From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7E474C433F5 for ; Mon, 25 Apr 2022 19:17:43 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D76E76B0093; Mon, 25 Apr 2022 15:17:42 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id D260E6B0096; Mon, 25 Apr 2022 15:17:42 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id BC67A6B0098; Mon, 25 Apr 2022 15:17:42 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.28]) by kanga.kvack.org (Postfix) with ESMTP id ADCA46B0093 for ; Mon, 25 Apr 2022 15:17:42 -0400 (EDT) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 85C2F60C8D for ; Mon, 25 Apr 2022 19:17:42 +0000 (UTC) X-FDA: 79396360764.08.14E585D Received: from mail-pj1-f54.google.com (mail-pj1-f54.google.com [209.85.216.54]) by imf15.hostedemail.com (Postfix) with ESMTP id D8941A0040 for ; Mon, 25 Apr 2022 19:17:37 +0000 (UTC) Received: by mail-pj1-f54.google.com with SMTP id z5-20020a17090a468500b001d2bc2743c4so320413pjf.0 for ; Mon, 25 Apr 2022 12:17:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=date:from:to:cc:subject:in-reply-to:message-id:references :mime-version; bh=dBJVxT2oQQKuTmNqO746HArxprk0i5OOxyDSI22NCDM=; b=S5hCr2r8dSdLX7LojMvfZCiuELMGIzpE16tCfuLV+niqkLCNloOVHl8rfWXGxMz/RX /uJQeo3CdHZHmOYvDrf9U5VYZnpMd7Se8qzctwcUB8msXmPxwTbqS17Yzb+bEAQGjEui nhFVrlENVGbWGTP0Uo26WNZiuKvHpMPJ+Z/wI0KMOLtzXP16rklqjH5mGGPu19luqczc QadckueHU9DRU+yH4VNbE8IMBAogntAzhSJXQJPtEJbL8SFmZ9ypBs99Rebm9dPjIFBY 7Q/4tAe0VsPh34z+ZAK0xYHwGSJjNzVpvc3PF3dKhIZLj+0Rpv858GdIDBAb/kNvM/wK nUtw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:in-reply-to:message-id :references:mime-version; bh=dBJVxT2oQQKuTmNqO746HArxprk0i5OOxyDSI22NCDM=; b=vSmcioNCYO1QGGEOIDKa04v/GdCbmgIacn/sH2miVcOh4UZXyPoZOu90W2SRNqyLCf t2IOffgSJGnAf9Kh2A7HoD8e/9ATfJzLAEBzJN9zLg20lS3nQTvveT/Bs3XsUQCy/GN1 0dV2CdVc+dTorXuVV9ZVGt0njF4HkMxVU4KkTKBNm9NzUtqAeTke3er0pMUZaplFHZCY kpTy+Ngv6vCq1N6j1cgEJJZich6i0jVVBMLjCjgOjz61x2FCqe2xZQ/8Q9gAxuEmra3B dgVEVhx6z317ljKSjNCFn7li7KzeM+3vL5w5ITvLKSbQMJV/5OXTU3IcRYxUrkM1NtXB PFZA== X-Gm-Message-State: AOAM533BT1RR9r3kqSCntQPLTH5svtb1wIbhuqx8I4BNLy8qAmuvHQcz BgUG/3cax591RaQw0szvnzUDpw== X-Google-Smtp-Source: ABdhPJwegg1ZVtvJWdZISaAZfuEHL2yovHoZcVRerWAaWqJBC8aaKMs8ZIcNrjgGbuQO8/Cx9M0MIQ== X-Received: by 2002:a17:902:d545:b0:15d:4a7:d3c1 with SMTP id z5-20020a170902d54500b0015d04a7d3c1mr8631515plf.52.1650914260912; Mon, 25 Apr 2022 12:17:40 -0700 (PDT) Received: from [2620:15c:29:204:185b:8dcc:84d4:fb71] ([2620:15c:29:204:185b:8dcc:84d4:fb71]) by smtp.gmail.com with ESMTPSA id 130-20020a621488000000b00505e6092973sm11814391pfu.68.2022.04.25.12.17.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 25 Apr 2022 12:17:40 -0700 (PDT) Date: Mon, 25 Apr 2022 12:17:39 -0700 (PDT) From: David Rientjes To: Yosry Ahmed cc: Johannes Weiner , Michal Hocko , Shakeel Butt , Andrew Morton , Roman Gushchin , Tejun Heo , Zefan Li , Jonathan Corbet , Shuah Khan , Yu Zhao , Dave Hansen , Wei Xu , Greg Thelen , Chen Wandun , Vaibhav Jain , =?UTF-8?Q?Michal_Koutn=C3=BD?= , Tim Chen , cgroups@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org Subject: Re: [PATCH v5 2/4] selftests: cgroup: return -errno from cg_read()/cg_write() on failure In-Reply-To: <20220425190040.2475377-3-yosryahmed@google.com> Message-ID: References: <20220425190040.2475377-1-yosryahmed@google.com> <20220425190040.2475377-3-yosryahmed@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-Rspamd-Queue-Id: D8941A0040 X-Stat-Signature: o4ggmwo5391bpc5qgs1f8db5d3rnxawo Authentication-Results: imf15.hostedemail.com; dkim=pass header.d=google.com header.s=20210112 header.b=S5hCr2r8; dmarc=pass (policy=reject) header.from=google.com; spf=pass (imf15.hostedemail.com: domain of rientjes@google.com designates 209.85.216.54 as permitted sender) smtp.mailfrom=rientjes@google.com X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1650914257-189664 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, 25 Apr 2022, Yosry Ahmed wrote: > Currently, cg_read()/cg_write() returns 0 on success and -1 on failure. > Modify them to return the -errno on failure. > > Signed-off-by: Yosry Ahmed > Acked-by: Shakeel Butt Acked-by: David Rientjes