Re: [PATCH 20/40] mn10300: Use set_current_blocked() and block_sigmask()

[David Howells]

Matt Fleming <matt@xxxxxxxxxxxxxxxxx> wrote:

>  asmlinkage long sys_sigsuspend(int history0, int history1, old_sigset_t mask)
>  {
> -	mask &= _BLOCKABLE;
> -	spin_lock_irq(&current->sighand->siglock);
> +	sigset_t blocked;
> +
>  	current->saved_sigmask = current->blocked;

Can this line create a race, now that it's not protected by a lock?  It is
possible for current->blocked to get altered by another thread.

David
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