提交 f5cb282d 编写于 作者: D Darrick J. Wong 提交者: Theodore Ts'o

docs: add new ext4 superblock time extension fields

The superblock timestamp fields were enlarged by u8 to be 40 bits wide.
Update the documentation to reflect this.
Signed-off-by: NDarrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: NTheodore Ts'o <tytso@mit.edu>
上级 6684874a
...@@ -442,8 +442,36 @@ The ext4 superblock is laid out as follows in ...@@ -442,8 +442,36 @@ The ext4 superblock is laid out as follows in
- Checksum seed used for metadata\_csum calculations. This value is - Checksum seed used for metadata\_csum calculations. This value is
crc32c(~0, $orig\_fs\_uuid). crc32c(~0, $orig\_fs\_uuid).
* - 0x274 * - 0x274
- \_\_le32 - \_\_u8
- s\_reserved[98] - s\_wtime_hi
- Upper 8 bits of the s_wtime field.
* - 0x275
- \_\_u8
- s\_wtime_hi
- Upper 8 bits of the s_mtime field.
* - 0x276
- \_\_u8
- s\_mkfs_time_hi
- Upper 8 bits of the s_mkfs_time field.
* - 0x277
- \_\_u8
- s\_lastcheck_hi
- Upper 8 bits of the s_lastcheck_hi field.
* - 0x278
- \_\_u8
- s\_first_error_time_hi
- Upper 8 bits of the s_first_error_time_hi field.
* - 0x279
- \_\_u8
- s\_last_error_time_hi
- Upper 8 bits of the s_last_error_time_hi field.
* - 0x27A
- \_\_u8[2]
- s\_pad
- Zero padding.
* - 0x27C
- \_\_le32
- s\_reserved[96]
- Padding to the end of the block. - Padding to the end of the block.
* - 0x3FC * - 0x3FC
- \_\_le32 - \_\_le32
......
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