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...ber of free page blocks that can be obtained is limited to > + * the caller's array size. > + */ Please use: * Return: The number of free page blocks obtained from the free page list. Also, please include a * Context: Any context. or * Context: Process context. or whatever other conetext this function can be called from. Since you're taking the lock irqsafe, I assume this can be called from any context, but I wonder if it makes sense to have this function callable from interrupt context. Maybe this should be callable from process context only. > +uint32_t get_from_free_pa...

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_HINT, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_HINT, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's