mke2fs: teach mke2fs to understand -b 4k and -C 256M

The -b and -C options now use parse_num_blocks2() instead of strtol,
so that users can specify -C 256M instead of the much less convenient
-C 268435456.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Reviewed-by: Zheng Liu <wenqing.lz@taobao.com>
1 file changed