From patchwork Sat Sep 3 03:01:50 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jason Yan X-Patchwork-Id: 1673801 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=ozlabs.org (client-ip=150.107.74.76; helo=gandalf.ozlabs.org; envelope-from=srs0=xmkz=zg=vger.kernel.org=linux-ext4-owner@ozlabs.org; receiver=) Received: from gandalf.ozlabs.org (gandalf.ozlabs.org [150.107.74.76]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4MKK6Z1FDVz1yhd for ; Sat, 3 Sep 2022 12:51:18 +1000 (AEST) Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4MKK6Z18nvz4xDK for ; Sat, 3 Sep 2022 12:51:18 +1000 (AEST) Received: by gandalf.ozlabs.org (Postfix) id 4MKK6Z16f6z4xG9; Sat, 3 Sep 2022 12:51:18 +1000 (AEST) Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: gandalf.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-ext4-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4MKK6Z13Jwz4xDK for ; Sat, 3 Sep 2022 12:51:18 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231535AbiICCvR (ORCPT ); Fri, 2 Sep 2022 22:51:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59888 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231524AbiICCvC (ORCPT ); Fri, 2 Sep 2022 22:51:02 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A286086C2C for ; Fri, 2 Sep 2022 19:50:58 -0700 (PDT) Received: from canpemm500004.china.huawei.com (unknown [172.30.72.57]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4MKK1t18LGz1N7jN; Sat, 3 Sep 2022 10:47:14 +0800 (CST) Received: from huawei.com (10.175.127.227) by canpemm500004.china.huawei.com (7.192.104.92) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Sat, 3 Sep 2022 10:50:56 +0800 From: Jason Yan To: , , , , , CC: Jason Yan Subject: [PATCH v2 07/13] ext4: factor out ext4_encoding_init() Date: Sat, 3 Sep 2022 11:01:50 +0800 Message-ID: <20220903030156.770313-8-yanaijie@huawei.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20220903030156.770313-1-yanaijie@huawei.com> References: <20220903030156.770313-1-yanaijie@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.127.227] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To canpemm500004.china.huawei.com (7.192.104.92) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org Factor out ext4_encoding_init(). No functional change. Signed-off-by: Jason Yan Reviewed-by: Jan Kara --- fs/ext4/super.c | 80 +++++++++++++++++++++++++++---------------------- 1 file changed, 44 insertions(+), 36 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index f8806226b796..67972b0218c0 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -4521,6 +4521,48 @@ static int ext4_inode_info_init(struct super_block *sb, return 0; } +static int ext4_encoding_init(struct super_block *sb, struct ext4_super_block *es) +{ +#if IS_ENABLED(CONFIG_UNICODE) + const struct ext4_sb_encodings *encoding_info; + struct unicode_map *encoding; + __u16 encoding_flags = le16_to_cpu(es->s_encoding_flags); + + if (!ext4_has_feature_casefold(sb) || sb->s_encoding) + return 0; + + encoding_info = ext4_sb_read_encoding(es); + if (!encoding_info) { + ext4_msg(sb, KERN_ERR, + "Encoding requested by superblock is unknown"); + return -EINVAL; + } + + encoding = utf8_load(encoding_info->version); + if (IS_ERR(encoding)) { + ext4_msg(sb, KERN_ERR, + "can't mount with superblock charset: %s-%u.%u.%u " + "not supported by the kernel. flags: 0x%x.", + encoding_info->name, + unicode_major(encoding_info->version), + unicode_minor(encoding_info->version), + unicode_rev(encoding_info->version), + encoding_flags); + return -EINVAL; + } + ext4_msg(sb, KERN_INFO,"Using encoding defined by superblock: " + "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, + unicode_major(encoding_info->version), + unicode_minor(encoding_info->version), + unicode_rev(encoding_info->version), + encoding_flags); + + sb->s_encoding = encoding; + sb->s_encoding_flags = encoding_flags; +#endif + return 0; +} + static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) { struct buffer_head *bh, **group_desc; @@ -4678,42 +4720,8 @@ static int __ext4_fill_super(struct fs_context *fc, struct super_block *sb) ext4_apply_options(fc, sb); -#if IS_ENABLED(CONFIG_UNICODE) - if (ext4_has_feature_casefold(sb) && !sb->s_encoding) { - const struct ext4_sb_encodings *encoding_info; - struct unicode_map *encoding; - __u16 encoding_flags = le16_to_cpu(es->s_encoding_flags); - - encoding_info = ext4_sb_read_encoding(es); - if (!encoding_info) { - ext4_msg(sb, KERN_ERR, - "Encoding requested by superblock is unknown"); - goto failed_mount; - } - - encoding = utf8_load(encoding_info->version); - if (IS_ERR(encoding)) { - ext4_msg(sb, KERN_ERR, - "can't mount with superblock charset: %s-%u.%u.%u " - "not supported by the kernel. flags: 0x%x.", - encoding_info->name, - unicode_major(encoding_info->version), - unicode_minor(encoding_info->version), - unicode_rev(encoding_info->version), - encoding_flags); - goto failed_mount; - } - ext4_msg(sb, KERN_INFO,"Using encoding defined by superblock: " - "%s-%u.%u.%u with flags 0x%hx", encoding_info->name, - unicode_major(encoding_info->version), - unicode_minor(encoding_info->version), - unicode_rev(encoding_info->version), - encoding_flags); - - sb->s_encoding = encoding; - sb->s_encoding_flags = encoding_flags; - } -#endif + if (ext4_encoding_init(sb, es)) + goto failed_mount; if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) { printk_once(KERN_WARNING "EXT4-fs: Warning: mounting with data=journal disables delayed allocation, dioread_nolock, O_DIRECT and fast_commit support!\n");