debugfs: manage needs_recover feature when messing with the journal

Set the needs_recover incompat feature when debugfs writes journal
transactions so that we actually replay the journal contents at the
next mount.

Likewise, clear it if we successfully recover the journal.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/debugfs/do_journal.c b/debugfs/do_journal.c
index 711ed27..a17af6e 100644
--- a/debugfs/do_journal.c
+++ b/debugfs/do_journal.c
@@ -158,6 +158,8 @@
 	trans->flags &= ~J_TRANS_OPEN;
 	trans->block++;
 
+	trans->fs->super->s_feature_incompat |= EXT3_FEATURE_INCOMPAT_RECOVER;
+	ext2fs_mark_super_dirty(trans->fs);
 error:
 	if (cbh)
 		brelse(cbh);
@@ -979,4 +981,9 @@
 	err = ext2fs_run_ext3_journal(&current_fs);
 	if (err)
 		com_err("journal_run", err, "while recovering journal");
+	else {
+		current_fs->super->s_feature_incompat &=
+				~EXT3_FEATURE_INCOMPAT_RECOVER;
+		ext2fs_mark_super_dirty(current_fs);
+	}
 }