Linux 5.2 rc4

No, I'm not confused, and I haven't lost track of what day it is, I doactually know that it's still Saturday here, not Sunday, and I'm justdoing rc4 a bit early because I'll be on an airplane during my normalrelease time. And while I've done releases on airports and airplanesbefore, I looked at my empty queue of pull requests and went "let'sjust do it now".We've had a fairly calm release so far, and on the whole that seems tohold. rc4 isn't smaller than rc3 was (it's a bit bigger), but rc3 wasfairly small, so the size increase isn't all that worrisome. I do hopethat we'll start actually shrinking now, though.The SPDX conversions do continue to stand out, and make the diffstat abit noisy. They don't affect actual code, so it's not like we shouldhave any issues with them, but it makes the patch statistics look abit odd. There's just a lot more files changed than is normal in therc phase, and 90+% of that changed file list comes from the SPDXchanges. Of course, the SPDX changes also account for 95+% percent ofthe removed lines in rc4, which is why I'm not complaining. It doesmake the copyright boilerplates be a lot more legible to humans too,not just for scripting.But it does make the diff almost impossible to read, because so muchof it is due to just the SPDX notice work. You can use interdiff toskip the SPDX stuff if you really want to, and if you do, you'll seethe usual arch updates (arm64, mips, parisc, nds32) various randomdrivers updates (gpu stands out, some rdma), networking fixes,filesystems (ceph, ovlfs, xfs). And misc other stuff.But the appended shortlog is probably even more informative. None ofit really looks all that gnarly.                Linus