> diff --git a/mm/iov_iter.c b/mm/iov_iter.c
> index 827732047da1..be9a7c5b8703 100644
> --- a/mm/iov_iter.c
> +++ b/mm/iov_iter.c
> @@ -61,7 +61,7 @@
> __p = i->bvec; \
> __v.bv_len = min_t(size_t, n, __p->bv_len - skip); \
> if (likely(__v.bv_len)) { \
> - __v.bv_page = __p->bv_page; \
> + __v.bv_pfn = __p->bv_pfn; \
> __v.bv_offset = __p->bv_offset + skip; \
> (void)(STEP); \
> skip += __v.bv_len; \
> @@ -72,7 +72,7 @@
> __v.bv_len = min_t(size_t, n, __p->bv_len); \
> if (unlikely(!__v.bv_len)) \
> continue; \
> - __v.bv_page = __p->bv_page; \
> + __v.bv_pfn = __p->bv_pfn; \
> __v.bv_offset = __p->bv_offset; \
> (void)(STEP); \
> skip = __v.bv_len; \
> @@ -369,7 +369,7 @@ size_t copy_to_iter(void *addr, size_t bytes, struct
> iov_iter *i)
> iterate_and_advance(i, bytes, v,
> __copy_to_user(v.iov_base, (from += v.iov_len) - v.iov_len,
> v.iov_len),
> - memcpy_to_page(v.bv_page, v.bv_offset,
> + memcpy_to_page(bvec_page(&v), v.bv_offset,
How had memcpy_to_page(NULL, ...) worked for you?
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