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nanosleep: Use get_timespec64() and put_timespec64()

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Usage of these apis and their compat versions makes
the syscalls: clock_nanosleep and nanosleep and
their compat implementations simpler.

This is a preparatory patch to isolate data conversions to
struct timespec64 at userspace boundaries. This helps contain
the changes needed to transition to new y2038 safe types.

Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Deepa Dinamani 2017-06-24 11:45:06 -07:00 • committed by Al Viro
parent 5c4994102f
commit c0edd7c9ac
5 changed files with 26 additions and 38 deletions
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4
kernel/time/alarmtimer.c
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@ -712,14 +712,14 @@ static int alarmtimer_do_nsleep(struct alarm *alarm, ktime_t absexp,
alarmtimer_freezerset(absexp, type);
restart = &current->restart_block;
if (restart->nanosleep.type != TT_NONE) {
struct timespec rmt;
struct timespec64 rmt;
ktime_t rem;
rem = ktime_sub(absexp, alarm_bases[type].gettime());
if (rem <= 0)
return 0;
rmt = ktime_to_timespec(rem);
rmt = ktime_to_timespec64(rem);
return nanosleep_copyout(restart, &rmt);
}