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 21b3b94faaSDavid Teigland #include "gfs2.h" 225c676f6dSSteven Whitehouse #include "incore.h" 232332c443SRobert Peterson #include "inode.h" 24b3b94faaSDavid Teigland #include "glock.h" 25b3b94faaSDavid Teigland #include "log.h" 26b3b94faaSDavid Teigland #include "lops.h" 27b3b94faaSDavid Teigland #include "meta_io.h" 28b3b94faaSDavid Teigland #include "recovery.h" 29b3b94faaSDavid Teigland #include "rgrp.h" 30b3b94faaSDavid Teigland #include "trans.h" 315c676f6dSSteven Whitehouse #include "util.h" 3263997775SSteven Whitehouse #include "trace_gfs2.h" 33b3b94faaSDavid Teigland 349b9107a5SSteven Whitehouse /** 359b9107a5SSteven Whitehouse * gfs2_pin - Pin a buffer in memory 369b9107a5SSteven Whitehouse * @sdp: The superblock 379b9107a5SSteven Whitehouse * @bh: The buffer to be pinned 389b9107a5SSteven Whitehouse * 399b9107a5SSteven Whitehouse * The log lock must be held when calling this function 409b9107a5SSteven Whitehouse */ 41767f433fSSteven Whitehouse void gfs2_pin(struct gfs2_sbd *sdp, struct buffer_head *bh) 429b9107a5SSteven Whitehouse { 439b9107a5SSteven Whitehouse struct gfs2_bufdata *bd; 449b9107a5SSteven Whitehouse 4529687a2aSSteven Whitehouse BUG_ON(!current->journal_info); 469b9107a5SSteven Whitehouse 479b9107a5SSteven Whitehouse clear_buffer_dirty(bh); 489b9107a5SSteven Whitehouse if (test_set_buffer_pinned(bh)) 499b9107a5SSteven Whitehouse gfs2_assert_withdraw(sdp, 0); 509b9107a5SSteven Whitehouse if (!buffer_uptodate(bh)) 519b9107a5SSteven Whitehouse gfs2_io_error_bh(sdp, bh); 529b9107a5SSteven Whitehouse bd = bh->b_private; 539b9107a5SSteven Whitehouse /* If this buffer is in the AIL and it has already been written 549b9107a5SSteven Whitehouse * to in-place disk block, remove it from the AIL. 559b9107a5SSteven Whitehouse */ 56c618e87aSSteven Whitehouse spin_lock(&sdp->sd_ail_lock); 5716ca9412SBenjamin Marzinski if (bd->bd_tr) 5816ca9412SBenjamin Marzinski list_move(&bd->bd_ail_st_list, &bd->bd_tr->tr_ail2_list); 59c618e87aSSteven Whitehouse spin_unlock(&sdp->sd_ail_lock); 609b9107a5SSteven Whitehouse get_bh(bh); 615e687eacSBenjamin Marzinski atomic_inc(&sdp->sd_log_pinned); 6263997775SSteven Whitehouse trace_gfs2_pin(bd, 1); 639b9107a5SSteven Whitehouse } 649b9107a5SSteven Whitehouse 657c9ca621SBob Peterson static bool buffer_is_rgrp(const struct gfs2_bufdata *bd) 667c9ca621SBob Peterson { 677c9ca621SBob Peterson return bd->bd_gl->gl_name.ln_type == LM_TYPE_RGRP; 687c9ca621SBob Peterson } 697c9ca621SBob Peterson 707c9ca621SBob Peterson static void maybe_release_space(struct gfs2_bufdata *bd) 717c9ca621SBob Peterson { 727c9ca621SBob Peterson struct gfs2_glock *gl = bd->bd_gl; 7315562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 747c9ca621SBob Peterson struct gfs2_rgrpd *rgd = gl->gl_object; 757c9ca621SBob Peterson unsigned int index = bd->bd_bh->b_blocknr - gl->gl_name.ln_number; 767c9ca621SBob Peterson struct gfs2_bitmap *bi = rgd->rd_bits + index; 777c9ca621SBob Peterson 785a7c6690SFabian Frederick if (bi->bi_clone == NULL) 797c9ca621SBob Peterson return; 807c9ca621SBob Peterson if (sdp->sd_args.ar_discard) 8166fc061bSSteven Whitehouse gfs2_rgrp_send_discards(sdp, rgd->rd_data0, bd->bd_bh, bi, 1, NULL); 827c9ca621SBob Peterson memcpy(bi->bi_clone + bi->bi_offset, 837c9ca621SBob Peterson bd->bd_bh->b_data + bi->bi_offset, bi->bi_len); 847c9ca621SBob Peterson clear_bit(GBF_FULL, &bi->bi_flags); 857c9ca621SBob Peterson rgd->rd_free_clone = rgd->rd_free; 865ea5050cSBob Peterson rgd->rd_extfail_pt = rgd->rd_free; 877c9ca621SBob Peterson } 887c9ca621SBob Peterson 899b9107a5SSteven Whitehouse /** 909b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 919b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 929b9107a5SSteven Whitehouse * @bh: The buffer to unpin 939b9107a5SSteven Whitehouse * @ai: 9429687a2aSSteven Whitehouse * @flags: The inode dirty flags 959b9107a5SSteven Whitehouse * 969b9107a5SSteven Whitehouse */ 979b9107a5SSteven Whitehouse 989b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 9916ca9412SBenjamin Marzinski struct gfs2_trans *tr) 1009b9107a5SSteven Whitehouse { 1019b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1029b9107a5SSteven Whitehouse 10329687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10429687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1059b9107a5SSteven Whitehouse 1069b9107a5SSteven Whitehouse lock_buffer(bh); 1079b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1089b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1099b9107a5SSteven Whitehouse 1107c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1117c9ca621SBob Peterson maybe_release_space(bd); 1127c9ca621SBob Peterson 113d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 11416ca9412SBenjamin Marzinski if (bd->bd_tr) { 1159b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1169b9107a5SSteven Whitehouse brelse(bh); 1179b9107a5SSteven Whitehouse } else { 1189b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1199b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1209b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1219b9107a5SSteven Whitehouse } 12216ca9412SBenjamin Marzinski bd->bd_tr = tr; 12316ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 124d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 125d6a079e8SDave Chinner 12629687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 12763997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1289b9107a5SSteven Whitehouse unlock_buffer(bh); 1295e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1309b9107a5SSteven Whitehouse } 1319b9107a5SSteven Whitehouse 132e8c92ed7SSteven Whitehouse static void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13316615be1SSteven Whitehouse { 134e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 135e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 136e8c92ed7SSteven Whitehouse 137e8c92ed7SSteven Whitehouse if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) { 138e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 139e8c92ed7SSteven Whitehouse sdp->sd_log_flush_wrapped = 1; 140e8c92ed7SSteven Whitehouse } 14116615be1SSteven Whitehouse } 14216615be1SSteven Whitehouse 143e8c92ed7SSteven Whitehouse static u64 gfs2_log_bmap(struct gfs2_sbd *sdp) 14416615be1SSteven Whitehouse { 145e8c92ed7SSteven Whitehouse unsigned int lbn = sdp->sd_log_flush_head; 146e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 147e8c92ed7SSteven Whitehouse u64 block; 14816615be1SSteven Whitehouse 149b50f227bSSteven Whitehouse list_for_each_entry(je, &sdp->sd_jdesc->extent_list, list) { 150b50f227bSSteven Whitehouse if ((lbn >= je->lblock) && (lbn < (je->lblock + je->blocks))) { 151e8c92ed7SSteven Whitehouse block = je->dblock + lbn - je->lblock; 15247ac5537SSteven Whitehouse gfs2_log_incr_head(sdp); 153e8c92ed7SSteven Whitehouse return block; 154e8c92ed7SSteven Whitehouse } 155e8c92ed7SSteven Whitehouse } 15647ac5537SSteven Whitehouse 157e8c92ed7SSteven Whitehouse return -1; 15847ac5537SSteven Whitehouse } 15947ac5537SSteven Whitehouse 16047ac5537SSteven Whitehouse /** 161e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 162e8c92ed7SSteven Whitehouse * @sdp: The superblock 163e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 164e8c92ed7SSteven Whitehouse * @error: The i/o status 165e8c92ed7SSteven Whitehouse * 166e8c92ed7SSteven Whitehouse * This finds the relavent buffers and unlocks then and sets the 167e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 168e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 169e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 170e8c92ed7SSteven Whitehouse */ 171e8c92ed7SSteven Whitehouse 172e8c92ed7SSteven Whitehouse static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, struct bio_vec *bvec, 173e8c92ed7SSteven Whitehouse int 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 197e8c92ed7SSteven Whitehouse * @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; 21147ac5537SSteven Whitehouse 2124246a0b6SChristoph Hellwig if (bio->bi_error) { 2134246a0b6SChristoph Hellwig sdp->sd_log_error = bio->bi_error; 2144246a0b6SChristoph Hellwig fs_err(sdp, "Error %d writing to log\n", bio->bi_error); 215e8c92ed7SSteven Whitehouse } 216e8c92ed7SSteven Whitehouse 217e97e548bSSteven Whitehouse bio_for_each_segment_all(bvec, bio, i) { 218e8c92ed7SSteven Whitehouse page = bvec->bv_page; 219e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2204246a0b6SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_error); 221e8c92ed7SSteven Whitehouse else 222e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 223e8c92ed7SSteven Whitehouse } 224e8c92ed7SSteven Whitehouse 225e8c92ed7SSteven Whitehouse bio_put(bio); 22647ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 22747ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 22847ac5537SSteven Whitehouse } 22947ac5537SSteven Whitehouse 23047ac5537SSteven Whitehouse /** 231e8c92ed7SSteven Whitehouse * gfs2_log_flush_bio - Submit any pending log bio 232e8c92ed7SSteven Whitehouse * @sdp: The superblock 233e1b1afa6SMike Christie * @op: REQ_OP 234ef295ecfSChristoph Hellwig * @op_flags: req_flag_bits 235e8c92ed7SSteven Whitehouse * 236e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 237e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 238e8c92ed7SSteven Whitehouse */ 239e8c92ed7SSteven Whitehouse 240e1b1afa6SMike Christie void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int op, int op_flags) 241e8c92ed7SSteven Whitehouse { 242e8c92ed7SSteven Whitehouse if (sdp->sd_log_bio) { 243e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 244e1b1afa6SMike Christie bio_set_op_attrs(sdp->sd_log_bio, op, op_flags); 2454e49ea4aSMike Christie submit_bio(sdp->sd_log_bio); 246e8c92ed7SSteven Whitehouse sdp->sd_log_bio = NULL; 247e8c92ed7SSteven Whitehouse } 248e8c92ed7SSteven Whitehouse } 249e8c92ed7SSteven Whitehouse 250e8c92ed7SSteven Whitehouse /** 251e8c92ed7SSteven Whitehouse * gfs2_log_alloc_bio - Allocate a new bio for log writing 252e8c92ed7SSteven Whitehouse * @sdp: The superblock 253e8c92ed7SSteven Whitehouse * @blkno: The next device block number we want to write to 254e8c92ed7SSteven Whitehouse * 255e8c92ed7SSteven Whitehouse * This should never be called when there is a cached bio in the 256e8c92ed7SSteven Whitehouse * super block. When it returns, there will be a cached bio in the 257e8c92ed7SSteven Whitehouse * super block which will have as many bio_vecs as the device is 258e8c92ed7SSteven Whitehouse * happy to handle. 259e8c92ed7SSteven Whitehouse * 260e8c92ed7SSteven Whitehouse * Returns: Newly allocated bio 261e8c92ed7SSteven Whitehouse */ 262e8c92ed7SSteven Whitehouse 263e8c92ed7SSteven Whitehouse static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno) 264e8c92ed7SSteven Whitehouse { 265e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 266e8c92ed7SSteven Whitehouse struct bio *bio; 267e8c92ed7SSteven Whitehouse 268e8c92ed7SSteven Whitehouse BUG_ON(sdp->sd_log_bio); 269e8c92ed7SSteven Whitehouse 270b54ffb73SKent Overstreet bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); 2714f024f37SKent Overstreet bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); 272e8c92ed7SSteven Whitehouse bio->bi_bdev = sb->s_bdev; 273e8c92ed7SSteven Whitehouse bio->bi_end_io = gfs2_end_log_write; 274e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 275e8c92ed7SSteven Whitehouse 276e8c92ed7SSteven Whitehouse sdp->sd_log_bio = bio; 277e8c92ed7SSteven Whitehouse 278e8c92ed7SSteven Whitehouse return bio; 279e8c92ed7SSteven Whitehouse } 280e8c92ed7SSteven Whitehouse 281e8c92ed7SSteven Whitehouse /** 282e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 283e8c92ed7SSteven Whitehouse * @sdp: The superblock 284e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 285e8c92ed7SSteven Whitehouse * 286e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 287e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 288e8c92ed7SSteven Whitehouse * device. If there is not a cached bio, or we just flushed it, then 289e8c92ed7SSteven Whitehouse * allocate a new one. 290e8c92ed7SSteven Whitehouse * 291e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 292e8c92ed7SSteven Whitehouse */ 293e8c92ed7SSteven Whitehouse 294e8c92ed7SSteven Whitehouse static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno) 295e8c92ed7SSteven Whitehouse { 296e8c92ed7SSteven Whitehouse struct bio *bio = sdp->sd_log_bio; 297e8c92ed7SSteven Whitehouse u64 nblk; 298e8c92ed7SSteven Whitehouse 299e8c92ed7SSteven Whitehouse if (bio) { 300f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 301e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 302e8c92ed7SSteven Whitehouse if (blkno == nblk) 303e8c92ed7SSteven Whitehouse return bio; 304e1b1afa6SMike Christie gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0); 305e8c92ed7SSteven Whitehouse } 306e8c92ed7SSteven Whitehouse 307e8c92ed7SSteven Whitehouse return gfs2_log_alloc_bio(sdp, blkno); 308e8c92ed7SSteven Whitehouse } 309e8c92ed7SSteven Whitehouse 310e8c92ed7SSteven Whitehouse 311e8c92ed7SSteven Whitehouse /** 312e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31347ac5537SSteven Whitehouse * @sdp: the filesystem 314e8c92ed7SSteven Whitehouse * @page: the page to write 315e8c92ed7SSteven Whitehouse * @size: the size of the data to write 316e8c92ed7SSteven Whitehouse * @offset: the offset within the page 31747ac5537SSteven Whitehouse * 318e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 319e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 320e8c92ed7SSteven Whitehouse * then add the page segment to that. 32147ac5537SSteven Whitehouse */ 32247ac5537SSteven Whitehouse 323e8c92ed7SSteven Whitehouse static void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 324e8c92ed7SSteven Whitehouse unsigned size, unsigned offset) 32547ac5537SSteven Whitehouse { 326e8c92ed7SSteven Whitehouse u64 blkno = gfs2_log_bmap(sdp); 327e8c92ed7SSteven Whitehouse struct bio *bio; 328e8c92ed7SSteven Whitehouse int ret; 32947ac5537SSteven Whitehouse 330e8c92ed7SSteven Whitehouse bio = gfs2_log_get_bio(sdp, blkno); 331e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 332e8c92ed7SSteven Whitehouse if (ret == 0) { 333e1b1afa6SMike Christie gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0); 334e8c92ed7SSteven Whitehouse bio = gfs2_log_alloc_bio(sdp, blkno); 335e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 336e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 337e8c92ed7SSteven Whitehouse } 33847ac5537SSteven Whitehouse } 33916615be1SSteven Whitehouse 340e8c92ed7SSteven Whitehouse /** 341e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 342e8c92ed7SSteven Whitehouse * @sdp: The super block 343e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 344e8c92ed7SSteven Whitehouse * 345e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 346e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 347e8c92ed7SSteven Whitehouse * completed. 348e8c92ed7SSteven Whitehouse */ 349e8c92ed7SSteven Whitehouse 350e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 35116615be1SSteven Whitehouse { 352e8c92ed7SSteven Whitehouse gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh)); 353e8c92ed7SSteven Whitehouse } 354e8c92ed7SSteven Whitehouse 355e8c92ed7SSteven Whitehouse /** 356e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 357e8c92ed7SSteven Whitehouse * @sdp: The superblock 358e8c92ed7SSteven Whitehouse * @page: The struct page 359e8c92ed7SSteven Whitehouse * 360e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 361e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 362e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 363e8c92ed7SSteven Whitehouse * the page may be freed at any time. 364e8c92ed7SSteven Whitehouse */ 365e8c92ed7SSteven Whitehouse 366e8c92ed7SSteven Whitehouse void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 367e8c92ed7SSteven Whitehouse { 368e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 369e8c92ed7SSteven Whitehouse gfs2_log_write(sdp, page, sb->s_blocksize, 0); 370e8c92ed7SSteven Whitehouse } 371e8c92ed7SSteven Whitehouse 372dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 373dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 374e8c92ed7SSteven Whitehouse { 375144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 376e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 377e8c92ed7SSteven Whitehouse clear_page(ld); 37816615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 37916615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 38016615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 38116615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 382dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 383dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 38416615be1SSteven Whitehouse ld->ld_data2 = 0; 385e8c92ed7SSteven Whitehouse return page; 38616615be1SSteven Whitehouse } 38716615be1SSteven Whitehouse 388dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 389dad30e90SSteven Whitehouse { 390dad30e90SSteven Whitehouse void *kaddr; 391dad30e90SSteven Whitehouse __be32 *ptr; 392dad30e90SSteven Whitehouse 393dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 394dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 395dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 396dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 397dad30e90SSteven Whitehouse set_buffer_escaped(bh); 398dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 399dad30e90SSteven Whitehouse } 400dad30e90SSteven Whitehouse 4017f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 4027f63257dSBenjamin Marzinski { 4037f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 4047f63257dSBenjamin Marzinski 4057f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 4067f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 4077f63257dSBenjamin Marzinski 4087f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 4097f63257dSBenjamin Marzinski return -1; 4107f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 4117f63257dSBenjamin Marzinski return 1; 4127f63257dSBenjamin Marzinski return 0; 4137f63257dSBenjamin Marzinski } 4147f63257dSBenjamin Marzinski 415dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 416dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 417dad30e90SSteven Whitehouse bool is_databuf) 418b3b94faaSDavid Teigland { 419b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 420b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 421e8c92ed7SSteven Whitehouse struct page *page; 422b3b94faaSDavid Teigland unsigned int num; 423b3b94faaSDavid Teigland unsigned n; 424b3b94faaSDavid Teigland __be64 *ptr; 425b3b94faaSDavid Teigland 426905d2aefSBob Peterson gfs2_log_lock(sdp); 4277f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 428c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 429b3b94faaSDavid Teigland while(total) { 430b3b94faaSDavid Teigland num = total; 431b3b94faaSDavid Teigland if (total > limit) 432b3b94faaSDavid Teigland num = limit; 433905d2aefSBob Peterson gfs2_log_unlock(sdp); 4344a586812SBob Peterson page = gfs2_get_log_desc(sdp, 4354a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 4364a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 437e8c92ed7SSteven Whitehouse ld = page_address(page); 438905d2aefSBob Peterson gfs2_log_lock(sdp); 439e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 440b3b94faaSDavid Teigland 441b3b94faaSDavid Teigland n = 0; 442c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 443b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 444dad30e90SSteven Whitehouse if (is_databuf) { 445dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 446dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 447dad30e90SSteven Whitehouse } 448b3b94faaSDavid Teigland if (++n >= num) 449b3b94faaSDavid Teigland break; 450b3b94faaSDavid Teigland } 451b3b94faaSDavid Teigland 452905d2aefSBob Peterson gfs2_log_unlock(sdp); 453e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 454905d2aefSBob Peterson gfs2_log_lock(sdp); 455b3b94faaSDavid Teigland 456b3b94faaSDavid Teigland n = 0; 457c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 45816615be1SSteven Whitehouse get_bh(bd2->bd_bh); 459905d2aefSBob Peterson gfs2_log_unlock(sdp); 46016615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 461dad30e90SSteven Whitehouse 462dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 463dad30e90SSteven Whitehouse void *kaddr; 464dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 465dad30e90SSteven Whitehouse ptr = page_address(page); 466dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 467dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 468dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 469dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 470dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 471dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 472dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 473dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 474dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 475dad30e90SSteven Whitehouse } else { 476e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 477dad30e90SSteven Whitehouse } 478905d2aefSBob Peterson gfs2_log_lock(sdp); 479b3b94faaSDavid Teigland if (++n >= num) 480b3b94faaSDavid Teigland break; 481b3b94faaSDavid Teigland } 482b3b94faaSDavid Teigland 483905d2aefSBob Peterson BUG_ON(total < num); 484b3b94faaSDavid Teigland total -= num; 485b3b94faaSDavid Teigland } 486905d2aefSBob Peterson gfs2_log_unlock(sdp); 487b3b94faaSDavid Teigland } 488b3b94faaSDavid Teigland 489d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 490dad30e90SSteven Whitehouse { 491dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 492022ef4feSSteven Whitehouse unsigned int nbuf; 493d69a3c65SSteven Whitehouse if (tr == NULL) 494d69a3c65SSteven Whitehouse return; 495022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 496022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 497dad30e90SSteven Whitehouse } 498dad30e90SSteven Whitehouse 49916ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 500b3b94faaSDavid Teigland { 501d69a3c65SSteven Whitehouse struct list_head *head; 502b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 503b3b94faaSDavid Teigland 504d69a3c65SSteven Whitehouse if (tr == NULL) 50516ca9412SBenjamin Marzinski return; 50616ca9412SBenjamin Marzinski 507d69a3c65SSteven Whitehouse head = &tr->tr_buf; 508b3b94faaSDavid Teigland while (!list_empty(head)) { 509c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 510c0752aa7SBob Peterson list_del_init(&bd->bd_list); 51116ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 512b3b94faaSDavid Teigland } 513b3b94faaSDavid Teigland } 514b3b94faaSDavid Teigland 515b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 51655167622SAl Viro struct gfs2_log_header_host *head, int pass) 517b3b94faaSDavid Teigland { 518b3b94faaSDavid Teigland if (pass != 0) 519b3b94faaSDavid Teigland return; 520b3b94faaSDavid Teigland 521a17d758bSBob Peterson jd->jd_found_blocks = 0; 522a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 523b3b94faaSDavid Teigland } 524b3b94faaSDavid Teigland 525b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 526b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 527b3b94faaSDavid Teigland int pass) 528b3b94faaSDavid Teigland { 529feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 530feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 5315c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 532b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 533b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 534cd915493SSteven Whitehouse u64 blkno; 535b3b94faaSDavid Teigland int error = 0; 536b3b94faaSDavid Teigland 537b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 538b3b94faaSDavid Teigland return 0; 539b3b94faaSDavid Teigland 540e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 541b3b94faaSDavid Teigland 542e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 543b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 544b3b94faaSDavid Teigland 545a17d758bSBob Peterson jd->jd_found_blocks++; 546b3b94faaSDavid Teigland 547a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 548b3b94faaSDavid Teigland continue; 549b3b94faaSDavid Teigland 550b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 551b3b94faaSDavid Teigland if (error) 552b3b94faaSDavid Teigland return error; 553b3b94faaSDavid Teigland 554b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 555b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 556b3b94faaSDavid Teigland 557b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 558b3b94faaSDavid Teigland error = -EIO; 559b3b94faaSDavid Teigland else 560b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 561b3b94faaSDavid Teigland 562b3b94faaSDavid Teigland brelse(bh_log); 563b3b94faaSDavid Teigland brelse(bh_ip); 564b3b94faaSDavid Teigland 565b3b94faaSDavid Teigland if (error) 566b3b94faaSDavid Teigland break; 567b3b94faaSDavid Teigland 568a17d758bSBob Peterson jd->jd_replayed_blocks++; 569b3b94faaSDavid Teigland } 570b3b94faaSDavid Teigland 571b3b94faaSDavid Teigland return error; 572b3b94faaSDavid Teigland } 573b3b94faaSDavid Teigland 5747c0ef28aSSteven Whitehouse /** 5757c0ef28aSSteven Whitehouse * gfs2_meta_sync - Sync all buffers associated with a glock 5767c0ef28aSSteven Whitehouse * @gl: The glock 5777c0ef28aSSteven Whitehouse * 5787c0ef28aSSteven Whitehouse */ 5797c0ef28aSSteven Whitehouse 5807c0ef28aSSteven Whitehouse static void gfs2_meta_sync(struct gfs2_glock *gl) 5817c0ef28aSSteven Whitehouse { 5827c0ef28aSSteven Whitehouse struct address_space *mapping = gfs2_glock2aspace(gl); 58315562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 5847c0ef28aSSteven Whitehouse int error; 5857c0ef28aSSteven Whitehouse 58670d4ee94SSteven Whitehouse if (mapping == NULL) 58770d4ee94SSteven Whitehouse mapping = &sdp->sd_aspace; 58870d4ee94SSteven Whitehouse 5897c0ef28aSSteven Whitehouse filemap_fdatawrite(mapping); 5907c0ef28aSSteven Whitehouse error = filemap_fdatawait(mapping); 5917c0ef28aSSteven Whitehouse 5927c0ef28aSSteven Whitehouse if (error) 59315562c43SBob Peterson gfs2_io_error(gl->gl_name.ln_sbd); 5947c0ef28aSSteven Whitehouse } 5957c0ef28aSSteven Whitehouse 596b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 597b3b94faaSDavid Teigland { 598feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 599feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 600b3b94faaSDavid Teigland 601b3b94faaSDavid Teigland if (error) { 6027276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 603b3b94faaSDavid Teigland return; 604b3b94faaSDavid Teigland } 605b3b94faaSDavid Teigland if (pass != 1) 606b3b94faaSDavid Teigland return; 607b3b94faaSDavid Teigland 6087276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 609b3b94faaSDavid Teigland 610b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 611a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 612b3b94faaSDavid Teigland } 613b3b94faaSDavid Teigland 614d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 615b3b94faaSDavid Teigland { 616b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 617b3b94faaSDavid Teigland unsigned int offset; 618b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 61982e86087SSteven Whitehouse struct gfs2_bufdata *bd; 620e8c92ed7SSteven Whitehouse struct page *page; 621dad30e90SSteven Whitehouse unsigned int length; 622b3b94faaSDavid Teigland 6235d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 624b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 625b3b94faaSDavid Teigland return; 626b3b94faaSDavid Teigland 627dad30e90SSteven Whitehouse length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); 628dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 629b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 630b3b94faaSDavid Teigland 631c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 632b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 633b3b94faaSDavid Teigland 634cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 635b3b94faaSDavid Teigland 636e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 637e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 638e8c92ed7SSteven Whitehouse mh = page_address(page); 639e8c92ed7SSteven Whitehouse clear_page(mh); 640b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 641e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 642e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 643b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 644b3b94faaSDavid Teigland } 645b3b94faaSDavid Teigland 646e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 647cd915493SSteven Whitehouse offset += sizeof(u64); 648b3b94faaSDavid Teigland } 649b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 650b3b94faaSDavid Teigland 651e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 652b3b94faaSDavid Teigland } 653b3b94faaSDavid Teigland 65416ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 655f42ab085SSteven Whitehouse { 656f42ab085SSteven Whitehouse struct list_head *head = &sdp->sd_log_le_revoke; 657f42ab085SSteven Whitehouse struct gfs2_bufdata *bd; 658f42ab085SSteven Whitehouse struct gfs2_glock *gl; 659f42ab085SSteven Whitehouse 660f42ab085SSteven Whitehouse while (!list_empty(head)) { 661c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 662c0752aa7SBob Peterson list_del_init(&bd->bd_list); 663f42ab085SSteven Whitehouse gl = bd->bd_gl; 664f42ab085SSteven Whitehouse atomic_dec(&gl->gl_revokes); 665f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 666f42ab085SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd); 667f42ab085SSteven Whitehouse } 668f42ab085SSteven Whitehouse } 669f42ab085SSteven Whitehouse 670b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 67155167622SAl Viro struct gfs2_log_header_host *head, int pass) 672b3b94faaSDavid Teigland { 673b3b94faaSDavid Teigland if (pass != 0) 674b3b94faaSDavid Teigland return; 675b3b94faaSDavid Teigland 676a17d758bSBob Peterson jd->jd_found_revokes = 0; 677a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 678b3b94faaSDavid Teigland } 679b3b94faaSDavid Teigland 680b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 681b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 682b3b94faaSDavid Teigland int pass) 683b3b94faaSDavid Teigland { 684feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 685b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 686b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 687b3b94faaSDavid Teigland struct buffer_head *bh; 688b3b94faaSDavid Teigland unsigned int offset; 689cd915493SSteven Whitehouse u64 blkno; 690b3b94faaSDavid Teigland int first = 1; 691b3b94faaSDavid Teigland int error; 692b3b94faaSDavid Teigland 693b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 694b3b94faaSDavid Teigland return 0; 695b3b94faaSDavid Teigland 696b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 697b3b94faaSDavid Teigland 698e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 699b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 700b3b94faaSDavid Teigland if (error) 701b3b94faaSDavid Teigland return error; 702b3b94faaSDavid Teigland 703b3b94faaSDavid Teigland if (!first) 704b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 705b3b94faaSDavid Teigland 706cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 707b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 708b3b94faaSDavid Teigland 709a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 7103ad62e87SBob Peterson if (error < 0) { 7113ad62e87SBob Peterson brelse(bh); 712b3b94faaSDavid Teigland return error; 7133ad62e87SBob Peterson } 714b3b94faaSDavid Teigland else if (error) 715a17d758bSBob Peterson jd->jd_found_revokes++; 716b3b94faaSDavid Teigland 717b3b94faaSDavid Teigland if (!--revokes) 718b3b94faaSDavid Teigland break; 719cd915493SSteven Whitehouse offset += sizeof(u64); 720b3b94faaSDavid Teigland } 721b3b94faaSDavid Teigland 722b3b94faaSDavid Teigland brelse(bh); 723b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 724b3b94faaSDavid Teigland first = 0; 725b3b94faaSDavid Teigland } 726b3b94faaSDavid Teigland 727b3b94faaSDavid Teigland return 0; 728b3b94faaSDavid Teigland } 729b3b94faaSDavid Teigland 730b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 731b3b94faaSDavid Teigland { 732feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 733b3b94faaSDavid Teigland 734b3b94faaSDavid Teigland if (error) { 735a17d758bSBob Peterson gfs2_revoke_clean(jd); 736b3b94faaSDavid Teigland return; 737b3b94faaSDavid Teigland } 738b3b94faaSDavid Teigland if (pass != 1) 739b3b94faaSDavid Teigland return; 740b3b94faaSDavid Teigland 741b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 742a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 743b3b94faaSDavid Teigland 744a17d758bSBob Peterson gfs2_revoke_clean(jd); 745b3b94faaSDavid Teigland } 746b3b94faaSDavid Teigland 74718ec7d5cSSteven Whitehouse /** 74818ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 74918ec7d5cSSteven Whitehouse * 75018ec7d5cSSteven Whitehouse */ 751d7b616e2SSteven Whitehouse 752d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 753b3b94faaSDavid Teigland { 754022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 755022ef4feSSteven Whitehouse unsigned int nbuf; 756d69a3c65SSteven Whitehouse if (tr == NULL) 757d69a3c65SSteven Whitehouse return; 758022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 759022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 760b3b94faaSDavid Teigland } 761b3b94faaSDavid Teigland 76218ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 76318ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 76418ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 76518ec7d5cSSteven Whitehouse { 766feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 7675c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 76818ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 76918ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 770cd915493SSteven Whitehouse u64 blkno; 771cd915493SSteven Whitehouse u64 esc; 77218ec7d5cSSteven Whitehouse int error = 0; 77318ec7d5cSSteven Whitehouse 77418ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 77518ec7d5cSSteven Whitehouse return 0; 77618ec7d5cSSteven Whitehouse 777e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 778e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 77918ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 78018ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 78118ec7d5cSSteven Whitehouse 782a17d758bSBob Peterson jd->jd_found_blocks++; 78318ec7d5cSSteven Whitehouse 784a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 78518ec7d5cSSteven Whitehouse continue; 78618ec7d5cSSteven Whitehouse 78718ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 78818ec7d5cSSteven Whitehouse if (error) 78918ec7d5cSSteven Whitehouse return error; 79018ec7d5cSSteven Whitehouse 79118ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 79218ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 79318ec7d5cSSteven Whitehouse 79418ec7d5cSSteven Whitehouse /* Unescape */ 79518ec7d5cSSteven Whitehouse if (esc) { 79618ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 79718ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 79818ec7d5cSSteven Whitehouse } 79918ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 80018ec7d5cSSteven Whitehouse 80118ec7d5cSSteven Whitehouse brelse(bh_log); 80218ec7d5cSSteven Whitehouse brelse(bh_ip); 80318ec7d5cSSteven Whitehouse 804a17d758bSBob Peterson jd->jd_replayed_blocks++; 80518ec7d5cSSteven Whitehouse } 80618ec7d5cSSteven Whitehouse 80718ec7d5cSSteven Whitehouse return error; 80818ec7d5cSSteven Whitehouse } 80918ec7d5cSSteven Whitehouse 81018ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 81118ec7d5cSSteven Whitehouse 81218ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 81318ec7d5cSSteven Whitehouse { 814feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 815feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 81618ec7d5cSSteven Whitehouse 81718ec7d5cSSteven Whitehouse if (error) { 8187276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 81918ec7d5cSSteven Whitehouse return; 82018ec7d5cSSteven Whitehouse } 82118ec7d5cSSteven Whitehouse if (pass != 1) 82218ec7d5cSSteven Whitehouse return; 82318ec7d5cSSteven Whitehouse 82418ec7d5cSSteven Whitehouse /* data sync? */ 8257276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 82618ec7d5cSSteven Whitehouse 82718ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 828a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 82918ec7d5cSSteven Whitehouse } 83018ec7d5cSSteven Whitehouse 83116ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 83218ec7d5cSSteven Whitehouse { 833d69a3c65SSteven Whitehouse struct list_head *head; 83418ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 83518ec7d5cSSteven Whitehouse 836d69a3c65SSteven Whitehouse if (tr == NULL) 83716ca9412SBenjamin Marzinski return; 83816ca9412SBenjamin Marzinski 839d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 84018ec7d5cSSteven Whitehouse while (!list_empty(head)) { 841c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 842c0752aa7SBob Peterson list_del_init(&bd->bd_list); 84316ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 84418ec7d5cSSteven Whitehouse } 84518ec7d5cSSteven Whitehouse } 84618ec7d5cSSteven Whitehouse 84718ec7d5cSSteven Whitehouse 848b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 849b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 850b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 851b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 852b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 853b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 854ea67eedbSSteven Whitehouse .lo_name = "buf", 855b3b94faaSDavid Teigland }; 856b3b94faaSDavid Teigland 857b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 858b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 859f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 860b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 861b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 862b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 863ea67eedbSSteven Whitehouse .lo_name = "revoke", 864b3b94faaSDavid Teigland }; 865b3b94faaSDavid Teigland 866b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 867b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 86818ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 86918ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 87018ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 871ea67eedbSSteven Whitehouse .lo_name = "databuf", 872b3b94faaSDavid Teigland }; 873b3b94faaSDavid Teigland 874b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 875b3b94faaSDavid Teigland &gfs2_databuf_lops, 87616615be1SSteven Whitehouse &gfs2_buf_lops, 87716615be1SSteven Whitehouse &gfs2_revoke_lops, 878ea67eedbSSteven Whitehouse NULL, 879b3b94faaSDavid Teigland }; 880b3b94faaSDavid Teigland 881