diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/erofs/erofs_fs.h | 9 |
1 files 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 <gaoxiang25@huawei.com> @@ -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) |