Use correct release semantic in list update.

nscd uses lockfree lists and we need to ensure the correct release
semantics is used when adding to the list.

1 files changed, 6 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 6ddf9a1908..a81c5b46fb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,4 +1,10 @@
 2009-07-16  Ulrich Drepper  <drepper@redhat.com>
+
+	* nscd/cache.c (cache_add): Use atomic_compare_and_exchange_bool_rel
+	instead of atomic_compare_and_exchange_bool_acq to ensure pointer
+	is written before the list head update.
+	Patch by Andreas Schwab <aschwab@redhat.com>.
+
 	    Jakub Jelinek  <jakub@redhat.com>
 
 	* malloc/malloc.c [ATOMIC_FASTBINS] (_int_free): Make check for