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; 746f6597baSAndreas Gruenbacher struct gfs2_rgrpd *rgd = gfs2_glock2rgrp(gl); 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 137722f6f62SBob Peterson if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) 138e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 13916615be1SSteven Whitehouse } 14016615be1SSteven Whitehouse 141e8c92ed7SSteven Whitehouse static u64 gfs2_log_bmap(struct gfs2_sbd *sdp) 14216615be1SSteven Whitehouse { 143e8c92ed7SSteven Whitehouse unsigned int lbn = sdp->sd_log_flush_head; 144e8c92ed7SSteven Whitehouse struct gfs2_journal_extent *je; 145e8c92ed7SSteven Whitehouse u64 block; 14616615be1SSteven Whitehouse 147b50f227bSSteven Whitehouse list_for_each_entry(je, &sdp->sd_jdesc->extent_list, list) { 148b50f227bSSteven Whitehouse if ((lbn >= je->lblock) && (lbn < (je->lblock + je->blocks))) { 149e8c92ed7SSteven Whitehouse block = je->dblock + lbn - je->lblock; 15047ac5537SSteven Whitehouse gfs2_log_incr_head(sdp); 151e8c92ed7SSteven Whitehouse return block; 152e8c92ed7SSteven Whitehouse } 153e8c92ed7SSteven Whitehouse } 15447ac5537SSteven Whitehouse 155e8c92ed7SSteven Whitehouse return -1; 15647ac5537SSteven Whitehouse } 15747ac5537SSteven Whitehouse 15847ac5537SSteven Whitehouse /** 159e8c92ed7SSteven Whitehouse * gfs2_end_log_write_bh - end log write of pagecache data with buffers 160e8c92ed7SSteven Whitehouse * @sdp: The superblock 161e8c92ed7SSteven Whitehouse * @bvec: The bio_vec 162e8c92ed7SSteven Whitehouse * @error: The i/o status 163e8c92ed7SSteven Whitehouse * 164e8c92ed7SSteven Whitehouse * This finds the relavent buffers and unlocks then and sets the 165e8c92ed7SSteven Whitehouse * error flag according to the status of the i/o request. This is 166e8c92ed7SSteven Whitehouse * used when the log is writing data which has an in-place version 167e8c92ed7SSteven Whitehouse * that is pinned in the pagecache. 168e8c92ed7SSteven Whitehouse */ 169e8c92ed7SSteven Whitehouse 170e8c92ed7SSteven Whitehouse static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, struct bio_vec *bvec, 171e8c92ed7SSteven Whitehouse int error) 172e8c92ed7SSteven Whitehouse { 173e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 174e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 175e8c92ed7SSteven Whitehouse unsigned size; 176e8c92ed7SSteven Whitehouse 177e8c92ed7SSteven Whitehouse bh = page_buffers(page); 178e8c92ed7SSteven Whitehouse size = bvec->bv_len; 179e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 180e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 181e8c92ed7SSteven Whitehouse do { 182e8c92ed7SSteven Whitehouse if (error) 183e8c92ed7SSteven Whitehouse set_buffer_write_io_error(bh); 184e8c92ed7SSteven Whitehouse unlock_buffer(bh); 185e8c92ed7SSteven Whitehouse next = bh->b_this_page; 186e8c92ed7SSteven Whitehouse size -= bh->b_size; 187e8c92ed7SSteven Whitehouse brelse(bh); 188e8c92ed7SSteven Whitehouse bh = next; 189e8c92ed7SSteven Whitehouse } while(bh && size); 190e8c92ed7SSteven Whitehouse } 191e8c92ed7SSteven Whitehouse 192e8c92ed7SSteven Whitehouse /** 193e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 194e8c92ed7SSteven Whitehouse * @bio: The bio 195e8c92ed7SSteven Whitehouse * @error: Status of i/o request 196e8c92ed7SSteven Whitehouse * 197e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 198e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 199e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 20047ac5537SSteven Whitehouse * 20147ac5537SSteven Whitehouse */ 20247ac5537SSteven Whitehouse 2034246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 20447ac5537SSteven Whitehouse { 205e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 206e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 207e8c92ed7SSteven Whitehouse struct page *page; 208e8c92ed7SSteven Whitehouse int i; 20947ac5537SSteven Whitehouse 2104246a0b6SChristoph Hellwig if (bio->bi_error) { 2114246a0b6SChristoph Hellwig sdp->sd_log_error = bio->bi_error; 2124246a0b6SChristoph Hellwig fs_err(sdp, "Error %d writing to log\n", bio->bi_error); 213e8c92ed7SSteven Whitehouse } 214e8c92ed7SSteven Whitehouse 215e97e548bSSteven Whitehouse bio_for_each_segment_all(bvec, bio, i) { 216e8c92ed7SSteven Whitehouse page = bvec->bv_page; 217e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 2184246a0b6SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_error); 219e8c92ed7SSteven Whitehouse else 220e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 221e8c92ed7SSteven Whitehouse } 222e8c92ed7SSteven Whitehouse 223e8c92ed7SSteven Whitehouse bio_put(bio); 22447ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 22547ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 22647ac5537SSteven Whitehouse } 22747ac5537SSteven Whitehouse 22847ac5537SSteven Whitehouse /** 229e8c92ed7SSteven Whitehouse * gfs2_log_flush_bio - Submit any pending log bio 230e8c92ed7SSteven Whitehouse * @sdp: The superblock 231e1b1afa6SMike Christie * @op: REQ_OP 232ef295ecfSChristoph Hellwig * @op_flags: req_flag_bits 233e8c92ed7SSteven Whitehouse * 234e8c92ed7SSteven Whitehouse * Submit any pending part-built or full bio to the block device. If 235e8c92ed7SSteven Whitehouse * there is no pending bio, then this is a no-op. 236e8c92ed7SSteven Whitehouse */ 237e8c92ed7SSteven Whitehouse 238e1b1afa6SMike Christie void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int op, int op_flags) 239e8c92ed7SSteven Whitehouse { 240e8c92ed7SSteven Whitehouse if (sdp->sd_log_bio) { 241e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 242e1b1afa6SMike Christie bio_set_op_attrs(sdp->sd_log_bio, op, op_flags); 2434e49ea4aSMike Christie submit_bio(sdp->sd_log_bio); 244e8c92ed7SSteven Whitehouse sdp->sd_log_bio = NULL; 245e8c92ed7SSteven Whitehouse } 246e8c92ed7SSteven Whitehouse } 247e8c92ed7SSteven Whitehouse 248e8c92ed7SSteven Whitehouse /** 249e8c92ed7SSteven Whitehouse * gfs2_log_alloc_bio - Allocate a new bio for log writing 250e8c92ed7SSteven Whitehouse * @sdp: The superblock 251e8c92ed7SSteven Whitehouse * @blkno: The next device block number we want to write to 252e8c92ed7SSteven Whitehouse * 253e8c92ed7SSteven Whitehouse * This should never be called when there is a cached bio in the 254e8c92ed7SSteven Whitehouse * super block. When it returns, there will be a cached bio in the 255e8c92ed7SSteven Whitehouse * super block which will have as many bio_vecs as the device is 256e8c92ed7SSteven Whitehouse * happy to handle. 257e8c92ed7SSteven Whitehouse * 258e8c92ed7SSteven Whitehouse * Returns: Newly allocated bio 259e8c92ed7SSteven Whitehouse */ 260e8c92ed7SSteven Whitehouse 261e8c92ed7SSteven Whitehouse static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno) 262e8c92ed7SSteven Whitehouse { 263e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 264e8c92ed7SSteven Whitehouse struct bio *bio; 265e8c92ed7SSteven Whitehouse 266e8c92ed7SSteven Whitehouse BUG_ON(sdp->sd_log_bio); 267e8c92ed7SSteven Whitehouse 268b54ffb73SKent Overstreet bio = bio_alloc(GFP_NOIO, BIO_MAX_PAGES); 2694f024f37SKent Overstreet bio->bi_iter.bi_sector = blkno * (sb->s_blocksize >> 9); 270e8c92ed7SSteven Whitehouse bio->bi_bdev = sb->s_bdev; 271e8c92ed7SSteven Whitehouse bio->bi_end_io = gfs2_end_log_write; 272e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 273e8c92ed7SSteven Whitehouse 274e8c92ed7SSteven Whitehouse sdp->sd_log_bio = bio; 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 superblock 282e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 283e8c92ed7SSteven Whitehouse * 284e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 285e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 286e8c92ed7SSteven Whitehouse * device. If there is not a cached bio, or we just flushed it, then 287e8c92ed7SSteven Whitehouse * allocate a new one. 288e8c92ed7SSteven Whitehouse * 289e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 290e8c92ed7SSteven Whitehouse */ 291e8c92ed7SSteven Whitehouse 292e8c92ed7SSteven Whitehouse static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno) 293e8c92ed7SSteven Whitehouse { 294e8c92ed7SSteven Whitehouse struct bio *bio = sdp->sd_log_bio; 295e8c92ed7SSteven Whitehouse u64 nblk; 296e8c92ed7SSteven Whitehouse 297e8c92ed7SSteven Whitehouse if (bio) { 298f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 299e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 300e8c92ed7SSteven Whitehouse if (blkno == nblk) 301e8c92ed7SSteven Whitehouse return bio; 302e1b1afa6SMike Christie gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0); 303e8c92ed7SSteven Whitehouse } 304e8c92ed7SSteven Whitehouse 305e8c92ed7SSteven Whitehouse return gfs2_log_alloc_bio(sdp, blkno); 306e8c92ed7SSteven Whitehouse } 307e8c92ed7SSteven Whitehouse 308e8c92ed7SSteven Whitehouse 309e8c92ed7SSteven Whitehouse /** 310e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31147ac5537SSteven Whitehouse * @sdp: the filesystem 312e8c92ed7SSteven Whitehouse * @page: the page to write 313e8c92ed7SSteven Whitehouse * @size: the size of the data to write 314e8c92ed7SSteven Whitehouse * @offset: the offset within the page 31547ac5537SSteven Whitehouse * 316e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 317e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 318e8c92ed7SSteven Whitehouse * then add the page segment to that. 31947ac5537SSteven Whitehouse */ 32047ac5537SSteven Whitehouse 321e8c92ed7SSteven Whitehouse static void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 322e8c92ed7SSteven Whitehouse unsigned size, unsigned offset) 32347ac5537SSteven Whitehouse { 324e8c92ed7SSteven Whitehouse u64 blkno = gfs2_log_bmap(sdp); 325e8c92ed7SSteven Whitehouse struct bio *bio; 326e8c92ed7SSteven Whitehouse int ret; 32747ac5537SSteven Whitehouse 328e8c92ed7SSteven Whitehouse bio = gfs2_log_get_bio(sdp, blkno); 329e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 330e8c92ed7SSteven Whitehouse if (ret == 0) { 331e1b1afa6SMike Christie gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0); 332e8c92ed7SSteven Whitehouse bio = gfs2_log_alloc_bio(sdp, blkno); 333e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 334e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 335e8c92ed7SSteven Whitehouse } 33647ac5537SSteven Whitehouse } 33716615be1SSteven Whitehouse 338e8c92ed7SSteven Whitehouse /** 339e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 340e8c92ed7SSteven Whitehouse * @sdp: The super block 341e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 342e8c92ed7SSteven Whitehouse * 343e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 344e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 345e8c92ed7SSteven Whitehouse * completed. 346e8c92ed7SSteven Whitehouse */ 347e8c92ed7SSteven Whitehouse 348e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 34916615be1SSteven Whitehouse { 350e8c92ed7SSteven Whitehouse gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh)); 351e8c92ed7SSteven Whitehouse } 352e8c92ed7SSteven Whitehouse 353e8c92ed7SSteven Whitehouse /** 354e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 355e8c92ed7SSteven Whitehouse * @sdp: The superblock 356e8c92ed7SSteven Whitehouse * @page: The struct page 357e8c92ed7SSteven Whitehouse * 358e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 359e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 360e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 361e8c92ed7SSteven Whitehouse * the page may be freed at any time. 362e8c92ed7SSteven Whitehouse */ 363e8c92ed7SSteven Whitehouse 364e8c92ed7SSteven Whitehouse void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 365e8c92ed7SSteven Whitehouse { 366e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 367e8c92ed7SSteven Whitehouse gfs2_log_write(sdp, page, sb->s_blocksize, 0); 368e8c92ed7SSteven Whitehouse } 369e8c92ed7SSteven Whitehouse 370dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 371dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 372e8c92ed7SSteven Whitehouse { 373144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 374e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 375e8c92ed7SSteven Whitehouse clear_page(ld); 37616615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 37716615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 37816615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 37916615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 380dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 381dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 38216615be1SSteven Whitehouse ld->ld_data2 = 0; 383e8c92ed7SSteven Whitehouse return page; 38416615be1SSteven Whitehouse } 38516615be1SSteven Whitehouse 386dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 387dad30e90SSteven Whitehouse { 388dad30e90SSteven Whitehouse void *kaddr; 389dad30e90SSteven Whitehouse __be32 *ptr; 390dad30e90SSteven Whitehouse 391dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 392dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 393dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 394dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 395dad30e90SSteven Whitehouse set_buffer_escaped(bh); 396dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 397dad30e90SSteven Whitehouse } 398dad30e90SSteven Whitehouse 3997f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 4007f63257dSBenjamin Marzinski { 4017f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 4027f63257dSBenjamin Marzinski 4037f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 4047f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 4057f63257dSBenjamin Marzinski 4067f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 4077f63257dSBenjamin Marzinski return -1; 4087f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 4097f63257dSBenjamin Marzinski return 1; 4107f63257dSBenjamin Marzinski return 0; 4117f63257dSBenjamin Marzinski } 4127f63257dSBenjamin Marzinski 413dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 414dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 415dad30e90SSteven Whitehouse bool is_databuf) 416b3b94faaSDavid Teigland { 417b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 418b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 419e8c92ed7SSteven Whitehouse struct page *page; 420b3b94faaSDavid Teigland unsigned int num; 421b3b94faaSDavid Teigland unsigned n; 422b3b94faaSDavid Teigland __be64 *ptr; 423b3b94faaSDavid Teigland 424905d2aefSBob Peterson gfs2_log_lock(sdp); 4257f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 426c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 427b3b94faaSDavid Teigland while(total) { 428b3b94faaSDavid Teigland num = total; 429b3b94faaSDavid Teigland if (total > limit) 430b3b94faaSDavid Teigland num = limit; 431905d2aefSBob Peterson gfs2_log_unlock(sdp); 4324a586812SBob Peterson page = gfs2_get_log_desc(sdp, 4334a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 4344a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 435e8c92ed7SSteven Whitehouse ld = page_address(page); 436905d2aefSBob Peterson gfs2_log_lock(sdp); 437e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 438b3b94faaSDavid Teigland 439b3b94faaSDavid Teigland n = 0; 440c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 441b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 442dad30e90SSteven Whitehouse if (is_databuf) { 443dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 444dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 445dad30e90SSteven Whitehouse } 446b3b94faaSDavid Teigland if (++n >= num) 447b3b94faaSDavid Teigland break; 448b3b94faaSDavid Teigland } 449b3b94faaSDavid Teigland 450905d2aefSBob Peterson gfs2_log_unlock(sdp); 451e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 452905d2aefSBob Peterson gfs2_log_lock(sdp); 453b3b94faaSDavid Teigland 454b3b94faaSDavid Teigland n = 0; 455c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 45616615be1SSteven Whitehouse get_bh(bd2->bd_bh); 457905d2aefSBob Peterson gfs2_log_unlock(sdp); 45816615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 459dad30e90SSteven Whitehouse 460dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 461dad30e90SSteven Whitehouse void *kaddr; 462dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 463dad30e90SSteven Whitehouse ptr = page_address(page); 464dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 465dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 466dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 467dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 468dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 469dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 470dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 471dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 472dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 473dad30e90SSteven Whitehouse } else { 474e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 475dad30e90SSteven Whitehouse } 476905d2aefSBob Peterson gfs2_log_lock(sdp); 477b3b94faaSDavid Teigland if (++n >= num) 478b3b94faaSDavid Teigland break; 479b3b94faaSDavid Teigland } 480b3b94faaSDavid Teigland 481905d2aefSBob Peterson BUG_ON(total < num); 482b3b94faaSDavid Teigland total -= num; 483b3b94faaSDavid Teigland } 484905d2aefSBob Peterson gfs2_log_unlock(sdp); 485b3b94faaSDavid Teigland } 486b3b94faaSDavid Teigland 487d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 488dad30e90SSteven Whitehouse { 489dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 490022ef4feSSteven Whitehouse unsigned int nbuf; 491d69a3c65SSteven Whitehouse if (tr == NULL) 492d69a3c65SSteven Whitehouse return; 493022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 494022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 495dad30e90SSteven Whitehouse } 496dad30e90SSteven Whitehouse 49716ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 498b3b94faaSDavid Teigland { 499d69a3c65SSteven Whitehouse struct list_head *head; 500b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 501b3b94faaSDavid Teigland 502d69a3c65SSteven Whitehouse if (tr == NULL) 50316ca9412SBenjamin Marzinski return; 50416ca9412SBenjamin Marzinski 505d69a3c65SSteven Whitehouse head = &tr->tr_buf; 506b3b94faaSDavid Teigland while (!list_empty(head)) { 507c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 508c0752aa7SBob Peterson list_del_init(&bd->bd_list); 50916ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 510b3b94faaSDavid Teigland } 511b3b94faaSDavid Teigland } 512b3b94faaSDavid Teigland 513b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 51455167622SAl Viro struct gfs2_log_header_host *head, int pass) 515b3b94faaSDavid Teigland { 516b3b94faaSDavid Teigland if (pass != 0) 517b3b94faaSDavid Teigland return; 518b3b94faaSDavid Teigland 519a17d758bSBob Peterson jd->jd_found_blocks = 0; 520a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 521b3b94faaSDavid Teigland } 522b3b94faaSDavid Teigland 523b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 524b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 525b3b94faaSDavid Teigland int pass) 526b3b94faaSDavid Teigland { 527feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 528feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 5295c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 530b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 531b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 532cd915493SSteven Whitehouse u64 blkno; 533b3b94faaSDavid Teigland int error = 0; 534b3b94faaSDavid Teigland 535b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 536b3b94faaSDavid Teigland return 0; 537b3b94faaSDavid Teigland 538e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 539b3b94faaSDavid Teigland 540e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 541b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 542b3b94faaSDavid Teigland 543a17d758bSBob Peterson jd->jd_found_blocks++; 544b3b94faaSDavid Teigland 545a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 546b3b94faaSDavid Teigland continue; 547b3b94faaSDavid Teigland 548b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 549b3b94faaSDavid Teigland if (error) 550b3b94faaSDavid Teigland return error; 551b3b94faaSDavid Teigland 552b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 553b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 554b3b94faaSDavid Teigland 555b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 556b3b94faaSDavid Teigland error = -EIO; 557b3b94faaSDavid Teigland else 558b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 559b3b94faaSDavid Teigland 560b3b94faaSDavid Teigland brelse(bh_log); 561b3b94faaSDavid Teigland brelse(bh_ip); 562b3b94faaSDavid Teigland 563b3b94faaSDavid Teigland if (error) 564b3b94faaSDavid Teigland break; 565b3b94faaSDavid Teigland 566a17d758bSBob Peterson jd->jd_replayed_blocks++; 567b3b94faaSDavid Teigland } 568b3b94faaSDavid Teigland 569b3b94faaSDavid Teigland return error; 570b3b94faaSDavid Teigland } 571b3b94faaSDavid Teigland 5727c0ef28aSSteven Whitehouse /** 5737c0ef28aSSteven Whitehouse * gfs2_meta_sync - Sync all buffers associated with a glock 5747c0ef28aSSteven Whitehouse * @gl: The glock 5757c0ef28aSSteven Whitehouse * 5767c0ef28aSSteven Whitehouse */ 5777c0ef28aSSteven Whitehouse 5787c0ef28aSSteven Whitehouse static void gfs2_meta_sync(struct gfs2_glock *gl) 5797c0ef28aSSteven Whitehouse { 5807c0ef28aSSteven Whitehouse struct address_space *mapping = gfs2_glock2aspace(gl); 58115562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 5827c0ef28aSSteven Whitehouse int error; 5837c0ef28aSSteven Whitehouse 58470d4ee94SSteven Whitehouse if (mapping == NULL) 58570d4ee94SSteven Whitehouse mapping = &sdp->sd_aspace; 58670d4ee94SSteven Whitehouse 5877c0ef28aSSteven Whitehouse filemap_fdatawrite(mapping); 5887c0ef28aSSteven Whitehouse error = filemap_fdatawait(mapping); 5897c0ef28aSSteven Whitehouse 5907c0ef28aSSteven Whitehouse if (error) 59115562c43SBob Peterson gfs2_io_error(gl->gl_name.ln_sbd); 5927c0ef28aSSteven Whitehouse } 5937c0ef28aSSteven Whitehouse 594b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 595b3b94faaSDavid Teigland { 596feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 597feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 598b3b94faaSDavid Teigland 599b3b94faaSDavid Teigland if (error) { 6007276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 601b3b94faaSDavid Teigland return; 602b3b94faaSDavid Teigland } 603b3b94faaSDavid Teigland if (pass != 1) 604b3b94faaSDavid Teigland return; 605b3b94faaSDavid Teigland 6067276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 607b3b94faaSDavid Teigland 608b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 609a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 610b3b94faaSDavid Teigland } 611b3b94faaSDavid Teigland 612d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 613b3b94faaSDavid Teigland { 614b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 615b3b94faaSDavid Teigland unsigned int offset; 616b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 61782e86087SSteven Whitehouse struct gfs2_bufdata *bd; 618e8c92ed7SSteven Whitehouse struct page *page; 619dad30e90SSteven Whitehouse unsigned int length; 620b3b94faaSDavid Teigland 6215d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 622b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 623b3b94faaSDavid Teigland return; 624b3b94faaSDavid Teigland 625dad30e90SSteven Whitehouse length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); 626dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 627b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 628b3b94faaSDavid Teigland 629c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 630b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 631b3b94faaSDavid Teigland 632cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 633b3b94faaSDavid Teigland 634e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 635e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 636e8c92ed7SSteven Whitehouse mh = page_address(page); 637e8c92ed7SSteven Whitehouse clear_page(mh); 638b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 639e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 640e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 641b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 642b3b94faaSDavid Teigland } 643b3b94faaSDavid Teigland 644e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 645cd915493SSteven Whitehouse offset += sizeof(u64); 646b3b94faaSDavid Teigland } 647b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 648b3b94faaSDavid Teigland 649e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 650b3b94faaSDavid Teigland } 651b3b94faaSDavid Teigland 65216ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 653f42ab085SSteven Whitehouse { 654f42ab085SSteven Whitehouse struct list_head *head = &sdp->sd_log_le_revoke; 655f42ab085SSteven Whitehouse struct gfs2_bufdata *bd; 656f42ab085SSteven Whitehouse struct gfs2_glock *gl; 657f42ab085SSteven Whitehouse 658f42ab085SSteven Whitehouse while (!list_empty(head)) { 659c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 660c0752aa7SBob Peterson list_del_init(&bd->bd_list); 661f42ab085SSteven Whitehouse gl = bd->bd_gl; 662f42ab085SSteven Whitehouse atomic_dec(&gl->gl_revokes); 663f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 664f42ab085SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd); 665f42ab085SSteven Whitehouse } 666f42ab085SSteven Whitehouse } 667f42ab085SSteven Whitehouse 668b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 66955167622SAl Viro struct gfs2_log_header_host *head, int pass) 670b3b94faaSDavid Teigland { 671b3b94faaSDavid Teigland if (pass != 0) 672b3b94faaSDavid Teigland return; 673b3b94faaSDavid Teigland 674a17d758bSBob Peterson jd->jd_found_revokes = 0; 675a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 676b3b94faaSDavid Teigland } 677b3b94faaSDavid Teigland 678b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 679b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 680b3b94faaSDavid Teigland int pass) 681b3b94faaSDavid Teigland { 682feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 683b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 684b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 685b3b94faaSDavid Teigland struct buffer_head *bh; 686b3b94faaSDavid Teigland unsigned int offset; 687cd915493SSteven Whitehouse u64 blkno; 688b3b94faaSDavid Teigland int first = 1; 689b3b94faaSDavid Teigland int error; 690b3b94faaSDavid Teigland 691b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 692b3b94faaSDavid Teigland return 0; 693b3b94faaSDavid Teigland 694b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 695b3b94faaSDavid Teigland 696e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 697b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 698b3b94faaSDavid Teigland if (error) 699b3b94faaSDavid Teigland return error; 700b3b94faaSDavid Teigland 701b3b94faaSDavid Teigland if (!first) 702b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 703b3b94faaSDavid Teigland 704cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 705b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 706b3b94faaSDavid Teigland 707a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 7083ad62e87SBob Peterson if (error < 0) { 7093ad62e87SBob Peterson brelse(bh); 710b3b94faaSDavid Teigland return error; 7113ad62e87SBob Peterson } 712b3b94faaSDavid Teigland else if (error) 713a17d758bSBob Peterson jd->jd_found_revokes++; 714b3b94faaSDavid Teigland 715b3b94faaSDavid Teigland if (!--revokes) 716b3b94faaSDavid Teigland break; 717cd915493SSteven Whitehouse offset += sizeof(u64); 718b3b94faaSDavid Teigland } 719b3b94faaSDavid Teigland 720b3b94faaSDavid Teigland brelse(bh); 721b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 722b3b94faaSDavid Teigland first = 0; 723b3b94faaSDavid Teigland } 724b3b94faaSDavid Teigland 725b3b94faaSDavid Teigland return 0; 726b3b94faaSDavid Teigland } 727b3b94faaSDavid Teigland 728b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 729b3b94faaSDavid Teigland { 730feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 731b3b94faaSDavid Teigland 732b3b94faaSDavid Teigland if (error) { 733a17d758bSBob Peterson gfs2_revoke_clean(jd); 734b3b94faaSDavid Teigland return; 735b3b94faaSDavid Teigland } 736b3b94faaSDavid Teigland if (pass != 1) 737b3b94faaSDavid Teigland return; 738b3b94faaSDavid Teigland 739b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 740a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 741b3b94faaSDavid Teigland 742a17d758bSBob Peterson gfs2_revoke_clean(jd); 743b3b94faaSDavid Teigland } 744b3b94faaSDavid Teigland 74518ec7d5cSSteven Whitehouse /** 74618ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 74718ec7d5cSSteven Whitehouse * 74818ec7d5cSSteven Whitehouse */ 749d7b616e2SSteven Whitehouse 750d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 751b3b94faaSDavid Teigland { 752022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 753022ef4feSSteven Whitehouse unsigned int nbuf; 754d69a3c65SSteven Whitehouse if (tr == NULL) 755d69a3c65SSteven Whitehouse return; 756022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 757022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 758b3b94faaSDavid Teigland } 759b3b94faaSDavid Teigland 76018ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 76118ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 76218ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 76318ec7d5cSSteven Whitehouse { 764feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 7655c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 76618ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 76718ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 768cd915493SSteven Whitehouse u64 blkno; 769cd915493SSteven Whitehouse u64 esc; 77018ec7d5cSSteven Whitehouse int error = 0; 77118ec7d5cSSteven Whitehouse 77218ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 77318ec7d5cSSteven Whitehouse return 0; 77418ec7d5cSSteven Whitehouse 775e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 776e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 77718ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 77818ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 77918ec7d5cSSteven Whitehouse 780a17d758bSBob Peterson jd->jd_found_blocks++; 78118ec7d5cSSteven Whitehouse 782a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 78318ec7d5cSSteven Whitehouse continue; 78418ec7d5cSSteven Whitehouse 78518ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 78618ec7d5cSSteven Whitehouse if (error) 78718ec7d5cSSteven Whitehouse return error; 78818ec7d5cSSteven Whitehouse 78918ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 79018ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 79118ec7d5cSSteven Whitehouse 79218ec7d5cSSteven Whitehouse /* Unescape */ 79318ec7d5cSSteven Whitehouse if (esc) { 79418ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 79518ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 79618ec7d5cSSteven Whitehouse } 79718ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 79818ec7d5cSSteven Whitehouse 79918ec7d5cSSteven Whitehouse brelse(bh_log); 80018ec7d5cSSteven Whitehouse brelse(bh_ip); 80118ec7d5cSSteven Whitehouse 802a17d758bSBob Peterson jd->jd_replayed_blocks++; 80318ec7d5cSSteven Whitehouse } 80418ec7d5cSSteven Whitehouse 80518ec7d5cSSteven Whitehouse return error; 80618ec7d5cSSteven Whitehouse } 80718ec7d5cSSteven Whitehouse 80818ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 80918ec7d5cSSteven Whitehouse 81018ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 81118ec7d5cSSteven Whitehouse { 812feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 813feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 81418ec7d5cSSteven Whitehouse 81518ec7d5cSSteven Whitehouse if (error) { 8167276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 81718ec7d5cSSteven Whitehouse return; 81818ec7d5cSSteven Whitehouse } 81918ec7d5cSSteven Whitehouse if (pass != 1) 82018ec7d5cSSteven Whitehouse return; 82118ec7d5cSSteven Whitehouse 82218ec7d5cSSteven Whitehouse /* data sync? */ 8237276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 82418ec7d5cSSteven Whitehouse 82518ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 826a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 82718ec7d5cSSteven Whitehouse } 82818ec7d5cSSteven Whitehouse 82916ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 83018ec7d5cSSteven Whitehouse { 831d69a3c65SSteven Whitehouse struct list_head *head; 83218ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 83318ec7d5cSSteven Whitehouse 834d69a3c65SSteven Whitehouse if (tr == NULL) 83516ca9412SBenjamin Marzinski return; 83616ca9412SBenjamin Marzinski 837d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 83818ec7d5cSSteven Whitehouse while (!list_empty(head)) { 839c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 840c0752aa7SBob Peterson list_del_init(&bd->bd_list); 84116ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 84218ec7d5cSSteven Whitehouse } 84318ec7d5cSSteven Whitehouse } 84418ec7d5cSSteven Whitehouse 84518ec7d5cSSteven Whitehouse 846b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 847b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 848b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 849b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 850b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 851b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 852ea67eedbSSteven Whitehouse .lo_name = "buf", 853b3b94faaSDavid Teigland }; 854b3b94faaSDavid Teigland 855b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 856b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 857f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 858b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 859b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 860b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 861ea67eedbSSteven Whitehouse .lo_name = "revoke", 862b3b94faaSDavid Teigland }; 863b3b94faaSDavid Teigland 864b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 865b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 86618ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 86718ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 86818ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 869ea67eedbSSteven Whitehouse .lo_name = "databuf", 870b3b94faaSDavid Teigland }; 871b3b94faaSDavid Teigland 872b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 873b3b94faaSDavid Teigland &gfs2_databuf_lops, 87416615be1SSteven Whitehouse &gfs2_buf_lops, 87516615be1SSteven Whitehouse &gfs2_revoke_lops, 876ea67eedbSSteven Whitehouse NULL, 877b3b94faaSDavid Teigland }; 878b3b94faaSDavid Teigland 879