pytorch

a7d8863c - [vulkan][ez] lock cache mutex when purging for ShaderCache (#83738)

[vulkan][ez] lock cache mutex when purging for ShaderCache (#83738) Acquire mutex before clearing cache in `ShaderCache`. Differential Revision: [D38865341](https://our.internmc.facebook.com/intern/diff/D38865341/) Pull Request resolved: https://github.com/pytorch/pytorch/pull/83738 Approved by: https://github.com/kirklandsign