linux-ext4 - [PATCH 2/2] docs: add new ext4 superblock time extension fields

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Date:   Thu, 26 Jul 2018 11:14:22 -0700
From:   "Darrick J. Wong" <darrick.wong@...cle.com>
To:     tytso@....edu, darrick.wong@...cle.com
Cc:     linux-ext4@...r.kernel.org
Subject: [PATCH 2/2] docs: add new ext4 superblock time extension fields

From: Darrick J. Wong <darrick.wong@...cle.com>

The superblock timestamp fields were enlarged by u8 to be 40 bits wide.
Update the documentation to reflect this.

Signed-off-by: Darrick J. Wong <darrick.wong@...cle.com>
---
 Documentation/filesystems/ext4/ondisk/super.rst |   32 ++++++++++++++++++++++-
 1 file changed, 30 insertions(+), 2 deletions(-)


diff --git a/Documentation/filesystems/ext4/ondisk/super.rst b/Documentation/filesystems/ext4/ondisk/super.rst
index 1f5ac9ab6f0c..5f81dd87e0b9 100644
--- a/Documentation/filesystems/ext4/ondisk/super.rst
+++ b/Documentation/filesystems/ext4/ondisk/super.rst
@@ -442,8 +442,36 @@ The ext4 superblock is laid out as follows in
      - Checksum seed used for metadata\_csum calculations. This value is
        crc32c(~0, $orig\_fs\_uuid).
    * - 0x274
-     - \_\_le32
-     - s\_reserved[98]
+     - \_\_u8
+     - 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.
    * - 0x3FC
      - \_\_le32