filefrag: Fix a core dump on sparc32 platforms with 8k file systems

On 32-bit platforms where the file system block size is 8k or greater,
the calculation bpib*bpib*bpib* will overflow a 32-bit calculation,
leading to a divide by zero error.  Fix this.

Thanks to Mikulas Patocka for pointing this out.

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