From: Linus Torvalds <torvalds@linux-foundation.org>
To: Oleg Nesterov <oleg@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Roland McGrath <roland@redhat.com>,
wylda@volny.cz, gregkh@suse.de, jkosina@suse.cz,
Sukadev Bhattiprolu <sukadev@us.ibm.com>,
Serge Hallyn <serue@us.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] pid_ns: zap_pid_ns_processes: use SEND_SIG_NOINFO instead of force_sig()
Date: Thu, 4 Mar 2010 08:06:12 -0800 (PST) [thread overview]
Message-ID: <alpine.LFD.2.00.1003040805550.7046@localhost.localdomain> (raw)
In-Reply-To: <20100303202650.GA15521@redhat.com>
On Wed, 3 Mar 2010, Oleg Nesterov wrote:
>
> zap_pid_ns_processes() uses force_sig(SIGKILL) to ensure SIGKILL
> will be delivered to sub-namespace inits as well. This is correct,
> but we are going to change force_sig_info() semantics.
> See http://bugzilla.kernel.org/show_bug.cgi?id=15395#c31
>
> We can use send_sig_info(SEND_SIG_NOINFO) instead, since
> 614c517d7c00af1b26ded20646b329397d6f51a1 SEND_SIG_NOINFO means
> "from user" and therefore send_signal() will get the correct
> from_ancestor_ns = T flag.
>
> Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus
next prev parent reply other threads:[~2010-03-04 16:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <alpine.LFD.2.00.1003021136400.3616@localhost.localdomain>
[not found] ` <20100302201646.GA10734@redhat.com>
[not found] ` <alpine.LFD.2.00.1003021223060.3616@localhost.localdomain>
[not found] ` <20100303013227.4FFDE89EB@magilla.sf.frob.com>
[not found] ` <alpine.LFD.2.00.1003021740560.3616@localhost.localdomain>
[not found] ` <20100303112343.B89802F@magilla.sf.frob.com>
[not found] ` <alpine.LFD.2.00.1003030930100.3627@localhost.localdomain>
[not found] ` <20100303184412.GA7816@redhat.com>
[not found] ` <alpine.LFD.2.00.1003031053050.3599@localhost.localdomain>
[not found] ` <20100303193003.GA10734@redhat.com>
2010-03-03 20:26 ` Oleg Nesterov
2010-03-04 7:20 ` Serge E. Hallyn
2010-03-04 16:06 ` Linus Torvalds [this message]
2010-03-04 20:48 ` Roland McGrath
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