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Subject[rfc 0/2] timerfd -- implement missing parts to checkpoint and restore timerfd state
Timerfd interface provides to user-space almost all data needed to checkpoint
and restore it, the only missing parts are @clockid (and while @ticks can be
read by simple read() call there is no way to write its value back). The series
exports them to userspace via /proc/pid/fdinfo/N interface and with write()
call one can setup @ticks back to a timer.

Please take a look. This is rfc to figure out if there a better way
to handle timerfds (maybe ioctls with complete timer context or somthing).
Also I'm not sure in one aspect -- if someone sets non-zero @ticks to
a timer, should I mark it as expired? Thomas, could you please give
me some advice on it?

Cyrill


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