e2freefrag: Fix to work correctly for file systems with 1kb block sizes

If the file system has a non-zero s_first_data_block, as is the case
when the block size is 1kb, e2freefrag would incorrectly try to
reference invalid data blocks in the block allocation bitmap.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
1 file changed