last = (snd_buf->page_base + snd_buf->page_len - 1) >> PAGE_SHIFT;
rqstp->rq_enc_pages_num = last - first + 1 + 1;
rqstp->rq_enc_pages
- = kmalloc(rqstp->rq_enc_pages_num * sizeof(struct page *),
+ = kmalloc_array(rqstp->rq_enc_pages_num,
+ sizeof(struct page *),
GFP_NOFS);
if (!rqstp->rq_enc_pages)
goto out;