From patchwork Wed Nov 9 17:04:39 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Sterba X-Patchwork-Id: 9419817 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 44F07601C0 for ; Wed, 9 Nov 2016 17:04:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3291C28973 for ; Wed, 9 Nov 2016 17:04:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 277B929394; Wed, 9 Nov 2016 17:04:46 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DBBDC28973 for ; Wed, 9 Nov 2016 17:04:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754533AbcKIREn (ORCPT ); Wed, 9 Nov 2016 12:04:43 -0500 Received: from mx2.suse.de ([195.135.220.15]:51288 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754530AbcKIREm (ORCPT ); Wed, 9 Nov 2016 12:04:42 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay1.suse.de (charybdis-ext.suse.de [195.135.220.254]) by mx2.suse.de (Postfix) with ESMTP id E55A6ADB9 for ; Wed, 9 Nov 2016 17:04:40 +0000 (UTC) Received: by ds.suse.cz (Postfix, from userid 10065) id 25DFCDA8AA; Wed, 9 Nov 2016 18:04:39 +0100 (CET) From: David Sterba To: linux-btrfs@vger.kernel.org Cc: David Sterba Subject: [PATCH 10/12] btrfs: use specialized page copying helpers in btrfs_clone_extent_buffer Date: Wed, 9 Nov 2016 18:04:39 +0100 Message-Id: <412f7272c84e3bfd07f05b0cc8e31af68eabbabd.1478710770.git.dsterba@suse.com> X-Mailer: git-send-email 2.10.1 In-Reply-To: References: Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The copy_page is usually optimized and can be faster than memcpy. Signed-off-by: David Sterba --- fs/btrfs/extent_io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 45a986791fe0..0a71a85d103d 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -4720,9 +4720,9 @@ struct extent_buffer *btrfs_clone_extent_buffer(struct extent_buffer *src) WARN_ON(PageDirty(p)); SetPageUptodate(p); new->pages[i] = p; + copy_page(page_address(p), page_address(src->pages[i])); } - copy_extent_buffer(new, src, 0, 0, src->len); set_bit(EXTENT_BUFFER_UPTODATE, &new->bflags); set_bit(EXTENT_BUFFER_DUMMY, &new->bflags);