Received: by 2002:a05:6a10:f3d0:0:0:0:0 with SMTP id a16csp4520657pxv; Tue, 29 Jun 2021 08:54:59 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwAw30W2qQy7F1c7Gi+dR51luLF4w3SvUhn3V8pG4CkJbhj8MjI9K9wweFJ9Zbp1zfXJ8Wz X-Received: by 2002:a50:cdcb:: with SMTP id h11mr20930836edj.366.1624982099048; Tue, 29 Jun 2021 08:54:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1624982099; cv=none; d=google.com; s=arc-20160816; b=hUARsi+JL83wimP4iD+CmlCTpIjk5pxx07JCHnJbdLKiphWqzwE+d0wJ1+plo+wL8O rnxGB0Ca9L0CCpv+YRBQ3Sx9e3Ib1TLuC6g2MenYGRpZ9KJ/jwakXowxAvoUBfLHGY12 LCZxjdYG0WoYkRL4DzfDOrUfsafJyMRww4Vbg9gSsa0KEwEL4ffvZc9XODjzuhPuXvi2 4NxQtSeHCSOQeTJU+opwuNrwZ+ReYWwuJ561KcOhNFuujDpBkHK6RrwCZSRVjR0JxuzC woLMKGfeIVkkaI0QUBHDxrQRT2uw9H0PqUMrW4A/6HhIvSxAd9LFnkeigjPDUzVKJC4/ kTYQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:subject:mime-version:user-agent:message-id :in-reply-to:date:references:cc:to:from; bh=H3lKr/rGgE6OXA/DFTurok9KWt7EGBchnEQMEofs1rk=; b=Y/HhSVK9vOpDX5RLOFDyU7mbYk13UP4/+fKSJRhOG9qhjID57dZOTXzxLVseOITnh0 zqY9ppIznaiHjc2BLSXyShkH15GtpWKyyWw3ilfcf15erwn7HCfYSEyJwQ6KdLmqVs/9 12K2UWGyQzcuxDF/Cqc1A2TJlUUL1Dy3m05CU/EsXMGbk6AM/9lVlMu53cIJoCabZ7EM Sd8DsMeEseinhusaFxeWu5+tBPKjnoXSgtvk98qMIJLlRaai7/bH/pkf502fPE9/jygx 5rLM/gn04yC5uX611+lSdycTbKbtLfsu3L8kuBizqNMYJQhYtkjIbnmAP7V2RYNRPIOU KOhw== ARC-Authentication-Results: i=1; mx.google.com; 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=fail (p=NONE sp=NONE dis=NONE) header.from=xmission.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [23.128.96.18]) by mx.google.com with ESMTP id q16si13471109edd.504.2021.06.29.08.54.35; Tue, 29 Jun 2021 08:54:59 -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; 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=fail (p=NONE sp=NONE dis=NONE) header.from=xmission.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234109AbhF2Pye (ORCPT + 99 others); Tue, 29 Jun 2021 11:54:34 -0400 Received: from out02.mta.xmission.com ([166.70.13.232]:46354 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232929AbhF2Pyd (ORCPT ); Tue, 29 Jun 2021 11:54:33 -0400 Received: from in02.mta.xmission.com ([166.70.13.52]) by out02.mta.xmission.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1lyG1t-007HkF-AW; Tue, 29 Jun 2021 09:52:05 -0600 Received: from ip68-227-160-95.om.om.cox.net ([68.227.160.95]:59472 helo=email.xmission.com) by in02.mta.xmission.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1lyG1s-001hct-9Q; Tue, 29 Jun 2021 09:52:04 -0600 From: ebiederm@xmission.com (Eric W. Biederman) To: Linus Torvalds Cc: Alexey Gladkov , Linux Kernel Mailing List , Linux Containers References: <87fsx1vcr9.fsf@disp2133> Date: Tue, 29 Jun 2021 10:51:57 -0500 In-Reply-To: (Linus Torvalds's message of "Mon, 28 Jun 2021 20:47:12 -0700") Message-ID: <87czs4u0rm.fsf@disp2133> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-SPF: eid=1lyG1s-001hct-9Q;;;mid=<87czs4u0rm.fsf@disp2133>;;;hst=in02.mta.xmission.com;;;ip=68.227.160.95;;;frm=ebiederm@xmission.com;;;spf=neutral X-XM-AID: U2FsdGVkX1/CH09AIniFLWzy282KwTH+6uGeoCx45RM= X-SA-Exim-Connect-IP: 68.227.160.95 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on sa02.xmission.com X-Spam-Level: * X-Spam-Status: No, score=2.0 required=8.0 tests=ALL_TRUSTED,BAYES_40, DCC_CHECK_NEGATIVE,T_TM2_M_HEADER_IN_MSG,XMSubLong,XMSubMetaSxObfu_03, XMSubMetaSx_00 autolearn=disabled version=3.4.2 X-Spam-Virus: No X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * -0.0 BAYES_40 BODY: Bayes spam probability is 20 to 40% * [score: 0.3735] * 0.7 XMSubLong Long Subject * 0.0 T_TM2_M_HEADER_IN_MSG BODY: No description available. * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa02 1397; Body=1 Fuz1=1 Fuz2=1] * 1.2 XMSubMetaSxObfu_03 Obfuscated Sexy Noun-People * 1.0 XMSubMetaSx_00 1+ Sexy Words X-Spam-DCC: XMission; sa02 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: *;Linus Torvalds X-Spam-Relay-Country: X-Spam-Timing: total 282 ms - load_scoreonly_sql: 0.03 (0.0%), signal_user_changed: 3.7 (1.3%), b_tie_ro: 2.6 (0.9%), parse: 0.62 (0.2%), extract_message_metadata: 8 (2.7%), get_uri_detail_list: 0.43 (0.2%), tests_pri_-1000: 3.9 (1.4%), tests_pri_-950: 0.98 (0.3%), tests_pri_-900: 0.81 (0.3%), tests_pri_-90: 135 (47.8%), check_bayes: 127 (45.0%), b_tokenize: 3.2 (1.1%), b_tok_get_all: 3.4 (1.2%), b_comp_prob: 0.95 (0.3%), b_tok_touch_all: 117 (41.5%), b_finish: 0.62 (0.2%), tests_pri_0: 118 (41.6%), check_dkim_signature: 0.35 (0.1%), check_dkim_adsp: 2.2 (0.8%), poll_dns_idle: 0.48 (0.2%), tests_pri_10: 2.3 (0.8%), tests_pri_500: 7 (2.6%), rewrite_mail: 0.00 (0.0%) Subject: Re: [GIT PULL] ucounts: Count rlimits in each user namespace X-SA-Exim-Version: 4.2.1 (built Sat, 08 Feb 2020 21:53:50 +0000) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus Torvalds writes: > Why the "sigpending < LONG_MAX" test in that > > if (override_rlimit || (sigpending < LONG_MAX && sigpending <= > task_rlimit(t, RLIMIT_SIGPENDING))) { > thing? On second look that sigpending < LONG_MAX check is necessary. When inc_rlimit_ucounts detects a problem it returns LONG_MAX. So the check for LONG_MAX is the condensed check to see if there is a problem in any other levels of the ucount hierarchy. Eric