From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm/zsmalloc.c: fix build when CONFIG_COMPACTION=n
Fixes: 701d678599d0c1 ("mm/zsmalloc.c: fix race condition in zs_destroy_pool")
Link: http://lkml.kernel.org/r/201908251039.5oSbEEUT%25lkp@xxxxxxxxx
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Cc: Sergey Senozhatsky <sergey.senozhatsky@xxxxxxxxx>
Cc: Henry Burns <henrywolfeburns@xxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Jonathan Adams <jwadams@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/zsmalloc.c | 2 ++
1 file changed, 2 insertions(+)
--- a/mm/zsmalloc.c~mm-zsmallocc-fix-build-when-config_compaction=n
+++ a/mm/zsmalloc.c
@@ -2412,7 +2412,9 @@ struct zs_pool *zs_create_pool(const cha
if (!pool->name)
goto err;
+#ifdef CONFIG_COMPACTION
init_waitqueue_head(&pool->migration_wait);
+#endif
if (create_cache(pool))
goto err;
_
