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For virtio-blk, when the backend is a regular file, the discard and is implemented by fallocate(), but this function will not wait for the discard command handled by disk. So, add fdatasync to make sure the DISCARD is executed synchronously. Tracked-On: #2395 Signed-off-by: Conghui Chen <conghui.chen@intel.com> Acked-by: Wang Yu <yu1.wang@intel.com>
ACRN Device Model ################# Introduction ============ The ACRN Device Model provides **device sharing** capabilities between the Service OS and Guest OSs. It is a component that is used in conjunction with the `ACRN Hypervisor`_ and this is installed within the Service OS. You can find out more about Project ACRN on the `Project ACRN documentation`_ website. .. _`ACRN Hypervisor`: https://github.com/projectacrn/acrn-hypervisor .. _`Project ACRN documentation`: https://projectacrn.github.io/