Whitehouse 82018ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 82118ec7d5cSSteven Whitehouse { 822feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 823feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 82418ec7d5cSSteven Whitehouse 82518ec7d5cSSteven Whitehouse if (error) { 8267276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 82718ec7d5cSSteven Whitehouse return; 82818ec7d5cSSteven Whitehouse } 82918ec7d5cSSteven Whitehouse if (pass != 1) 83018ec7d5cSSteven Whitehouse return; 83118ec7d5cSSteven Whitehouse 83218ec7d5cSSteven Whitehouse /* data sync? */ 8337276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 83418ec7d5cSSteven Whitehouse 83518ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 836a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 83718ec7d5cSSteven Whitehouse } 83818ec7d5cSSteven Whitehouse 83916ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 84018ec7d5cSSteven Whitehouse { 841d69a3c65SSteven Whitehouse struct list_head *head; 84218ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 84318ec7d5cSSteven Whitehouse 844d69a3c65SSteven Whitehouse if (tr == NULL) 84516ca9412SBenjamin Marzinski return; 84616ca9412SBenjamin Marzinski 847d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 84818ec7d5cSSteven Whitehouse while (!list_empty(head)) { 849c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 850c0752aa7SBob Peterson list_del_init(&bd->bd_list); 85116ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 85218ec7d5cSSteven Whitehouse } 85318ec7d5cSSteven Whitehouse } 85418ec7d5cSSteven Whitehouse 85518ec7d5cSSteven Whitehouse 856b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 857b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 858b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 859b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 860b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 861b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 862ea67eedbSSteven Whitehouse .lo_name = "buf", 863b3b94faaSDavid Teigland }; 864b3b94faaSDavid Teigland 865b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 866b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 867f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 868b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 869b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 870b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 871ea67eedbSSteven Whitehouse .lo_name = "revoke", 872b3b94faaSDavid Teigland }; 873b3b94faaSDavid Teigland 874b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 875b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 87618ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 87718ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 87818ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 879ea67eedbSSteven Whitehouse .lo_name = "databuf", 880b3b94faaSDavid Teigland }; 881b3b94faaSDavid Teigland 882b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 883b3b94faaSDavid Teigland &gfs2_databuf_lops, 88416615be1SSteven Whitehouse &gfs2_buf_lops, 88516615be1SSteven Whitehouse &gfs2_revoke_lops, 886ea67eedbSSteven Whitehouse NULL, 887b3b94faaSDavid Teigland }; 888b3b94faaSDavid Teigland 889