e2fsck: leave room for checksum structure when salvaging a directory

When we're salvaging a directory, leave room at the end of the block
for the checksum entry so that e2fsck can write the checksummed dir
block out later.

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