On Sun, Jun 18, 2017 at 11:45:07PM -0700, Deepa Dinamani wrote:
> The series aims at isolating data conversions of time_t based structures:
> struct timespec and struct itimerspec at user space boundaries.
> This helps to later change the underlying types to handle y2038 changes
> to these.
> 
> The series is an update to Arnd Bergmann's previous series:
> http://sourceware.org/ml/libc-alpha/2015-05/msg00070.html
> 
> The series particularly aims at changing kernel clock and timer interfaces.
> 
> The changes include
> a. Add data conversion apis for native and compat modes.
> b. Refactor nanosleep and clock_nanosleep logic:
>    1. Move nanosleep and its compat version to a new file nanosleep.c.
>       Alternatively, these can be moved into hrtimer.c.
>    2. Refactor common functions for nanosleep: same functions
>       are used for posix timers and posix stubs.
>    3. Change the posix clock callbacks to take advantage of these
>       common functions.
> b. Move compat syscalls to the same files as the regular syscalls.
> c. Use data conversion apis in the regular and compat syscall paths.
> d. Remove set_fs()/get_fs() calls in the compat syscall path and
>    use the same logic as in the regular syscall path.

Check the stuff already in tip/timers/core; at the very least it overlaps
considerably with your series.  And your variant is a lot more convoluted -
there's no need to have a separate compat restart, etc.
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