zsmalloc: remove synchronize_rcu from zs_compact()

Do not synchronize rcu in zs_compact(). Neither zsmalloc not
zram use rcu.

Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Nitin Gupta <ngupta@vflare.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 2 deletions

diff --git a/mm/zsmalloc.c b/mm/zsmalloc.c
index 7a48e5568d46..8705a010e2d3 100644
--- a/mm/zsmalloc.c
+++ b/mm/zsmalloc.c
@@ -1778,8 +1778,6 @@ unsigned long zs_compact(struct zs_pool *pool)
                 nr_migrated += __zs_compact(pool, class);
         }
 
-        synchronize_rcu();
-
         return nr_migrated;
 }
 EXPORT_SYMBOL_GPL(zs_compact);