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-rw-r--r--Documentation/filesystems/ext4/super.rst20
1 files changed, 14 insertions, 6 deletions
diff --git a/Documentation/filesystems/ext4/super.rst b/Documentation/filesystems/ext4/super.rst
index 6eae92054827..93e55d7c1d40 100644
--- a/Documentation/filesystems/ext4/super.rst
+++ b/Documentation/filesystems/ext4/super.rst
@@ -58,7 +58,7 @@ The ext4 superblock is laid out as follows in
* - 0x1C
- \_\_le32
- s\_log\_cluster\_size
- - Cluster size is (2 ^ s\_log\_cluster\_size) blocks if bigalloc is
+ - Cluster size is 2 ^ (10 + s\_log\_cluster\_size) blocks if bigalloc is
enabled. Otherwise s\_log\_cluster\_size must equal s\_log\_block\_size.
* - 0x20
- \_\_le32
@@ -447,7 +447,7 @@ The ext4 superblock is laid out as follows in
- Upper 8 bits of the s_wtime field.
* - 0x275
- \_\_u8
- - s\_wtime_hi
+ - s\_mtime_hi
- Upper 8 bits of the s_mtime field.
* - 0x276
- \_\_u8
@@ -466,12 +466,20 @@ The ext4 superblock is laid out as follows in
- s\_last_error_time_hi
- Upper 8 bits of the s_last_error_time_hi field.
* - 0x27A
- - \_\_u8[2]
- - s\_pad
+ - \_\_u8
+ - s\_pad[2]
- Zero padding.
* - 0x27C
+ - \_\_le16
+ - s\_encoding
+ - Filename charset encoding.
+ * - 0x27E
+ - \_\_le16
+ - s\_encoding_flags
+ - Filename charset encoding flags.
+ * - 0x280
- \_\_le32
- - s\_reserved[96]
+ - s\_reserved[95]
- Padding to the end of the block.
* - 0x3FC
- \_\_le32
@@ -617,7 +625,7 @@ following:
* - 0x80
- Enable a filesystem size of 2^64 blocks (INCOMPAT\_64BIT).
* - 0x100
- - Multiple mount protection. Not implemented (INCOMPAT\_MMP).
+ - Multiple mount protection (INCOMPAT\_MMP).
* - 0x200
- Flexible block groups. See the earlier discussion of this feature
(INCOMPAT\_FLEX\_BG).