[$] 6.17 Merge window, part 1

As of this writing, just over 4,000 non-merge changesets have been pulled
into the mainline repository during the 6.17 merge window. When he announced
the merge-window opening, Linus Torvalds let it be known that, due to a
busy personal schedule, he was likely to pull changes more quickly than
usual this time around; that has been borne out to some extent. Changes
merged so far are focused on core-kernel and filesystem work; read on for
the details.