xfs_io: update bmap help text

Trivial addition of missing argument help text.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@infradead.org>

diff --git a/io/bmap.c b/io/bmap.c
index f79cf8cc4c4540346b83e3c5d307d083c90ac32e..55f956efeef06b50597ae1f7f0228f69102cfe2d 100644 (file)
--- a/io/bmap.c
+++ b/io/bmap.c
@@ -43,6 +43,9 @@ bmap_help(void)
 " -a -- prints the attribute fork map instead of the data fork.\n"
 " -d -- suppresses a DMAPI read event, offline portions shown as holes.\n"
 " -l -- also displays the length of each extent in 512-byte blocks.\n"
+" -n -- query n extents.\n"
+" -p -- obtain all unwritten extents as well (w/ -v show which are unwritten.)\n"
+" -v -- Verbose information, specify ag info.  Show flags legend on 2nd -v\n"
 " Note: the bmap for non-regular files can be obtained provided the file\n"
 " was opened appropriately (in particular, must be opened read-only).\n"
 "\n"));