Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: > But given that all calls for the same iter type return the same > cleanup_mode by defintion I'm not even sure we need any of this > debug checking, and might as well just do: > > if (cleanup_mode & FOLL_GET) > bio_set_flag(bio, BIO_PAGE_REFFED); > else if (cleanup_mode & FOLL_PIN) > bio_set_flag(bio, BIO_PAGE_PINNED); That's kind of what I'm doing - though I've left out the else just in case the VM decides to indicate back both FOLL_GET and FOLL_PIN. I'm not sure why it would but... David