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24687abf23
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> Message-ID: <20240425070412.37248-1-ppandit@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>