From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f41.google.com (mail-pj1-f41.google.com [209.85.216.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 31FEA3FD1 for ; Sun, 3 Oct 2021 11:41:41 +0000 (UTC) Received: by mail-pj1-f41.google.com with SMTP id pg10so9115641pjb.5 for ; Sun, 03 Oct 2021 04:41:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=/D8bXyu49DxBdYOqHuSui3s+tc6MfuSn1HC3CjVWP6g=; b=l3/+qZ+lxn3ZuJlc69ANU1xZBUFyjznJ/dhb5dnFZVdSQ6HSE+KfbSegxcLYg5Hclx yk+jTUbwXtdJ1i3Ta7MkC1dYj/VU422S7zXSRcLo47vfYzEWjmfB73PKT9C3TpDc6ule Czeo7Ee0CSGlfe0ghoqVFLiQmUHG4S7UEySK5SDhF2eHoenmBw36f60g6468/0yY9RTx wS2GbwToeD3CD4wtdyuoBnaDkPG33H5U/zNEVkll0EWIaRitIN3EHraSxCBbcH3KHtfd 7+E0ELX49iOjLVArhmmAAMLe7rqvDzS+L+E6KZCClR2wvU38LSby6Ht7kpKPtHI3AvM8 sX8Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=/D8bXyu49DxBdYOqHuSui3s+tc6MfuSn1HC3CjVWP6g=; b=MGV4pSgsoaoOx+jxtIgv8pSlsb2MMUB4llF/GTcxA8iFDq88OxWhnP6uqwo9sTlwhu ym4I/DeyGOsOyUH8NFOStPj25pQKJC9wiHbfHIEWLlfJYm7Qb7SsMSjkfKHsT1eAp1IJ H304yZPm8iGJ0ek/hIK67Fe7lwOViBTK/F6PeBDasUswE9tBbAtdl2R3pJ3vWkA060Ln RiDvdkRJ2QwvnnfejxISZIMMk9s/N2J7pM/nZmRNmtMywQC4/rTNHAFfxzZK/ZOG9+bu cF2QYh+jGKJhK1Mt10GKH8BHyiotgquLpSkPVFcfM/7RqhLW2a13tPiyHXvScNoVQt6/ /kNQ== X-Gm-Message-State: AOAM531zGm5IUAgLxPT9rydL5keoKPTHUCsmPpMIiQ53pnfCMd8PgPUe /eOQ2dmnRb8FSE//vj7c5YQpxsDuG/hNZhpzdA0= X-Google-Smtp-Source: ABdhPJzEXo5XpNXHFNgCL+WuGLFf0o5O5/LmEBJzprQr6lzDPqEAs4lqCoAZYlQZi2cIIC1OjnsqKw== X-Received: by 2002:a17:90b:1d84:: with SMTP id pf4mr8614263pjb.107.1633261300673; Sun, 03 Oct 2021 04:41:40 -0700 (PDT) Received: from ubuntu.localdomain ([171.224.177.7]) by smtp.gmail.com with ESMTPSA id d5sm10071574pjs.53.2021.10.03.04.41.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 03 Oct 2021 04:41:40 -0700 (PDT) From: Nghia Le To: mike.kravetz@oracle.com, akpm@linux-foundation.org, nathan@kernel.org, ndesaulniers@google.com Cc: Nghia Le , linux-mm@kvack.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, lukas.bulwahn@gmail.com, kernel-janitors@vger.kernel.org Subject: [PATCH] mm/hugetlb.c: remove dead store in demote_size_show() Date: Sun, 3 Oct 2021 18:41:13 +0700 Message-Id: <20211003114113.109463-1-nghialm78@gmail.com> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The command "make clang-analyzer" detected a dead store. Remove demote_size and corresponding assignment in function demote_size_show() to fix dead store, as demote_size is never read. Signed-off-by: Nghia Le --- mm/hugetlb.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 993efa70bce4..ef00e6ad0f6a 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3706,11 +3706,9 @@ static ssize_t demote_size_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf) { struct hstate *h; - unsigned long demote_size; int nid; h = kobj_to_hstate(kobj, &nid); - demote_size = h->demote_order; return sysfs_emit(buf, "%lukB\n", (unsigned long)(PAGE_SIZE << h->demote_order) / SZ_1K); -- 2.25.1