From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out02.mta.xmission.com (out02.mta.xmission.com [166.70.13.232]) (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 BE06917F for ; Tue, 29 Jun 2021 15:52:06 +0000 (UTC) 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) Precedence: bulk X-Mailing-List: containers@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: 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) 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