[clang] [llvm] [clang][modules] Prevent deadlock in module cache (PR #182722)

[Cyndy Ishida via cfe-commits]

cyndyishida wrote:


> Just noticed this. Please do NOT do this, it is against our community policies per this accepted RFC: https://discourse.llvm.org/t/rfc-specify-a-community-policy-for-use-of-private-links/72208

The final community policy is that private links can't explain the context for the change but it's perfectly fine to supplement private links for e.g. downstream automation. 

see: 
> It is also acceptable to add other metadata to the commit message to automate processes, including for downstream consumers. This metadata can include links to resources that are not available to the entire community. However, such links and/or metadata should not be used in place of making the commit message self-explanatory. Note that such non-public links should not be included in the submitted code.


in: https://llvm.org/docs/DeveloperPolicy.html 

https://github.com/llvm/llvm-project/pull/182722