typedef struct _MM_PAGED_POOL_INFO
{
     KGUARDED_MUTEX Mutex;
     RTL_BITMAP PagedPoolAllocationMap;
     PMMPTE FirstPteForPagedPool;
     ULONG PagedPoolHint;
     ULONG PagedPoolCommit;
     ULONG AllocatedPagedPool;
} MM_PAGED_POOL_INFO, *PMM_PAGED_POOL_INFO;

Windows Vista Kernel Structures