#define IOMAP_WRITE (1 << 0) /* writing, must allocate blocks */
#define IOMAP_ZERO (1 << 1) /* zeroing operation, may skip holes */
#define IOMAP_REPORT (1 << 2) /* report extent status, e.g. FIEMAP */
+#define IOMAP_FAULT (1 << 3) /* mapping for page fault */
+#define IOMAP_DIRECT (1 << 4) /* direct I/O */
struct iomap_ops {
/*
int iomap_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
loff_t start, loff_t len, struct iomap_ops *ops);
+/*
+ * Flags for direct I/O ->end_io:
+ */
+#define IOMAP_DIO_UNWRITTEN (1 << 0) /* covers unwritten extent(s) */
+#define IOMAP_DIO_COW (1 << 1) /* covers COW extent(s) */
+typedef int (iomap_dio_end_io_t)(struct kiocb *iocb, ssize_t ret,
+ unsigned flags);
+ssize_t iomap_dio_rw(struct kiocb *iocb, struct iov_iter *iter,
+ struct iomap_ops *ops, iomap_dio_end_io_t end_io);
+
#endif /* LINUX_IOMAP_H */