Received: by 2002:a05:6a10:9848:0:0:0:0 with SMTP id x8csp3704712pxf; Mon, 15 Mar 2021 16:46:28 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzrklwoWtRNhkVTXyS0B1++1zRNGJWt6nhDLrbiDXJYPEdH2/9urUcl3sAVW5n8M6YTqw88 X-Received: by 2002:a17:906:c414:: with SMTP id u20mr26208151ejz.215.1615851988079; Mon, 15 Mar 2021 16:46:28 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1615851988; cv=none; d=google.com; s=arc-20160816; b=V91cFGCnBluvjZTU4/hXC+8mA+jssmRkzP5TF1UNnDK8uq5Xuxtu36+xrJThHlUn9N 8DTbg2n2db1RHJ1omYvKWMFywZRpa4aQEZkBJJ3NztbUNKZonZslpa57VLzJuL1OkIG4 XlAFA9Ve2r8vZNQKmydaoQqGoqu+ZKuEbJ4wchHmTDdoxiPLkJfaYoYzGdY4tqNYSUd/ ExZ85fO4QdCTmpy67GefmqQtkCQQKy0dGproXqQLboC+MEGkdSpkAwtfS940Age8vF99 i5ruihZzF75+LwM7vl0jLgQBygdAmKMRmwsXHOWdUkSURzNCgyBTrhxHWviHz/WGQ2j2 lKrw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:user-agent:in-reply-to:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :dkim-signature; bh=UQyD3QKu3caWkZUuTQn9pF4ZV3ttdN3IwL6Y9T1OnFE=; b=lTBfoWy96A3osDXSv7EGC6khEjvKdemj+rRO7OmNPnshPH8lTr589g4vXm9BYTHhbX 4thesLQ7En+0P/QdM+VXPq1c8HOSinnlohMiI/7z29c+araSi+QsqoCU7XqaXAcZr6Kh 6M04418cpYE1XXKvDD8bkC/idNkPYFyrR9PUIA+RimqzdDfpjTyVRtb7GTcCijH8M9Di +KEXXDiYS6Vx7eZAsbNJ8xTigvL4UJlZotVe+YGGwpC0jtzqjot/lixMDsyQrrjJbKyw qyj6Q0WOduMaPKgHRfFW691krHjdpgIhn4GAyKZP4xoYjCFMvlJBrceOOm0V+lPGKWXk IprQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=bhDQaLdZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id u18si12017045ejk.68.2021.03.15.16.46.05; Mon, 15 Mar 2021 16:46:28 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@redhat.com header.s=mimecast20190719 header.b=bhDQaLdZ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231643AbhCOSk6 (ORCPT + 99 others); Mon, 15 Mar 2021 14:40:58 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:40015 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231637AbhCOSkq (ORCPT ); Mon, 15 Mar 2021 14:40:46 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1615833645; 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=UQyD3QKu3caWkZUuTQn9pF4ZV3ttdN3IwL6Y9T1OnFE=; b=bhDQaLdZbjosqcWZI06fzU5BWoiKof7Y+srU/UxN2hUx/knwuBIyQRZ6CtwDbaPwJvl41N rQX8M/EkWBPopr2P8ia1ngBkFiVRs3Vqx1A/cnSvfsmM4z+PD286jYeLNCuONpLhjn6tb1 oj+BfPWCwmTqXxXT/OX1EcG8RThGUGU= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-284-P1v6eay2Ot6NtFrA0tl0sw-1; Mon, 15 Mar 2021 14:40:43 -0400 X-MC-Unique: P1v6eay2Ot6NtFrA0tl0sw-1 Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 07DB718D6A2A; Mon, 15 Mar 2021 18:40:42 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.40.194.107]) by smtp.corp.redhat.com (Postfix) with SMTP id 7F36D5D751; Mon, 15 Mar 2021 18:40:40 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Mon, 15 Mar 2021 19:40:41 +0100 (CET) Date: Mon, 15 Mar 2021 19:40:39 +0100 From: Oleg Nesterov To: Jim Newsome Cc: Andrew Morton , "Eric W . Biederman" , Christian Brauner , linux-kernel@vger.kernel.org Subject: Re: [PATCH v7] do_wait: make PIDTYPE_PID case O(1) instead of O(n) Message-ID: <20210315184038.GC13620@redhat.com> References: <20210314231544.9379-1-jnewsome@torproject.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210314231544.9379-1-jnewsome@torproject.org> User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/14, Jim Newsome wrote: > > Since v5: > * Switched back to explicitly looking up by tgid and then pid. OK, as I said I won't argue, still looks good to me. Reviewed-by: Oleg Nesterov