forked from luck/tmp_suning_uos_patched
Btrfs: free reserved space on error in a few places
While trying to track down a reserved space leak I noticed a few places where we won't properly clean up reserved space if we have an error, this patch fixes those up. Thanks, Signed-off-by: Josef Bacik <jbacik@fusionio.com> Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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@ -2234,8 +2234,12 @@ static int run_one_delayed_ref(struct btrfs_trans_handle *trans,
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{
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int ret = 0;
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if (trans->aborted)
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if (trans->aborted) {
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if (insert_reserved)
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btrfs_pin_extent(root, node->bytenr,
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node->num_bytes, 1);
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return 0;
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}
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if (btrfs_delayed_ref_is_head(node)) {
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struct btrfs_delayed_ref_head *head;
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@ -2411,6 +2415,14 @@ static noinline int run_clustered_refs(struct btrfs_trans_handle *trans,
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btrfs_free_delayed_extent_op(extent_op);
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if (ret) {
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/*
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* Need to reset must_insert_reserved if
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* there was an error so the abort stuff
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* can cleanup the reserved space
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* properly.
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*/
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if (must_insert_reserved)
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locked_ref->must_insert_reserved = 1;
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btrfs_debug(fs_info, "run_delayed_extent_op returned %d", ret);
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spin_lock(&delayed_refs->lock);
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btrfs_delayed_ref_unlock(locked_ref);
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@ -6731,13 +6743,18 @@ static int alloc_reserved_tree_block(struct btrfs_trans_handle *trans,
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size += sizeof(*block_info);
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path = btrfs_alloc_path();
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if (!path)
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if (!path) {
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btrfs_free_and_pin_reserved_extent(root, ins->objectid,
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root->leafsize);
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return -ENOMEM;
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}
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path->leave_spinning = 1;
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ret = btrfs_insert_empty_item(trans, fs_info->extent_root, path,
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ins, size);
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if (ret) {
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btrfs_free_and_pin_reserved_extent(root, ins->objectid,
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root->leafsize);
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btrfs_free_path(path);
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return ret;
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}
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@ -8498,6 +8498,8 @@ static int __btrfs_prealloc_file_range(struct inode *inode, int mode,
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ins.offset, 0, 0, 0,
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BTRFS_FILE_EXTENT_PREALLOC);
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if (ret) {
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btrfs_free_reserved_extent(root, ins.objectid,
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ins.offset);
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btrfs_abort_transaction(trans, root, ret);
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if (own_trans)
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btrfs_end_transaction(trans, root);
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