Re: [PATCH v5] linux-aio: add IO_CMD_FDSYNC command support

[Kevin Wolf]

Am 25.04.2024 um 09:04 hat Prasad Pandit geschrieben:
> 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.
> 
> When using aio=native without fdsync() support, QEMU creates
> pthreads, and destroying these pthreads results in TLB flushes.
> In a real-time guest environment, TLB flushes cause a latency
> spike. This patch helps to avoid such spikes.
> 
> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
> Signed-off-by: Prasad Pandit <pjp@fedoraproject.org>

Thanks, applied to the block branch.

Kevin