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| author | Jonathan Corbet <corbet@lwn.net> | 2016-12-27 12:53:44 -0700 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2016-12-27 12:53:44 -0700 |
| commit | 54ab6db0909061ab7ee07233d3cab86d29f86e6c (patch) | |
| tree | a7650ab5c0fa3a6a3841de8e8693041b3e009054 /include/linux/iomap.h | |
| parent | 217e2bfab22e740227df09f22165e834cddd8a3b (diff) | |
| parent | 7ce7d89f48834cefece7804d38fc5d85382edf77 (diff) | |
Merge tag 'v4.10-rc1' into docs-next
Linux 4.10-rc1
Diffstat (limited to 'include/linux/iomap.h')
| -rw-r--r-- | include/linux/iomap.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/iomap.h b/include/linux/iomap.h index 7892f55a1866..a4c94b86401e 100644 --- a/include/linux/iomap.h +++ b/include/linux/iomap.h @@ -49,6 +49,8 @@ struct iomap { #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 { /* @@ -82,4 +84,14 @@ int iomap_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf, 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 */ |