Kernel prepatch 5.11-rc7

The 5.11-rc7 kernel prepatch is out fortesting. "Anyway, this is hopefully the last rc for this release, unless somesurprise comes along and makes a travesty of our carefully laid plans.It happens.Nothing hugely scary stands out, with the biggest single part of thepatch being some new self-tests. In fact, about a quarter of the patchis documentation and selftests."