261 static int ringbuf_map_mmap_kern(struct bpf_map *map, struct vm_area_struct *vma)  in ringbuf_map_mmap_kern()  argument
267 	if (vma->vm_flags & VM_WRITE) {  in ringbuf_map_mmap_kern()
269 		if (vma->vm_pgoff != 0 || vma->vm_end - vma->vm_start != PAGE_SIZE)  in ringbuf_map_mmap_kern()
272 		vm_flags_clear(vma, VM_MAYWRITE);  in ringbuf_map_mmap_kern()
275 	return remap_vmalloc_range(vma, rb_map->rb,  in ringbuf_map_mmap_kern()
276 				   vma->vm_pgoff + RINGBUF_PGOFF);  in ringbuf_map_mmap_kern()
279 static int ringbuf_map_mmap_user(struct bpf_map *map, struct vm_area_struct *vma)  in ringbuf_map_mmap_user()  argument
285 	if (vma->vm_flags & VM_WRITE) {  in ringbuf_map_mmap_user()
286 		if (vma->vm_pgoff == 0)  in ringbuf_map_mmap_user()
293 		vm_flags_clear(vma, VM_MAYWRITE);  in ringbuf_map_mmap_user()
296 	return remap_vmalloc_range(vma, rb_map->rb, vma->vm_pgoff + RINGBUF_PGOFF);  in ringbuf_map_mmap_user()