[PATCH] bcache: fix error return value in memory shrink

[tang . junhui]

From: Tang Junhui <tang.jun...@zte.com.cn>

In bch_mca_scan(), the return value should not be the number of freed btree
nodes, but the number of pages of freed btree nodes.

Signed-off-by: Tang Junhui <tang.jun...@zte.com.cn>
---
 drivers/md/bcache/btree.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/bcache/btree.c b/drivers/md/bcache/btree.c
index 81e8dc3..a5fbccc 100644
--- a/drivers/md/bcache/btree.c
+++ b/drivers/md/bcache/btree.c
@@ -718,7 +718,7 @@ static unsigned long bch_mca_scan(struct shrinker *shrink,
        }
 out:
        mutex_unlock(&c->bucket_lock);
-       return freed;
+       return freed * c->btree_pages;
 }
 
 static unsigned long bch_mca_count(struct shrinker *shrink,
-- 
1.8.3.1