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authorMichael Kerrisk <mtk.manpages@gmail.com>2016-08-07 07:50:20 +1000
committerMichael Kerrisk <mtk.manpages@gmail.com>2016-09-04 16:46:49 +1200
commitdae86017d71750feee456b9c845bd15a98722caf (patch)
tree6a71ebb51c3d67f45c15fb6de200d857713947c9
parent5c3bbffbb0e53c5f1e68a7cc6befda4ff24453f3 (diff)
downloadman-pages-dae86017d71750feee456b9c845bd15a98722caf.tar.gz
readv.2: Document the pwritev2() RWF_SYNC and RWF_DSYNC flags
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
-rw-r--r--man2/readv.218
1 files changed, 18 insertions, 0 deletions
diff --git a/man2/readv.2 b/man2/readv.2
index 02e73558a4..3c987847e6 100644
--- a/man2/readv.2
+++ b/man2/readv.2
@@ -206,6 +206,15 @@ The
.I flags
argument contains a bitwise OR of zero or more of the following flags:
.TP
+.BR RWF_DSYNC " (since Linux 4.7)"
+Provide a per-write equivalent of the
+.B O_DSYNC
+.BR open (2)
+flag.
+This flag is meaningful only for
+.BR pwritev2 ().
+.\" commit e864f39569f4092c2b2bc72c773b6e486c7e3bd9
+.TP
.BR RWF_HIPRI " (since Linux 4.6)"
High priority read/write.
Allows block-based filesystems to use polling of the device,
@@ -213,6 +222,15 @@ which provides lower latency, but may use additional resources.
(Currently, this feature is usable only on a file descriptor opened using the
.BR O_DIRECT
flag.)
+.TP
+.BR RWF_SYNC " (since Linux 4.7)"
+Provide a per-write equivalent of the
+.B O_SYNC
+.BR open (2)
+flag.
+This flag is meaningful only for
+.BR pwritev2 ().
+.\" commit e864f39569f4092c2b2bc72c773b6e486c7e3bd9
.SH RETURN VALUE
On success,
.BR readv (),