BTREE_LARGEST_ROOT_PAGE 54479 ext/sqlite3/libsqlite/sqlite3.c     sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &pgnoRoot);
BTREE_LARGEST_ROOT_PAGE 54729 ext/sqlite3/libsqlite/sqlite3.c       sqlite3BtreeGetMeta(p, BTREE_LARGEST_ROOT_PAGE, &maxRootPgno);
BTREE_LARGEST_ROOT_PAGE 54830 ext/sqlite3/libsqlite/sqlite3.c   if( idx==BTREE_LARGEST_ROOT_PAGE && *pMeta>0 ) pBt->readOnly = 1;
BTREE_LARGEST_ROOT_PAGE 88717 ext/sqlite3/libsqlite/sqlite3.c             { OP_ReadCookie,     0,         1,         BTREE_LARGEST_ROOT_PAGE},