diff --git a/kernel/lib_mapfree.c b/kernel/lib_mapfree.c
index f545a41e..ae8cfeb4 100644
--- a/kernel/lib_mapfree.c
+++ b/kernel/lib_mapfree.c
@@ -373,47 +373,21 @@ void mf_remove_dirty(struct mapfree_info *mf, struct dirty_info *di)
 }
 EXPORT_SYMBOL_GPL(mf_remove_dirty);
 
-void mf_get_dirty(struct mapfree_info *mf, loff_t *min, loff_t *max, int min_stage, int max_stage)
-{
-	struct list_head *tmp;
-
-	if (unlikely(!mf))
-	    goto done;
-
-	down_read(&mf->mf_mutex);
-	for (tmp = mf->mf_dirty_anchor.next; tmp != &mf->mf_dirty_anchor; tmp = tmp->next) {
-		struct dirty_info *di = container_of(tmp, struct dirty_info, dirty_head);
-		struct mref_object *mref = di->dirty_mref;
-		if (unlikely(!mref)) {
-			continue;
-		}
-		if (di->dirty_stage < min_stage || di->dirty_stage > max_stage) {
-			continue;
-		}
-		if (mref->ref_pos < *min) {
-			*min = mref->ref_pos;
-		}
-		if (mref->ref_pos + mref->ref_len > *max) {
-			*max = mref->ref_pos + mref->ref_len;
-		}
-	}
-	up_read(&mf->mf_mutex);
-done:;
-}
-EXPORT_SYMBOL_GPL(mf_get_dirty);
-
-void mf_get_any_dirty(const char *filename, loff_t *min, loff_t *max, int min_stage, int max_stage)
+loff_t mf_get_any_dirty(const char *filename, int stage)
 {
+	loff_t res = -1;
 	struct list_head *tmp;
 
 	down_read(&mapfree_mutex);
 	for (tmp = mapfree_list.next; tmp != &mapfree_list; tmp = tmp->next) {
 		struct mapfree_info *mf = container_of(tmp, struct mapfree_info, mf_head);
 		if (!strcmp(mf->mf_name, filename)) {
-			mf_get_dirty(mf, min, max, min_stage, max_stage);
+			res = mf_dirty_length(mf, stage);
+			break;
 		}
 	}
 	up_read(&mapfree_mutex);
+	return res;
 }
 EXPORT_SYMBOL_GPL(mf_get_any_dirty);
 
diff --git a/kernel/lib_mapfree.h b/kernel/lib_mapfree.h
index 06217a88..4002c6fc 100644
--- a/kernel/lib_mapfree.h
+++ b/kernel/lib_mapfree.h
@@ -99,8 +99,7 @@ loff_t mf_dirty_length(struct mapfree_info *mf, enum dirty_stage stage);
 
 void mf_insert_dirty(struct mapfree_info *mf, struct dirty_info *di);
 void mf_remove_dirty(struct mapfree_info *mf, struct dirty_info *di);
-void mf_get_dirty(struct mapfree_info *mf, loff_t *min, loff_t *max, int min_stage, int max_stage);
-void mf_get_any_dirty(const char *filename, loff_t *min, loff_t *max, int min_stage, int max_stage);
+loff_t mf_get_any_dirty(const char *filename, int stage);
 
 ////////////////// module init stuff /////////////////////////
 
diff --git a/kernel/sy_old/sy_generic.c b/kernel/sy_old/sy_generic.c
index 0a8ab37d..ec2e0a4a 100644
--- a/kernel/sy_old/sy_generic.c
+++ b/kernel/sy_old/sy_generic.c
@@ -1079,19 +1079,18 @@ int get_inode(char *newpath, struct mars_dent *dent)
 		}
 		path_put(&path);
 	} else if (S_ISREG(dent->new_stat.mode) && dent->d_name && !strncmp(dent->d_name, "log-", 4)) {
-		loff_t min = dent->new_stat.size;
-		loff_t max = 0;
+		loff_t min;
 
 		dent->d_corr_A = 0;
 		dent->d_corr_B = 0;
-		mf_get_any_dirty(newpath, &min, &max, 0, 2);
+		min = mf_get_any_dirty(newpath, DIRTY_COMPLETED);
 		if (min < dent->new_stat.size) {
-			MARS_DBG("file '%s' A size=%lld min=%lld max=%lld\n", newpath, dent->new_stat.size, min, max);
+			MARS_DBG("file '%s' A size=%lld min=%lld\n", newpath, dent->new_stat.size, min);
 			dent->d_corr_A = min;
 		}
-		mf_get_any_dirty(newpath, &min, &max, 0, 3);
+		min = mf_get_any_dirty(newpath, DIRTY_FINISHED);
 		if (min < dent->new_stat.size) {
-			MARS_DBG("file '%s' B size=%lld min=%lld max=%lld\n", newpath, dent->new_stat.size, min, max);
+			MARS_DBG("file '%s' B size=%lld min=%lld\n", newpath, dent->new_stat.size, min);
 			dent->d_corr_B = min;
 		}
 	}