diff options
| author | Jeffle Xu <jefflexu@linux.alibaba.com> | 2022-05-12 13:56:01 +0800 |
|---|---|---|
| committer | Gao Xiang <hsiangkao@linux.alibaba.com> | 2022-05-18 00:11:21 +0800 |
| commit | ba73eadd23d1c2dc5c8dc0c0ae2eeca2b9b709a7 (patch) | |
| tree | 585ac83e0d9f37541cd2fd70d7170839ede5fce1 /fs/erofs/erofs_fs.h | |
| parent | d435d53228dd039fffecae123b8c138af6f96f99 (diff) | |
erofs: scan devices from device table
When "-o device" mount option is not specified, scan the device table
and instantiate the devices if there's any in the device table. In this
case, the tag field of each device slot uniquely specifies a device.
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220512055601.106109-1-jefflexu@linux.alibaba.com
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Diffstat (limited to 'fs/erofs/erofs_fs.h')
| -rw-r--r-- | fs/erofs/erofs_fs.h | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/fs/erofs/erofs_fs.h b/fs/erofs/erofs_fs.h index 20fc43c639ee..2b48373f690b 100644 --- a/fs/erofs/erofs_fs.h +++ b/fs/erofs/erofs_fs.h @@ -37,12 +37,9 @@ #define EROFS_SB_EXTSLOT_SIZE 16 struct erofs_deviceslot { - union { - u8 uuid[16]; /* used for device manager later */ - u8 userdata[64]; /* digest(sha256), etc. */ - } u; - __le32 blocks; /* total fs blocks of this device */ - __le32 mapped_blkaddr; /* map starting at mapped_blkaddr */ + u8 tag[64]; /* digest(sha256), etc. */ + __le32 blocks; /* total fs blocks of this device */ + __le32 mapped_blkaddr; /* map starting at mapped_blkaddr */ u8 reserved[56]; }; #define EROFS_DEVT_SLOT_SIZE sizeof(struct erofs_deviceslot) |