When looking for the start of the hugefile range, the 'next' variable
is incorrectly decremented. If we happened to find a single free
block, the effect of this decrement is that blk == next, which means
that we never modify the loop control variable, so get_start_block
never returns.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>