Linux 3.18 rc2

Another week, another rc - and now the merge window is *definitely* closed.I had hoped that the rc1 release would mean that a few stragglerswould quickly surface, and then the rest of the rc would be morenormal. But no, I had straggling merge-window pull requests come inall week, and rc2 is bigger than I'd like.Oh well. It's not like I'm hugely surprised, but it does mean that I'mprobably going to be unpleasant next week to anybody who tries to getme to pull things that I think looks like "development" rather than"fixes".  You've been warned. I effectively gave you a full threeweeks of merge window, now it's time for bugfixes, and not randomother noise. Ok?And to be honest, we've had bigger rc2's in history. Not recently,though. Both 3.3 and 3.4 had big -rc2 releases, and 3.15 (which wasthe largest release ever, iirc) came reasonably close.At least _part_ of the size is the very long-delayed overlayfs mergethat I already mentioned in the rc1 release message as being pending.Let's see how much fallout that all causes, but it's been around for along time (partly because it needed various vfs-layer things tointegrate cleanly), and I think it's in good shape. Knock wood.So at least partially as a result of that overlayfs merge, about athird of the patch is filesystems. It's not _just_ overlayfs, though,there was a late ext4 merge request that I think is actually bigger,at least partly due to some extent handling refactoring.The rest is the more usual driver updates (thermal, watchdog, scsitarget, ACPI & PM, misc other updates) and architecture updates (arc,arm, powerpc, mips, x86). Some Documentation and include file updatesrounds out the rest.Shortlog appended for details, I think it's still well within themailing list size constraints.                   Linus