[PATCH v2 2/6] xfs_repair: clear DIFLAG2_NREXT64 when filesystem doesn't support nrext64

["Darrick J. Wong" <djwong@kernel.org>]

From: Darrick J. Wong <djwong@kernel.org>

Clear the nrext64 inode flag if the filesystem doesn't have the nrext64
feature enabled in the superblock.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
---
v2: remove unnecessary clearing of extent counters, we reset them anyway
---
 repair/dinode.c |   13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/repair/dinode.c b/repair/dinode.c
index 00de31fb..7610cd45 100644
--- a/repair/dinode.c
+++ b/repair/dinode.c
@@ -2690,6 +2690,19 @@ _("bad (negative) size %" PRId64 " on inode %" PRIu64 "\n"),
 			}
 		}
 
+		if (xfs_dinode_has_large_extent_counts(dino) &&
+		    !xfs_has_large_extent_counts(mp)) {
+			if (!uncertain) {
+				do_warn(
+	_("inode %" PRIu64 " is marked large extent counts but file system does not support large extent counts\n"),
+					lino);
+			}
+			flags2 &= ~XFS_DIFLAG2_NREXT64;
+
+			if (!no_modify)
+				*dirty = 1;
+		}
+
 		if (!verify_mode && flags2 != be64_to_cpu(dino->di_flags2)) {
 			if (!no_modify) {
 				do_warn(_("fixing bad flags2.\n"));