[lib][fs] add a trace printf when unmounting
@@ -127,6 +127,8 @@ static struct fs_mount *find_mount(const char *path, const char **trimmed_path)
static void put_mount(struct fs_mount *mount) {
mutex_acquire(&mount_lock);
if ((--mount->ref) == 0) {
+ LTRACEF("last ref, unmounting fs at '%s'\n", mount->path);
+
list_delete(&mount->node);
mount->api->unmount(mount->cookie);
free(mount->path);
