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| author | Darrick J. Wong | 2012-04-30 00:23:10 +0200 |
|---|---|---|
| committer | Theodore Ts'o | 2012-04-30 00:23:10 +0200 |
| commit | e615391896064eb5a0c760d086b8e1c6ecfffeab (patch) | |
| tree | 1d05a5e925579bc444468d88eacca00d633b8286 /fs/ext4/namei.c | |
| parent | ext4: create a new BH_Verified flag to avoid unnecessary metadata validation (diff) | |
| download | kernel-qcow2-linux-e615391896064eb5a0c760d086b8e1c6ecfffeab.tar.gz kernel-qcow2-linux-e615391896064eb5a0c760d086b8e1c6ecfffeab.tar.xz kernel-qcow2-linux-e615391896064eb5a0c760d086b8e1c6ecfffeab.zip | |
ext4: change on-disk layout to support extended metadata checksumming
Define flags and change structure definitions to allow checksumming of
ext4 metadata.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/namei.c')
| -rw-r--r-- | fs/ext4/namei.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 349d7b3671c8..b58bd5c8ffe7 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -145,6 +145,14 @@ struct dx_map_entry u16 size; }; +/* + * This goes at the end of each htree block. + */ +struct dx_tail { + u32 dt_reserved; + __le32 dt_checksum; /* crc32c(uuid+inum+dirblock) */ +}; + static inline ext4_lblk_t dx_get_block(struct dx_entry *entry); static void dx_set_block(struct dx_entry *entry, ext4_lblk_t value); static inline unsigned dx_get_hash(struct dx_entry *entry); |