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btrfs: zoned: advance allocation pointer after tree log node
Since the allocation info of a tree log node is not recorded in the extent tree, calculate_alloc_pointer() cannot detect this node, so the pointer can be over a tree node. Replaying the log calls btrfs_remove_free_space() for each node in the log tree. So, advance the pointer after the node to not allocate over it. Reviewed-by: Josef Bacik <josef@toxicpanda.com> Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com> Signed-off-by: David Sterba <dsterba@suse.com>
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@ -2628,8 +2628,22 @@ int btrfs_remove_free_space(struct btrfs_block_group *block_group,
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int ret;
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bool re_search = false;
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if (btrfs_is_zoned(block_group->fs_info))
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if (btrfs_is_zoned(block_group->fs_info)) {
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/*
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* This can happen with conventional zones when replaying log.
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* Since the allocation info of tree-log nodes are not recorded
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* to the extent-tree, calculate_alloc_pointer() failed to
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* advance the allocation pointer after last allocated tree log
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* node blocks.
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*
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* This function is called from
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* btrfs_pin_extent_for_log_replay() when replaying the log.
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* Advance the pointer not to overwrite the tree-log nodes.
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*/
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if (block_group->alloc_offset < offset + bytes)
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block_group->alloc_offset = offset + bytes;
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return 0;
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}
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spin_lock(&ctl->tree_lock);
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