Linux 5.1 rc2

Well, we're a week away from the merge window close, and here's rc2.Things look fairly normal, but honestly, rc2 is usually too early totell.  People haven't necessarily had time to notice problems yet.Which is just another way of saying "please test harder".Nothing particularly stands out. Yes, we had some fixes for the newio_ring code for issues that were discussed when merging it. Otherthan that, worth noting is that the bulk of the patches are fortooling, not the core kernel. In fact, about two thirds of the patchis just for the tools/ subdirectory, most of it due to some late perftool updates. The people involved promise they're done.Ignoring the tools thing, the rest is just spread all over, and it'sall pretty small. It's _roughly_ evenly split between arch updates,drivers and filesystem code, but that's partially because of theaforementioned io_ring thing (making the filesystem side pop a bit).But there's minor noise elsewhere too. Most of the arch/ code is alate ARC update. But none of it really is all that large or worrisome.Shortlog appended for a flavor of the details (and you'll see the perfdominance there)Go test,                    Linus