From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CDF40C4361B for ; Thu, 17 Dec 2020 04:59:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 788F62371F for ; Thu, 17 Dec 2020 04:59:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726711AbgLQE6g (ORCPT ); Wed, 16 Dec 2020 23:58:36 -0500 Received: from mx2.suse.de ([195.135.220.15]:56160 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726574AbgLQE6g (ORCPT ); Wed, 16 Dec 2020 23:58:36 -0500 X-Virus-Scanned: by amavisd-new at test-mx.suse.de DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1608181069; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=eqUH/zW/pYgc5y8gvC47cOLC+rhn4Ea3Y+Ct+jCG47I=; b=AsbrdhrFrakw4cquU0TDBS1tfHBdc5lyNcD8LZsvJ1Qo9pmnP62ThmsJcuNZkQOFsXOFp+ XJ9pM4cApXgY2usAM0g/0drlfAEq/frlkN5VYaNSk//1uC52xpWoHOfeybp+OS2VAgLrZ9 4MIEnwklfxZBZlyE0t7h+CVQQjDl+dk= Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id C8C37ACC6 for ; Thu, 17 Dec 2020 04:57:49 +0000 (UTC) From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH 1/4] btrfs: inode: use min() to replace open-code in btrfs_invalidatepage() Date: Thu, 17 Dec 2020 12:57:34 +0800 Message-Id: <20201217045737.48100-2-wqu@suse.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20201217045737.48100-1-wqu@suse.com> References: <20201217045737.48100-1-wqu@suse.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org In btrfs_invalidatepage() we introduce a temporary variable, new_len, to update ordered->truncated_len. But we can use min() to replace it completely and no need for the variable. Signed-off-by: Qu Wenruo --- fs/btrfs/inode.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index af3439b21bc4..dced71bccaac 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -8219,15 +8219,13 @@ static void btrfs_invalidatepage(struct page *page, unsigned int offset, */ if (TestClearPagePrivate2(page)) { struct btrfs_ordered_inode_tree *tree; - u64 new_len; tree = &inode->ordered_tree; spin_lock_irq(&tree->lock); set_bit(BTRFS_ORDERED_TRUNCATED, &ordered->flags); - new_len = start - ordered->file_offset; - if (new_len < ordered->truncated_len) - ordered->truncated_len = new_len; + ordered->truncated_len = min(ordered->truncated_len, + start - ordered->file_offset); spin_unlock_irq(&tree->lock); ASSERT(end - start + 1 < U32_MAX); -- 2.29.2