from ux_api.h:2328
typedef struct UX_MEMORY_BLOCK_STRUCT
{
ULONG ux_memory_block_size;
ULONG ux_memory_block_status;
struct UX_MEMORY_BLOCK_STRUCT
*ux_memory_block_next;
struct UX_MEMORY_BLOCK_STRUCT
*ux_memory_block_previous;
} UX_MEMORY_BLOCK;