tune2fs: rewrite block group checksums when changing checksumming feature flags

When toggling the metadata_csum and uninit_bg feature flags, we should
rewrite the block groups with the desired checksum.

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