=== modified file 'Percona-Server/storage/innobase/buf/buf0lru.c'
--- Percona-Server/storage/innobase/buf/buf0lru.c	2012-08-10 06:51:31 +0000
+++ Percona-Server/storage/innobase/buf/buf0lru.c	2012-08-10 06:51:33 +0000
@@ -472,7 +472,7 @@
 	mutex_t*	block_mutex;
 	ibool		processed = FALSE;
 
-	ut_ad(buf_pool_mutex_own(buf_pool));
+	ut_ad(mutex_own(&buf_pool->LRU_list_mutex));
 	ut_ad(buf_flush_list_mutex_own(buf_pool));
 
 	block_mutex = buf_page_get_mutex(bpage);
@@ -595,11 +595,11 @@
 	ibool	all_freed;
 
 	do {
-		buf_pool_mutex_enter(buf_pool);
+		mutex_enter(&buf_pool->LRU_list_mutex);
 
 		all_freed = buf_flush_or_remove_pages(buf_pool, id);
 
-		buf_pool_mutex_exit(buf_pool);
+		mutex_exit(&buf_pool->LRU_list_mutex);
 
 		ut_ad(buf_flush_validate(buf_pool));
 
@@ -659,8 +659,16 @@
 			goto next_page;
 		} else {
 
-			block_mutex = buf_page_get_mutex(bpage);
-			mutex_enter(block_mutex);
+			block_mutex = buf_page_get_mutex_enter(bpage);
+
+			if (!block_mutex) {
+				/* It may be impossible case...
+				   Something wrong, so will be scan_again */
+
+				all_freed = FALSE;
+				goto next_page;
+			}
+
 
 			if (bpage->buf_fix_count > 0) {
 
@@ -694,7 +702,8 @@
 			ulint	page_no;
 			ulint	zip_size;
 
-			buf_pool_mutex_exit(buf_pool);
+			mutex_exit(&buf_pool->LRU_list_mutex);
+			rw_lock_x_unlock(&buf_pool->page_hash_latch);
 
 			zip_size = buf_page_get_zip_size(bpage);
 			page_no = buf_page_get_page_no(bpage);