On Fri, 9 Oct 2015, Miroslav Lichvar wrote:
On Fri, Oct 09, 2015 at 10:46:16AM +0100, Thomas Gleixner wrote:
On Thu, 8 Oct 2015, Miroslav Lichvar wrote:
Applications are not allowed to rely on system time being sane? To me the current behavior looks like the kernel is throwing the applications off a cliff, while it's the only thing that can fly :).
As Arnd said, you are creating a wrong sense of safety. They fall off the cliff with your changes as well. The fall is just different. Think about timeouts, user space overflows of time_t etc.
I think vast majority of them won't fall. It doesn't prevent all problems, but at least the userspace agrees with kernel on what the current time it is, that looks to me like the most difficult one to fix in applications.
We need to fix all of it, no matter what.
Yeah, that would be nice, but I don't think it's realistic.
Do you feel the same about preventing the time from reaching KTIME_MAX?
That's going to happen in ~500 years from now.