Within a folio/compound page, nth_page() is no longer required. Given that we call folio_test_partial_kmap()+kmap_local_page(), the code would already be problematic if the src_pages would span multiple folios.
So let's just assume that all src pages belong to a single folio/compound page and can be iterated ordinarily.
Cc: Jens Axboe axboe@kernel.dk Signed-off-by: David Hildenbrand david@redhat.com --- io_uring/zcrx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/io_uring/zcrx.c b/io_uring/zcrx.c index f29b2a4867516..107b2a1b31c1c 100644 --- a/io_uring/zcrx.c +++ b/io_uring/zcrx.c @@ -966,7 +966,7 @@ static ssize_t io_copy_page(struct page *dst_page, struct page *src_page, size_t n = len;
if (folio_test_partial_kmap(page_folio(src_page))) { - src_page = nth_page(src_page, src_offset / PAGE_SIZE); + src_page += src_offset / PAGE_SIZE; src_offset = offset_in_page(src_offset); n = min(PAGE_SIZE - src_offset, PAGE_SIZE - dst_offset); n = min(n, len);