static int pin_rcv_pages(struct hfi1_filedata *fd, struct tid_user_buf *tidbuf)
{
int pinned;
- unsigned int npages;
+ unsigned int npages = tidbuf->npages;
unsigned long vaddr = tidbuf->vaddr;
struct page **pages = NULL;
struct hfi1_devdata *dd = fd->uctxt->dd;
- /* Get the number of pages the user buffer spans */
- npages = num_user_pages(vaddr, tidbuf->length);
- if (!npages)
- return -EINVAL;
-
if (npages > fd->uctxt->expected_count) {
dd_dev_err(dd, "Expected buffer too big\n");
return -EINVAL;
return pinned;
}
tidbuf->pages = pages;
- tidbuf->npages = npages;
fd->tid_n_pinned += pinned;
return pinned;
}
tidbuf->vaddr = tinfo->vaddr;
tidbuf->length = tinfo->length;
+ tidbuf->npages = num_user_pages(tidbuf->vaddr, tidbuf->length);
tidbuf->psets = kcalloc(uctxt->expected_count, sizeof(*tidbuf->psets),
GFP_KERNEL);
if (!tidbuf->psets) {