tree cf97bd53de877c12798368a4e06bba21285c0763
parent 7a434814c7a6500b08bf4419ba8712b152d08d08
author Daniel Walker <dwalker@mvista.com> 1173174131 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1173202225 -0800

[PATCH] fix vsyscall settimeofday

I've only seen this on x86_64.

The vsyscall state only gets updated when a timer interrupts comes in.  So
if the time is set long before the next timer, there will be a period when
a gettimeofday() won't reflect the correct time.

I added an explicit update_vsyscall() during the settimeofday(), that way
the vsyscall state doesn't get stale.

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>