Linux Changes Pipe Behavior After Breaking Problematic Android Apps On Recent Kernels

At the end of 2019 a rework to the Linux kernel's pipe code saw some of its logic reworked to only wake up readers if needed and avoid a possible thundering herd problem. But it turns out some Android libraries abused the functionality and this has led to broken Android applications when moving to recent kernels. While the user-space software is in the wrong, the kernel is sticking to its policy of not breaking user-space and as such Linus Torvalds has changed the code's behavior for Linux 5.14 and to be back-ported to prior stable kernels...