The 4.0 kernel has been released

Linus has released the 4.0 kernel right onschedule. "Feature-wise, 4.0 doesn't have all that muchspecial. Much have been made of the new kernel patching infrastructure, butrealistically, that not only wasn't the reason for the version numberchange, we've had much bigger changes in other versions. So this is verymuch a 'solid code progress' release." Beyond the (incomplete)live-patching mechanism, this release includes the removal of theremap_file_pages() system call, improved persistent memory support, the lazytime mount option, and thekernel address sanitizer.