openwrt/target/linux/generic-2.6/patches-2.6.24/070-redboot_space.patch

--- a/drivers/mtd/redboot.c
+++ b/drivers/mtd/redboot.c
@@ -236,14 +236,21 @@
 #endif
 		names += strlen(names)+1;
 
-#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
 		if(fl->next && fl->img->flash_base + fl->img->size + master->erasesize <= fl->next->img->flash_base) {
-			i++;
-			parts[i].offset = parts[i-1].size + parts[i-1].offset;
-			parts[i].size = fl->next->img->flash_base - parts[i].offset;
-			parts[i].name = nullname;
-		}
+			if (!strcmp(parts[i].name, "rootfs")) {
+				parts[i].size = fl->next->img->flash_base;
+				parts[i].size &= ~(master->erasesize - 1);
+				parts[i].size -= parts[i].offset;
+			}
+#ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+			else {
+				i++;
+				parts[i].offset = parts[i-1].size + parts[i-1].offset;
+				parts[i].size = fl->next->img->flash_base - parts[i].offset;
+				parts[i].name = nullname;
+			}
 #endif
+		}
 		tmp_fl = fl;
 		fl = fl->next;
 		kfree(tmp_fl);