Somewhat confusing, feminist literary criticism started in the 1960s as an application of feminist social concerns to literary study. Gender criticism, which includes male studies and queer studies as well, was actually a somewhat later movement, of the 1990s. Feminist theory comes in two main flavours, as it were, "liberal" and "postmodernist". Gender studies is a purely postmodernist movement.
Liberal feminist criticism mainly focused on understanding the oppression of women and operation of patriarchy in literary texts as part of a movement to improve gender equality in the world. Postmodernist gender and feminist criticism are more theoretical, often concerned with destabilizing the notion of gender or showing that gender is performative rather than innate.