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-rw-r--r--fs/ocfs2/alloc.c685
-rw-r--r--fs/ocfs2/alloc.h8
-rw-r--r--fs/ocfs2/dir.c4
-rw-r--r--fs/ocfs2/file.c11
-rw-r--r--fs/ocfs2/inode.c9
-rw-r--r--fs/ocfs2/refcounttree.c29
-rw-r--r--fs/ocfs2/refcounttree.h4
7 files changed, 178 insertions, 572 deletions
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index 0cb2945eb817..0cb4248e03cd 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -5587,19 +5587,97 @@ out:
5587 return ret; 5587 return ret;
5588} 5588}
5589 5589
5590/*
5591 * ocfs2_reserve_blocks_for_rec_trunc() would look basically the
5592 * same as ocfs2_lock_alloctors(), except for it accepts a blocks
5593 * number to reserve some extra blocks, and it only handles meta
5594 * data allocations.
5595 *
5596 * Currently, only ocfs2_remove_btree_range() uses it for truncating
5597 * and punching holes.
5598 */
5599static int ocfs2_reserve_blocks_for_rec_trunc(struct inode *inode,
5600 struct ocfs2_extent_tree *et,
5601 u32 extents_to_split,
5602 struct ocfs2_alloc_context **ac,
5603 int extra_blocks)
5604{
5605 int ret = 0, num_free_extents;
5606 unsigned int max_recs_needed = 2 * extents_to_split;
5607 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
5608
5609 *ac = NULL;
5610
5611 num_free_extents = ocfs2_num_free_extents(osb, et);
5612 if (num_free_extents < 0) {
5613 ret = num_free_extents;
5614 mlog_errno(ret);
5615 goto out;
5616 }
5617
5618 if (!num_free_extents ||
5619 (ocfs2_sparse_alloc(osb) && num_free_extents < max_recs_needed))
5620 extra_blocks += ocfs2_extend_meta_needed(et->et_root_el);
5621
5622 if (extra_blocks) {
5623 ret = ocfs2_reserve_new_metadata_blocks(osb, extra_blocks, ac);
5624 if (ret < 0) {
5625 if (ret != -ENOSPC)
5626 mlog_errno(ret);
5627 goto out;
5628 }
5629 }
5630
5631out:
5632 if (ret) {
5633 if (*ac) {
5634 ocfs2_free_alloc_context(*ac);
5635 *ac = NULL;
5636 }
5637 }
5638
5639 return ret;
5640}
5641
5590int ocfs2_remove_btree_range(struct inode *inode, 5642int ocfs2_remove_btree_range(struct inode *inode,
5591 struct ocfs2_extent_tree *et, 5643 struct ocfs2_extent_tree *et,
5592 u32 cpos, u32 phys_cpos, u32 len, 5644 u32 cpos, u32 phys_cpos, u32 len, int flags,
5593 struct ocfs2_cached_dealloc_ctxt *dealloc) 5645 struct ocfs2_cached_dealloc_ctxt *dealloc,
5646 u64 refcount_loc)
5594{ 5647{
5595 int ret; 5648 int ret, credits = 0, extra_blocks = 0;
5596 u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos); 5649 u64 phys_blkno = ocfs2_clusters_to_blocks(inode->i_sb, phys_cpos);
5597 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 5650 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
5598 struct inode *tl_inode = osb->osb_tl_inode; 5651 struct inode *tl_inode = osb->osb_tl_inode;
5599 handle_t *handle; 5652 handle_t *handle;
5600 struct ocfs2_alloc_context *meta_ac = NULL; 5653 struct ocfs2_alloc_context *meta_ac = NULL;
5654 struct ocfs2_refcount_tree *ref_tree = NULL;
5655
5656 if ((flags & OCFS2_EXT_REFCOUNTED) && len) {
5657 BUG_ON(!(OCFS2_I(inode)->ip_dyn_features &
5658 OCFS2_HAS_REFCOUNT_FL));
5659
5660 ret = ocfs2_lock_refcount_tree(osb, refcount_loc, 1,
5661 &ref_tree, NULL);
5662 if (ret) {
5663 mlog_errno(ret);
5664 goto out;
5665 }
5666
5667 ret = ocfs2_prepare_refcount_change_for_del(inode,
5668 refcount_loc,
5669 phys_blkno,
5670 len,
5671 &credits,
5672 &extra_blocks);
5673 if (ret < 0) {
5674 mlog_errno(ret);
5675 goto out;
5676 }
5677 }
5601 5678
5602 ret = ocfs2_lock_allocators(inode, et, 0, 1, NULL, &meta_ac); 5679 ret = ocfs2_reserve_blocks_for_rec_trunc(inode, et, 1, &meta_ac,
5680 extra_blocks);
5603 if (ret) { 5681 if (ret) {
5604 mlog_errno(ret); 5682 mlog_errno(ret);
5605 return ret; 5683 return ret;
@@ -5615,7 +5693,8 @@ int ocfs2_remove_btree_range(struct inode *inode,
5615 } 5693 }
5616 } 5694 }
5617 5695
5618 handle = ocfs2_start_trans(osb, ocfs2_remove_extent_credits(osb->sb)); 5696 handle = ocfs2_start_trans(osb,
5697 ocfs2_remove_extent_credits(osb->sb) + credits);
5619 if (IS_ERR(handle)) { 5698 if (IS_ERR(handle)) {
5620 ret = PTR_ERR(handle); 5699 ret = PTR_ERR(handle);
5621 mlog_errno(ret); 5700 mlog_errno(ret);
@@ -5642,9 +5721,20 @@ int ocfs2_remove_btree_range(struct inode *inode,
5642 5721
5643 ocfs2_journal_dirty(handle, et->et_root_bh); 5722 ocfs2_journal_dirty(handle, et->et_root_bh);
5644 5723
5645 ret = ocfs2_truncate_log_append(osb, handle, phys_blkno, len); 5724 if (phys_blkno) {
5646 if (ret) 5725 if (flags & OCFS2_EXT_REFCOUNTED)
5647 mlog_errno(ret); 5726 ret = ocfs2_decrease_refcount(inode, handle,
5727 ocfs2_blocks_to_clusters(osb->sb,
5728 phys_blkno),
5729 len, meta_ac,
5730 dealloc, 1);
5731 else
5732 ret = ocfs2_truncate_log_append(osb, handle,
5733 phys_blkno, len);
5734 if (ret)
5735 mlog_errno(ret);
5736
5737 }
5648 5738
5649out_commit: 5739out_commit:
5650 ocfs2_commit_trans(osb, handle); 5740 ocfs2_commit_trans(osb, handle);
@@ -5654,6 +5744,9 @@ out:
5654 if (meta_ac) 5744 if (meta_ac)
5655 ocfs2_free_alloc_context(meta_ac); 5745 ocfs2_free_alloc_context(meta_ac);
5656 5746
5747 if (ref_tree)
5748 ocfs2_unlock_refcount_tree(osb, ref_tree, 1);
5749
5657 return ret; 5750 return ret;
5658} 5751}
5659 5752
@@ -6481,417 +6574,6 @@ static int ocfs2_cache_extent_block_free(struct ocfs2_cached_dealloc_ctxt *ctxt,
6481 le16_to_cpu(eb->h_suballoc_bit)); 6574 le16_to_cpu(eb->h_suballoc_bit));
6482} 6575}
6483 6576
6484/* This function will figure out whether the currently last extent
6485 * block will be deleted, and if it will, what the new last extent
6486 * block will be so we can update his h_next_leaf_blk field, as well
6487 * as the dinodes i_last_eb_blk */
6488static int ocfs2_find_new_last_ext_blk(struct inode *inode,
6489 unsigned int clusters_to_del,
6490 struct ocfs2_path *path,
6491 struct buffer_head **new_last_eb)
6492{
6493 int next_free, ret = 0;
6494 u32 cpos;
6495 struct ocfs2_extent_rec *rec;
6496 struct ocfs2_extent_block *eb;
6497 struct ocfs2_extent_list *el;
6498 struct buffer_head *bh = NULL;
6499
6500 *new_last_eb = NULL;
6501
6502 /* we have no tree, so of course, no last_eb. */
6503 if (!path->p_tree_depth)
6504 goto out;
6505
6506 /* trunc to zero special case - this makes tree_depth = 0
6507 * regardless of what it is. */
6508 if (OCFS2_I(inode)->ip_clusters == clusters_to_del)
6509 goto out;
6510
6511 el = path_leaf_el(path);
6512 BUG_ON(!el->l_next_free_rec);
6513
6514 /*
6515 * Make sure that this extent list will actually be empty
6516 * after we clear away the data. We can shortcut out if
6517 * there's more than one non-empty extent in the
6518 * list. Otherwise, a check of the remaining extent is
6519 * necessary.
6520 */
6521 next_free = le16_to_cpu(el->l_next_free_rec);
6522 rec = NULL;
6523 if (ocfs2_is_empty_extent(&el->l_recs[0])) {
6524 if (next_free > 2)
6525 goto out;
6526
6527 /* We may have a valid extent in index 1, check it. */
6528 if (next_free == 2)
6529 rec = &el->l_recs[1];
6530
6531 /*
6532 * Fall through - no more nonempty extents, so we want
6533 * to delete this leaf.
6534 */
6535 } else {
6536 if (next_free > 1)
6537 goto out;
6538
6539 rec = &el->l_recs[0];
6540 }
6541
6542 if (rec) {
6543 /*
6544 * Check it we'll only be trimming off the end of this
6545 * cluster.
6546 */
6547 if (le16_to_cpu(rec->e_leaf_clusters) > clusters_to_del)
6548 goto out;
6549 }
6550
6551 ret = ocfs2_find_cpos_for_left_leaf(inode->i_sb, path, &cpos);
6552 if (ret) {
6553 mlog_errno(ret);
6554 goto out;
6555 }
6556
6557 ret = ocfs2_find_leaf(INODE_CACHE(inode), path_root_el(path), cpos, &bh);
6558 if (ret) {
6559 mlog_errno(ret);
6560 goto out;
6561 }
6562
6563 eb = (struct ocfs2_extent_block *) bh->b_data;
6564 el = &eb->h_list;
6565
6566 /* ocfs2_find_leaf() gets the eb from ocfs2_read_extent_block().
6567 * Any corruption is a code bug. */
6568 BUG_ON(!OCFS2_IS_VALID_EXTENT_BLOCK(eb));
6569
6570 *new_last_eb = bh;
6571 get_bh(*new_last_eb);
6572 mlog(0, "returning block %llu, (cpos: %u)\n",
6573 (unsigned long long)le64_to_cpu(eb->h_blkno), cpos);
6574out:
6575 brelse(bh);
6576
6577 return ret;
6578}
6579
6580/*
6581 * Trim some clusters off the rightmost edge of a tree. Only called
6582 * during truncate.
6583 *
6584 * The caller needs to:
6585 * - start journaling of each path component.
6586 * - compute and fully set up any new last ext block
6587 */
6588static int ocfs2_trim_tree(struct inode *inode, struct ocfs2_path *path,
6589 handle_t *handle, struct ocfs2_truncate_context *tc,
6590 u32 clusters_to_del, u64 *delete_start, u8 *flags)
6591{
6592 int ret, i, index = path->p_tree_depth;
6593 u32 new_edge = 0;
6594 u64 deleted_eb = 0;
6595 struct buffer_head *bh;
6596 struct ocfs2_extent_list *el;
6597 struct ocfs2_extent_rec *rec;
6598
6599 *delete_start = 0;
6600 *flags = 0;
6601
6602 while (index >= 0) {
6603 bh = path->p_node[index].bh;
6604 el = path->p_node[index].el;
6605
6606 mlog(0, "traveling tree (index = %d, block = %llu)\n",
6607 index, (unsigned long long)bh->b_blocknr);
6608
6609 BUG_ON(le16_to_cpu(el->l_next_free_rec) == 0);
6610
6611 if (index !=
6612 (path->p_tree_depth - le16_to_cpu(el->l_tree_depth))) {
6613 ocfs2_error(inode->i_sb,
6614 "Inode %lu has invalid ext. block %llu",
6615 inode->i_ino,
6616 (unsigned long long)bh->b_blocknr);
6617 ret = -EROFS;
6618 goto out;
6619 }
6620
6621find_tail_record:
6622 i = le16_to_cpu(el->l_next_free_rec) - 1;
6623 rec = &el->l_recs[i];
6624
6625 mlog(0, "Extent list before: record %d: (%u, %u, %llu), "
6626 "next = %u\n", i, le32_to_cpu(rec->e_cpos),
6627 ocfs2_rec_clusters(el, rec),
6628 (unsigned long long)le64_to_cpu(rec->e_blkno),
6629 le16_to_cpu(el->l_next_free_rec));
6630
6631 BUG_ON(ocfs2_rec_clusters(el, rec) < clusters_to_del);
6632
6633 if (le16_to_cpu(el->l_tree_depth) == 0) {
6634 /*
6635 * If the leaf block contains a single empty
6636 * extent and no records, we can just remove
6637 * the block.
6638 */
6639 if (i == 0 && ocfs2_is_empty_extent(rec)) {
6640 memset(rec, 0,
6641 sizeof(struct ocfs2_extent_rec));
6642 el->l_next_free_rec = cpu_to_le16(0);
6643
6644 goto delete;
6645 }
6646
6647 /*
6648 * Remove any empty extents by shifting things
6649 * left. That should make life much easier on
6650 * the code below. This condition is rare
6651 * enough that we shouldn't see a performance
6652 * hit.
6653 */
6654 if (ocfs2_is_empty_extent(&el->l_recs[0])) {
6655 le16_add_cpu(&el->l_next_free_rec, -1);
6656
6657 for(i = 0;
6658 i < le16_to_cpu(el->l_next_free_rec); i++)
6659 el->l_recs[i] = el->l_recs[i + 1];
6660
6661 memset(&el->l_recs[i], 0,
6662 sizeof(struct ocfs2_extent_rec));
6663
6664 /*
6665 * We've modified our extent list. The
6666 * simplest way to handle this change
6667 * is to being the search from the
6668 * start again.
6669 */
6670 goto find_tail_record;
6671 }
6672
6673 le16_add_cpu(&rec->e_leaf_clusters, -clusters_to_del);
6674
6675 /*
6676 * We'll use "new_edge" on our way back up the
6677 * tree to know what our rightmost cpos is.
6678 */
6679 new_edge = le16_to_cpu(rec->e_leaf_clusters);
6680 new_edge += le32_to_cpu(rec->e_cpos);
6681
6682 /*
6683 * The caller will use this to delete data blocks.
6684 */
6685 *delete_start = le64_to_cpu(rec->e_blkno)
6686 + ocfs2_clusters_to_blocks(inode->i_sb,
6687 le16_to_cpu(rec->e_leaf_clusters));
6688 *flags = rec->e_flags;
6689
6690 /*
6691 * If it's now empty, remove this record.
6692 */
6693 if (le16_to_cpu(rec->e_leaf_clusters) == 0) {
6694 memset(rec, 0,
6695 sizeof(struct ocfs2_extent_rec));
6696 le16_add_cpu(&el->l_next_free_rec, -1);
6697 }
6698 } else {
6699 if (le64_to_cpu(rec->e_blkno) == deleted_eb) {
6700 memset(rec, 0,
6701 sizeof(struct ocfs2_extent_rec));
6702 le16_add_cpu(&el->l_next_free_rec, -1);
6703
6704 goto delete;
6705 }
6706
6707 /* Can this actually happen? */
6708 if (le16_to_cpu(el->l_next_free_rec) == 0)
6709 goto delete;
6710
6711 /*
6712 * We never actually deleted any clusters
6713 * because our leaf was empty. There's no
6714 * reason to adjust the rightmost edge then.
6715 */
6716 if (new_edge == 0)
6717 goto delete;
6718
6719 rec->e_int_clusters = cpu_to_le32(new_edge);
6720 le32_add_cpu(&rec->e_int_clusters,
6721 -le32_to_cpu(rec->e_cpos));
6722
6723 /*
6724 * A deleted child record should have been
6725 * caught above.
6726 */
6727 BUG_ON(le32_to_cpu(rec->e_int_clusters) == 0);
6728 }
6729
6730delete:
6731 ocfs2_journal_dirty(handle, bh);
6732
6733 mlog(0, "extent list container %llu, after: record %d: "
6734 "(%u, %u, %llu), next = %u.\n",
6735 (unsigned long long)bh->b_blocknr, i,
6736 le32_to_cpu(rec->e_cpos), ocfs2_rec_clusters(el, rec),
6737 (unsigned long long)le64_to_cpu(rec->e_blkno),
6738 le16_to_cpu(el->l_next_free_rec));
6739
6740 /*
6741 * We must be careful to only attempt delete of an
6742 * extent block (and not the root inode block).
6743 */
6744 if (index > 0 && le16_to_cpu(el->l_next_free_rec) == 0) {
6745 struct ocfs2_extent_block *eb =
6746 (struct ocfs2_extent_block *)bh->b_data;
6747
6748 /*
6749 * Save this for use when processing the
6750 * parent block.
6751 */
6752 deleted_eb = le64_to_cpu(eb->h_blkno);
6753
6754 mlog(0, "deleting this extent block.\n");
6755
6756 ocfs2_remove_from_cache(INODE_CACHE(inode), bh);
6757
6758 BUG_ON(ocfs2_rec_clusters(el, &el->l_recs[0]));
6759 BUG_ON(le32_to_cpu(el->l_recs[0].e_cpos));
6760 BUG_ON(le64_to_cpu(el->l_recs[0].e_blkno));
6761
6762 ret = ocfs2_cache_extent_block_free(&tc->tc_dealloc, eb);
6763 /* An error here is not fatal. */
6764 if (ret < 0)
6765 mlog_errno(ret);
6766 } else {
6767 deleted_eb = 0;
6768 }
6769
6770 index--;
6771 }
6772
6773 ret = 0;
6774out:
6775 return ret;
6776}
6777
6778static int ocfs2_do_truncate(struct ocfs2_super *osb,
6779 unsigned int clusters_to_del,
6780 struct inode *inode,
6781 struct buffer_head *fe_bh,
6782 handle_t *handle,
6783 struct ocfs2_truncate_context *tc,
6784 struct ocfs2_path *path,
6785 struct ocfs2_alloc_context *meta_ac)
6786{
6787 int status;
6788 struct ocfs2_dinode *fe;
6789 struct ocfs2_extent_block *last_eb = NULL;
6790 struct ocfs2_extent_list *el;
6791 struct buffer_head *last_eb_bh = NULL;
6792 u64 delete_blk = 0;
6793 u8 rec_flags;
6794
6795 fe = (struct ocfs2_dinode *) fe_bh->b_data;
6796
6797 status = ocfs2_find_new_last_ext_blk(inode, clusters_to_del,
6798 path, &last_eb_bh);
6799 if (status < 0) {
6800 mlog_errno(status);
6801 goto bail;
6802 }
6803
6804 /*
6805 * Each component will be touched, so we might as well journal
6806 * here to avoid having to handle errors later.
6807 */
6808 status = ocfs2_journal_access_path(INODE_CACHE(inode), handle, path);
6809 if (status < 0) {
6810 mlog_errno(status);
6811 goto bail;
6812 }
6813
6814 if (last_eb_bh) {
6815 status = ocfs2_journal_access_eb(handle, INODE_CACHE(inode), last_eb_bh,
6816 OCFS2_JOURNAL_ACCESS_WRITE);
6817 if (status < 0) {
6818 mlog_errno(status);
6819 goto bail;
6820 }
6821
6822 last_eb = (struct ocfs2_extent_block *) last_eb_bh->b_data;
6823 }
6824
6825 el = &(fe->id2.i_list);
6826
6827 /*
6828 * Lower levels depend on this never happening, but it's best
6829 * to check it up here before changing the tree.
6830 */
6831 if (el->l_tree_depth && el->l_recs[0].e_int_clusters == 0) {
6832 ocfs2_error(inode->i_sb,
6833 "Inode %lu has an empty extent record, depth %u\n",
6834 inode->i_ino, le16_to_cpu(el->l_tree_depth));
6835 status = -EROFS;
6836 goto bail;
6837 }
6838
6839 dquot_free_space_nodirty(inode,
6840 ocfs2_clusters_to_bytes(osb->sb, clusters_to_del));
6841 spin_lock(&OCFS2_I(inode)->ip_lock);
6842 OCFS2_I(inode)->ip_clusters = le32_to_cpu(fe->i_clusters) -
6843 clusters_to_del;
6844 spin_unlock(&OCFS2_I(inode)->ip_lock);
6845 le32_add_cpu(&fe->i_clusters, -clusters_to_del);
6846 inode->i_blocks = ocfs2_inode_sector_count(inode);
6847
6848 status = ocfs2_trim_tree(inode, path, handle, tc,
6849 clusters_to_del, &delete_blk, &rec_flags);
6850 if (status) {
6851 mlog_errno(status);
6852 goto bail;
6853 }
6854
6855 if (le32_to_cpu(fe->i_clusters) == 0) {
6856 /* trunc to zero is a special case. */
6857 el->l_tree_depth = 0;
6858 fe->i_last_eb_blk = 0;
6859 } else if (last_eb)
6860 fe->i_last_eb_blk = last_eb->h_blkno;
6861
6862 ocfs2_journal_dirty(handle, fe_bh);
6863
6864 if (last_eb) {
6865 /* If there will be a new last extent block, then by
6866 * definition, there cannot be any leaves to the right of
6867 * him. */
6868 last_eb->h_next_leaf_blk = 0;
6869 ocfs2_journal_dirty(handle, last_eb_bh);
6870 }
6871
6872 if (delete_blk) {
6873 if (rec_flags & OCFS2_EXT_REFCOUNTED)
6874 status = ocfs2_decrease_refcount(inode, handle,
6875 ocfs2_blocks_to_clusters(osb->sb,
6876 delete_blk),
6877 clusters_to_del, meta_ac,
6878 &tc->tc_dealloc, 1);
6879 else
6880 status = ocfs2_truncate_log_append(osb, handle,
6881 delete_blk,
6882 clusters_to_del);
6883 if (status < 0) {
6884 mlog_errno(status);
6885 goto bail;
6886 }
6887 }
6888 status = 0;
6889bail:
6890 brelse(last_eb_bh);
6891 mlog_exit(status);
6892 return status;
6893}
6894
6895static int ocfs2_zero_func(handle_t *handle, struct buffer_head *bh) 6577static int ocfs2_zero_func(handle_t *handle, struct buffer_head *bh)
6896{ 6578{
6897 set_buffer_uptodate(bh); 6579 set_buffer_uptodate(bh);
@@ -7300,26 +6982,29 @@ out:
7300 */ 6982 */
7301int ocfs2_commit_truncate(struct ocfs2_super *osb, 6983int ocfs2_commit_truncate(struct ocfs2_super *osb,
7302 struct inode *inode, 6984 struct inode *inode,
7303 struct buffer_head *fe_bh, 6985 struct buffer_head *di_bh)
7304 struct ocfs2_truncate_context *tc)
7305{ 6986{
7306 int status, i, credits, tl_sem = 0; 6987 int status = 0, i, flags = 0;
7307 u32 clusters_to_del, new_highest_cpos, range; 6988 u32 new_highest_cpos, range, trunc_cpos, trunc_len, phys_cpos, coff;
7308 u64 blkno = 0; 6989 u64 blkno = 0;
7309 struct ocfs2_extent_list *el; 6990 struct ocfs2_extent_list *el;
7310 handle_t *handle = NULL; 6991 struct ocfs2_extent_rec *rec;
7311 struct inode *tl_inode = osb->osb_tl_inode;
7312 struct ocfs2_path *path = NULL; 6992 struct ocfs2_path *path = NULL;
7313 struct ocfs2_dinode *di = (struct ocfs2_dinode *)fe_bh->b_data; 6993 struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
7314 struct ocfs2_alloc_context *meta_ac = NULL; 6994 struct ocfs2_extent_list *root_el = &(di->id2.i_list);
7315 struct ocfs2_refcount_tree *ref_tree = NULL; 6995 u64 refcount_loc = le64_to_cpu(di->i_refcount_loc);
6996 struct ocfs2_extent_tree et;
6997 struct ocfs2_cached_dealloc_ctxt dealloc;
7316 6998
7317 mlog_entry_void(); 6999 mlog_entry_void();
7318 7000
7001 ocfs2_init_dinode_extent_tree(&et, INODE_CACHE(inode), di_bh);
7002 ocfs2_init_dealloc_ctxt(&dealloc);
7003
7319 new_highest_cpos = ocfs2_clusters_for_bytes(osb->sb, 7004 new_highest_cpos = ocfs2_clusters_for_bytes(osb->sb,
7320 i_size_read(inode)); 7005 i_size_read(inode));
7321 7006
7322 path = ocfs2_new_path(fe_bh, &di->id2.i_list, 7007 path = ocfs2_new_path(di_bh, &di->id2.i_list,
7323 ocfs2_journal_access_di); 7008 ocfs2_journal_access_di);
7324 if (!path) { 7009 if (!path) {
7325 status = -ENOMEM; 7010 status = -ENOMEM;
@@ -7338,8 +7023,6 @@ start:
7338 goto bail; 7023 goto bail;
7339 } 7024 }
7340 7025
7341 credits = 0;
7342
7343 /* 7026 /*
7344 * Truncate always works against the rightmost tree branch. 7027 * Truncate always works against the rightmost tree branch.
7345 */ 7028 */
@@ -7374,101 +7057,62 @@ start:
7374 } 7057 }
7375 7058
7376 i = le16_to_cpu(el->l_next_free_rec) - 1; 7059 i = le16_to_cpu(el->l_next_free_rec) - 1;
7377 range = le32_to_cpu(el->l_recs[i].e_cpos) + 7060 rec = &el->l_recs[i];
7378 ocfs2_rec_clusters(el, &el->l_recs[i]); 7061 flags = rec->e_flags;
7379 if (i == 0 && ocfs2_is_empty_extent(&el->l_recs[i])) { 7062 range = le32_to_cpu(rec->e_cpos) + ocfs2_rec_clusters(el, rec);
7380 clusters_to_del = 0; 7063
7381 } else if (le32_to_cpu(el->l_recs[i].e_cpos) >= new_highest_cpos) { 7064 if (i == 0 && ocfs2_is_empty_extent(rec)) {
7382 clusters_to_del = ocfs2_rec_clusters(el, &el->l_recs[i]); 7065 /*
7383 blkno = le64_to_cpu(el->l_recs[i].e_blkno); 7066 * Lower levels depend on this never happening, but it's best
7067 * to check it up here before changing the tree.
7068 */
7069 if (root_el->l_tree_depth && rec->e_int_clusters == 0) {
7070 ocfs2_error(inode->i_sb, "Inode %lu has an empty "
7071 "extent record, depth %u\n", inode->i_ino,
7072 le16_to_cpu(root_el->l_tree_depth));
7073 status = -EROFS;
7074 goto bail;
7075 }
7076 trunc_cpos = le32_to_cpu(rec->e_cpos);
7077 trunc_len = 0;
7078 blkno = 0;
7079 } else if (le32_to_cpu(rec->e_cpos) >= new_highest_cpos) {
7080 /*
7081 * Truncate entire record.
7082 */
7083 trunc_cpos = le32_to_cpu(rec->e_cpos);
7084 trunc_len = ocfs2_rec_clusters(el, rec);
7085 blkno = le64_to_cpu(rec->e_blkno);
7384 } else if (range > new_highest_cpos) { 7086 } else if (range > new_highest_cpos) {
7385 clusters_to_del = (ocfs2_rec_clusters(el, &el->l_recs[i]) + 7087 /*
7386 le32_to_cpu(el->l_recs[i].e_cpos)) - 7088 * Partial truncate. it also should be
7387 new_highest_cpos; 7089 * the last truncate we're doing.
7388 blkno = le64_to_cpu(el->l_recs[i].e_blkno) + 7090 */
7389 ocfs2_clusters_to_blocks(inode->i_sb, 7091 trunc_cpos = new_highest_cpos;
7390 ocfs2_rec_clusters(el, &el->l_recs[i]) - 7092 trunc_len = range - new_highest_cpos;
7391 clusters_to_del); 7093 coff = new_highest_cpos - le32_to_cpu(rec->e_cpos);
7094 blkno = le64_to_cpu(rec->e_blkno) +
7095 ocfs2_clusters_to_blocks(inode->i_sb, coff);
7392 } else { 7096 } else {
7097 /*
7098 * Truncate completed, leave happily.
7099 */
7393 status = 0; 7100 status = 0;
7394 goto bail; 7101 goto bail;
7395 } 7102 }
7396 7103
7397 mlog(0, "clusters_to_del = %u in this pass, tail blk=%llu\n", 7104 phys_cpos = ocfs2_blocks_to_clusters(inode->i_sb, blkno);
7398 clusters_to_del, (unsigned long long)path_leaf_bh(path)->b_blocknr);
7399
7400 if (el->l_recs[i].e_flags & OCFS2_EXT_REFCOUNTED && clusters_to_del) {
7401 BUG_ON(!(OCFS2_I(inode)->ip_dyn_features &
7402 OCFS2_HAS_REFCOUNT_FL));
7403
7404 status = ocfs2_lock_refcount_tree(osb,
7405 le64_to_cpu(di->i_refcount_loc),
7406 1, &ref_tree, NULL);
7407 if (status) {
7408 mlog_errno(status);
7409 goto bail;
7410 }
7411
7412 status = ocfs2_prepare_refcount_change_for_del(inode, fe_bh,
7413 blkno,
7414 clusters_to_del,
7415 &credits,
7416 &meta_ac);
7417 if (status < 0) {
7418 mlog_errno(status);
7419 goto bail;
7420 }
7421 }
7422
7423 mutex_lock(&tl_inode->i_mutex);
7424 tl_sem = 1;
7425 /* ocfs2_truncate_log_needs_flush guarantees us at least one
7426 * record is free for use. If there isn't any, we flush to get
7427 * an empty truncate log. */
7428 if (ocfs2_truncate_log_needs_flush(osb)) {
7429 status = __ocfs2_flush_truncate_log(osb);
7430 if (status < 0) {
7431 mlog_errno(status);
7432 goto bail;
7433 }
7434 }
7435
7436 credits += ocfs2_calc_tree_trunc_credits(osb->sb, clusters_to_del,
7437 (struct ocfs2_dinode *)fe_bh->b_data,
7438 el);
7439 handle = ocfs2_start_trans(osb, credits);
7440 if (IS_ERR(handle)) {
7441 status = PTR_ERR(handle);
7442 handle = NULL;
7443 mlog_errno(status);
7444 goto bail;
7445 }
7446 7105
7447 status = ocfs2_do_truncate(osb, clusters_to_del, inode, fe_bh, handle, 7106 status = ocfs2_remove_btree_range(inode, &et, trunc_cpos,
7448 tc, path, meta_ac); 7107 phys_cpos, trunc_len, flags, &dealloc,
7108 refcount_loc);
7449 if (status < 0) { 7109 if (status < 0) {
7450 mlog_errno(status); 7110 mlog_errno(status);
7451 goto bail; 7111 goto bail;
7452 } 7112 }
7453 7113
7454 mutex_unlock(&tl_inode->i_mutex);
7455 tl_sem = 0;
7456
7457 ocfs2_commit_trans(osb, handle);
7458 handle = NULL;
7459
7460 ocfs2_reinit_path(path, 1); 7114 ocfs2_reinit_path(path, 1);
7461 7115
7462 if (meta_ac) {
7463 ocfs2_free_alloc_context(meta_ac);
7464 meta_ac = NULL;
7465 }
7466
7467 if (ref_tree) {
7468 ocfs2_unlock_refcount_tree(osb, ref_tree, 1);
7469 ref_tree = NULL;
7470 }
7471
7472 /* 7116 /*
7473 * The check above will catch the case where we've truncated 7117 * The check above will catch the case where we've truncated
7474 * away all allocation. 7118 * away all allocation.
@@ -7479,25 +7123,10 @@ bail:
7479 7123
7480 ocfs2_schedule_truncate_log_flush(osb, 1); 7124 ocfs2_schedule_truncate_log_flush(osb, 1);
7481 7125
7482 if (tl_sem) 7126 ocfs2_run_deallocs(osb, &dealloc);
7483 mutex_unlock(&tl_inode->i_mutex);
7484
7485 if (handle)
7486 ocfs2_commit_trans(osb, handle);
7487
7488 if (meta_ac)
7489 ocfs2_free_alloc_context(meta_ac);
7490
7491 if (ref_tree)
7492 ocfs2_unlock_refcount_tree(osb, ref_tree, 1);
7493
7494 ocfs2_run_deallocs(osb, &tc->tc_dealloc);
7495 7127
7496 ocfs2_free_path(path); 7128 ocfs2_free_path(path);
7497 7129
7498 /* This will drop the ext_alloc cluster lock for us */
7499 ocfs2_free_truncate_context(tc);
7500
7501 mlog_exit(status); 7130 mlog_exit(status);
7502 return status; 7131 return status;
7503} 7132}
diff --git a/fs/ocfs2/alloc.h b/fs/ocfs2/alloc.h
index 1db4359ccb90..4fb9882ed2d6 100644
--- a/fs/ocfs2/alloc.h
+++ b/fs/ocfs2/alloc.h
@@ -140,8 +140,9 @@ int ocfs2_remove_extent(handle_t *handle, struct ocfs2_extent_tree *et,
140 struct ocfs2_cached_dealloc_ctxt *dealloc); 140 struct ocfs2_cached_dealloc_ctxt *dealloc);
141int ocfs2_remove_btree_range(struct inode *inode, 141int ocfs2_remove_btree_range(struct inode *inode,
142 struct ocfs2_extent_tree *et, 142 struct ocfs2_extent_tree *et,
143 u32 cpos, u32 phys_cpos, u32 len, 143 u32 cpos, u32 phys_cpos, u32 len, int flags,
144 struct ocfs2_cached_dealloc_ctxt *dealloc); 144 struct ocfs2_cached_dealloc_ctxt *dealloc,
145 u64 refcount_loc);
145 146
146int ocfs2_num_free_extents(struct ocfs2_super *osb, 147int ocfs2_num_free_extents(struct ocfs2_super *osb,
147 struct ocfs2_extent_tree *et); 148 struct ocfs2_extent_tree *et);
@@ -233,8 +234,7 @@ int ocfs2_prepare_truncate(struct ocfs2_super *osb,
233 struct ocfs2_truncate_context **tc); 234 struct ocfs2_truncate_context **tc);
234int ocfs2_commit_truncate(struct ocfs2_super *osb, 235int ocfs2_commit_truncate(struct ocfs2_super *osb,
235 struct inode *inode, 236 struct inode *inode,
236 struct buffer_head *fe_bh, 237 struct buffer_head *di_bh);
237 struct ocfs2_truncate_context *tc);
238int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh, 238int ocfs2_truncate_inline(struct inode *inode, struct buffer_head *di_bh,
239 unsigned int start, unsigned int end, int trunc); 239 unsigned int start, unsigned int end, int trunc);
240 240
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 6c9a28a2d3ae..4a75c2e2f855 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -4526,8 +4526,8 @@ int ocfs2_dx_dir_truncate(struct inode *dir, struct buffer_head *di_bh)
4526 4526
4527 p_cpos = ocfs2_blocks_to_clusters(dir->i_sb, blkno); 4527 p_cpos = ocfs2_blocks_to_clusters(dir->i_sb, blkno);
4528 4528
4529 ret = ocfs2_remove_btree_range(dir, &et, cpos, p_cpos, clen, 4529 ret = ocfs2_remove_btree_range(dir, &et, cpos, p_cpos, clen, 0,
4530 &dealloc); 4530 &dealloc, 0);
4531 if (ret) { 4531 if (ret) {
4532 mlog_errno(ret); 4532 mlog_errno(ret);
4533 goto out; 4533 goto out;
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 19d16f2ef81e..4c7a4d8ed32c 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -444,7 +444,6 @@ static int ocfs2_truncate_file(struct inode *inode,
444 int status = 0; 444 int status = 0;
445 struct ocfs2_dinode *fe = NULL; 445 struct ocfs2_dinode *fe = NULL;
446 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb); 446 struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
447 struct ocfs2_truncate_context *tc = NULL;
448 447
449 mlog_entry("(inode = %llu, new_i_size = %llu\n", 448 mlog_entry("(inode = %llu, new_i_size = %llu\n",
450 (unsigned long long)OCFS2_I(inode)->ip_blkno, 449 (unsigned long long)OCFS2_I(inode)->ip_blkno,
@@ -515,13 +514,7 @@ static int ocfs2_truncate_file(struct inode *inode,
515 goto bail_unlock_sem; 514 goto bail_unlock_sem;
516 } 515 }
517 516
518 status = ocfs2_prepare_truncate(osb, inode, di_bh, &tc); 517 status = ocfs2_commit_truncate(osb, inode, di_bh);
519 if (status < 0) {
520 mlog_errno(status);
521 goto bail_unlock_sem;
522 }
523
524 status = ocfs2_commit_truncate(osb, inode, di_bh, tc);
525 if (status < 0) { 518 if (status < 0) {
526 mlog_errno(status); 519 mlog_errno(status);
527 goto bail_unlock_sem; 520 goto bail_unlock_sem;
@@ -1494,7 +1487,7 @@ static int ocfs2_remove_inode_range(struct inode *inode,
1494 if (phys_cpos != 0) { 1487 if (phys_cpos != 0) {
1495 ret = ocfs2_remove_btree_range(inode, &et, cpos, 1488 ret = ocfs2_remove_btree_range(inode, &et, cpos,
1496 phys_cpos, alloc_size, 1489 phys_cpos, alloc_size,
1497 &dealloc); 1490 0, &dealloc, 0);
1498 if (ret) { 1491 if (ret) {
1499 mlog_errno(ret); 1492 mlog_errno(ret);
1500 goto out; 1493 goto out;
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index b7650ccd76d0..9a17251f3d9e 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -544,7 +544,6 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
544 struct buffer_head *fe_bh) 544 struct buffer_head *fe_bh)
545{ 545{
546 int status = 0; 546 int status = 0;
547 struct ocfs2_truncate_context *tc = NULL;
548 struct ocfs2_dinode *fe; 547 struct ocfs2_dinode *fe;
549 handle_t *handle = NULL; 548 handle_t *handle = NULL;
550 549
@@ -586,13 +585,7 @@ static int ocfs2_truncate_for_delete(struct ocfs2_super *osb,
586 ocfs2_commit_trans(osb, handle); 585 ocfs2_commit_trans(osb, handle);
587 handle = NULL; 586 handle = NULL;
588 587
589 status = ocfs2_prepare_truncate(osb, inode, fe_bh, &tc); 588 status = ocfs2_commit_truncate(osb, inode, fe_bh);
590 if (status < 0) {
591 mlog_errno(status);
592 goto out;
593 }
594
595 status = ocfs2_commit_truncate(osb, inode, fe_bh, tc);
596 if (status < 0) { 589 if (status < 0) {
597 mlog_errno(status); 590 mlog_errno(status);
598 goto out; 591 goto out;
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 33dd2a18cb74..6fab28921f3d 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -2509,20 +2509,19 @@ out:
2509 * 2509 *
2510 * Normally the refcount blocks store these refcount should be 2510 * Normally the refcount blocks store these refcount should be
2511 * contiguous also, so that we can get the number easily. 2511 * contiguous also, so that we can get the number easily.
2512 * As for meta_ac, we will at most add split 2 refcount record and 2512 * We will at most add split 2 refcount records and 2 more
2513 * 2 more refcount block, so just check it in a rough way. 2513 * refcount blocks, so just check it in a rough way.
2514 * 2514 *
2515 * Caller must hold refcount tree lock. 2515 * Caller must hold refcount tree lock.
2516 */ 2516 */
2517int ocfs2_prepare_refcount_change_for_del(struct inode *inode, 2517int ocfs2_prepare_refcount_change_for_del(struct inode *inode,
2518 struct buffer_head *di_bh, 2518 u64 refcount_loc,
2519 u64 phys_blkno, 2519 u64 phys_blkno,
2520 u32 clusters, 2520 u32 clusters,
2521 int *credits, 2521 int *credits,
2522 struct ocfs2_alloc_context **meta_ac) 2522 int *ref_blocks)
2523{ 2523{
2524 int ret, ref_blocks = 0; 2524 int ret;
2525 struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
2526 struct ocfs2_inode_info *oi = OCFS2_I(inode); 2525 struct ocfs2_inode_info *oi = OCFS2_I(inode);
2527 struct buffer_head *ref_root_bh = NULL; 2526 struct buffer_head *ref_root_bh = NULL;
2528 struct ocfs2_refcount_tree *tree; 2527 struct ocfs2_refcount_tree *tree;
@@ -2539,14 +2538,13 @@ int ocfs2_prepare_refcount_change_for_del(struct inode *inode,
2539 BUG_ON(!(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL)); 2538 BUG_ON(!(oi->ip_dyn_features & OCFS2_HAS_REFCOUNT_FL));
2540 2539
2541 ret = ocfs2_get_refcount_tree(OCFS2_SB(inode->i_sb), 2540 ret = ocfs2_get_refcount_tree(OCFS2_SB(inode->i_sb),
2542 le64_to_cpu(di->i_refcount_loc), &tree); 2541 refcount_loc, &tree);
2543 if (ret) { 2542 if (ret) {
2544 mlog_errno(ret); 2543 mlog_errno(ret);
2545 goto out; 2544 goto out;
2546 } 2545 }
2547 2546
2548 ret = ocfs2_read_refcount_block(&tree->rf_ci, 2547 ret = ocfs2_read_refcount_block(&tree->rf_ci, refcount_loc,
2549 le64_to_cpu(di->i_refcount_loc),
2550 &ref_root_bh); 2548 &ref_root_bh);
2551 if (ret) { 2549 if (ret) {
2552 mlog_errno(ret); 2550 mlog_errno(ret);
@@ -2557,21 +2555,14 @@ int ocfs2_prepare_refcount_change_for_del(struct inode *inode,
2557 &tree->rf_ci, 2555 &tree->rf_ci,
2558 ref_root_bh, 2556 ref_root_bh,
2559 start_cpos, clusters, 2557 start_cpos, clusters,
2560 &ref_blocks, credits); 2558 ref_blocks, credits);
2561 if (ret) { 2559 if (ret) {
2562 mlog_errno(ret); 2560 mlog_errno(ret);
2563 goto out; 2561 goto out;
2564 } 2562 }
2565 2563
2566 mlog(0, "reserve new metadata %d, credits = %d\n", 2564 mlog(0, "reserve new metadata %d blocks, credits = %d\n",
2567 ref_blocks, *credits); 2565 *ref_blocks, *credits);
2568
2569 if (ref_blocks) {
2570 ret = ocfs2_reserve_new_metadata_blocks(OCFS2_SB(inode->i_sb),
2571 ref_blocks, meta_ac);
2572 if (ret)
2573 mlog_errno(ret);
2574 }
2575 2566
2576out: 2567out:
2577 brelse(ref_root_bh); 2568 brelse(ref_root_bh);
diff --git a/fs/ocfs2/refcounttree.h b/fs/ocfs2/refcounttree.h
index c1d19b1d3ecc..9983ba1570e2 100644
--- a/fs/ocfs2/refcounttree.h
+++ b/fs/ocfs2/refcounttree.h
@@ -47,11 +47,11 @@ int ocfs2_decrease_refcount(struct inode *inode,
47 struct ocfs2_cached_dealloc_ctxt *dealloc, 47 struct ocfs2_cached_dealloc_ctxt *dealloc,
48 int delete); 48 int delete);
49int ocfs2_prepare_refcount_change_for_del(struct inode *inode, 49int ocfs2_prepare_refcount_change_for_del(struct inode *inode,
50 struct buffer_head *di_bh, 50 u64 refcount_loc,
51 u64 phys_blkno, 51 u64 phys_blkno,
52 u32 clusters, 52 u32 clusters,
53 int *credits, 53 int *credits,
54 struct ocfs2_alloc_context **meta_ac); 54 int *ref_blocks);
55int ocfs2_refcount_cow(struct inode *inode, struct buffer_head *di_bh, 55int ocfs2_refcount_cow(struct inode *inode, struct buffer_head *di_bh,
56 u32 cpos, u32 write_len, u32 max_cpos); 56 u32 cpos, u32 write_len, u32 max_cpos);
57 57
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-03 19:04:14 -0500