pytorch

851e89c8 - Revert "Expandable blocks in allocator (#96995)"

Revert "Expandable blocks in allocator (#96995)" This reverts commit 6a50b83b739c2d37d0f518f98b8e624eca0ea153. Reverted https://github.com/pytorch/pytorch/pull/96995 on behalf of https://github.com/izaitsevfb due to Breaks internal tests