btrfs-progs: btrfs-crc: improve usage message
authorSatoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Thu, 2 Jun 2016 08:13:10 +0000 (17:13 +0900)
committerDavid Sterba <dsterba@suse.com>
Fri, 3 Jun 2016 12:49:43 +0000 (14:49 +0200)
commitff6fe039d366ee5dee056c333a28a98e35598197
tree83fcbe562c7a3e1bb5fab14b53fde370bb69d3e2
parent9e4e17f361ead472018692a463cdf6ddefe8f67e
btrfs-progs: btrfs-crc: improve usage message

- If -c is set, filename argument is ignored.
- Describe about -h option

Signed-off-by: Satoru Takeuchi <takeuchi_satoru@jp.fujitsu.com>
Signed-off-by: David Sterba <dsterba@suse.com>
btrfs-crc.c