diff mbox series

[v5,3/3] io_submit.2: Document RWF_ATOMIC

Message ID 20240722095723.597846-4-john.g.garry@oracle.com (mailing list archive)
State New
Headers show
Series man2: Document RWF_ATOMIC | expand

Commit Message

John Garry July 22, 2024, 9:57 a.m. UTC 
Document RWF_ATOMIC for asynchronous I/O.

Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: John Garry <john.g.garry@oracle.com>
---
 man/man2/io_submit.2 | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
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Patch

diff --git a/man/man2/io_submit.2 b/man/man2/io_submit.2
index c53ae9aaf..12b4a72d7 100644
--- a/man/man2/io_submit.2
+++ b/man/man2/io_submit.2
@@ -140,6 +140,25 @@  as well the description of
 .B O_SYNC
 in
 .BR open (2).
+.TP
+.BR RWF_ATOMIC " (since Linux 6.11)"
+Write a block of data such that a write will never be torn from power fail or
+similar.
+See the description of
+.B RWF_ATOMIC
+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