On 18.03.22 10:55, Xiaoguang Wang wrote: > Module target_core_user will use it to implement zero copy feature. > > Signed-off-by: Xiaoguang Wang <xiaoguang.wang@xxxxxxxxxxxxxxxxx> > --- > mm/memory.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/mm/memory.c b/mm/memory.c > index 1f745e4d11c2..9974d0406dad 100644 > --- a/mm/memory.c > +++ b/mm/memory.c > @@ -1664,6 +1664,7 @@ void zap_page_range(struct vm_area_struct *vma, unsigned long start, > mmu_notifier_invalidate_range_end(&range); > tlb_finish_mmu(&tlb); > } > +EXPORT_SYMBOL_GPL(zap_page_range); > > /** > * zap_page_range_single - remove user pages in a given range To which VMAs will you be applying zap_page_range? I assume only to some special ones where you previously vm_insert_page(s)_mkspecial'ed pages, not to some otherwise random VMAs, correct? -- Thanks, David / dhildenb
