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#ifndef LINUX_IOMAP_H
#define LINUX_IOMAP_H 1
#include <linux/types.h>
/* types of block ranges for multipage write mappings. */
#define IOMAP_HOLE 0x01 /* no blocks allocated, need allocation */
#define IOMAP_DELALLOC 0x02 /* delayed allocation blocks */
#define IOMAP_MAPPED 0x03 /* blocks allocated @blkno */
#define IOMAP_UNWRITTEN 0x04 /* blocks allocated @blkno in unwritten state */
#define IOMAP_NULL_BLOCK -1LL /* blkno is not valid */
struct iomap {
sector_t blkno; /* first sector of mapping */
loff_t offset; /* file offset of mapping, bytes */
u64 length; /* length of mapping, bytes */
int type; /* type of mapping */
};
#endif /* LINUX_IOMAP_H */
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