[RESEND PATCH v3 kernel 5/7] mm: add the related functions to get unused page

2016-10-20 Thread Liang Li
Save the unused page info into page bitmap. The virtio balloon driver call this new API to get the unused page bitmap and send the bitmap to hypervisor(QEMU) for speeding up live migration. During sending the bitmap, some the pages may be modified and are no free anymore, this inaccuracy can be cor

[PATCH v3 kernel 5/7] mm: add the related functions to get unused page

2016-08-07 Thread Liang Li
Save the unused page info into page bitmap. The virtio balloon driver call this new API to get the unused page bitmap and send the bitmap to hypervisor(QEMU) for speeding up live migration. During sending the bitmap, some the pages may be modified and are no free anymore, this inaccuracy can be cor