[PATCH v2 4/5] xfs_repair: zero shared_vn

["Darrick J. Wong" <darrick.wong@oracle.com>]

Since shared_vn always has to be zero, zero it at the end of repair.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
v2: reset shared_vn in phase 1 and tell the user about it, per sandeen
---
 repair/phase1.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/repair/phase1.c b/repair/phase1.c
index 126d0b3..ee5d3d7 100644
--- a/repair/phase1.c
+++ b/repair/phase1.c
@@ -138,6 +138,17 @@ _("Cannot disable lazy-counters on V5 fs\n"));
 		}
 	}
 
+	/* shared_vn should be zero */
+	if (sb->sb_shared_vn) {
+		if (!no_modify)  {
+			do_warn(_("resetting shared_vn to zero\n"));
+			sb->sb_shared_vn = 0;
+			primary_sb_modified = 1;
+		} else  {
+			do_warn(_("would reset shared_vn to zero\n"));
+		}
+	}
+
 	if (primary_sb_modified)  {
 		if (!no_modify)  {
 			do_warn(_("writing modified primary superblock\n"));