mips: question about switch_to()->__sanitize_fcr31()

[Oleg Nesterov <oleg@redhat.com>]

Hello,

I know absolutely nothing about arch/mips, I can't even find the
definition of "current" or the caller of switch_to().

So, __sanitize_fcr31() is called by switch_to() and it does
force_fcr31_sig(fcr31, pc, next).

Was "current" already updated at this stage so that next == current?


Why I am asking. I want to add

	// otherwise the usage of ->siglock is not safe
	WARN_ON(!(t == current || task_is_traced(t)));

into force_sig_info_to_task() and simplify it a bit, but I don't
know if "t == current" is already true at the start of switch_to().


Thanks,

Oleg.