Re: [PATCH v4 3/3] io_submit.2: Document RWF_ATOMIC

Darrick J. Wong
2024-07-17T21:44:45Z

On Wed, Jul 17, 2024 at 09:36:19AM +0000, John Garry wrote:
> Document RWF_ATOMIC for asynchronous I/O.
>
> Signed-off-by: John Garry <john.g.garry@oracle.com>
> ---
> man/man2/io_submit.2 | 19 +++++++++++++++++++
> 1 file changed, 19 insertions(+)
>
> 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).

Sounds good to me!
Reviewed-by: Darrick J. Wong <djwong@kernel.org>

--D

> .RE
> .TP
> .I aio_lio_opcode
> --
> 2.31.1
>