--- zzzz-none-000/linux-4.4.271/fs/jffs2/scan.c	2021-06-03 06:22:09.000000000 +0000
+++ dakota-7530ac-750/linux-4.4.271/fs/jffs2/scan.c	2023-01-11 09:25:43.000000000 +0000
@@ -148,8 +148,14 @@
 		/* reset summary info for next eraseblock scan */
 		jffs2_sum_reset_collected(s);
 
-		ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
-						buf_size, s);
+		if (c->flags & (1 << 7)) {
+			if (mtd_block_isbad(c->mtd, jeb->offset))
+				ret = BLK_STATE_BADBLOCK;
+			else
+				ret = BLK_STATE_ALLFF;
+		} else
+			ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
+							buf_size, s);
 
 		if (ret < 0)
 			goto out;
@@ -561,6 +567,17 @@
 			return err;
 	}
 
+	if ((buf[0] == 0xde) &&
+		(buf[1] == 0xad) &&
+		(buf[2] == 0xc0) &&
+		(buf[3] == 0xde)) {
+		/* end of filesystem. erase everything after this point */
+		printk("%s(): End of filesystem marker found at 0x%x\n", __func__, jeb->offset);
+		c->flags |= (1 << 7);
+
+		return BLK_STATE_ALLFF;
+	}
+
 	/* We temporarily use 'ofs' as a pointer into the buffer/jeb */
 	ofs = 0;
 	max_ofs = EMPTY_SCAN_SIZE(c->sector_size);