Patch Detail
get:
Show a patch.
patch:
Update a patch.
put:
Update a patch.
GET /api/1.0/patches/2197308/?format=api
{ "id": 2197308, "url": "http://patchwork.ozlabs.org/api/1.0/patches/2197308/?format=api", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.0/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/" }, "msgid": "<20260217163250.2326001-2-surenb@google.com>", "date": "2026-02-17T16:32:48", "name": "[v2,1/3] mm/vma: cleanup error handling path in vma_expand()", "commit_ref": null, "pull_url": null, "state": "handled-elsewhere", "archived": false, "hash": "5665d6991456e26427dfada61b048e019b5c6c99", "submitter": { "id": 74729, "url": "http://patchwork.ozlabs.org/api/1.0/people/74729/?format=api", "name": "Suren Baghdasaryan", "email": "surenb@google.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260217163250.2326001-2-surenb@google.com/mbox/", "series": [ { "id": 492454, "url": "http://patchwork.ozlabs.org/api/1.0/series/492454/?format=api", "date": "2026-02-17T16:32:47", "name": "Use killable vma write locking in most places", "version": 2, "mbox": "http://patchwork.ozlabs.org/series/492454/mbox/" } ], "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2197308/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-16907-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256\n header.s=20230601 header.b=tpQ5T3tF;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.ozlabs.org\n (client-ip=2404:9400:21b9:f100::1; helo=lists.ozlabs.org;\n envelope-from=linuxppc-dev+bounces-16907-incoming=patchwork.ozlabs.org@lists.ozlabs.org;\n receiver=patchwork.ozlabs.org)", "lists.ozlabs.org;\n arc=none smtp.remote-ip=\"2607:f8b0:4864:20::1349\"", "lists.ozlabs.org;\n dmarc=pass (p=reject dis=none) header.from=google.com", "lists.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256\n header.s=20230601 header.b=tpQ5T3tF;\n\tdkim-atps=neutral", "lists.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=flex--surenb.bounces.google.com\n (client-ip=2607:f8b0:4864:20::1349; helo=mail-dy1-x1349.google.com;\n envelope-from=3n5iuaqykda4685s1pu22uzs.q20zw18b33q-rs9zw676.2dzop6.25u@flex--surenb.bounces.google.com;\n receiver=lists.ozlabs.org)" ], "Received": [ "from lists.ozlabs.org (lists.ozlabs.org\n [IPv6:2404:9400:21b9:f100::1])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1 raw public key)\n server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fFlYm6v1Dz1xwF\n\tfor <incoming@patchwork.ozlabs.org>; Wed, 18 Feb 2026 03:33:00 +1100 (AEDT)", "from boromir.ozlabs.org (localhost [127.0.0.1])\n\tby lists.ozlabs.org (Postfix) with ESMTP id 4fFlYl3bNhz2yvy;\n\tWed, 18 Feb 2026 03:32:59 +1100 (AEDT)", "from mail-dy1-x1349.google.com (mail-dy1-x1349.google.com\n [IPv6:2607:f8b0:4864:20::1349])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n\t(No client certificate requested)\n\tby lists.ozlabs.org (Postfix) with ESMTPS id 4fFlYk4rNdz2xm3\n\tfor <linuxppc-dev@lists.ozlabs.org>; Wed, 18 Feb 2026 03:32:58 +1100 (AEDT)", "by mail-dy1-x1349.google.com with SMTP id\n 5a478bee46e88-2ba66faa692so5801038eec.1\n for <linuxppc-dev@lists.ozlabs.org>;\n Tue, 17 Feb 2026 08:32:58 -0800 (PST)" ], "ARC-Seal": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1771345979;\n\tcv=none;\n b=lfxYzWzUp46wuVEBAgc8OWypVdWnq0biXuZcqPnVnPi4gkEu8rvLUEtXfYXgbAmkbYrj2tcJtquM8zw/anNvFR+52xG554KNn27m6PxmJrhyOPtHXOONeKaRpXMga9RZDim/vM6DmI23Pgd//LPUxxwGfAU5T/l1gj+iQHGvRVqvFIDYlP1LFPqcb+TA1eHDAZC6I8KqYTxsT06MlN6AFBBEM5XaHDd8yLZYigpmEqCt9yNQaiKDpsNht+mQutupYq+AnJTQP4/m3st+Bkd9pO5rSz3iOxBhymyxSO6jpvjAgxoMOhtRjPhHm1Gdmm8ashxQsZfMrdsi33S99sP8fg==", "ARC-Message-Signature": "i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707;\n\tt=1771345979; c=relaxed/relaxed;\n\tbh=20E8AsSTFCwzOiRhIxVDRmNYTsZqkvgm04spnyQD6co=;\n\th=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From:\n\t To:Cc:Content-Type;\n b=fkJF1F1p2TpIfoXAjQ/vgGfKWkFHT/ReIQuOJmWtexXiBEAODGrlcypnmzJoZG1G6eFwhqsCSD6lhOrJSJbpDV5ERfVUwbFZZHa+fVQeLe47/dOOQDVNgW2DYfPKyN33nmDoNjgGWMpwrDknbWHr9qWxDXwSTUGuNiJtntaPzNlWYs2kriGxX/2sQLQfr8uAXQLTmC7nZwA1wC1ZLKk0KalP4BwtRVLBJ+D1tXG5rcQwKi2l5IRUbsTxLnxZwkaAOf+1OcraY3s/ytvOOUjzllviQkI3b2Q5wLv04xXCaqQHSZvT5hp2QQoTyzGrAYhX3jSYcXESWdTAqoLNCzPYFg==", "ARC-Authentication-Results": "i=1; lists.ozlabs.org;\n dmarc=pass (p=reject dis=none) header.from=google.com;\n dkim=pass (2048-bit key;\n unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256\n header.s=20230601 header.b=tpQ5T3tF; dkim-atps=neutral;\n spf=pass (client-ip=2607:f8b0:4864:20::1349; helo=mail-dy1-x1349.google.com;\n envelope-from=3n5iuaqykda4685s1pu22uzs.q20zw18b33q-rs9zw676.2dzop6.25u@flex--surenb.bounces.google.com;\n receiver=lists.ozlabs.org) smtp.mailfrom=flex--surenb.bounces.google.com", "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=google.com; s=20230601; t=1771345976; x=1771950776;\n darn=lists.ozlabs.org;\n h=cc:to:from:subject:message-id:references:mime-version:in-reply-to\n :date:from:to:cc:subject:date:message-id:reply-to;\n bh=20E8AsSTFCwzOiRhIxVDRmNYTsZqkvgm04spnyQD6co=;\n b=tpQ5T3tFuXIU/pq4209qwukudK0eHaFlJSUm85cs2hN4L3UH9RaJhUEOyr6sFBbMIy\n C9wTGVAV7zDm/o3VSFGJvpbbjjvHVLImmVzjWhXedCSGU65NEy/pifedk4WcGazxZfXc\n kZNux0CD9P+gMYwhsjIm5ec9zxahiO4JvYzc3NWJX7oN2wGO7IEmf9X9Emb2HIPN9nfV\n AxsK4d1iIgCRW0DWG9yIzcZ3r8VDLXlpnQSgrrCCN0dAGAmcqP3RanvQbwzs8y43bg68\n yljHQSpRs5yvtFN+/43ho0tTz9euN0f3QCO64Y9tG/Ynm8yL+2VuYmFOtmSW7b6tSkyH\n RQkw==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n d=1e100.net; s=20230601; t=1771345976; x=1771950776;\n h=cc:to:from:subject:message-id:references:mime-version:in-reply-to\n :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to;\n bh=20E8AsSTFCwzOiRhIxVDRmNYTsZqkvgm04spnyQD6co=;\n b=dPidNeKW0bXGctUoOvWAcByr2ESj4bablfpItDNQ7RnIy4zpYKnv9e2s2ukpBLPMnp\n r/jdhohMulGbQFs0u/lU5KQwG7Bdns1QPaA4fNVmWDObKRYe3UWRxa5eFWxASNaJNCI8\n XRh5STfVTGRPB8KCZCTa3ehNrPwqBlEuiAeLA9wJsCoca4MCgWbKo5eObznx+2IWO6iq\n +ZJ9JTObDVm4efkIMtDDzk6vZEzNhOtrvLUzYXJPdNUedF1AUbpGmsRaK2mJDR4h9a1b\n 31VGj4ptb4y1nSk6xh2IVqf4oobn1gWDUzlvkaZD7VrJGZ54Qsc8FrEs2VhUex6JDBFT\n OEOA==", "X-Forwarded-Encrypted": "i=1;\n AJvYcCWTjfHfMl4oB9VBabmwdvMGk/18CBg/ukP5E798G6I2RnUmQkihipAgL91g64OdjPAsgrXKTgoe8DcZ9H8=@lists.ozlabs.org", "X-Gm-Message-State": "AOJu0YyCEi63P41VdrAQERiX3Usny7B70WcAkVC3cmzQQKg5zpM+kSUW\n\tQhFBBVsWrXTUTbzsPsIIBYTn5WfCuBF1ZYL3Y8GR5rSZToFk5SIBhJeO7CQg1Zve8qUIoxWU+jZ\n\tDastXRQ==", "X-Received": "from dybmv5.prod.google.com\n ([2002:a05:7300:cd45:b0:2ba:9f53:8c70])\n (user=surenb job=prod-delivery.src-stubby-dispatcher) by\n 2002:a05:693c:2c8b:b0:2ba:7f8c:6754\n with SMTP id 5a478bee46e88-2bac97ceddbmr4300008eec.37.1771345975648; Tue, 17\n Feb 2026 08:32:55 -0800 (PST)", "Date": "Tue, 17 Feb 2026 08:32:48 -0800", "In-Reply-To": "<20260217163250.2326001-1-surenb@google.com>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "Mime-Version": "1.0", "References": "<20260217163250.2326001-1-surenb@google.com>", "X-Mailer": "git-send-email 2.53.0.273.g2a3d683680-goog", "Message-ID": "<20260217163250.2326001-2-surenb@google.com>", "Subject": "[PATCH v2 1/3] mm/vma: cleanup error handling path in vma_expand()", "From": "Suren Baghdasaryan <surenb@google.com>", "To": "akpm@linux-foundation.org", "Cc": "willy@infradead.org, david@kernel.org, ziy@nvidia.com,\n\tmatthew.brost@intel.com, joshua.hahnjy@gmail.com, rakie.kim@sk.com,\n\tbyungchul@sk.com, gourry@gourry.net, ying.huang@linux.alibaba.com,\n\tapopple@nvidia.com, lorenzo.stoakes@oracle.com,\n baolin.wang@linux.alibaba.com,\n\tLiam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com,\n\tdev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, vbabka@suse.cz,\n\tjannh@google.com, rppt@kernel.org, mhocko@suse.com, pfalcato@suse.de,\n\tkees@kernel.org, maddy@linux.ibm.com, npiggin@gmail.com, mpe@ellerman.id.au,\n\tchleroy@kernel.org, borntraeger@linux.ibm.com, frankja@linux.ibm.com,\n\timbrenda@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com,\n\tagordeev@linux.ibm.com, svens@linux.ibm.com, gerald.schaefer@linux.ibm.com,\n\tlinux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org,\n\tlinux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, surenb@google.com", "Content-Type": "text/plain; charset=\"UTF-8\"", "X-Spam-Status": "No, score=-7.6 required=3.0 tests=DKIMWL_WL_MED,DKIM_SIGNED,\n\tDKIM_VALID,DKIM_VALID_AU,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,\n\tUSER_IN_DEF_DKIM_WL autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "vma_expand() error handling is a bit confusing with \"if (ret) return ret;\"\nmixed with \"if (!ret && ...) ret = ...;\". Simplify the code to check\nfor errors and return immediately after an operation that might fail.\nThis also makes later changes to this function more readable.\n\nNo functional change intended.\n\nSuggested-by: Jann Horn <jannh@google.com>\nSigned-off-by: Suren Baghdasaryan <surenb@google.com>\n---\n mm/vma.c | 12 ++++++++----\n 1 file changed, 8 insertions(+), 4 deletions(-)", "diff": "diff --git a/mm/vma.c b/mm/vma.c\nindex be64f781a3aa..bb4d0326fecb 100644\n--- a/mm/vma.c\n+++ b/mm/vma.c\n@@ -1186,12 +1186,16 @@ int vma_expand(struct vma_merge_struct *vmg)\n \t * Note that, by convention, callers ignore OOM for this case, so\n \t * we don't need to account for vmg->give_up_on_mm here.\n \t */\n-\tif (remove_next)\n+\tif (remove_next) {\n \t\tret = dup_anon_vma(target, next, &anon_dup);\n-\tif (!ret && vmg->copied_from)\n+\t\tif (ret)\n+\t\t\treturn ret;\n+\t}\n+\tif (vmg->copied_from) {\n \t\tret = dup_anon_vma(target, vmg->copied_from, &anon_dup);\n-\tif (ret)\n-\t\treturn ret;\n+\t\tif (ret)\n+\t\t\treturn ret;\n+\t}\n \n \tif (remove_next) {\n \t\tvma_start_write(next);\n", "prefixes": [ "v2", "1/3" ] }