Haven't checked mainline, but it is in upstream. Please find it here - http://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git/commit/?id=56ef6718a
Haven't checked mainline, but it is in upstream. Please find it here - http:// git.kernel. org/cgit/ linux/kernel/ git/next/ linux-next. git/commit/ ?id=56ef6718a