Methods, systems, computer-readable media, and apparatuses may provide management of virtual memory. For instance, aspects described herein relate to dynamic generation of nodes in a binary search tree in response to a write command, with each of its nodes being representative of different memory ranges in the virtual system disk. Each node may be associated with a different record in a global linked list, ordered by offset that includes pointers to locations where blocks are stored in a virtual cache and offsets of locations where blocks are stored in the virtual overflow disk. Aspects described herein relate to reading blocks from a virtual system memory to service a read command without storing the blocks in the virtual cache.