Update for lzo support

[Btrfs-Progs][V2] Update for lzo support

- Add incompat flag, otherwise btrfs-progs will report error
  when operating on btrfs filesystems mounted with lzo option.

- Update man page.

- Allow to turn on lzo compression for defrag operation:

  # btrfs filesystem defragment -c[zlib, lzo] <file>

  Note: "-c zlib" will fail, because that's how getopt() works
  for optional arguments.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/btrfs.c b/btrfs.c
index 46314cf..1b4f403 100644
--- a/btrfs.c
+++ b/btrfs.c
@@ -65,7 +65,7 @@ static struct Command commands[] = {
 		"List the recently modified files in a filesystem."
 	},
 	{ do_defrag, -1,
-	  "filesystem defragment", "[-vcf] [-s start] [-l len] [-t size] <file>|<dir> [<file>|<dir>...]\n"
+	  "filesystem defragment", "[-vf] [-c[zlib,lzo]] [-s start] [-l len] [-t size] <file>|<dir> [<file>|<dir>...]\n"
 		"Defragment a file or a directory."
 	},
 	{ do_set_default_subvol, 2,