[PATCH v2 3/3] io_submit.2: Document RWF_ATOMIC

[John Garry <john.g.garry@oracle.com>]

Document RWF_ATOMIC for asynchronous I/O.

Signed-off-by: John Garry <john.g.garry@oracle.com>
---
 man2/io_submit.2 | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/man2/io_submit.2 b/man2/io_submit.2
index c53ae9aaf..fb6c4d9bc 100644
--- a/man2/io_submit.2
+++ b/man2/io_submit.2
@@ -140,6 +140,23 @@ as well the description of
 .B O_SYNC
 in
 .BR open (2).
+.TP
+.BR RWF_ATOMIC " (since Linux 6.9)"
+Write a block of data such that a write will never be
+torn from power fail or similar. See the description
+of the flag of the same name in
+.BR pwritev2 (2).
+For usage with
+.BR IOCB_CMD_PWRITEV,
+the upper vector limit is in
+.I stx_atomic_write_segments_max.
+See
+.B STATX_WRITE_ATOMIC
+and
+.I stx_atomic_write_segments_max
+description
+in
+.BR statx (2).
 .RE
 .TP
 .I aio_lio_opcode
-- 
2.31.1