sqlitepager_ckpt_commit
rc = sqlitepager_ckpt_commit(pBt->pPager);
sqlitepager_ckpt_commit(pPager);
sqlitepager_ckpt_commit(pPager);
int sqlitepager_ckpt_commit(Pager*);
rc = sqlitepager_ckpt_commit(pPager);