Re: [PATCH v4] linux-aio: add IO_CMD_FDSYNC command support

[Stefan Hajnoczi <stefanha@redhat.com>]

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On Thu, Mar 14, 2024 at 04:46:28PM +0530, Prasad Pandit wrote:
> From: Prasad Pandit <pjp@fedoraproject.org>
> 
> Libaio defines IO_CMD_FDSYNC command to sync all outstanding
> asynchronous I/O operations, by flushing out file data to the
> disk storage.
> 
> Enable linux-aio to submit such aio request. This helps to
> reduce latency induced via pthread_create calls by
> thread-pool (aio=threads).
> 
> Signed-off-by: Prasad Pandit <pjp@fedoraproject.org>
> ---
>  block/file-posix.c      |  7 +++++++
>  block/linux-aio.c       | 21 ++++++++++++++++++++-
>  include/block/raw-aio.h |  1 +
>  3 files changed, 28 insertions(+), 1 deletion(-)
> 
> v4: New boolean field to indicate if aio_fdsync is available or not.
>     It is set at file open time and checked before AIO_FLUSH call.
>   - https://lists.nongnu.org/archive/html/qemu-devel/2024-03/msg03701.html

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

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