https://bugzilla.kernel.org/show_bug.cgi?id=71051
--- Comment #15 from Hin-Tak Leung htl10@users.sourceforge.net --- (In reply to Hin-Tak Leung from comment #14) ...
To answer my own question, attachment 150801 [details] is in 3.17-rcX, so will be in 3.17 proper...
besides v3.17-rc6, it is also in v3.16.4 .