mufs: call flash_sync() after each flash_write()

source/mufs/tree.c

@@ -278,6 +278,7 @@ static size_t mufs_do_write(struct mufs_tree *tree,
 {
 	struct mufs *fs = tree->fs;
 	struct flash_dev *dev = fs->dev;
+	size_t ret;
 	uint32_t page, offset;
 
 	offset = va & ((UINT32_C(1) << dev->log2_block_size) - 1);
@@ -287,8 +288,16 @@ static size_t mufs_do_write(struct mufs_tree *tree,
 	if (mufs_alloc_page(tree, &page, va) < 0)
 		return 0;
 
-	return flash_write(dev, (page << dev->log2_block_size) + offset, data,
+	ret = flash_write(dev, (page << dev->log2_block_size) + offset, data,
 		len);
+
+	if (ret == 0)
+		return 0;
+
+	if (flash_sync(dev) < 0)
+		return 0;
+
+	return ret;
 }
 
 size_t mufs_tree_write(struct mufs_tree *tree, void *data,
@@ -326,5 +335,5 @@ int mufs_sync_tree(struct mufs_tree *tree)
 	if (flash_write(dev, tree->va, &dtree, sizeof dtree) == 0)
 		return -1;
 
-	return 0;
+	return flash_sync(dev);
 }