On 06/13/2017 10:56 AM, Michael S. Tsirkin wrote: >> +/* The size of one page_bmap used to record inflated/deflated pages. */ >> +#define VIRTIO_BALLOON_PAGE_BMAP_SIZE (8 * PAGE_SIZE) > At this size, you probably want alloc_pages to avoid kmalloc > overhead.
For slub, at least, kmalloc() just calls alloc_pages() basically directly. There's virtually no overhead.
