diff --git a/mm/shmem.c b/mm/shmem.c
index f495af51042e..a7c23b43b57f 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -827,17 +827,149 @@ static void shmem_delete_from_page_cache(struct page *page, void *radswap)
 	BUG_ON(error);
 }
 
+static int shmem_add_aligned_to_page_cache(struct page *pages[], int npages,
+					   struct address_space *mapping,
+					   pgoff_t index, gfp_t gfp, int order,
+					   struct mm_struct *charge_mm)
+{
+	int xa_shift = order + XA_CHUNK_SHIFT - (order % XA_CHUNK_SHIFT);
+	XA_STATE_ORDER(xas, &mapping->i_pages, index, xa_shift);
+	struct xarray xa_tmp;
+	/*
+	 * Specify order so xas_create_range() only needs to be called once
+	 * to allocate the entire range.  This guarantees that xas_store()
+	 * will not fail due to lack of memory.
+	 * Specify index == 0 so the minimum necessary nodes are allocated.
+	 */
+	XA_STATE_ORDER(xas_tmp, &xa_tmp, 0, xa_shift);
+	unsigned long nr = 1UL << order;
+	struct xa_node *node;
+	int i, error;
+
+	if (npages * nr != 1 << xa_shift) {
+		WARN_ONCE(1, "npages (%d) not aligned to xa_shift\n", npages);
+		return -EINVAL;
+	}
+	if (!IS_ALIGNED(index, 1 << xa_shift)) {
+		WARN_ONCE(1, "index (%lu) not aligned to xa_shift\n", index);
+		return -EINVAL;
+	}
+
+	for (i = 0; i < npages; i++) {
+		bool skipcharge = page_memcg(pages[i]) ? true : false;
+
+		VM_BUG_ON_PAGE(PageTail(pages[i]), pages[i]);
+		VM_BUG_ON_PAGE(!PageLocked(pages[i]), pages[i]);
+		VM_BUG_ON_PAGE(!PageSwapBacked(pages[i]), pages[i]);
+
+		page_ref_add(pages[i], nr);
+		pages[i]->mapping = mapping;
+		pages[i]->index = index + (i * nr);
+
+		if (!skipcharge && !PageSwapCache(pages[i])) {
+			error = mem_cgroup_charge(pages[i], charge_mm, gfp);
+			if (error) {
+				if (PageTransHuge(pages[i])) {
+					count_vm_event(THP_FILE_FALLBACK);
+					count_vm_event(THP_FILE_FALLBACK_CHARGE);
+				}
+				goto error;
+			}
+		}
+		cgroup_throttle_swaprate(pages[i], gfp);
+	}
+
+	xa_init(&xa_tmp);
+	do {
+		xas_lock(&xas_tmp);
+		xas_create_range(&xas_tmp);
+		if (xas_error(&xas_tmp))
+			goto unlock;
+		for (i = 0; i < npages; i++) {
+			int j = 0;
+next:
+			xas_store(&xas_tmp, pages[i]);
+			if (++j < nr) {
+				xas_next(&xas_tmp);
+				goto next;
+			}
+			if (i < npages - 1)
+				xas_next(&xas_tmp);
+		}
+		xas_set_order(&xas_tmp, 0, xa_shift);
+		node = xas_export_node(&xas_tmp);
+unlock:
+		xas_unlock(&xas_tmp);
+	} while (xas_nomem(&xas_tmp, gfp));
+
+	if (xas_error(&xas_tmp)) {
+		error = xas_error(&xas_tmp);
+		i = npages - 1;
+		goto error;
+	}
+
+	do {
+		xas_lock_irq(&xas);
+		xas_import_node(&xas, node);
+		if (xas_error(&xas))
+			goto unlock1;
+		mapping->nrpages += nr * npages;
+		xas_unlock(&xas);
+		for (i = 0; i < npages; i++) {
+			__mod_lruvec_page_state(pages[i], NR_FILE_PAGES, nr);
+			__mod_lruvec_page_state(pages[i], NR_SHMEM, nr);
+			if (PageTransHuge(pages[i])) {
+				count_vm_event(THP_FILE_ALLOC);
+				__inc_node_page_state(pages[i], NR_SHMEM_THPS);
+			}
+		}
+		local_irq_enable();
+		break;
+unlock1:
+		xas_unlock_irq(&xas);
+	} while (xas_nomem(&xas, gfp));
+
+	if (xas_error(&xas)) {
+		error = xas_error(&xas);
+		goto error;
+	}
+
+	return 0;
+error:
+	while (i != 0) {
+		pages[i]->mapping = NULL;
+		page_ref_sub(pages[i], nr);
+		i--;
+	}
+	return error;
+}
+
 static int shmem_add_pages_to_cache(struct page *pages[], int npages,
 				struct address_space *mapping,
 				pgoff_t start, gfp_t gfp,
 				struct mm_struct *charge_mm)
 {
 	pgoff_t index = start;
-	int i, err;
+	int i, j, err;
 
 	i = 0;
 	while (i < npages) {
 		if (PageTransHuge(pages[i])) {
+			if (IS_ALIGNED(index, 4096) && i+8 <= npages) {
+				for (j = 1; j < 8; j++) {
+					if (!PageTransHuge(pages[i+j]))
+						break;
+				}
+				if (j == 8) {
+					err = shmem_add_aligned_to_page_cache(&pages[i], 8, mapping, index, gfp, HPAGE_PMD_ORDER, charge_mm);
+					if (err)
+						goto out_release;
+					index += HPAGE_PMD_NR * 8;
+					i += 8;
+					continue;
+				}
+			}
+
 			err = shmem_add_to_page_cache_fast(pages[i], mapping, index, gfp, charge_mm, page_memcg(pages[i]) ? true : false);
 			if (err)
 				goto out_release;
@@ -846,11 +978,29 @@ static int shmem_add_pages_to_cache(struct page *pages[], int npages,
 			continue;
 		}
 
-		err = shmem_add_to_page_cache_fast(pages[i], mapping, index, gfp, charge_mm, page_memcg(pages[i]) ? true : false);
-		if (err)
-			goto out_release;
-		index++;
-		i++;
+		for (j = 1; i + j < npages; j++) {
+			if (PageTransHuge(pages[i + j]))
+				break;
+		}
+
+		while (j > 0) {
+			if (IS_ALIGNED(index, 64) && j >= 64) {
+				err = shmem_add_aligned_to_page_cache(&pages[i], 64, mapping, index, gfp, 0, charge_mm);
+				if (err)
+					goto out_release;
+				index += 64;
+				i += 64;
+				j -= 64;
+				continue;
+			}
+
+			err = shmem_add_to_page_cache_fast(pages[i], mapping, index, gfp, charge_mm, page_memcg(pages[i]) ? true : false);
+			if (err)
+				goto out_release;
+			index++;
+			i++;
+			j--;
+		}
 	}
 	return 0;
 
