From patchwork Wed Sep 4 02:08:57 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gao Xiang X-Patchwork-Id: 11129141 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3FE401813 for ; Wed, 4 Sep 2019 02:10:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2B366233A1 for ; Wed, 4 Sep 2019 02:10:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727940AbfIDCK1 (ORCPT ); Tue, 3 Sep 2019 22:10:27 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:59850 "EHLO huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727884AbfIDCK0 (ORCPT ); Tue, 3 Sep 2019 22:10:26 -0400 Received: from DGGEMS411-HUB.china.huawei.com (unknown [172.30.72.60]) by Forcepoint Email with ESMTP id 745837A240A9C64E728E; Wed, 4 Sep 2019 10:10:25 +0800 (CST) Received: from architecture4.huawei.com (10.140.130.215) by smtp.huawei.com (10.3.19.211) with Microsoft SMTP Server (TLS) id 14.3.439.0; Wed, 4 Sep 2019 10:10:15 +0800 From: Gao Xiang To: Chao Yu , Greg Kroah-Hartman , Christoph Hellwig , CC: , , Chao Yu , Miao Xie , Gao Xiang Subject: [PATCH v2 10/25] erofs: update erofs_fs.h comments Date: Wed, 4 Sep 2019 10:08:57 +0800 Message-ID: <20190904020912.63925-11-gaoxiang25@huawei.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190904020912.63925-1-gaoxiang25@huawei.com> References: <20190901055130.30572-1-hsiangkao@aol.com> <20190904020912.63925-1-gaoxiang25@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.140.130.215] X-CFilter-Loop: Reflected Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org As Christoph said [1] [2], update it now. [1] https://lore.kernel.org/r/20190902124521.GA22153@infradead.org/ [2] https://lore.kernel.org/r/20190902120548.GB15931@infradead.org/ Reported-by: Christoph Hellwig Signed-off-by: Gao Xiang --- fs/erofs/erofs_fs.h | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index 18689e916e94..b1ee5654750d 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -1,5 +1,7 @@ /* SPDX-License-Identifier: GPL-2.0-only OR Apache-2.0 */ /* + * EROFS (Enhanced ROM File System) on-disk format definition + * * Copyright (C) 2017-2018 HUAWEI, Inc. * http://www.huawei.com/ * Created by Gao Xiang @@ -7,7 +9,6 @@ #ifndef __EROFS_FS_H #define __EROFS_FS_H -/* Enhanced(Extended) ROM File System */ #define EROFS_SUPER_OFFSET 1024 /* @@ -41,7 +42,7 @@ struct erofs_super_block { }; /* - * erofs inode datalayout: + * erofs inode datalayout (i_format in on-disk inode): * 0 - inode plain without inline data A: * inode, [xattrs], ... | ... | no-holed data * 1 - inode VLE compression B (legacy): @@ -187,7 +188,7 @@ static inline unsigned int erofs_xattr_entry_size(struct erofs_xattr_entry *e) e->e_name_len + le16_to_cpu(e->e_value_size)); } -/* available compression algorithm types */ +/* available compression algorithm types (for h_algorithmtype) */ enum { Z_EROFS_COMPRESSION_LZ4 = 0, Z_EROFS_COMPRESSION_MAX @@ -222,7 +223,7 @@ struct z_erofs_map_header { #define Z_EROFS_VLE_LEGACY_HEADER_PADDING 8 /* - * Z_EROFS Variable-sized Logical Extent cluster type: + * Fixed-sized output compression ondisk Logical Extent cluster type: * 0 - literal (uncompressed) cluster * 1 - compressed cluster (for the head logical cluster) * 2 - compressed cluster (for the other logical clusters)