Patent ID: 6842832

Claim:
A system for managing a memory storage device including a physical memory having free space for storing content maintained in compressed form, said compressed memory content organized as pages in said memory storage device, said system comprising: a control device for managing performance of input and output operations of compressed content to and from said memory storage device, said output operations including a memory pageout operations for free memory storage space recovery, said control device maintaining an amount of free storage space readily available for recovery to above a threshold amount so as to enable subsequent pageout operations to be performed; a data construct comprising a list of locations of pages which may be immediately cleared from said physical memory for a subsequent pageout operation, said control device performing a flush operation by accessing said data construct and expediently deleting one or more pages identified in said list, whereby said threshold amount for free storage space recovery is reduced by enabling said expedient deletion enabled by said data construct independently of virtual memory list management.