Document RWF_ODSYNC flag for pwritev2 as implemented by Christoph Hellwig.
Signed-off-by: Milosz Tanski <redacted>
---
man2/readv.2 | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/man2/readv.2 b/man2/readv.2
index 31b3870..ff1405c 100644
--- a/man2/readv.2
+++ b/man2/readv.2
@@ -203,6 +203,15 @@ contains a bitwise OR of one or more of the following flags:
.BR RWF_NONBLOCK " (only " preadv2() " since Linux 3.19)"
Performs a non-blocking operation for regular files (not sockets) opened in buffered mode (not
.BR O_DIRECT ")."
+.TP
+.BR RWF_DSYNC " (only " pwritev2() " since Linux 3.19)"
+Write operation will complete according to the requirements of synchronized I/O
+.I data
+integrity completion. This has the same effect on the operation as if the file handle was created by
+.BR open(2)
+with the
+.BR O_DSYNC
+flag.
.SH RETURN VALUE
On success,
@@ -333,6 +342,7 @@ nwritten = writev(STDOUT_FILENO, iov, 2);
.fi
.in
.SH SEE ALSO
+.BR open(2),
.BR pread (2),
.BR read (2),
.BR write (2)
--
1.9.1