diff options
| -rw-r--r-- | lib/iov_iter.c | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/lib/iov_iter.c b/lib/iov_iter.c index 1c65de175371..72c5bb794e8d 100644 --- a/lib/iov_iter.c +++ b/lib/iov_iter.c @@ -1925,20 +1925,8 @@ int iov_iter_npages(const struct iov_iter *i, int maxpages) return min(npages, maxpages); } if (iov_iter_is_xarray(i)) { - size_t size = i->count; - unsigned offset; - int npages; - - offset = (i->xarray_start + i->iov_offset) & ~PAGE_MASK; - - npages = 1; - if (size > PAGE_SIZE - offset) { - size -= PAGE_SIZE - offset; - npages += size >> PAGE_SHIFT; - size &= ~PAGE_MASK; - if (size) - npages++; - } + unsigned offset = (i->xarray_start + i->iov_offset) % PAGE_SIZE; + int npages = DIV_ROUND_UP(offset + i->count, PAGE_SIZE); return min(npages, maxpages); } return 0; |