CREATE TABLE table_30149 ("No. in series" FLOAT, "No. in season" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT, "Production" TEXT, "U.S. viewers  ( in millions ) " TEXT)

Who directed the episode whose production code is 2m5901?
SELECT "Directed by" FROM table_30149 WHERE "Production" = '2M5901'
SELECT "Directed by" FROM "table_30149" WHERE "Production" = '2M5901'