116   PgHdr *pNextCkpt, *pPrevCkpt;  /* List of pages in the checkpoint journal */  member
403   assert( pPg->pPrevCkpt==0 && pPg->pNextCkpt==0 );  in page_add_to_ckpt_list()
408   pPg->pNextCkpt = pPager->pCkpt;  in page_add_to_ckpt_list()
415     assert( pPg->pPrevCkpt->pNextCkpt==pPg );  in page_remove_from_ckpt_list()
416     pPg->pPrevCkpt->pNextCkpt = pPg->pNextCkpt;  in page_remove_from_ckpt_list()
419     pPg->pPager->pCkpt = pPg->pNextCkpt;  in page_remove_from_ckpt_list()
421   if( pPg->pNextCkpt ){  in page_remove_from_ckpt_list()
422     assert( pPg->pNextCkpt->pPrevCkpt==pPg );  in page_remove_from_ckpt_list()
423     pPg->pNextCkpt->pPrevCkpt = pPg->pPrevCkpt;  in page_remove_from_ckpt_list()
425   pPg->pNextCkpt = 0;  in page_remove_from_ckpt_list()
2172       pNext = pPg->pNextCkpt;  in sqlitepager_ckpt_commit()
2175       pPg->pPrevCkpt = pPg->pNextCkpt = 0;  in sqlitepager_ckpt_commit()