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; 737c9ca621SBob Peterson struct gfs2_sbd *sdp = gl->gl_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 787c9ca621SBob Peterson if (bi->bi_clone == 0) 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; 867c9ca621SBob Peterson } 877c9ca621SBob Peterson 889b9107a5SSteven Whitehouse /** 899b9107a5SSteven Whitehouse * gfs2_unpin - Unpin a buffer 909b9107a5SSteven Whitehouse * @sdp: the filesystem the buffer belongs to 919b9107a5SSteven Whitehouse * @bh: The buffer to unpin 929b9107a5SSteven Whitehouse * @ai: 9329687a2aSSteven Whitehouse * @flags: The inode dirty flags 949b9107a5SSteven Whitehouse * 959b9107a5SSteven Whitehouse */ 969b9107a5SSteven Whitehouse 979b9107a5SSteven Whitehouse static void gfs2_unpin(struct gfs2_sbd *sdp, struct buffer_head *bh, 9816ca9412SBenjamin Marzinski struct gfs2_trans *tr) 999b9107a5SSteven Whitehouse { 1009b9107a5SSteven Whitehouse struct gfs2_bufdata *bd = bh->b_private; 1019b9107a5SSteven Whitehouse 10229687a2aSSteven Whitehouse BUG_ON(!buffer_uptodate(bh)); 10329687a2aSSteven Whitehouse BUG_ON(!buffer_pinned(bh)); 1049b9107a5SSteven Whitehouse 1059b9107a5SSteven Whitehouse lock_buffer(bh); 1069b9107a5SSteven Whitehouse mark_buffer_dirty(bh); 1079b9107a5SSteven Whitehouse clear_buffer_pinned(bh); 1089b9107a5SSteven Whitehouse 1097c9ca621SBob Peterson if (buffer_is_rgrp(bd)) 1107c9ca621SBob Peterson maybe_release_space(bd); 1117c9ca621SBob Peterson 112d6a079e8SDave Chinner spin_lock(&sdp->sd_ail_lock); 11316ca9412SBenjamin Marzinski if (bd->bd_tr) { 1149b9107a5SSteven Whitehouse list_del(&bd->bd_ail_st_list); 1159b9107a5SSteven Whitehouse brelse(bh); 1169b9107a5SSteven Whitehouse } else { 1179b9107a5SSteven Whitehouse struct gfs2_glock *gl = bd->bd_gl; 1189b9107a5SSteven Whitehouse list_add(&bd->bd_ail_gl_list, &gl->gl_ail_list); 1199b9107a5SSteven Whitehouse atomic_inc(&gl->gl_ail_count); 1209b9107a5SSteven Whitehouse } 12116ca9412SBenjamin Marzinski bd->bd_tr = tr; 12216ca9412SBenjamin Marzinski list_add(&bd->bd_ail_st_list, &tr->tr_ail1_list); 123d6a079e8SDave Chinner spin_unlock(&sdp->sd_ail_lock); 124d6a079e8SDave Chinner 12529687a2aSSteven Whitehouse clear_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags); 12663997775SSteven Whitehouse trace_gfs2_pin(bd, 0); 1279b9107a5SSteven Whitehouse unlock_buffer(bh); 1285e687eacSBenjamin Marzinski atomic_dec(&sdp->sd_log_pinned); 1299b9107a5SSteven Whitehouse } 1309b9107a5SSteven Whitehouse 131e8c92ed7SSteven Whitehouse static void gfs2_log_incr_head(struct gfs2_sbd *sdp) 13216615be1SSteven Whitehouse { 133e8c92ed7SSteven Whitehouse BUG_ON((sdp->sd_log_flush_head == sdp->sd_log_tail) && 134e8c92ed7SSteven Whitehouse (sdp->sd_log_flush_head != sdp->sd_log_head)); 135e8c92ed7SSteven Whitehouse 136e8c92ed7SSteven Whitehouse if (++sdp->sd_log_flush_head == sdp->sd_jdesc->jd_blocks) { 137e8c92ed7SSteven Whitehouse sdp->sd_log_flush_head = 0; 138e8c92ed7SSteven Whitehouse sdp->sd_log_flush_wrapped = 1; 139e8c92ed7SSteven Whitehouse } 14016615be1SSteven Whitehouse } 14116615be1SSteven Whitehouse 142e8c92ed7SSteven Whitehouse static 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 148e8c92ed7SSteven Whitehouse list_for_each_entry(je, &sdp->sd_jdesc->extent_list, extent_list) { 149e8c92ed7SSteven 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 * 165e8c92ed7SSteven Whitehouse * This finds the relavent buffers and unlocks then 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, 172e8c92ed7SSteven Whitehouse int 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) 184e8c92ed7SSteven Whitehouse set_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 204e8c92ed7SSteven Whitehouse static void gfs2_end_log_write(struct bio *bio, int error) 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 211e8c92ed7SSteven Whitehouse if (error) { 212e8c92ed7SSteven Whitehouse sdp->sd_log_error = error; 213e8c92ed7SSteven Whitehouse fs_err(sdp, "Error %d writing to log\n", error); 214e8c92ed7SSteven Whitehouse } 215e8c92ed7SSteven Whitehouse 216e97e548bSSteven Whitehouse bio_for_each_segment_all(bvec, bio, i) { 217e8c92ed7SSteven Whitehouse page = bvec->bv_page; 218e8c92ed7SSteven Whitehouse if (page_has_buffers(page)) 219e8c92ed7SSteven Whitehouse gfs2_end_log_write_bh(sdp, bvec, error); 220e8c92ed7SSteven Whitehouse else 221e8c92ed7SSteven Whitehouse mempool_free(page, gfs2_page_pool); 222e8c92ed7SSteven Whitehouse } 223e8c92ed7SSteven Whitehouse 224e8c92ed7SSteven Whitehouse bio_put(bio); 22547ac5537SSteven Whitehouse if (atomic_dec_and_test(&sdp->sd_log_in_flight)) 22647ac5537SSteven Whitehouse wake_up(&sdp->sd_log_flush_wait); 22747ac5537SSteven Whitehouse } 22847ac5537SSteven Whitehouse 22947ac5537SSteven Whitehouse /** 230e8c92ed7SSteven Whitehouse * gfs2_log_flush_bio - Submit any pending log bio 231e8c92ed7SSteven Whitehouse * @sdp: The superblock 232e8c92ed7SSteven Whitehouse * @rw: The rw flags 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 238e8c92ed7SSteven Whitehouse void gfs2_log_flush_bio(struct gfs2_sbd *sdp, int rw) 239e8c92ed7SSteven Whitehouse { 240e8c92ed7SSteven Whitehouse if (sdp->sd_log_bio) { 241e8c92ed7SSteven Whitehouse atomic_inc(&sdp->sd_log_in_flight); 242e8c92ed7SSteven Whitehouse submit_bio(rw, sdp->sd_log_bio); 243e8c92ed7SSteven Whitehouse sdp->sd_log_bio = NULL; 244e8c92ed7SSteven Whitehouse } 245e8c92ed7SSteven Whitehouse } 246e8c92ed7SSteven Whitehouse 247e8c92ed7SSteven Whitehouse /** 248e8c92ed7SSteven Whitehouse * gfs2_log_alloc_bio - Allocate a new bio for log writing 249e8c92ed7SSteven Whitehouse * @sdp: The superblock 250e8c92ed7SSteven Whitehouse * @blkno: The next device block number we want to write to 251e8c92ed7SSteven Whitehouse * 252e8c92ed7SSteven Whitehouse * This should never be called when there is a cached bio in the 253e8c92ed7SSteven Whitehouse * super block. When it returns, there will be a cached bio in the 254e8c92ed7SSteven Whitehouse * super block which will have as many bio_vecs as the device is 255e8c92ed7SSteven Whitehouse * happy to handle. 256e8c92ed7SSteven Whitehouse * 257e8c92ed7SSteven Whitehouse * Returns: Newly allocated bio 258e8c92ed7SSteven Whitehouse */ 259e8c92ed7SSteven Whitehouse 260e8c92ed7SSteven Whitehouse static struct bio *gfs2_log_alloc_bio(struct gfs2_sbd *sdp, u64 blkno) 261e8c92ed7SSteven Whitehouse { 262e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 263e8c92ed7SSteven Whitehouse unsigned nrvecs = bio_get_nr_vecs(sb->s_bdev); 264e8c92ed7SSteven Whitehouse struct bio *bio; 265e8c92ed7SSteven Whitehouse 266e8c92ed7SSteven Whitehouse BUG_ON(sdp->sd_log_bio); 267e8c92ed7SSteven Whitehouse 268e8c92ed7SSteven Whitehouse while (1) { 269e8c92ed7SSteven Whitehouse bio = bio_alloc(GFP_NOIO, nrvecs); 270e8c92ed7SSteven Whitehouse if (likely(bio)) 271e8c92ed7SSteven Whitehouse break; 272e8c92ed7SSteven Whitehouse nrvecs = max(nrvecs/2, 1U); 273e8c92ed7SSteven Whitehouse } 274e8c92ed7SSteven Whitehouse 275e8c92ed7SSteven Whitehouse bio->bi_sector = blkno * (sb->s_blocksize >> 9); 276e8c92ed7SSteven Whitehouse bio->bi_bdev = sb->s_bdev; 277e8c92ed7SSteven Whitehouse bio->bi_end_io = gfs2_end_log_write; 278e8c92ed7SSteven Whitehouse bio->bi_private = sdp; 279e8c92ed7SSteven Whitehouse 280e8c92ed7SSteven Whitehouse sdp->sd_log_bio = bio; 281e8c92ed7SSteven Whitehouse 282e8c92ed7SSteven Whitehouse return bio; 283e8c92ed7SSteven Whitehouse } 284e8c92ed7SSteven Whitehouse 285e8c92ed7SSteven Whitehouse /** 286e8c92ed7SSteven Whitehouse * gfs2_log_get_bio - Get cached log bio, or allocate a new one 287e8c92ed7SSteven Whitehouse * @sdp: The superblock 288e8c92ed7SSteven Whitehouse * @blkno: The device block number we want to write to 289e8c92ed7SSteven Whitehouse * 290e8c92ed7SSteven Whitehouse * If there is a cached bio, then if the next block number is sequential 291e8c92ed7SSteven Whitehouse * with the previous one, return it, otherwise flush the bio to the 292e8c92ed7SSteven Whitehouse * device. If there is not a cached bio, or we just flushed it, then 293e8c92ed7SSteven Whitehouse * allocate a new one. 294e8c92ed7SSteven Whitehouse * 295e8c92ed7SSteven Whitehouse * Returns: The bio to use for log writes 296e8c92ed7SSteven Whitehouse */ 297e8c92ed7SSteven Whitehouse 298e8c92ed7SSteven Whitehouse static struct bio *gfs2_log_get_bio(struct gfs2_sbd *sdp, u64 blkno) 299e8c92ed7SSteven Whitehouse { 300e8c92ed7SSteven Whitehouse struct bio *bio = sdp->sd_log_bio; 301e8c92ed7SSteven Whitehouse u64 nblk; 302e8c92ed7SSteven Whitehouse 303e8c92ed7SSteven Whitehouse if (bio) { 304f73a1c7dSKent Overstreet nblk = bio_end_sector(bio); 305e8c92ed7SSteven Whitehouse nblk >>= sdp->sd_fsb2bb_shift; 306e8c92ed7SSteven Whitehouse if (blkno == nblk) 307e8c92ed7SSteven Whitehouse return bio; 308e8c92ed7SSteven Whitehouse gfs2_log_flush_bio(sdp, WRITE); 309e8c92ed7SSteven Whitehouse } 310e8c92ed7SSteven Whitehouse 311e8c92ed7SSteven Whitehouse return gfs2_log_alloc_bio(sdp, blkno); 312e8c92ed7SSteven Whitehouse } 313e8c92ed7SSteven Whitehouse 314e8c92ed7SSteven Whitehouse 315e8c92ed7SSteven Whitehouse /** 316e8c92ed7SSteven Whitehouse * gfs2_log_write - write to log 31747ac5537SSteven Whitehouse * @sdp: the filesystem 318e8c92ed7SSteven Whitehouse * @page: the page to write 319e8c92ed7SSteven Whitehouse * @size: the size of the data to write 320e8c92ed7SSteven Whitehouse * @offset: the offset within the page 32147ac5537SSteven Whitehouse * 322e8c92ed7SSteven Whitehouse * Try and add the page segment to the current bio. If that fails, 323e8c92ed7SSteven Whitehouse * submit the current bio to the device and create a new one, and 324e8c92ed7SSteven Whitehouse * then add the page segment to that. 32547ac5537SSteven Whitehouse */ 32647ac5537SSteven Whitehouse 327e8c92ed7SSteven Whitehouse static void gfs2_log_write(struct gfs2_sbd *sdp, struct page *page, 328e8c92ed7SSteven Whitehouse unsigned size, unsigned offset) 32947ac5537SSteven Whitehouse { 330e8c92ed7SSteven Whitehouse u64 blkno = gfs2_log_bmap(sdp); 331e8c92ed7SSteven Whitehouse struct bio *bio; 332e8c92ed7SSteven Whitehouse int ret; 33347ac5537SSteven Whitehouse 334e8c92ed7SSteven Whitehouse bio = gfs2_log_get_bio(sdp, blkno); 335e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 336e8c92ed7SSteven Whitehouse if (ret == 0) { 337e8c92ed7SSteven Whitehouse gfs2_log_flush_bio(sdp, WRITE); 338e8c92ed7SSteven Whitehouse bio = gfs2_log_alloc_bio(sdp, blkno); 339e8c92ed7SSteven Whitehouse ret = bio_add_page(bio, page, size, offset); 340e8c92ed7SSteven Whitehouse WARN_ON(ret == 0); 341e8c92ed7SSteven Whitehouse } 34247ac5537SSteven Whitehouse } 34316615be1SSteven Whitehouse 344e8c92ed7SSteven Whitehouse /** 345e8c92ed7SSteven Whitehouse * gfs2_log_write_bh - write a buffer's content to the log 346e8c92ed7SSteven Whitehouse * @sdp: The super block 347e8c92ed7SSteven Whitehouse * @bh: The buffer pointing to the in-place location 348e8c92ed7SSteven Whitehouse * 349e8c92ed7SSteven Whitehouse * This writes the content of the buffer to the next available location 350e8c92ed7SSteven Whitehouse * in the log. The buffer will be unlocked once the i/o to the log has 351e8c92ed7SSteven Whitehouse * completed. 352e8c92ed7SSteven Whitehouse */ 353e8c92ed7SSteven Whitehouse 354e8c92ed7SSteven Whitehouse static void gfs2_log_write_bh(struct gfs2_sbd *sdp, struct buffer_head *bh) 35516615be1SSteven Whitehouse { 356e8c92ed7SSteven Whitehouse gfs2_log_write(sdp, bh->b_page, bh->b_size, bh_offset(bh)); 357e8c92ed7SSteven Whitehouse } 358e8c92ed7SSteven Whitehouse 359e8c92ed7SSteven Whitehouse /** 360e8c92ed7SSteven Whitehouse * gfs2_log_write_page - write one block stored in a page, into the log 361e8c92ed7SSteven Whitehouse * @sdp: The superblock 362e8c92ed7SSteven Whitehouse * @page: The struct page 363e8c92ed7SSteven Whitehouse * 364e8c92ed7SSteven Whitehouse * This writes the first block-sized part of the page into the log. Note 365e8c92ed7SSteven Whitehouse * that the page must have been allocated from the gfs2_page_pool mempool 366e8c92ed7SSteven Whitehouse * and that after this has been called, ownership has been transferred and 367e8c92ed7SSteven Whitehouse * the page may be freed at any time. 368e8c92ed7SSteven Whitehouse */ 369e8c92ed7SSteven Whitehouse 370e8c92ed7SSteven Whitehouse void gfs2_log_write_page(struct gfs2_sbd *sdp, struct page *page) 371e8c92ed7SSteven Whitehouse { 372e8c92ed7SSteven Whitehouse struct super_block *sb = sdp->sd_vfs; 373e8c92ed7SSteven Whitehouse gfs2_log_write(sdp, page, sb->s_blocksize, 0); 374e8c92ed7SSteven Whitehouse } 375e8c92ed7SSteven Whitehouse 376dad30e90SSteven Whitehouse static struct page *gfs2_get_log_desc(struct gfs2_sbd *sdp, u32 ld_type, 377dad30e90SSteven Whitehouse u32 ld_length, u32 ld_data1) 378e8c92ed7SSteven Whitehouse { 379144a4c2fSSteven Whitehouse struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 380e8c92ed7SSteven Whitehouse struct gfs2_log_descriptor *ld = page_address(page); 381e8c92ed7SSteven Whitehouse clear_page(ld); 38216615be1SSteven Whitehouse ld->ld_header.mh_magic = cpu_to_be32(GFS2_MAGIC); 38316615be1SSteven Whitehouse ld->ld_header.mh_type = cpu_to_be32(GFS2_METATYPE_LD); 38416615be1SSteven Whitehouse ld->ld_header.mh_format = cpu_to_be32(GFS2_FORMAT_LD); 38516615be1SSteven Whitehouse ld->ld_type = cpu_to_be32(ld_type); 386dad30e90SSteven Whitehouse ld->ld_length = cpu_to_be32(ld_length); 387dad30e90SSteven Whitehouse ld->ld_data1 = cpu_to_be32(ld_data1); 38816615be1SSteven Whitehouse ld->ld_data2 = 0; 389e8c92ed7SSteven Whitehouse return page; 39016615be1SSteven Whitehouse } 39116615be1SSteven Whitehouse 392dad30e90SSteven Whitehouse static void gfs2_check_magic(struct buffer_head *bh) 393dad30e90SSteven Whitehouse { 394dad30e90SSteven Whitehouse void *kaddr; 395dad30e90SSteven Whitehouse __be32 *ptr; 396dad30e90SSteven Whitehouse 397dad30e90SSteven Whitehouse clear_buffer_escaped(bh); 398dad30e90SSteven Whitehouse kaddr = kmap_atomic(bh->b_page); 399dad30e90SSteven Whitehouse ptr = kaddr + bh_offset(bh); 400dad30e90SSteven Whitehouse if (*ptr == cpu_to_be32(GFS2_MAGIC)) 401dad30e90SSteven Whitehouse set_buffer_escaped(bh); 402dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 403dad30e90SSteven Whitehouse } 404dad30e90SSteven Whitehouse 4057f63257dSBenjamin Marzinski static int blocknr_cmp(void *priv, struct list_head *a, struct list_head *b) 4067f63257dSBenjamin Marzinski { 4077f63257dSBenjamin Marzinski struct gfs2_bufdata *bda, *bdb; 4087f63257dSBenjamin Marzinski 4097f63257dSBenjamin Marzinski bda = list_entry(a, struct gfs2_bufdata, bd_list); 4107f63257dSBenjamin Marzinski bdb = list_entry(b, struct gfs2_bufdata, bd_list); 4117f63257dSBenjamin Marzinski 4127f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr < bdb->bd_bh->b_blocknr) 4137f63257dSBenjamin Marzinski return -1; 4147f63257dSBenjamin Marzinski if (bda->bd_bh->b_blocknr > bdb->bd_bh->b_blocknr) 4157f63257dSBenjamin Marzinski return 1; 4167f63257dSBenjamin Marzinski return 0; 4177f63257dSBenjamin Marzinski } 4187f63257dSBenjamin Marzinski 419dad30e90SSteven Whitehouse static void gfs2_before_commit(struct gfs2_sbd *sdp, unsigned int limit, 420dad30e90SSteven Whitehouse unsigned int total, struct list_head *blist, 421dad30e90SSteven Whitehouse bool is_databuf) 422b3b94faaSDavid Teigland { 423b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld; 424b3b94faaSDavid Teigland struct gfs2_bufdata *bd1 = NULL, *bd2; 425e8c92ed7SSteven Whitehouse struct page *page; 426b3b94faaSDavid Teigland unsigned int num; 427b3b94faaSDavid Teigland unsigned n; 428b3b94faaSDavid Teigland __be64 *ptr; 429b3b94faaSDavid Teigland 430905d2aefSBob Peterson gfs2_log_lock(sdp); 4317f63257dSBenjamin Marzinski list_sort(NULL, blist, blocknr_cmp); 432c0752aa7SBob Peterson bd1 = bd2 = list_prepare_entry(bd1, blist, bd_list); 433b3b94faaSDavid Teigland while(total) { 434b3b94faaSDavid Teigland num = total; 435b3b94faaSDavid Teigland if (total > limit) 436b3b94faaSDavid Teigland num = limit; 437905d2aefSBob Peterson gfs2_log_unlock(sdp); 4384a586812SBob Peterson page = gfs2_get_log_desc(sdp, 4394a586812SBob Peterson is_databuf ? GFS2_LOG_DESC_JDATA : 4404a586812SBob Peterson GFS2_LOG_DESC_METADATA, num + 1, num); 441e8c92ed7SSteven Whitehouse ld = page_address(page); 442905d2aefSBob Peterson gfs2_log_lock(sdp); 443e8c92ed7SSteven Whitehouse ptr = (__be64 *)(ld + 1); 444b3b94faaSDavid Teigland 445b3b94faaSDavid Teigland n = 0; 446c0752aa7SBob Peterson list_for_each_entry_continue(bd1, blist, bd_list) { 447b3b94faaSDavid Teigland *ptr++ = cpu_to_be64(bd1->bd_bh->b_blocknr); 448dad30e90SSteven Whitehouse if (is_databuf) { 449dad30e90SSteven Whitehouse gfs2_check_magic(bd1->bd_bh); 450dad30e90SSteven Whitehouse *ptr++ = cpu_to_be64(buffer_escaped(bd1->bd_bh) ? 1 : 0); 451dad30e90SSteven Whitehouse } 452b3b94faaSDavid Teigland if (++n >= num) 453b3b94faaSDavid Teigland break; 454b3b94faaSDavid Teigland } 455b3b94faaSDavid Teigland 456905d2aefSBob Peterson gfs2_log_unlock(sdp); 457e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 458905d2aefSBob Peterson gfs2_log_lock(sdp); 459b3b94faaSDavid Teigland 460b3b94faaSDavid Teigland n = 0; 461c0752aa7SBob Peterson list_for_each_entry_continue(bd2, blist, bd_list) { 46216615be1SSteven Whitehouse get_bh(bd2->bd_bh); 463905d2aefSBob Peterson gfs2_log_unlock(sdp); 46416615be1SSteven Whitehouse lock_buffer(bd2->bd_bh); 465dad30e90SSteven Whitehouse 466dad30e90SSteven Whitehouse if (buffer_escaped(bd2->bd_bh)) { 467dad30e90SSteven Whitehouse void *kaddr; 468dad30e90SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 469dad30e90SSteven Whitehouse ptr = page_address(page); 470dad30e90SSteven Whitehouse kaddr = kmap_atomic(bd2->bd_bh->b_page); 471dad30e90SSteven Whitehouse memcpy(ptr, kaddr + bh_offset(bd2->bd_bh), 472dad30e90SSteven Whitehouse bd2->bd_bh->b_size); 473dad30e90SSteven Whitehouse kunmap_atomic(kaddr); 474dad30e90SSteven Whitehouse *(__be32 *)ptr = 0; 475dad30e90SSteven Whitehouse clear_buffer_escaped(bd2->bd_bh); 476dad30e90SSteven Whitehouse unlock_buffer(bd2->bd_bh); 477dad30e90SSteven Whitehouse brelse(bd2->bd_bh); 478dad30e90SSteven Whitehouse gfs2_log_write_page(sdp, page); 479dad30e90SSteven Whitehouse } else { 480e8c92ed7SSteven Whitehouse gfs2_log_write_bh(sdp, bd2->bd_bh); 481dad30e90SSteven Whitehouse } 482905d2aefSBob Peterson gfs2_log_lock(sdp); 483b3b94faaSDavid Teigland if (++n >= num) 484b3b94faaSDavid Teigland break; 485b3b94faaSDavid Teigland } 486b3b94faaSDavid Teigland 487905d2aefSBob Peterson BUG_ON(total < num); 488b3b94faaSDavid Teigland total -= num; 489b3b94faaSDavid Teigland } 490905d2aefSBob Peterson gfs2_log_unlock(sdp); 491b3b94faaSDavid Teigland } 492b3b94faaSDavid Teigland 493dad30e90SSteven Whitehouse static void buf_lo_before_commit(struct gfs2_sbd *sdp) 494dad30e90SSteven Whitehouse { 495dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp); /* 503 for 4k blocks */ 496dad30e90SSteven Whitehouse 497dad30e90SSteven Whitehouse gfs2_before_commit(sdp, limit, sdp->sd_log_num_buf, 498dad30e90SSteven Whitehouse &sdp->sd_log_le_buf, 0); 499dad30e90SSteven Whitehouse } 500dad30e90SSteven Whitehouse 50116ca9412SBenjamin Marzinski static void buf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 502b3b94faaSDavid Teigland { 503b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_buf; 504b3b94faaSDavid Teigland struct gfs2_bufdata *bd; 505b3b94faaSDavid Teigland 50616ca9412SBenjamin Marzinski if (tr == NULL) { 50716ca9412SBenjamin Marzinski gfs2_assert(sdp, list_empty(head)); 50816ca9412SBenjamin Marzinski return; 50916ca9412SBenjamin Marzinski } 51016ca9412SBenjamin Marzinski 511b3b94faaSDavid Teigland while (!list_empty(head)) { 512c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 513c0752aa7SBob Peterson list_del_init(&bd->bd_list); 514b3b94faaSDavid Teigland sdp->sd_log_num_buf--; 515b3b94faaSDavid Teigland 51616ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 517b3b94faaSDavid Teigland } 518b3b94faaSDavid Teigland gfs2_assert_warn(sdp, !sdp->sd_log_num_buf); 519b3b94faaSDavid Teigland } 520b3b94faaSDavid Teigland 521b3b94faaSDavid Teigland static void buf_lo_before_scan(struct gfs2_jdesc *jd, 52255167622SAl Viro struct gfs2_log_header_host *head, int pass) 523b3b94faaSDavid Teigland { 524feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 525b3b94faaSDavid Teigland 526b3b94faaSDavid Teigland if (pass != 0) 527b3b94faaSDavid Teigland return; 528b3b94faaSDavid Teigland 529b3b94faaSDavid Teigland sdp->sd_found_blocks = 0; 530b3b94faaSDavid Teigland sdp->sd_replayed_blocks = 0; 531b3b94faaSDavid Teigland } 532b3b94faaSDavid Teigland 533b3b94faaSDavid Teigland static int buf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 534b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 535b3b94faaSDavid Teigland int pass) 536b3b94faaSDavid Teigland { 537feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 538feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 5395c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 540b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_data1); 541b3b94faaSDavid Teigland struct buffer_head *bh_log, *bh_ip; 542cd915493SSteven Whitehouse u64 blkno; 543b3b94faaSDavid Teigland int error = 0; 544b3b94faaSDavid Teigland 545b3b94faaSDavid Teigland if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_METADATA) 546b3b94faaSDavid Teigland return 0; 547b3b94faaSDavid Teigland 548b3b94faaSDavid Teigland gfs2_replay_incr_blk(sdp, &start); 549b3b94faaSDavid Teigland 550b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 551b3b94faaSDavid Teigland blkno = be64_to_cpu(*ptr++); 552b3b94faaSDavid Teigland 553b3b94faaSDavid Teigland sdp->sd_found_blocks++; 554b3b94faaSDavid Teigland 555b3b94faaSDavid Teigland if (gfs2_revoke_check(sdp, blkno, start)) 556b3b94faaSDavid Teigland continue; 557b3b94faaSDavid Teigland 558b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh_log); 559b3b94faaSDavid Teigland if (error) 560b3b94faaSDavid Teigland return error; 561b3b94faaSDavid Teigland 562b3b94faaSDavid Teigland bh_ip = gfs2_meta_new(gl, blkno); 563b3b94faaSDavid Teigland memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 564b3b94faaSDavid Teigland 565b3b94faaSDavid Teigland if (gfs2_meta_check(sdp, bh_ip)) 566b3b94faaSDavid Teigland error = -EIO; 567b3b94faaSDavid Teigland else 568b3b94faaSDavid Teigland mark_buffer_dirty(bh_ip); 569b3b94faaSDavid Teigland 570b3b94faaSDavid Teigland brelse(bh_log); 571b3b94faaSDavid Teigland brelse(bh_ip); 572b3b94faaSDavid Teigland 573b3b94faaSDavid Teigland if (error) 574b3b94faaSDavid Teigland break; 575b3b94faaSDavid Teigland 576b3b94faaSDavid Teigland sdp->sd_replayed_blocks++; 577b3b94faaSDavid Teigland } 578b3b94faaSDavid Teigland 579b3b94faaSDavid Teigland return error; 580b3b94faaSDavid Teigland } 581b3b94faaSDavid Teigland 5827c0ef28aSSteven Whitehouse /** 5837c0ef28aSSteven Whitehouse * gfs2_meta_sync - Sync all buffers associated with a glock 5847c0ef28aSSteven Whitehouse * @gl: The glock 5857c0ef28aSSteven Whitehouse * 5867c0ef28aSSteven Whitehouse */ 5877c0ef28aSSteven Whitehouse 5887c0ef28aSSteven Whitehouse static void gfs2_meta_sync(struct gfs2_glock *gl) 5897c0ef28aSSteven Whitehouse { 5907c0ef28aSSteven Whitehouse struct address_space *mapping = gfs2_glock2aspace(gl); 5917c0ef28aSSteven Whitehouse int error; 5927c0ef28aSSteven Whitehouse 5937c0ef28aSSteven Whitehouse filemap_fdatawrite(mapping); 5947c0ef28aSSteven Whitehouse error = filemap_fdatawait(mapping); 5957c0ef28aSSteven Whitehouse 5967c0ef28aSSteven Whitehouse if (error) 5977c0ef28aSSteven Whitehouse gfs2_io_error(gl->gl_sbd); 5987c0ef28aSSteven Whitehouse } 5997c0ef28aSSteven Whitehouse 600b3b94faaSDavid Teigland static void buf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 601b3b94faaSDavid Teigland { 602feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 603feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 604b3b94faaSDavid Teigland 605b3b94faaSDavid Teigland if (error) { 6067276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 607b3b94faaSDavid Teigland return; 608b3b94faaSDavid Teigland } 609b3b94faaSDavid Teigland if (pass != 1) 610b3b94faaSDavid Teigland return; 611b3b94faaSDavid Teigland 6127276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 613b3b94faaSDavid Teigland 614b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Replayed %u of %u blocks\n", 615b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 616b3b94faaSDavid Teigland } 617b3b94faaSDavid Teigland 618b3b94faaSDavid Teigland static void revoke_lo_before_commit(struct gfs2_sbd *sdp) 619b3b94faaSDavid Teigland { 620b3b94faaSDavid Teigland struct gfs2_meta_header *mh; 621b3b94faaSDavid Teigland unsigned int offset; 622b3b94faaSDavid Teigland struct list_head *head = &sdp->sd_log_le_revoke; 62382e86087SSteven Whitehouse struct gfs2_bufdata *bd; 624e8c92ed7SSteven Whitehouse struct page *page; 625dad30e90SSteven Whitehouse unsigned int length; 626b3b94faaSDavid Teigland 6275d054964SBenjamin Marzinski gfs2_write_revokes(sdp); 628b3b94faaSDavid Teigland if (!sdp->sd_log_num_revoke) 629b3b94faaSDavid Teigland return; 630b3b94faaSDavid Teigland 631dad30e90SSteven Whitehouse length = gfs2_struct2blk(sdp, sdp->sd_log_num_revoke, sizeof(u64)); 632dad30e90SSteven Whitehouse page = gfs2_get_log_desc(sdp, GFS2_LOG_DESC_REVOKE, length, sdp->sd_log_num_revoke); 633b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 634b3b94faaSDavid Teigland 635c0752aa7SBob Peterson list_for_each_entry(bd, head, bd_list) { 636b3b94faaSDavid Teigland sdp->sd_log_num_revoke--; 637b3b94faaSDavid Teigland 638cd915493SSteven Whitehouse if (offset + sizeof(u64) > sdp->sd_sb.sb_bsize) { 639b3b94faaSDavid Teigland 640e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 641e8c92ed7SSteven Whitehouse page = mempool_alloc(gfs2_page_pool, GFP_NOIO); 642e8c92ed7SSteven Whitehouse mh = page_address(page); 643e8c92ed7SSteven Whitehouse clear_page(mh); 644b3b94faaSDavid Teigland mh->mh_magic = cpu_to_be32(GFS2_MAGIC); 645e3167dedSSteven Whitehouse mh->mh_type = cpu_to_be32(GFS2_METATYPE_LB); 646e3167dedSSteven Whitehouse mh->mh_format = cpu_to_be32(GFS2_FORMAT_LB); 647b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 648b3b94faaSDavid Teigland } 649b3b94faaSDavid Teigland 650e8c92ed7SSteven Whitehouse *(__be64 *)(page_address(page) + offset) = cpu_to_be64(bd->bd_blkno); 651cd915493SSteven Whitehouse offset += sizeof(u64); 652b3b94faaSDavid Teigland } 653b3b94faaSDavid Teigland gfs2_assert_withdraw(sdp, !sdp->sd_log_num_revoke); 654b3b94faaSDavid Teigland 655e8c92ed7SSteven Whitehouse gfs2_log_write_page(sdp, page); 656b3b94faaSDavid Teigland } 657b3b94faaSDavid Teigland 65816ca9412SBenjamin Marzinski static void revoke_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 659f42ab085SSteven Whitehouse { 660f42ab085SSteven Whitehouse struct list_head *head = &sdp->sd_log_le_revoke; 661f42ab085SSteven Whitehouse struct gfs2_bufdata *bd; 662f42ab085SSteven Whitehouse struct gfs2_glock *gl; 663f42ab085SSteven Whitehouse 664f42ab085SSteven Whitehouse while (!list_empty(head)) { 665c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 666c0752aa7SBob Peterson list_del_init(&bd->bd_list); 667f42ab085SSteven Whitehouse gl = bd->bd_gl; 668f42ab085SSteven Whitehouse atomic_dec(&gl->gl_revokes); 669f42ab085SSteven Whitehouse clear_bit(GLF_LFLUSH, &gl->gl_flags); 670f42ab085SSteven Whitehouse kmem_cache_free(gfs2_bufdata_cachep, bd); 671f42ab085SSteven Whitehouse } 672f42ab085SSteven Whitehouse } 673f42ab085SSteven Whitehouse 674b3b94faaSDavid Teigland static void revoke_lo_before_scan(struct gfs2_jdesc *jd, 67555167622SAl Viro struct gfs2_log_header_host *head, int pass) 676b3b94faaSDavid Teigland { 677feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 678b3b94faaSDavid Teigland 679b3b94faaSDavid Teigland if (pass != 0) 680b3b94faaSDavid Teigland return; 681b3b94faaSDavid Teigland 682b3b94faaSDavid Teigland sdp->sd_found_revokes = 0; 683b3b94faaSDavid Teigland sdp->sd_replay_tail = head->lh_tail; 684b3b94faaSDavid Teigland } 685b3b94faaSDavid Teigland 686b3b94faaSDavid Teigland static int revoke_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 687b3b94faaSDavid Teigland struct gfs2_log_descriptor *ld, __be64 *ptr, 688b3b94faaSDavid Teigland int pass) 689b3b94faaSDavid Teigland { 690feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 691b3b94faaSDavid Teigland unsigned int blks = be32_to_cpu(ld->ld_length); 692b3b94faaSDavid Teigland unsigned int revokes = be32_to_cpu(ld->ld_data1); 693b3b94faaSDavid Teigland struct buffer_head *bh; 694b3b94faaSDavid Teigland unsigned int offset; 695cd915493SSteven Whitehouse u64 blkno; 696b3b94faaSDavid Teigland int first = 1; 697b3b94faaSDavid Teigland int error; 698b3b94faaSDavid Teigland 699b3b94faaSDavid Teigland if (pass != 0 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_REVOKE) 700b3b94faaSDavid Teigland return 0; 701b3b94faaSDavid Teigland 702b3b94faaSDavid Teigland offset = sizeof(struct gfs2_log_descriptor); 703b3b94faaSDavid Teigland 704b3b94faaSDavid Teigland for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 705b3b94faaSDavid Teigland error = gfs2_replay_read_block(jd, start, &bh); 706b3b94faaSDavid Teigland if (error) 707b3b94faaSDavid Teigland return error; 708b3b94faaSDavid Teigland 709b3b94faaSDavid Teigland if (!first) 710b3b94faaSDavid Teigland gfs2_metatype_check(sdp, bh, GFS2_METATYPE_LB); 711b3b94faaSDavid Teigland 712cd915493SSteven Whitehouse while (offset + sizeof(u64) <= sdp->sd_sb.sb_bsize) { 713b3b94faaSDavid Teigland blkno = be64_to_cpu(*(__be64 *)(bh->b_data + offset)); 714b3b94faaSDavid Teigland 715b3b94faaSDavid Teigland error = gfs2_revoke_add(sdp, blkno, start); 7163ad62e87SBob Peterson if (error < 0) { 7173ad62e87SBob Peterson brelse(bh); 718b3b94faaSDavid Teigland return error; 7193ad62e87SBob Peterson } 720b3b94faaSDavid Teigland else if (error) 721b3b94faaSDavid Teigland sdp->sd_found_revokes++; 722b3b94faaSDavid Teigland 723b3b94faaSDavid Teigland if (!--revokes) 724b3b94faaSDavid Teigland break; 725cd915493SSteven Whitehouse offset += sizeof(u64); 726b3b94faaSDavid Teigland } 727b3b94faaSDavid Teigland 728b3b94faaSDavid Teigland brelse(bh); 729b3b94faaSDavid Teigland offset = sizeof(struct gfs2_meta_header); 730b3b94faaSDavid Teigland first = 0; 731b3b94faaSDavid Teigland } 732b3b94faaSDavid Teigland 733b3b94faaSDavid Teigland return 0; 734b3b94faaSDavid Teigland } 735b3b94faaSDavid Teigland 736b3b94faaSDavid Teigland static void revoke_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 737b3b94faaSDavid Teigland { 738feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 739b3b94faaSDavid Teigland 740b3b94faaSDavid Teigland if (error) { 741b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 742b3b94faaSDavid Teigland return; 743b3b94faaSDavid Teigland } 744b3b94faaSDavid Teigland if (pass != 1) 745b3b94faaSDavid Teigland return; 746b3b94faaSDavid Teigland 747b3b94faaSDavid Teigland fs_info(sdp, "jid=%u: Found %u revoke tags\n", 748b3b94faaSDavid Teigland jd->jd_jid, sdp->sd_found_revokes); 749b3b94faaSDavid Teigland 750b3b94faaSDavid Teigland gfs2_revoke_clean(sdp); 751b3b94faaSDavid Teigland } 752b3b94faaSDavid Teigland 75318ec7d5cSSteven Whitehouse /** 75418ec7d5cSSteven Whitehouse * databuf_lo_before_commit - Scan the data buffers, writing as we go 75518ec7d5cSSteven Whitehouse * 75618ec7d5cSSteven Whitehouse */ 757d7b616e2SSteven Whitehouse 758b3b94faaSDavid Teigland static void databuf_lo_before_commit(struct gfs2_sbd *sdp) 759b3b94faaSDavid Teigland { 760dad30e90SSteven Whitehouse unsigned int limit = buf_limit(sdp) / 2; 761b3b94faaSDavid Teigland 762dad30e90SSteven Whitehouse gfs2_before_commit(sdp, limit, sdp->sd_log_num_databuf, 763dad30e90SSteven Whitehouse &sdp->sd_log_le_databuf, 1); 764b3b94faaSDavid Teigland } 765b3b94faaSDavid Teigland 76618ec7d5cSSteven Whitehouse static int databuf_lo_scan_elements(struct gfs2_jdesc *jd, unsigned int start, 76718ec7d5cSSteven Whitehouse struct gfs2_log_descriptor *ld, 76818ec7d5cSSteven Whitehouse __be64 *ptr, int pass) 76918ec7d5cSSteven Whitehouse { 770feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 771feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 7725c676f6dSSteven Whitehouse struct gfs2_glock *gl = ip->i_gl; 77318ec7d5cSSteven Whitehouse unsigned int blks = be32_to_cpu(ld->ld_data1); 77418ec7d5cSSteven Whitehouse struct buffer_head *bh_log, *bh_ip; 775cd915493SSteven Whitehouse u64 blkno; 776cd915493SSteven Whitehouse u64 esc; 77718ec7d5cSSteven Whitehouse int error = 0; 77818ec7d5cSSteven Whitehouse 77918ec7d5cSSteven Whitehouse if (pass != 1 || be32_to_cpu(ld->ld_type) != GFS2_LOG_DESC_JDATA) 78018ec7d5cSSteven Whitehouse return 0; 78118ec7d5cSSteven Whitehouse 78218ec7d5cSSteven Whitehouse gfs2_replay_incr_blk(sdp, &start); 78318ec7d5cSSteven Whitehouse for (; blks; gfs2_replay_incr_blk(sdp, &start), blks--) { 78418ec7d5cSSteven Whitehouse blkno = be64_to_cpu(*ptr++); 78518ec7d5cSSteven Whitehouse esc = be64_to_cpu(*ptr++); 78618ec7d5cSSteven Whitehouse 78718ec7d5cSSteven Whitehouse sdp->sd_found_blocks++; 78818ec7d5cSSteven Whitehouse 78918ec7d5cSSteven Whitehouse if (gfs2_revoke_check(sdp, blkno, start)) 79018ec7d5cSSteven Whitehouse continue; 79118ec7d5cSSteven Whitehouse 79218ec7d5cSSteven Whitehouse error = gfs2_replay_read_block(jd, start, &bh_log); 79318ec7d5cSSteven Whitehouse if (error) 79418ec7d5cSSteven Whitehouse return error; 79518ec7d5cSSteven Whitehouse 79618ec7d5cSSteven Whitehouse bh_ip = gfs2_meta_new(gl, blkno); 79718ec7d5cSSteven Whitehouse memcpy(bh_ip->b_data, bh_log->b_data, bh_log->b_size); 79818ec7d5cSSteven Whitehouse 79918ec7d5cSSteven Whitehouse /* Unescape */ 80018ec7d5cSSteven Whitehouse if (esc) { 80118ec7d5cSSteven Whitehouse __be32 *eptr = (__be32 *)bh_ip->b_data; 80218ec7d5cSSteven Whitehouse *eptr = cpu_to_be32(GFS2_MAGIC); 80318ec7d5cSSteven Whitehouse } 80418ec7d5cSSteven Whitehouse mark_buffer_dirty(bh_ip); 80518ec7d5cSSteven Whitehouse 80618ec7d5cSSteven Whitehouse brelse(bh_log); 80718ec7d5cSSteven Whitehouse brelse(bh_ip); 80818ec7d5cSSteven Whitehouse 80918ec7d5cSSteven Whitehouse sdp->sd_replayed_blocks++; 81018ec7d5cSSteven Whitehouse } 81118ec7d5cSSteven Whitehouse 81218ec7d5cSSteven Whitehouse return error; 81318ec7d5cSSteven Whitehouse } 81418ec7d5cSSteven Whitehouse 81518ec7d5cSSteven Whitehouse /* FIXME: sort out accounting for log blocks etc. */ 81618ec7d5cSSteven Whitehouse 81718ec7d5cSSteven Whitehouse static void databuf_lo_after_scan(struct gfs2_jdesc *jd, int error, int pass) 81818ec7d5cSSteven Whitehouse { 819feaa7bbaSSteven Whitehouse struct gfs2_inode *ip = GFS2_I(jd->jd_inode); 820feaa7bbaSSteven Whitehouse struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode); 82118ec7d5cSSteven Whitehouse 82218ec7d5cSSteven Whitehouse if (error) { 8237276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 82418ec7d5cSSteven Whitehouse return; 82518ec7d5cSSteven Whitehouse } 82618ec7d5cSSteven Whitehouse if (pass != 1) 82718ec7d5cSSteven Whitehouse return; 82818ec7d5cSSteven Whitehouse 82918ec7d5cSSteven Whitehouse /* data sync? */ 8307276b3b0SSteven Whitehouse gfs2_meta_sync(ip->i_gl); 83118ec7d5cSSteven Whitehouse 83218ec7d5cSSteven Whitehouse fs_info(sdp, "jid=%u: Replayed %u of %u data blocks\n", 83318ec7d5cSSteven Whitehouse jd->jd_jid, sdp->sd_replayed_blocks, sdp->sd_found_blocks); 83418ec7d5cSSteven Whitehouse } 83518ec7d5cSSteven Whitehouse 83616ca9412SBenjamin Marzinski static void databuf_lo_after_commit(struct gfs2_sbd *sdp, struct gfs2_trans *tr) 83718ec7d5cSSteven Whitehouse { 83818ec7d5cSSteven Whitehouse struct list_head *head = &sdp->sd_log_le_databuf; 83918ec7d5cSSteven Whitehouse struct gfs2_bufdata *bd; 84018ec7d5cSSteven Whitehouse 84116ca9412SBenjamin Marzinski if (tr == NULL) { 84216ca9412SBenjamin Marzinski gfs2_assert(sdp, list_empty(head)); 84316ca9412SBenjamin Marzinski return; 84416ca9412SBenjamin Marzinski } 84516ca9412SBenjamin Marzinski 84618ec7d5cSSteven Whitehouse while (!list_empty(head)) { 847c0752aa7SBob Peterson bd = list_entry(head->next, struct gfs2_bufdata, bd_list); 848c0752aa7SBob Peterson list_del_init(&bd->bd_list); 84918ec7d5cSSteven Whitehouse sdp->sd_log_num_databuf--; 85016ca9412SBenjamin Marzinski gfs2_unpin(sdp, bd->bd_bh, tr); 85118ec7d5cSSteven Whitehouse } 85218ec7d5cSSteven Whitehouse gfs2_assert_warn(sdp, !sdp->sd_log_num_databuf); 85318ec7d5cSSteven Whitehouse } 85418ec7d5cSSteven Whitehouse 85518ec7d5cSSteven Whitehouse 856b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_buf_lops = { 857b3b94faaSDavid Teigland .lo_before_commit = buf_lo_before_commit, 858b3b94faaSDavid Teigland .lo_after_commit = buf_lo_after_commit, 859b3b94faaSDavid Teigland .lo_before_scan = buf_lo_before_scan, 860b3b94faaSDavid Teigland .lo_scan_elements = buf_lo_scan_elements, 861b3b94faaSDavid Teigland .lo_after_scan = buf_lo_after_scan, 862ea67eedbSSteven Whitehouse .lo_name = "buf", 863b3b94faaSDavid Teigland }; 864b3b94faaSDavid Teigland 865b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_revoke_lops = { 866b3b94faaSDavid Teigland .lo_before_commit = revoke_lo_before_commit, 867f42ab085SSteven Whitehouse .lo_after_commit = revoke_lo_after_commit, 868b3b94faaSDavid Teigland .lo_before_scan = revoke_lo_before_scan, 869b3b94faaSDavid Teigland .lo_scan_elements = revoke_lo_scan_elements, 870b3b94faaSDavid Teigland .lo_after_scan = revoke_lo_after_scan, 871ea67eedbSSteven Whitehouse .lo_name = "revoke", 872b3b94faaSDavid Teigland }; 873b3b94faaSDavid Teigland 874b09e593dSSteven Whitehouse const struct gfs2_log_operations gfs2_databuf_lops = { 875b3b94faaSDavid Teigland .lo_before_commit = databuf_lo_before_commit, 87618ec7d5cSSteven Whitehouse .lo_after_commit = databuf_lo_after_commit, 87718ec7d5cSSteven Whitehouse .lo_scan_elements = databuf_lo_scan_elements, 87818ec7d5cSSteven Whitehouse .lo_after_scan = databuf_lo_after_scan, 879ea67eedbSSteven Whitehouse .lo_name = "databuf", 880b3b94faaSDavid Teigland }; 881b3b94faaSDavid Teigland 882b09e593dSSteven Whitehouse const struct gfs2_log_operations *gfs2_log_ops[] = { 883b3b94faaSDavid Teigland &gfs2_databuf_lops, 88416615be1SSteven Whitehouse &gfs2_buf_lops, 88516615be1SSteven Whitehouse &gfs2_revoke_lops, 886ea67eedbSSteven Whitehouse NULL, 887b3b94faaSDavid Teigland }; 888b3b94faaSDavid Teigland 889