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ext4: update doc about journal superblock description

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Update the description in doc about the s_head parameter in the journal
superblock.

Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://lore.kernel.org/r/20230322013353.1843306-4-yi.zhang@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Zhang Yi 2023-03-22 09:33:53 +08:00 committed by Theodore Ts'o
parent 7294505824
commit bd5a594b5b
1 changed files with 6 additions and 1 deletions
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7
Documentation/filesystems/ext4/journal.rst
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@ -260,8 +260,13 @@ which is 1024 bytes long:
- s_num_fc_blocks
- Number of fast commit blocks in the journal.
* - 0x58
- __be32
- s_head
- Block number of the head (first unused block) of the journal, only
up-to-date when the journal is empty.
* - 0x5C
- __u32
- s_padding[42]
- s_padding[40]
-
* - 0xFC
- __be32