ext4: create nojournal_checksum mount option
authorDarrick J. Wong <darrick.wong@oracle.com>
Tue, 25 Nov 2014 21:20:50 +0000 (16:20 -0500)
committerTheodore Ts'o <tytso@mit.edu>
Tue, 25 Nov 2014 21:20:50 +0000 (16:20 -0500)
commitc6d3d56dd0ef6c15fc007413c9d024021c178cf9
tree928f042ae901be1de4813a8f898d054c47f00c98
parent58d86a50eee6f8d5a4768f739d10d94f9994180f
ext4: create nojournal_checksum mount option

Create a mount option to disable journal checksumming (because the
metadata_csum feature turns it on by default now), and fix remount not
to allow changing the journal checksumming option, since changing the
mount options has no effect on the journal.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
fs/ext4/super.c