ext4: reflect mb_optimize_scan value in options file

[linux-2.6-microblaze.git] / fs / ext4 / super.c

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index a6d71a4..9e84a55 100644 (file)
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -3011,6 +3011,15 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
        } else if (test_opt2(sb, DAX_INODE)) {
                SEQ_OPTS_PUTS("dax=inode");
        }
+
+       if (sbi->s_groups_count >= MB_DEFAULT_LINEAR_SCAN_THRESHOLD &&
+                       !test_opt2(sb, MB_OPTIMIZE_SCAN)) {
+               SEQ_OPTS_PUTS("mb_optimize_scan=0");
+       } else if (sbi->s_groups_count < MB_DEFAULT_LINEAR_SCAN_THRESHOLD &&
+                       test_opt2(sb, MB_OPTIMIZE_SCAN)) {
+               SEQ_OPTS_PUTS("mb_optimize_scan=1");
+       }
+
        ext4_show_quota_options(seq, sb);
        return 0;
 }