commit b5e2c150ac914f28a28833b57397bec0b0a2bd5f
author Thomas Graf <tgraf@suug.ch> Tue Mar 24 20:42:19 2015 +0000
committer David S. Miller <davem@davemloft.net> Tue Mar 24 17:48:40 2015 -0400
tree d22f31d07f001ac2afb5ca7a15de3fee73e74ab6
parent ac833bddb591b9c7a0609f440f196375be184044

rhashtable: Disable automatic shrinking by default

Introduce a new bool automatic_shrinking to require the
user to explicitly opt-in to automatic shrinking of tables.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

lib/rhashtable.c

diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index 50abe4f..50374d1 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -367,7 +367,7 @@
 
 	if (rht_grow_above_75(ht, tbl))
 		rhashtable_expand(ht);
-	else if (rht_shrink_below_30(ht, tbl))
+	else if (ht->p.automatic_shrinking && rht_shrink_below_30(ht, tbl))
 		rhashtable_shrink(ht);
 
 	err = rhashtable_rehash_table(ht);