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[2620:137:e000::1:20]) by mx.google.com with ESMTP id k63-20020a638442000000b003fcb9d205ecsi13133894pgd.200.2022.06.04.08.22.17; Sat, 04 Jun 2022 08:22:39 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=windriver.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236303AbiFBPAN (ORCPT + 99 others); Thu, 2 Jun 2022 11:00:13 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52130 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233126AbiFBPAL (ORCPT ); Thu, 2 Jun 2022 11:00:11 -0400 X-Greylist: delayed 629 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Thu, 02 Jun 2022 08:00:04 PDT Received: from mail1.wrs.com (unknown-3-146.windriver.com [147.11.3.146]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 973BF635C for ; Thu, 2 Jun 2022 08:00:04 -0700 (PDT) Received: from ala-exchng01.corp.ad.wrs.com (ala-exchng01.corp.ad.wrs.com [147.11.82.252]) by mail1.wrs.com (8.15.2/8.15.2) with ESMTPS id 252EnJEX009792 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 2 Jun 2022 07:49:25 -0700 Received: from otp-dpanait-l2.corp.ad.wrs.com (128.224.125.150) by ala-exchng01.corp.ad.wrs.com (147.11.82.252) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2242.12; Thu, 2 Jun 2022 07:49:19 -0700 From: Dragos-Marian Panait To: CC: Haimin Zhang , Chaitanya Kulkarni , Christoph Hellwig , Jens Axboe , , , Greg Kroah-Hartman Subject: [PATCH 4.19 1/1] block-map: add __GFP_ZERO flag for alloc_page in function bio_copy_kern Date: Thu, 2 Jun 2022 17:49:08 +0300 Message-ID: <20220602144908.2250166-2-dragos.panait@windriver.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220602144908.2250166-1-dragos.panait@windriver.com> References: <20220602144908.2250166-1-dragos.panait@windriver.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [128.224.125.150] X-ClientProxiedBy: ala-exchng01.corp.ad.wrs.com (147.11.82.252) To ala-exchng01.corp.ad.wrs.com (147.11.82.252) X-Spam-Status: No, score=-1.2 required=5.0 tests=BAYES_00,KHOP_HELO_FCRDNS, SPF_HELO_NONE,SPF_SOFTFAIL,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Haimin Zhang commit cc8f7fe1f5eab010191aa4570f27641876fa1267 upstream. Add __GFP_ZERO flag for alloc_page in function bio_copy_kern to initialize the buffer of a bio. Signed-off-by: Haimin Zhang Reviewed-by: Chaitanya Kulkarni Reviewed-by: Christoph Hellwig Link: https://lore.kernel.org/r/20220216084038.15635-1-tcs.kernel@gmail.com Signed-off-by: Jens Axboe [DP: Backported to 4.19: Manually added __GFP_ZERO flag] Signed-off-by: Dragos-Marian Panait --- block/bio.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/bio.c b/block/bio.c index fe749404ef93..7858b2d23916 100644 --- a/block/bio.c +++ b/block/bio.c @@ -1528,7 +1528,7 @@ struct bio *bio_copy_kern(struct request_queue *q, void *data, unsigned int len, if (bytes > len) bytes = len; - page = alloc_page(q->bounce_gfp | gfp_mask); + page = alloc_page(q->bounce_gfp | __GFP_ZERO | gfp_mask); if (!page) goto cleanup; -- 2.36.1