From: Darrick J. Wong <djwong@us.ibm.com>
Date: Sun, 29 Apr 2012 22:45:10 +0000 (-0400)
Subject: ext4: make block group checksums use metadata_csum algorithm
X-Git-Tag: v3.5-rc1~16^2~31
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=feb0ab32a57e4e6c8b24f6fb68f0ce08efe4603c;p=pandora-kernel.git

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>
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