Linux 3.15 will also include a better renameat2 function with parameters that allow to write better pid file placing and handling without race conditions.
Of course, it'd be nice if we could solve PID races entirely. The POSIX system is unbelievably broken compared to how NT does it. (No, "PID wraparound happens slow enough not to matter" is not a good foundation for a robust system.)
Here's the LKML listing, because that little asp classic site seems to be having some slowness, and they didn't really include much more than a small summary, which is about as big as the whole lkml article anyway.
