| #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 */ |