pNFS: Don't zero out the array in nfs4_alloc_pages()

We don't need a zeroed out array, since it is immediately being filled.
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

fs/nfs/pnfs.c

@@ -965,7 +965,7 @@ static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
 	struct page **pages;
 	int i;
 
-	pages = kcalloc(size, sizeof(struct page *), gfp_flags);
+	pages = kmalloc_array(size, sizeof(struct page *), gfp_flags);
 	if (!pages) {
 		dprintk("%s: can't alloc array of %zu pages\n", __func__, size);
 		return NULL;
@@ -975,7 +975,7 @@ static struct page **nfs4_alloc_pages(size_t size, gfp_t gfp_flags)
 		pages[i] = alloc_page(gfp_flags);
 		if (!pages[i]) {
 			dprintk("%s: failed to allocate page\n", __func__);
-			nfs4_free_pages(pages, size);
+			nfs4_free_pages(pages, i);
 			return NULL;
 		}
 	}