[$] The first half of the 4.19 merge window

As of this writing, Linus Torvalds has pulled just over 7,600 non-mergechangesets into the mainline repository for the 4.19 development cycle.4.19 thus seems to be off to a faster-than-usual start, perhaps because theone-week delay in the opening of the merge window gave subsystemmaintainers a bit more time to get ready. There is, as usual, a lot ofinteresting new code finding its way into the kernel, along with the usualstream of fixes and cleanups.