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[23.128.96.18]) by mx.google.com with ESMTP id kx4si9750890ejc.636.2021.02.07.11.08.13; Sun, 07 Feb 2021 11:08:36 -0800 (PST) Received-SPF: pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=fail header.i=@wdc.com header.s=dkim.wdc.com header.b=fhUegeXt; spf=pass (google.com: domain of linux-ext4-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-ext4-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=wdc.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229704AbhBGTGn (ORCPT + 99 others); Sun, 7 Feb 2021 14:06:43 -0500 Received: from esa2.hgst.iphmx.com ([68.232.143.124]:39615 "EHLO esa2.hgst.iphmx.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229537AbhBGTGm (ORCPT ); Sun, 7 Feb 2021 14:06:42 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=wdc.com; i=@wdc.com; q=dns/txt; s=dkim.wdc.com; t=1612725713; x=1644261713; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jVyWOzZt5w5fhEh8o7eS7+fG7L6zzNjoN92UbyfAIKQ=; b=fhUegeXtCpCNxvIC8FtU8wtCza+kfj12ia8ymkJsEj2UTsW9gf2D3bby qAEAoY11FWTmI+FQX1XYkggTrldZiG1/HVSrBHzdcDvcddL7uXul1CUYB 64IDjJ3JalzLDv70CTs14u7/jwjVO/+F9dcb9MmSnUblYox6qzuD+irN9 6bLPK1MtnVkVg3q9yTV6wIXN4SDruVzAs50lil1ijq9gtnCB3be7OYyHr BxAZWgS7UI1xRyjd673qVtvqNQRZuRM355D8tnKXRQmTgsj1Zi/m9IiJT udNiXSY2Dd5EZwK5OUiQQpAJYTe9mp66lipxWFYI5/Ydwa1eOnRFXsD5J g==; IronPort-SDR: Sk5TaCaqaQzsBdbSxIlgsIaZ/fcWfd5NbQtzzlkEDThnpWNk9FS5fL5ny/2mv1OBzh8z+Iuezi UJLTP3fVyZMxO5J8A7kZeNs4xdC6I/ars6AKZKc7q4smZ+zf5GEZSt7PiABzLv3O3ZNJz2BqXx R1IUooK6vV3vDsslgwrr/xrMO4oMz+RporrOB9Pdw+bOipGnSXXioZv9OQOQg9AB+yBP1Rg9uA ffKPxPm+6Y0tH+Nik+b5CbUFYnPtlrJnwIeLad2pydmr5KaOoO3HUO4QXBYaJaOEn40TIFo2D2 gSw= X-IronPort-AV: E=Sophos;i="5.81,160,1610380800"; d="scan'208";a="263497363" Received: from h199-255-45-15.hgst.com (HELO uls-op-cesaep02.wdc.com) ([199.255.45.15]) by ob1.hgst.iphmx.com with ESMTP; 08 Feb 2021 03:19:03 +0800 IronPort-SDR: O5pRkm4GtNflkibKekCTYFizVIhtbNVMn2NS3MtjCA/9sMie1pW1OtGvX9ZotQkIb4mGt1iTXB 5sml7Lfs7ydPM9eAgMQ+KQ6Q1pTr4NrVIW/+pUY/j0/FgMVFsRdW1f4VayGixDQLqpWK3Qa9co JM2UR09xzssrQyzdcEUWkMmkopSOEzhzbuJ5onUilkXycbilZND6tn59A9BrvBfDFwf1C78jv2 FPsjQRKJdkVOBC3HrT1JeE/LL6Leh2g26MtbuOb5aiMqXcvSaJhQ+tqOYWYmPp1NjkD0cl+86g 00uzcO1hWoxmaYbiVsKK8nbL Received: from uls-op-cesaip02.wdc.com ([10.248.3.37]) by uls-op-cesaep02.wdc.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 07 Feb 2021 10:46:44 -0800 IronPort-SDR: kbuKIeO0AI9DEI+MIQQ6CERcLJnA/EyVGmtMpQ8f1jguskefPUd+f/2FtXU9VCEEsfvZoymzjR Nz9W5KtndcUDtWjZFQc7XM7vAsahBOcCZfV0oKzAfYlSOYyNK42W5Y8zjeMh6yHosSJBJfsVDk Kz/m/KtvRXAkvLuXXc8iKui771YFkmjT5p2omMAQY5MvQDwVKZwmINqJBiIGWIClOHouEqXGIA 5BFwvE6EyBVjXHK4MNwakyTD988bwcqPTepzRYwxBiNZ8RfhnV32rS5saUPih3CdycmFvOw7Z+ q8A= WDCIronportException: Internal Received: from vm.labspan.wdc.com (HELO vm.sc.wdc.com) ([10.6.137.102]) by uls-op-cesaip02.wdc.com with ESMTP; 07 Feb 2021 11:04:49 -0800 From: Chaitanya Kulkarni To: linux-block@vger.kernel.org, linux-ext4@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-fsdevel@vger.kernel.org Cc: axboe@kernel.dk, tytso@mit.edu, adilger.kernel@dilger.ca, jaegeuk@kernel.org, chao@kernel.org, johannes.thumshirn@wdc.com, damien.lemoal@wdc.com, bvanassche@acm.org, chaitanya.kulkarni@wdc.com, dongli.zhang@oracle.com, clm@fb.com, ira.weiny@intel.com, dsterba@suse.com, ebiggers@kernel.org, hch@infradead.org, dave.hansen@intel.com Subject: [RFC PATCH 2/8] brd: use memcpy_from_page() in copy_from_brd() Date: Sun, 7 Feb 2021 11:04:19 -0800 Message-Id: <20210207190425.38107-3-chaitanya.kulkarni@wdc.com> X-Mailer: git-send-email 2.22.1 In-Reply-To: <20210207190425.38107-1-chaitanya.kulkarni@wdc.com> References: <20210207190425.38107-1-chaitanya.kulkarni@wdc.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Signed-off-by: Chaitanya Kulkarni --- drivers/block/brd.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/block/brd.c b/drivers/block/brd.c index d41b7d489e9f..c1f6d768a1b3 100644 --- a/drivers/block/brd.c +++ b/drivers/block/brd.c @@ -220,7 +220,6 @@ static void copy_from_brd(void *dst, struct brd_device *brd, sector_t sector, size_t n) { struct page *page; - void *src; unsigned int offset = (sector & (PAGE_SECTORS-1)) << SECTOR_SHIFT; size_t copy; @@ -236,11 +235,9 @@ static void copy_from_brd(void *dst, struct brd_device *brd, sector += copy >> SECTOR_SHIFT; copy = n - copy; page = brd_lookup_page(brd, sector); - if (page) { - src = kmap_atomic(page); - memcpy(dst, src, copy); - kunmap_atomic(src); - } else + if (page) + memcpy_from_page(dst, page, offset, copy); + else memset(dst, 0, copy); } } -- 2.22.1