fs: add RWF_DSYNC aand RWF_SYNC
This is the per-I/O equivalent of O_DSYNC and O_SYNC, and very useful for
all kinds of file servers and storage targets.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index a079d50..e21fe04 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -324,5 +324,7 @@
/* flags for preadv2/pwritev2: */
#define RWF_HIPRI 0x00000001 /* high priority request, poll if possible */
+#define RWF_DSYNC 0x00000002 /* per-IO O_DSYNC */
+#define RWF_SYNC 0x00000004 /* per-IO O_SYNC */
#endif /* _UAPI_LINUX_FS_H */