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alarmtimer: Make nanosleep() time namespace aware

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clock_nanosleep() accepts absolute values of expiration time when the
TIMER_ABSTIME flag is set. This absolute value is inside the task's
time namespace and has to be converted to the host's time.

Co-developed-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20191112012724.250792-16-dima@arista.com
This commit is contained in:
Andrei Vagin 2019-11-12 01:27:04 +00:00 committed by Thomas Gleixner
parent 7da8b3a44b
commit 0b9b9a3b16
1 changed files with 2 additions and 0 deletions
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kernel/time/alarmtimer.c
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@ -839,6 +839,8 @@ static int alarm_timer_nsleep(const clockid_t which_clock, int flags,
ktime_t now = alarm_bases[type].get_ktime();
exp = ktime_add_safe(now, exp);
} else {
exp = timens_ktime_to_host(which_clock, exp);
}
ret = alarmtimer_do_nsleep(&alarm, exp, type);