diff options
Diffstat (limited to 'fs/ext4/migrate.c')
| -rw-r--r-- | fs/ext4/migrate.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c index a4651894cc33..24c6ddafac99 100644 --- a/fs/ext4/migrate.c +++ b/fs/ext4/migrate.c @@ -481,6 +481,17 @@ int ext4_ext_migrate(struct inode *inode) ext4_journal_stop(handle); return retval; } + /* + * Use the correct seed for checksum (i.e. the seed from 'inode'). This + * is so that the metadata blocks will have the correct checksum after + * the migration. + * + * Note however that, if a crash occurs during the migration process, + * the recovery process is broken because the tmp_inode checksums will + * be wrong and the orphans cleanup will fail. + */ + ei = EXT4_I(inode); + EXT4_I(tmp_inode)->i_csum_seed = ei->i_csum_seed; i_size_write(tmp_inode, i_size_read(inode)); /* * Set the i_nlink to zero so it will be deleted later @@ -524,7 +535,6 @@ int ext4_ext_migrate(struct inode *inode) goto out; } - ei = EXT4_I(inode); i_data = ei->i_data; memset(&lb, 0, sizeof(lb)); |