Messages in this thread | | | Subject | Re: [PATCH net-next V4 5/5] vhost: access vq metadata through kernel virtual address | From | Jason Wang <> | Date | Fri, 25 Jan 2019 17:24:16 +0800 |
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On 2019/1/25 上午11:03, Michael S. Tsirkin wrote: >> +/* Suppress the vma that needs writeback since we can not track dirty >> + * pages now. >> + */ >> +static bool vma_can_vmap(struct vm_area_struct *vma) >> +{ >> + return vma_is_anonymous(vma) || is_vm_hugetlb_page(vma) || >> + vma_is_shmem(vma); >> +} >> + > IIUC a second but anonymous memory needs writeback too, just to swap. > I'm not an MM person so I might be off.
Right, my fault, I mean the vma that needs dirty page tracking.
Thanks
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