--- a/fs/ext4/super.c	2018-07-11 16:27:46.890341960 +0300
+++ b/fs/ext4/super.c	2018-07-11 16:29:17.549061853 +0300
@@ -5403,6 +5403,8 @@ static int ext4_mark_dquot_dirty(struct
 	/* Are we journaling quotas? */
 	if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) ||
 	    sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
+		if (test_bit(DQ_MOD_B, &dquot->dq_flags))
+			return 0;
 		dquot_mark_dquot_dirty(dquot);
 		return ext4_write_dquot(dquot);
 	} else {