mm/zsmalloc.c: fix build when CONFIG_COMPACTION=n

BugLink: https://bugs.launchpad.net/bugs/1843338
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@intel.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Henry Burns <henrywolfeburns@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Jonathan Adams <jwadams@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index cac17234c582df51c4f3a24f4fb5ca31163e0831..a4490154178408fd4ec77d1dd865996ace5b32ef 100644 (file)
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -2432,7 +2432,9 @@ struct zs_pool *zs_create_pool(const char *name)
        if (!pool->name)
                goto err;
 
+#ifdef CONFIG_COMPACTION
        init_waitqueue_head(&pool->migration_wait);
+#endif
 
        if (create_cache(pool))
                goto err;