public override void FreeSegment(Segment seg)
{
//remove it from cache
this.m_cache.Delete(seg.SegmentID);
//remove it from LRU list
seg.BreakLinks();
uint offset = 0;
int length = -1;
if (m_segTree.GetAddr(seg.SegmentID, ref offset, ref length))
{
Debug.Assert(length != -1);
//this segment's addressing info is in the system.
//put this segment into the free tree
m_spaceTree.SetSegmentFree(offset, length);
//remove its addressing information from segTree
m_segTree.DeleteSegment(seg.SegmentID);
}
//if this segment is never written back to disk, just delete it from memory is enough
}
