#define IOMAP_F_NEW 0x01 /* blocks have been newly allocated */
#define IOMAP_F_DIRTY 0x02 /* uncommitted metadata */
#define IOMAP_F_BUFFER_HEAD 0x04 /* file system requires buffer heads */
+#define IOMAP_F_SIZE_CHANGED 0x08 /* file size has changed */
/*
* Flags that only need to be reported for IOMAP_REPORT requests: