On Fri, May 02, 2025 at 03:56:08AM +0900, Damien Le Moal wrote: > > - unsigned long kaddr = (unsigned long)data; > > - unsigned long end = (kaddr + len + PAGE_SIZE - 1) >> PAGE_SHIFT; > > - unsigned long start = kaddr >> PAGE_SHIFT; > > - const int nr_pages = end - start; > > - bool is_vmalloc = is_vmalloc_addr(data); > > - struct page *page; > > - int offset, i; > > + unsigned int nr_vecs = bio_add_max_vecs(data, len); > > struct bio *bio; > > > > - bio = bio_kmalloc(nr_pages, gfp_mask); > > + bio = bio_kmalloc(nr_vecs, gfp_mask); > > This may also fail if nr_vecs is larger than UIO_MAXIOV, in which case, the > ENOMEM error may not really be appropriate. I guess we can sort this out > separately though. Yeah. It's also existing behavior, so no real change here.
