[PATCH] xfs_db: add header to freesp -d output

[Eric Sandeen <sandeen@xxxxxxxxxx>]

Today, xfs_db's freesp -d command dumps out a bunch of numbers:

# xfs_db -c "freesp -d" /dev/sdb1
       0        4        1
       0        5        1
       0        6        1
       0        7        1
       0       12   174772
...

which are not useful to the non-code-reading user.
Add some headers:

# xfs_db -c "freesp -d" /dev/sdb1
    agno    agbno      len
       0        4        1
       0        5        1
       0        6        1
       0        7        1
       0       12   174772
...

so there's at least some context.

Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
---

p.s. - If folks want different strings, I'm game.

diff --git a/db/freesp.c b/db/freesp.c
index 6f69eba..361fa96 100644
--- a/db/freesp.c
+++ b/db/freesp.c
@@ -96,6 +96,10 @@ freesp_f(
 
        if (!init(argc, argv))
                return 0;
+
+       if (dumpflag)
+               dbprintf("%8s %8s %8s\n", "agno", "agbno", "len");
+
        for (agno = 0; agno < mp->m_sb.sb_agcount; agno++)  {
                if (inaglist(agno))
                        scan_ag(agno);