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)) 529b9107a5SSteven Whitehouse gfs2_io_error_bh(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, 847c9ca621SBob Peterson bd->bd_bh->b_data + bi->bi_offset, bi->bi_len); 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 171e8c92ed7SSteven Whitehouse static void gfs2_end_log_write_bh(struct gfs2_sbd *sdp, struct bio_vec *bvec, 1724e4cbee9SChristoph Hellwig blk_status_t error) 173e8c92ed7SSteven Whitehouse { 174e8c92ed7SSteven Whitehouse struct buffer_head *bh, *next; 175e8c92ed7SSteven Whitehouse struct page *page = bvec->bv_page; 176e8c92ed7SSteven Whitehouse unsigned size; 177e8c92ed7SSteven Whitehouse 178e8c92ed7SSteven Whitehouse bh = page_buffers(page); 179e8c92ed7SSteven Whitehouse size = bvec->bv_len; 180e8c92ed7SSteven Whitehouse while (bh_offset(bh) < bvec->bv_offset) 181e8c92ed7SSteven Whitehouse bh = bh->b_this_page; 182e8c92ed7SSteven Whitehouse do { 183e8c92ed7SSteven Whitehouse if (error) 18487354e5dSJeff Layton mark_buffer_write_io_error(bh); 185e8c92ed7SSteven Whitehouse unlock_buffer(bh); 186e8c92ed7SSteven Whitehouse next = bh->b_this_page; 187e8c92ed7SSteven Whitehouse size -= bh->b_size; 188e8c92ed7SSteven Whitehouse brelse(bh); 189e8c92ed7SSteven Whitehouse bh = next; 190e8c92ed7SSteven Whitehouse } while(bh && size); 191e8c92ed7SSteven Whitehouse } 192e8c92ed7SSteven Whitehouse 193e8c92ed7SSteven Whitehouse /** 194e8c92ed7SSteven Whitehouse * gfs2_end_log_write - end of i/o to the log 195e8c92ed7SSteven Whitehouse * @bio: The bio 196e8c92ed7SSteven Whitehouse * @error: Status of i/o request 197e8c92ed7SSteven Whitehouse * 198e8c92ed7SSteven Whitehouse * Each bio_vec contains either data from the pagecache or data 199e8c92ed7SSteven Whitehouse * relating to the log itself. Here we iterate over the bio_vec 200e8c92ed7SSteven Whitehouse * array, processing both kinds of data. 20147ac5537SSteven Whitehouse * 20247ac5537SSteven Whitehouse */ 20347ac5537SSteven Whitehouse 2044246a0b6SChristoph Hellwig static void gfs2_end_log_write(struct bio *bio) 20547ac5537SSteven Whitehouse { 206e8c92ed7SSteven Whitehouse struct gfs2_sbd *sdp = bio->bi_private; 207e8c92ed7SSteven Whitehouse struct bio_vec *bvec; 208e8c92ed7SSteven Whitehouse struct page *page; 209e8c92ed7SSteven Whitehouse int i; 21047ac5537SSteven Whitehouse 211942b0cddSBob Peterson if (bio->bi_status) { 212942b0cddSBob Peterson fs_err(sdp, "Error %d writing to journal, jid=%u\n", 213942b0cddSBob Peterson bio->bi_status, sdp->sd_jdesc->jd_jid); 214942b0cddSBob Peterson wake_up(&sdp->sd_logd_waitq); 215942b0cddSBob Peterson } 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)) 2204e4cbee9SChristoph Hellwig gfs2_end_log_write_bh(sdp, bvec, bio->bi_status); 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); 27274d46992SChristoph Hellwig bio_set_dev(bio, 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 * gfs2_log_write - write to log 31247ac5537SSteven Whitehouse * @sdp: the filesystem 313e8c92ed7SSteven Whitehouse * @page: the page to write 314e8c92ed7SSteven Whitehouse * @size: the size of the data to write 315e8c92ed7SSteven Whitehouse * @offset: the offset within the page 316c1696fb8SBob Peterson * @blkno: block number of the log entry 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 323c1696fb8SBob Peterson void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 324c1696fb8SBob Peterson unsigned size, unsigned offset, u64 blkno) 32547ac5537SSteven Whitehouse { 326e8c92ed7SSteven Whitehouse struct bio *bio; 327e8c92ed7SSteven Whitehouse int ret; 32847ac5537SSteven Whitehouse 329e8c92ed7SSteven Whitehouse bio = gfs2_log_get_bio(sdp, blkno); 330e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 331e8c92ed7SSteven Whitehouse if (ret == 0) { 332e1b1afa6SMike Christie gfs2_log_flush_bio(sdp, REQ_OP_WRITE, 0); 333e8c92ed7SSteven Whitehouse bio = gfs2_log_alloc_bio(sdp, blkno); 334e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 335e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 336e8c92ed7SSteven Whitehouse } 33747ac5537SSteven Whitehouse } 33816615be1SSteven Whitehouse 339e8c92ed7SSteven Whitehouse /** 340e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 341e8c92ed7SSteven Whitehouse * @sdp: The super block 342e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 343e8c92ed7SSteven Whitehouse * 344e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 345e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 346e8c92ed7SSteven Whitehouse * completed. 347e8c92ed7SSteven Whitehouse */ 348e8c92ed7SSteven Whitehouse 349e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 35016615be1SSteven Whitehouse { 351c1696fb8SBob Peterson gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh), 352c1696fb8SBob Peterson gfs2_log_bmap(sdp)); 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; 369c1696fb8SBob Peterson gfs2_log_write(sdp, page, sb->s_blocksize, 0, 370c1696fb8SBob Peterson gfs2_log_bmap(sdp)); 371e8c92ed7SSteven Whitehouse } 372e8c92ed7SSteven Whitehouse 373dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 374dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 375e8c92ed7SSteven Whitehouse { 376144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 377e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 378e8c92ed7SSteven Whitehouse clear_page(ld); 37916615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 38016615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 38116615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 38216615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 383dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 384dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 38516615be1SSteven Whitehouse ld->ld_data2 = 0; 386e8c92ed7SSteven Whitehouse return page; 38716615be1SSteven Whitehouse } 38816615be1SSteven Whitehouse 389dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 390dad30e90SSteven Whitehouse { 391dad30e90SSteven Whitehouse void *kaddr; 392dad30e90SSteven Whitehouse __be32 *ptr; 393dad30e90SSteven Whitehouse 394dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 395dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 396dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 397dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 398dad30e90SSteven Whitehouse set_buffer_escaped(bh); 399dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 400dad30e90SSteven Whitehouse } 401dad30e90SSteven Whitehouse 4027f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 4037f63257dSBenjamin Marzinski { 4047f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 4057f63257dSBenjamin Marzinski 4067f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 4077f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 4087f63257dSBenjamin Marzinski 4097f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 4107f63257dSBenjamin Marzinski return -1; 4117f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 4127f63257dSBenjamin Marzinski return 1; 4137f63257dSBenjamin Marzinski return 0; 4147f63257dSBenjamin Marzinski } 4157f63257dSBenjamin Marzinski 416dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 417dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 418dad30e90SSteven Whitehouse bool is_databuf) 419b3b94faaSDavid Teigland { 420b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 421b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 422e8c92ed7SSteven Whitehouse struct page *page; 423b3b94faaSDavid Teigland unsigned int num; 424b3b94faaSDavid Teigland unsigned n; 425b3b94faaSDavid Teigland __be64 *ptr; 426b3b94faaSDavid Teigland 427905d2aefSBob Peterson gfs2_log_lock(sdp); 4287f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 429c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 430b3b94faaSDavid Teigland while(total) { 431b3b94faaSDavid Teigland num = total; 432b3b94faaSDavid Teigland if (total > limit) 433b3b94faaSDavid Teigland num = limit; 434905d2aefSBob Peterson gfs2_log_unlock(sdp); 4354a586812SBob Peterson page = gfs2_get_log_desc(sdp, 4364a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 4374a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 438e8c92ed7SSteven Whitehouse ld = page_address(page); 439905d2aefSBob Peterson gfs2_log_lock(sdp); 440e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 441b3b94faaSDavid Teigland 442b3b94faaSDavid Teigland n = 0; 443c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 444b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 445dad30e90SSteven Whitehouse if (is_databuf) { 446dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 447dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 448dad30e90SSteven Whitehouse } 449b3b94faaSDavid Teigland if (++n >= num) 450b3b94faaSDavid Teigland break; 451b3b94faaSDavid Teigland } 452b3b94faaSDavid Teigland 453905d2aefSBob Peterson gfs2_log_unlock(sdp); 454e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 455905d2aefSBob Peterson gfs2_log_lock(sdp); 456b3b94faaSDavid Teigland 457b3b94faaSDavid Teigland n = 0; 458c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 45916615be1SSteven Whitehouse get_bh(bd2->bd_bh); 460905d2aefSBob Peterson gfs2_log_unlock(sdp); 46116615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 462dad30e90SSteven Whitehouse 463dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 464dad30e90SSteven Whitehouse void *kaddr; 465dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 466dad30e90SSteven Whitehouse ptr = page_address(page); 467dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 468dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 469dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 470dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 471dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 472dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 473dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 474dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 475dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 476dad30e90SSteven Whitehouse } else { 477e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 478dad30e90SSteven Whitehouse } 479905d2aefSBob Peterson gfs2_log_lock(sdp); 480b3b94faaSDavid Teigland if (++n >= num) 481b3b94faaSDavid Teigland break; 482b3b94faaSDavid Teigland } 483b3b94faaSDavid Teigland 484905d2aefSBob Peterson BUG_ON(total < num); 485b3b94faaSDavid Teigland total -= num; 486b3b94faaSDavid Teigland } 487905d2aefSBob Peterson gfs2_log_unlock(sdp); 488b3b94faaSDavid Teigland } 489b3b94faaSDavid Teigland 490d69a3c65SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 491dad30e90SSteven Whitehouse { 492dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 493022ef4feSSteven Whitehouse unsigned int nbuf; 494d69a3c65SSteven Whitehouse if (tr == NULL) 495d69a3c65SSteven Whitehouse return; 496022ef4feSSteven Whitehouse nbuf = tr->tr_num_buf_new - tr->tr_num_buf_rm; 497022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_buf, 0); 498dad30e90SSteven Whitehouse } 499dad30e90SSteven Whitehouse 50016ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 501b3b94faaSDavid Teigland { 502d69a3c65SSteven Whitehouse struct list_head *head; 503b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 504b3b94faaSDavid Teigland 505d69a3c65SSteven Whitehouse if (tr == NULL) 50616ca9412SBenjamin Marzinski return; 50716ca9412SBenjamin Marzinski 508d69a3c65SSteven Whitehouse head = &tr->tr_buf; 509b3b94faaSDavid Teigland while (!list_empty(head)) { 510c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 511c0752aa7SBob Peterson list_del_init(&bd->bd_list); 51216ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 513b3b94faaSDavid Teigland } 514b3b94faaSDavid Teigland } 515b3b94faaSDavid Teigland 516b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 51755167622SAl Viro struct gfs2_log_header_host *head, int pass) 518b3b94faaSDavid Teigland { 519b3b94faaSDavid Teigland if (pass != 0) 520b3b94faaSDavid Teigland return; 521b3b94faaSDavid Teigland 522a17d758bSBob Peterson jd->jd_found_blocks = 0; 523a17d758bSBob Peterson jd->jd_replayed_blocks = 0; 524b3b94faaSDavid Teigland } 525b3b94faaSDavid Teigland 526b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 527b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 528b3b94faaSDavid Teigland int pass) 529b3b94faaSDavid Teigland { 530feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 531feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 5325c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 533b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 534b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 535cd915493SSteven Whitehouse u64 blkno; 536b3b94faaSDavid Teigland int error = 0; 537b3b94faaSDavid Teigland 538b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 539b3b94faaSDavid Teigland return 0; 540b3b94faaSDavid Teigland 541e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 542b3b94faaSDavid Teigland 543e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 544b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 545b3b94faaSDavid Teigland 546a17d758bSBob Peterson jd->jd_found_blocks++; 547b3b94faaSDavid Teigland 548a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 549b3b94faaSDavid Teigland continue; 550b3b94faaSDavid Teigland 551b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 552b3b94faaSDavid Teigland if (error) 553b3b94faaSDavid Teigland return error; 554b3b94faaSDavid Teigland 555b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 556b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 557b3b94faaSDavid Teigland 558b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 559b3b94faaSDavid Teigland error = -EIO; 560b3b94faaSDavid Teigland else 561b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 562b3b94faaSDavid Teigland 563b3b94faaSDavid Teigland brelse(bh_log); 564b3b94faaSDavid Teigland brelse(bh_ip); 565b3b94faaSDavid Teigland 566b3b94faaSDavid Teigland if (error) 567b3b94faaSDavid Teigland break; 568b3b94faaSDavid Teigland 569a17d758bSBob Peterson jd->jd_replayed_blocks++; 570b3b94faaSDavid Teigland } 571b3b94faaSDavid Teigland 572b3b94faaSDavid Teigland return error; 573b3b94faaSDavid Teigland } 574b3b94faaSDavid Teigland 5757c0ef28aSSteven Whitehouse /** 5767c0ef28aSSteven Whitehouse * gfs2_meta_sync - Sync all buffers associated with a glock 5777c0ef28aSSteven Whitehouse * @gl: The glock 5787c0ef28aSSteven Whitehouse * 5797c0ef28aSSteven Whitehouse */ 5807c0ef28aSSteven Whitehouse 5817c0ef28aSSteven Whitehouse static void gfs2_meta_sync(struct gfs2_glock *gl) 5827c0ef28aSSteven Whitehouse { 5837c0ef28aSSteven Whitehouse struct address_space *mapping = gfs2_glock2aspace(gl); 58415562c43SBob Peterson struct gfs2_sbd *sdp = gl->gl_name.ln_sbd; 5857c0ef28aSSteven Whitehouse int error; 5867c0ef28aSSteven Whitehouse 58770d4ee94SSteven Whitehouse if (mapping == NULL) 58870d4ee94SSteven Whitehouse mapping = &sdp->sd_aspace; 58970d4ee94SSteven Whitehouse 5907c0ef28aSSteven Whitehouse filemap_fdatawrite(mapping); 5917c0ef28aSSteven Whitehouse error = filemap_fdatawait(mapping); 5927c0ef28aSSteven Whitehouse 5937c0ef28aSSteven Whitehouse if (error) 59415562c43SBob Peterson gfs2_io_error(gl->gl_name.ln_sbd); 5957c0ef28aSSteven Whitehouse } 5967c0ef28aSSteven Whitehouse 597b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 598b3b94faaSDavid Teigland { 599feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 600feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 601b3b94faaSDavid Teigland 602b3b94faaSDavid Teigland if (error) { 6037276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 604b3b94faaSDavid Teigland return; 605b3b94faaSDavid Teigland } 606b3b94faaSDavid Teigland if (pass != 1) 607b3b94faaSDavid Teigland return; 608b3b94faaSDavid Teigland 6097276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 610b3b94faaSDavid Teigland 611b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 612a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 613b3b94faaSDavid Teigland } 614b3b94faaSDavid Teigland 615d69a3c65SSteven Whitehouse static void revoke_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 616b3b94faaSDavid Teigland { 617b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 618b3b94faaSDavid Teigland unsigned int offset; 619b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 62082e86087SSteven Whitehouse struct gfs2_bufdata *bd; 621e8c92ed7SSteven Whitehouse struct page *page; 622dad30e90SSteven Whitehouse unsigned int length; 623b3b94faaSDavid Teigland 6245d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 625b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 626b3b94faaSDavid Teigland return; 627b3b94faaSDavid Teigland 628dad30e90SSteven Whitehouse length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); 629dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 630b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 631b3b94faaSDavid Teigland 632c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 633b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 634b3b94faaSDavid Teigland 635cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 636b3b94faaSDavid Teigland 637e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 638e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 639e8c92ed7SSteven Whitehouse mh = page_address(page); 640e8c92ed7SSteven Whitehouse clear_page(mh); 641b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 642e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 643e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 644b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 645b3b94faaSDavid Teigland } 646b3b94faaSDavid Teigland 647e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 648cd915493SSteven Whitehouse offset += sizeof(u64); 649b3b94faaSDavid Teigland } 650b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 651b3b94faaSDavid Teigland 652e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 653b3b94faaSDavid Teigland } 654b3b94faaSDavid Teigland 65516ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 656f42ab085SSteven Whitehouse { 657f42ab085SSteven Whitehouse struct list_head *head = &sdp->sd_log_le_revoke; 658f42ab085SSteven Whitehouse struct gfs2_bufdata *bd; 659f42ab085SSteven Whitehouse struct gfs2_glock *gl; 660f42ab085SSteven Whitehouse 661f42ab085SSteven Whitehouse while (!list_empty(head)) { 662c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 663c0752aa7SBob Peterson list_del_init(&bd->bd_list); 664f42ab085SSteven Whitehouse gl = bd->bd_gl; 665f42ab085SSteven Whitehouse atomic_dec(&gl->gl_revokes); 666f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 667f42ab085SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd); 668f42ab085SSteven Whitehouse } 669f42ab085SSteven Whitehouse } 670f42ab085SSteven Whitehouse 671b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 67255167622SAl Viro struct gfs2_log_header_host *head, int pass) 673b3b94faaSDavid Teigland { 674b3b94faaSDavid Teigland if (pass != 0) 675b3b94faaSDavid Teigland return; 676b3b94faaSDavid Teigland 677a17d758bSBob Peterson jd->jd_found_revokes = 0; 678a17d758bSBob Peterson jd->jd_replay_tail = head->lh_tail; 679b3b94faaSDavid Teigland } 680b3b94faaSDavid Teigland 681b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 682b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 683b3b94faaSDavid Teigland int pass) 684b3b94faaSDavid Teigland { 685feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 686b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 687b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 688b3b94faaSDavid Teigland struct buffer_head *bh; 689b3b94faaSDavid Teigland unsigned int offset; 690cd915493SSteven Whitehouse u64 blkno; 691b3b94faaSDavid Teigland int first = 1; 692b3b94faaSDavid Teigland int error; 693b3b94faaSDavid Teigland 694b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 695b3b94faaSDavid Teigland return 0; 696b3b94faaSDavid Teigland 697b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 698b3b94faaSDavid Teigland 699e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 700b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 701b3b94faaSDavid Teigland if (error) 702b3b94faaSDavid Teigland return error; 703b3b94faaSDavid Teigland 704b3b94faaSDavid Teigland if (!first) 705b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 706b3b94faaSDavid Teigland 707cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 708b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 709b3b94faaSDavid Teigland 710a17d758bSBob Peterson error = gfs2_revoke_add(jd, blkno, start); 7113ad62e87SBob Peterson if (error < 0) { 7123ad62e87SBob Peterson brelse(bh); 713b3b94faaSDavid Teigland return error; 7143ad62e87SBob Peterson } 715b3b94faaSDavid Teigland else if (error) 716a17d758bSBob Peterson jd->jd_found_revokes++; 717b3b94faaSDavid Teigland 718b3b94faaSDavid Teigland if (!--revokes) 719b3b94faaSDavid Teigland break; 720cd915493SSteven Whitehouse offset += sizeof(u64); 721b3b94faaSDavid Teigland } 722b3b94faaSDavid Teigland 723b3b94faaSDavid Teigland brelse(bh); 724b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 725b3b94faaSDavid Teigland first = 0; 726b3b94faaSDavid Teigland } 727b3b94faaSDavid Teigland 728b3b94faaSDavid Teigland return 0; 729b3b94faaSDavid Teigland } 730b3b94faaSDavid Teigland 731b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 732b3b94faaSDavid Teigland { 733feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 734b3b94faaSDavid Teigland 735b3b94faaSDavid Teigland if (error) { 736a17d758bSBob Peterson gfs2_revoke_clean(jd); 737b3b94faaSDavid Teigland return; 738b3b94faaSDavid Teigland } 739b3b94faaSDavid Teigland if (pass != 1) 740b3b94faaSDavid Teigland return; 741b3b94faaSDavid Teigland 742b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 743a17d758bSBob Peterson jd->jd_jid, jd->jd_found_revokes); 744b3b94faaSDavid Teigland 745a17d758bSBob Peterson gfs2_revoke_clean(jd); 746b3b94faaSDavid Teigland } 747b3b94faaSDavid Teigland 74818ec7d5cSSteven Whitehouse /** 74918ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 75018ec7d5cSSteven Whitehouse * 75118ec7d5cSSteven Whitehouse */ 752d7b616e2SSteven Whitehouse 753d69a3c65SSteven Whitehouse static void databuf_lo_before_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 754b3b94faaSDavid Teigland { 755022ef4feSSteven Whitehouse unsigned int limit = databuf_limit(sdp); 756022ef4feSSteven Whitehouse unsigned int nbuf; 757d69a3c65SSteven Whitehouse if (tr == NULL) 758d69a3c65SSteven Whitehouse return; 759022ef4feSSteven Whitehouse nbuf = tr->tr_num_databuf_new - tr->tr_num_databuf_rm; 760022ef4feSSteven Whitehouse gfs2_before_commit(sdp, limit, nbuf, &tr->tr_databuf, 1); 761b3b94faaSDavid Teigland } 762b3b94faaSDavid Teigland 76318ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 76418ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 76518ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 76618ec7d5cSSteven Whitehouse { 767feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 7685c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 76918ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 77018ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 771cd915493SSteven Whitehouse u64 blkno; 772cd915493SSteven Whitehouse u64 esc; 77318ec7d5cSSteven Whitehouse int error = 0; 77418ec7d5cSSteven Whitehouse 77518ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 77618ec7d5cSSteven Whitehouse return 0; 77718ec7d5cSSteven Whitehouse 778e1cb6be9SBob Peterson gfs2_replay_incr_blk(jd, &start); 779e1cb6be9SBob Peterson for (; blks; gfs2_replay_incr_blk(jd, &start), blks--) { 78018ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 78118ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 78218ec7d5cSSteven Whitehouse 783a17d758bSBob Peterson jd->jd_found_blocks++; 78418ec7d5cSSteven Whitehouse 785a17d758bSBob Peterson if (gfs2_revoke_check(jd, blkno, start)) 78618ec7d5cSSteven Whitehouse continue; 78718ec7d5cSSteven Whitehouse 78818ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 78918ec7d5cSSteven Whitehouse if (error) 79018ec7d5cSSteven Whitehouse return error; 79118ec7d5cSSteven Whitehouse 79218ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 79318ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 79418ec7d5cSSteven Whitehouse 79518ec7d5cSSteven Whitehouse /* Unescape */ 79618ec7d5cSSteven Whitehouse if (esc) { 79718ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 79818ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 79918ec7d5cSSteven Whitehouse } 80018ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 80118ec7d5cSSteven Whitehouse 80218ec7d5cSSteven Whitehouse brelse(bh_log); 80318ec7d5cSSteven Whitehouse brelse(bh_ip); 80418ec7d5cSSteven Whitehouse 805a17d758bSBob Peterson jd->jd_replayed_blocks++; 80618ec7d5cSSteven Whitehouse } 80718ec7d5cSSteven Whitehouse 80818ec7d5cSSteven Whitehouse return error; 80918ec7d5cSSteven Whitehouse } 81018ec7d5cSSteven Whitehouse 81118ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 81218ec7d5cSSteven Whitehouse 81318ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 81418ec7d5cSSteven Whitehouse { 815feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 816feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 81718ec7d5cSSteven Whitehouse 81818ec7d5cSSteven Whitehouse if (error) { 8197276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 82018ec7d5cSSteven Whitehouse return; 82118ec7d5cSSteven Whitehouse } 82218ec7d5cSSteven Whitehouse if (pass != 1) 82318ec7d5cSSteven Whitehouse return; 82418ec7d5cSSteven Whitehouse 82518ec7d5cSSteven Whitehouse /* data sync? */ 8267276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 82718ec7d5cSSteven Whitehouse 82818ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 829a17d758bSBob Peterson jd->jd_jid, jd->jd_replayed_blocks, jd->jd_found_blocks); 83018ec7d5cSSteven Whitehouse } 83118ec7d5cSSteven Whitehouse 83216ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 83318ec7d5cSSteven Whitehouse { 834d69a3c65SSteven Whitehouse struct list_head *head; 83518ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 83618ec7d5cSSteven Whitehouse 837d69a3c65SSteven Whitehouse if (tr == NULL) 83816ca9412SBenjamin Marzinski return; 83916ca9412SBenjamin Marzinski 840d69a3c65SSteven Whitehouse head = &tr->tr_databuf; 84118ec7d5cSSteven Whitehouse while (!list_empty(head)) { 842c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 843c0752aa7SBob Peterson list_del_init(&bd->bd_list); 84416ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 84518ec7d5cSSteven Whitehouse } 84618ec7d5cSSteven Whitehouse } 84718ec7d5cSSteven Whitehouse 84818ec7d5cSSteven Whitehouse 849b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 850b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 851b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 852b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 853b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 854b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 855ea67eedbSSteven Whitehouse .lo_name = "buf", 856b3b94faaSDavid Teigland }; 857b3b94faaSDavid Teigland 858b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 859b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 860f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 861b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 862b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 863b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 864ea67eedbSSteven Whitehouse .lo_name = "revoke", 865b3b94faaSDavid Teigland }; 866b3b94faaSDavid Teigland 867b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 868b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 86918ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 87018ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 87118ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 872ea67eedbSSteven Whitehouse .lo_name = "databuf", 873b3b94faaSDavid Teigland }; 874b3b94faaSDavid Teigland 875b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 876b3b94faaSDavid Teigland &gfs2_databuf_lops, 87716615be1SSteven Whitehouse &gfs2_buf_lops, 87816615be1SSteven Whitehouse &gfs2_revoke_lops, 879ea67eedbSSteven Whitehouse NULL, 880b3b94faaSDavid Teigland }; 881b3b94faaSDavid Teigland 882