diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index cd72409ccc94..004894e6dd23 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -11079,6 +11079,8 @@ static int btrfs_swap_activate(struct swap_info_struct *sis, struct file *file,
 		}
 
 		start += len;
+
+		cond_resched();
 	}
 
 	if (bsi.block_len)