Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/27374

Signed-off-by: Edward Z. Yang <ezyang@fb.com>

Test Plan: Imported from OSS

Differential Revision: D17809770

Pulled By: ezyang

fbshipit-source-id: 75bd97426494a7bbbf08f9bce7563d35871443d8