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=-13.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 9C6F6C433E1 for ; Thu, 13 Aug 2020 06:34:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 684FE20715 for ; Thu, 13 Aug 2020 06:34:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726042AbgHMGeJ (ORCPT ); Thu, 13 Aug 2020 02:34:09 -0400 Received: from mx2.suse.de ([195.135.220.15]:55002 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725954AbgHMGeJ (ORCPT ); Thu, 13 Aug 2020 02:34:09 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 73AEBAD39 for ; Thu, 13 Aug 2020 06:34:30 +0000 (UTC) From: Qu Wenruo To: linux-btrfs@vger.kernel.org Subject: [PATCH] btrfs: cleanup how we calculate lockend in lock_and_cleanup_extent_if_need() Date: Thu, 13 Aug 2020 14:33:52 +0800 Message-Id: <20200813063352.94447-1-wqu@suse.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org We're just doing rounding up to sectorsize to calculate the lockend. There is no need to do the unnecessary length calculation, just direct round_up() is enough. Signed-off-by: Qu Wenruo --- fs/btrfs/file.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 2f96f083eb8c..c71ea9e5c529 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1475,9 +1475,7 @@ lock_and_cleanup_extent_if_need(struct btrfs_inode *inode, struct page **pages, int ret = 0; start_pos = round_down(pos, fs_info->sectorsize); - last_pos = start_pos - + round_up(pos + write_bytes - start_pos, - fs_info->sectorsize) - 1; + last_pos = round_up(pos + write_bytes, fs_info->sectorsize) - 1; if (start_pos < inode->vfs_inode.i_size) { struct btrfs_ordered_extent *ordered; -- 2.28.0