Received: by 2002:ad5:474a:0:0:0:0:0 with SMTP id i10csp629569imu; Fri, 4 Jan 2019 04:19:21 -0800 (PST) X-Google-Smtp-Source: ALg8bN5DLwxudjMOqaDlMYPcGEEv66F93mfRhUGk5wn1vKIzrbT1Bm6qGouWQcBlfQ2QArs7K77f X-Received: by 2002:a17:902:780c:: with SMTP id p12mr49528291pll.197.1546604361250; Fri, 04 Jan 2019 04:19:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1546604361; cv=none; d=google.com; s=arc-20160816; b=bDz6WfHX5QSktH1mFveWdJPwyiGbdmfxRcuUXlNQW42N9EGuHS/E4uvci8e5GvW3oP txSVfmEU8q4Wphwr0D19zHpXZ0ucf7mYPyTPYc8Ad/xh8E2hVyRjhu04tntkLi8ZHR5A uunsM4gm95QUX8mJjCRroUUf8ggVJooetIOEhiw1+y59Ht85KJYG1MzWKX/CfMtoRe75 avnkwFZFZQplUHmrV36kHhIlE39VVdSQSYoPwm1wmfyYET1glWoqwA+XFhzBBdGnlDO7 9FBeUjoGv7TAqRcUGveUExrEGTHXSIG+wlcKJpSpBANBug87ohWQZ+3nS/1iDMoIGKzx +d3w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :message-id:date:subject:cc:to:from; bh=iUZxxrvB7n/LRRqHVfMQPPEJ8ZzQXtXnLjGpJM61z5M=; b=cklyJFGhRDL9Ug0B9biowGhbNaRAjjvAgSOD739OUOeC1MOOB/ZkKvzpN3LTB3ctLj HF2vdDjuJO23f4+CJ0bxfFBbojd2OaAWUGezlR7YWbu6Q4fVKwxFqdWF6jU//Rhgy6/A BnYlfQ/R6qnnacMO2N3naKXUf6CyiEeWbL+UlHmffvPL5BX68LNq+PeCAP+kOmAJX/zg fQ585lBK+DUgPm5BHMNvG+EdLo3k9w3IBzDsWxyvA/lqMU+Sfjauff1BcN74aAW5Ozqv OBrHBAXQz1vItvxwyL6Yf6bzMHcosBOBpzPpXLTRYHl4dL7nQ1yfxE9yDY94MD1MV0FZ C8xw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q15si53546191pgm.420.2019.01.04.04.18.52; Fri, 04 Jan 2019 04:19:21 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727495AbfADKLD (ORCPT + 99 others); Fri, 4 Jan 2019 05:11:03 -0500 Received: from app2.whu.edu.cn ([202.114.64.89]:45670 "EHLO whu.edu.cn" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725984AbfADKLC (ORCPT ); Fri, 4 Jan 2019 05:11:02 -0500 Received: from localhost (unknown [114.255.3.133]) by email2 (Coremail) with SMTP id AgBjCgCXSHUiMS9cHdDMCQ--.51553S2; Fri, 04 Jan 2019 18:10:50 +0800 (CST) From: Peng Wang To: cl@linux.com, penberg@kernel.org, rientjes@google.com, iamjoonsoo.kim@lge.com, akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Peng Wang Subject: [PATCH] mm/slub.c: keep red_left_pad being zero without SLAB_RED_ZONE flag Date: Fri, 4 Jan 2019 18:09:41 +0800 Message-Id: <20190104100941.29872-1-rocking@whu.edu.cn> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: AgBjCgCXSHUiMS9cHdDMCQ--.51553S2 X-Coremail-Antispam: 1UD129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7v73 VFW2AGmfu7bjvjm3AaLaJ3UjIYCTnIWjp_UUUY57AC8VAFwI0_Gr0_Xr1l1xkIjI8I6I8E 6xAIw20EY4v20xvaj40_Wr0E3s1l1IIY67AEw4v_Jr0_Jr4l8cAvFVAK0II2c7xJM28Cjx kF64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVW7JVWDJwA2z4x0Y4vE2Ix0cI8I cVCY1x0267AKxVWxJVW8Jr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2js IEc7CjxVAFwI0_GcCE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE 5I8CrVC2j2WlYx0E2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeV CFs4IE7xkEbVWUJVW8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1l c2xSY4AK67AK6r4DMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I 0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWU tVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcV CY1x0267AKxVWUJVW8JwCI42IY6xAIw20EY4v20xvaj40_WFyUJVCq3wCI42IY6I8E87Iv 67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r1j6r4UYxBIdaVFxhVjvjDU0xZFpf 9x0JUd-B_UUUUU= X-CM-SenderInfo: qsqrijaqrviiqqxyq4lkxovvfxof0/ Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org It seems more clear for red_left_pad to be zero despite not being used without SLAB_RED_ZONE flag. Signed-off-by: Peng Wang --- mm/slub.c | 1 + 1 file changed, 1 insertion(+) diff --git a/mm/slub.c b/mm/slub.c index 36c0befeebd8..9d16ca30bc2a 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -3603,6 +3603,7 @@ static int kmem_cache_open(struct kmem_cache *s, slab_flags_t flags) if (get_order(s->size) > get_order(s->object_size)) { s->flags &= ~DEBUG_METADATA_FLAGS; s->offset = 0; + s->red_left_pad = 0; if (!calculate_sizes(s, -1)) goto error; } -- 2.19.1