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=-16.8 required=3.0 tests=BAYES_00, 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 8B685C433F5 for ; Sat, 4 Sep 2021 04:39:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 628ED61056 for ; Sat, 4 Sep 2021 04:39:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231470AbhIDEkr (ORCPT ); Sat, 4 Sep 2021 00:40:47 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:15287 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229918AbhIDEko (ORCPT ); Sat, 4 Sep 2021 00:40:44 -0400 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.55]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4H1hl802Ryz8snj; Sat, 4 Sep 2021 12:39:16 +0800 (CST) Received: from dggema766-chm.china.huawei.com (10.1.198.208) by dggemv703-chm.china.huawei.com (10.3.19.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Sat, 4 Sep 2021 12:39:41 +0800 Received: from localhost.localdomain (10.175.127.227) by dggema766-chm.china.huawei.com (10.1.198.208) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.8; Sat, 4 Sep 2021 12:39:40 +0800 From: yangerkun To: , CC: , , Subject: [PATCH 1/2] ext4: avoid recheck extent for EXT4_EX_FORCE_CACHE Date: Sat, 4 Sep 2021 12:49:45 +0800 Message-ID: <20210904044946.2102404-2-yangerkun@huawei.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210904044946.2102404-1-yangerkun@huawei.com> References: <20210904044946.2102404-1-yangerkun@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggema766-chm.china.huawei.com (10.1.198.208) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Buffer with verified means that it has been checked before. No need verify and call set_buffer_verified again. Signed-off-by: yangerkun --- fs/ext4/extents.c | 17 ++++++++++------- 1 file changed, 10 insertions(+), 7 deletions(-) diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c index cbf37b2cf871..8559e288472f 100644 --- a/fs/ext4/extents.c +++ b/fs/ext4/extents.c @@ -505,13 +505,16 @@ __read_extent_tree_block(const char *function, unsigned int line, if (err < 0) goto errout; } - if (buffer_verified(bh) && !(flags & EXT4_EX_FORCE_CACHE)) - return bh; - err = __ext4_ext_check(function, line, inode, - ext_block_hdr(bh), depth, pblk); - if (err) - goto errout; - set_buffer_verified(bh); + if (buffer_verified(bh)) { + if (!(flags & EXT4_EX_FORCE_CACHE)) + return bh; + } else { + err = __ext4_ext_check(function, line, inode, + ext_block_hdr(bh), depth, pblk); + if (err) + goto errout; + set_buffer_verified(bh); + } /* * If this is a leaf block, cache all of its entries */ -- 2.31.1