[PATCH] xfs_io: update bmap help text

[Eric Sandeen]

Trivial addition of missing argument help text.

Signed-off-by: Eric Sandeen <sandeen at sandeen.net>
---

iff --git a/io/bmap.c b/io/bmap.c
index f79cf8c..5c4cf48 100644
--- 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"));