branches/zip: buf_flush_remove(): buf_page_get_mutex(bpage) must have been

acquired by the caller.

buf_LRU_invalidate_tablespace(): Do not leak buf_pool->zip_mutex when
rescanning the LRU list.

buf/buf0flu.c

@@ -227,6 +227,7 @@ buf_flush_remove(
 {
 #ifdef UNIV_SYNC_DEBUG
 	ut_a(mutex_own(&buf_pool->mutex));
+	ut_a(mutex_own(buf_page_get_mutex(bpage)));
 #endif /* UNIV_SYNC_DEBUG */
 
 	ut_ad(bpage->in_flush_list);
@@ -243,9 +244,7 @@ buf_flush_remove(
 		ut_error;
 		return;
 	case BUF_BLOCK_ZIP_DIRTY:
-		mutex_enter(&buf_pool->zip_mutex);
 		buf_page_set_state(bpage, BUF_BLOCK_ZIP_PAGE);
-		mutex_exit(&buf_pool->zip_mutex);
 		UT_LIST_REMOVE(list, buf_pool->flush_list, bpage);
 		buf_LRU_insert_zip_clean(bpage);
 		break;

buf/buf0lru.c

@@ -105,6 +105,7 @@ scan_again:
 		ut_a(buf_page_in_file(bpage));
 
 		mutex_enter(block_mutex);
+next_zip:
 		prev_bpage = UT_LIST_GET_PREV(LRU, bpage);
 
 		if (buf_page_get_space(bpage) == id) {
@@ -162,7 +163,7 @@ scan_again:
 				prev_bpage.  Rescan the LRU list. */
 
 				bpage = UT_LIST_GET_LAST(buf_pool->LRU);
-				continue;
+				goto next_zip;
 			}
 		}
 next_page: