From: Darrick J. Wong <darrick.wong@oracle.com>
Date: Thu, 30 Oct 2014 14:53:16 +0000 (-0400)
Subject: ext4: disallow changing journal_csum option during remount
X-Git-Tag: omap-for-v3.19/fixes-not-urgent-part1~23^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6b992ff25658367089db4a82666e232b65d55eae;p=pandora-kernel.git

ext4: disallow changing journal_csum option during remount

ext4 does not permit changing the metadata or journal checksum feature
flag while mounted.  Until we decide to support that, don't allow a
remount to change the journal_csum flag (right now we silently fail to
change anything).

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
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