From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 46333FC0C for ; Wed, 19 Jun 2024 20:20:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718828430; cv=none; b=IFa+vz//e3gguRjSSLxB+/9W7WLAsMYuTekiw/FjGQOzRvWUNVP45POpJqFeKh+CQ7akFLE8dk1Hj0rrPfR4V2s6uGa7lETc7ou3fTdA6X9iSGjazj2Gj04VlkL6+g/enxPVgIQbFiwQXXEAcG4zeuugqXgrOhoMCWsxd/OMKAs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1718828430; c=relaxed/simple; bh=KSnatOZ2XEJu7l7htYBwpHhuBu8rEROA4E7OCUYQtWI=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=h0FZh0gh/aky3OIZamnw4c6QgvQ2JIIHa/y5gu++7ydok6avxbgan2NHPaNmdq4NEieRDms6iHvrqzGwBUqVCXj6970LI6G2WklB1cu7dy6+nkg7jYpXm2djTNUZP8nHUjC86R5OQOeJrFlrxpddh30+C0IH1yVQtqWD4zAwN/w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=KK0RTG31; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="KK0RTG31" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1718828428; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=KSnatOZ2XEJu7l7htYBwpHhuBu8rEROA4E7OCUYQtWI=; b=KK0RTG31KtXdAfb3quQW1OpSd9v8sAfYKOcYwYrNhca+oK75V8r9N5bVlGgp5c7MhrBctt D5sVp/iTzSfAzWklgdvl6fuIzBp5yLkTXN/8hmrGq/1B375J3HeOa2uDlhWjoj6+HLO9YJ dfrI7sFn9Rs6a1FPLpipXJs65DNwX2Q= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-101-xLa85BRuOLS4o_ggPO3yeA-1; Wed, 19 Jun 2024 16:20:23 -0400 X-MC-Unique: xLa85BRuOLS4o_ggPO3yeA-1 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 404E619560AF; Wed, 19 Jun 2024 20:20:22 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.45.224.168]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id 89CE43000225; Wed, 19 Jun 2024 20:20:20 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Wed, 19 Jun 2024 22:18:50 +0200 (CEST) Date: Wed, 19 Jun 2024 22:18:48 +0200 From: Oleg Nesterov To: "Eric W. Biederman" Cc: Andrew Morton , Tejun Heo , linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/1] exit: kill signal_struct->quick_threads Message-ID: <20240619201847.GG24240@redhat.com> References: <20240609142342.GA11165@redhat.com> <87r0d5t2nt.fsf@email.froward.int.ebiederm.org> <20240610152902.GC20640@redhat.com> <20240613154541.GD18218@redhat.com> <87ikyamf4u.fsf@email.froward.int.ebiederm.org> <20240617183758.GB10753@redhat.com> <87iky5k2yi.fsf@email.froward.int.ebiederm.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87iky5k2yi.fsf@email.froward.int.ebiederm.org> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 On 06/18, Eric W. Biederman wrote: > ... snip the parts I don't really understand so far ;) ... > The patchset should be be good enough to answer what I think needs to > happen with quick_threads. OK. as I said I'll _try_ to understand it in a few days. > I also remember that the cgroup iterators where somewhat hopeless when > there were zombie thread group leaders. What do you mean? Just in case, we have c03cd7738a83b but it seems you mean something else? Oleg.