add detailed help messages to btrfs command
authorHubert Kario <kario@wit.edu.pl>
Sun, 23 Jan 2011 12:42:43 +0000 (13:42 +0100)
committerChris Mason <chris.mason@oracle.com>
Tue, 25 Oct 2011 13:18:32 +0000 (09:18 -0400)
commit29e6fc2aa637956ae57c5bf70208dea12e5b78cb
treef01fa2ff991eaf2eaf225695610c8a89f120e8e7
parentd388a77636ad7bfcccd50840fc8d0bc098ba08f3
add detailed help messages to btrfs command

extend the

        btrfs <cmd> --help

command to print detailed help message if available but fallback to
basic help message if detailed is unavailable

add detailed help message for 'filesystem defragment' command

little tweaks in comments

Signed-off-by: Hubert Kario <kario@wit.edu.pl>
Signed-off-by: Hugo Mills <hugo@carfax.org.uk>
btrfs.c