tree 6438fc46013c2f5d60e78060c66e2809c6056f1a
parent cc8e94fd126ab2d2e4bcb1b65c7316196f0cec8c
author Darrick J. Wong <djwong@us.ibm.com> 1335739510 -0400
committer Theodore Ts'o <tytso@mit.edu> 1335739510 -0400

ext4: make block group checksums use metadata_csum algorithm

metadata_csum supersedes uninit_bg.  Convert the ROCOMPAT uninit_bg
flag check to a helper function that covers both, and make the
checksum calculation algorithm use either crc16 or the metadata_csum
chosen algorithm depending on which flag is set.  Print a warning if
we try to mount a filesystem with both feature flags set.

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