diff --git a/mm/shmem.c b/mm/shmem.c
index 02de6326ef3b..eb2e6e50630c 100644
--- a/mm/shmem.c
+++ b/mm/shmem.c
@@ -1434,14 +1434,16 @@ static void shmem_undo_range(struct inode *inode, loff_t lstart, uoff_t lend,
 					order = shmem_confirm_swap(mapping, indices[i],
 								   radix_to_swp_entry(folio));
 					/*
-					 * If found a large swap entry cross the end or start
-					 * border, skip it as the truncate_inode_partial_folio
-					 * above should have at least zerod its content once.
+					 * Skip boundary entries when restarting
+					 * the scan to avoid endless loops after
+					 * swapin failure.
 					 */
 					if (order > 0) {
 						base = round_down(base, 1 << order);
-						if (base < start || base + (1 << order) > end)
+						if (base < start || base + (1 << order) > end) {
+							start = max(start, base + (1 << order));
 							continue;
+						}
 					}
 					/* Swap was replaced by page or extended, retry */
 					index = base;