linux-kernel - Re: [PATCH 18/20] signal: Add calculate

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Message-ID: <20180726162400.GB467@redhat.com>
Date:   Thu, 26 Jul 2018 18:24:00 +0200
From:   Oleg Nesterov <oleg@...hat.com>
To:     "Eric W. Biederman" <ebiederm@...ssion.com>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Wen Yang <wen.yang99@....com.cn>,
        majiang <ma.jiang@....com.cn>
Subject: Re: [PATCH 18/20] signal: Add calculate_sigpending()

On 07/26, Eric W. Biederman wrote:
>
> > Easy to fix, but perhaps we can simply add recalc_sigpending() into
> > schedule_tail() ? It already does more than just finish_task_switch/etc.
> >
> > This way we do not need the new helper (which btw can only be used by
> > copy_process).
>
> The problem I have with reusing recalc_sigpending is that it does not
> set TIF_SIGPENDING if (freezing || klp_patch_pending).

Ah, indeed, you are right.

Oleg.