mke2fs: record the checksum algorithm in use in the superblock

Record the type of checksum algorithm we're using for metadata in the
superblock when creating a filesystem.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>

diff --git a/misc/mke2fs.c b/misc/mke2fs.c
index d1d8156..06216b1 100644 (file)
--- a/misc/mke2fs.c
+++ b/misc/mke2fs.c
@@ -2427,6 +2427,10 @@ int main (int argc, char *argv[])
                        sizeof(fs->super->s_last_mounted));
        }
 
+       if (EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
+                                      EXT4_FEATURE_RO_COMPAT_METADATA_CSUM))
+               fs->super->s_checksum_type = EXT2_CRC32C_CHKSUM;
+
        if (!quiet || noaction)
                show_stats(fs);