--- zzzz-none-000/linux-3.10.107/fs/jffs2/summary.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/fs/jffs2/summary.c	2021-02-04 17:41:59.000000000 +0000
@@ -844,6 +844,7 @@
 /* Write out summary information - called from jffs2_do_reserve_space */
 
 int jffs2_sum_write_sumnode(struct jffs2_sb_info *c)
+	__must_hold(&c->erase_completion_block)
 {
 	int datasize, infosize, padsize;
 	struct jffs2_eraseblock *jeb;