linux-kernel - [PATCH 4.19 39/93] mm/zsmalloc.c: fix build when CONFIG

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Message-Id: <20190904175306.592082075@linuxfoundation.org>
Date:   Wed,  4 Sep 2019 19:53:41 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kbuild test robot <lkp@...el.com>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Henry Burns <henrywolfeburns@...il.com>,
        Minchan Kim <minchan@...nel.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Jonathan Adams <jwadams@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 4.19 39/93] mm/zsmalloc.c: fix build when CONFIG_COMPACTION=n

From: Andrew Morton <akpm@...ux-foundation.org>

commit 441e254cd40dc03beec3c650ce6ce6074bc6517f upstream.

Fixes: 701d678599d0c1 ("mm/zsmalloc.c: fix race condition in zs_destroy_pool")
Link: http://lkml.kernel.org/r/201908251039.5oSbEEUT%25lkp@intel.com
Reported-by: kbuild test robot <lkp@...el.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc: Henry Burns <henrywolfeburns@...il.com>
Cc: Minchan Kim <minchan@...nel.org>
Cc: Shakeel Butt <shakeelb@...gle.com>
Cc: Jonathan Adams <jwadams@...gle.com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 mm/zsmalloc.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -2432,7 +2432,9 @@ 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;