/// <summary>
/// If some blocks at the end of the block list no longer belongs to
/// any inode, collect them and update the block list.
/// </summary>
public virtual void CollectBlocksAndClear(BlockStoragePolicySuite bsps, INodeFile
file, INode.BlocksMapUpdateInfo info, IList <INode> removedINodes)
{
// check if everything is deleted.
if (IsCurrentFileDeleted() && GetDiffs().AsList().IsEmpty())
{
file.DestroyAndCollectBlocks(bsps, info, removedINodes);
return;
}
// find max file size.
long max;
FileDiff diff = GetDiffs().GetLast();
if (IsCurrentFileDeleted())
{
max = diff == null ? 0 : diff.GetFileSize();
}
else
{
max = file.ComputeFileSize();
}
// Collect blocks that should be deleted
FileDiff last = diffs.GetLast();
BlockInfoContiguous[] snapshotBlocks = last == null ? null : last.GetBlocks();
if (snapshotBlocks == null)
{
file.CollectBlocksBeyondMax(max, info);
}
else
{
file.CollectBlocksBeyondSnapshot(snapshotBlocks, info);
}
}