branches/zip: Before calling buf_buddy_alloc() or buf_buddy_free(),

release any block mutexes but hold the buf_pool->mutex.

buf/buf0buf.c

@@ -1943,6 +1943,8 @@ buf_page_init(
 			(ulong) space,
 			(ulong) offset);
 #if defined UNIV_DEBUG || defined UNIV_BUF_DEBUG
+		mutex_exit(&block->mutex);
+		mutex_exit(&buf_pool->mutex);
 		buf_print();
 		buf_LRU_print();
 		buf_validate();
@@ -2133,13 +2135,11 @@ buf_page_init_for_read(
 				}
 			}
 
-			bpage->zip.data = NULL;
-			page_zip_set_size(&bpage->zip, 0);
+			mutex_exit(&block->mutex);
+			mutex_exit(&buf_pool->zip_mutex);
 
 			buf_buddy_free(bpage, sizeof *bpage);
 
-			mutex_exit(&block->mutex);
-			mutex_exit(&buf_pool->zip_mutex);
 			mutex_exit(&buf_pool->mutex);
 
 			if (mode == BUF_READ_IBUF_PAGES_ONLY) {
@@ -2182,8 +2182,12 @@ buf_page_init_for_read(
 	ut_ad(block);
 
 	if (zip_size) {
+		void*	data;
 		page_zip_set_size(&block->page.zip, zip_size);
-		block->page.zip.data = buf_buddy_alloc(zip_size, TRUE);
+		mutex_exit(&block->mutex);
+		data = buf_buddy_alloc(zip_size, TRUE);
+		mutex_enter(&block->mutex);
+		block->page.zip.data = data;
 	}
 
 	buf_page_init(space, offset, block);

buf/buf0lru.c

@@ -916,7 +916,6 @@ buf_LRU_free_block(
 		ut_a(bpage->buf_fix_count == 0);
 
 		mutex_enter(&(buf_pool->mutex));
-		mutex_enter(block_mutex);
 
 		if (bpage->zip.data) {
 			/* Keep the compressed page.
@@ -939,11 +938,17 @@ buf_LRU_free_block(
 
 				buf_LRU_insert_zip_clean(b);
 
+				mutex_enter(block_mutex);
+
 				bpage->zip.data = NULL;
 				page_zip_set_size(&bpage->zip, 0);
+
+				goto free_hashed;
 			}
 		}
 
+		mutex_enter(block_mutex);
+free_hashed:
 		buf_LRU_block_free_hashed_page((buf_block_t*) bpage);
 	} else {
 		mutex_enter(block_mutex);
@@ -992,7 +997,9 @@ buf_LRU_block_free_non_file_page(
 
 	if (data) {
 		block->page.zip.data = NULL;
+		mutex_exit(&block->mutex);
 		buf_buddy_free(data, page_zip_get_size(&block->page.zip));
+		mutex_enter(&block->mutex);
 		page_zip_set_size(&block->page.zip, 0);
 	}
 
@@ -1111,7 +1118,9 @@ buf_LRU_block_remove_hashed_page(
 			void*	data = bpage->zip.data;
 			bpage->zip.data = NULL;
 
+			mutex_exit(&((buf_block_t*) bpage)->mutex);
 			buf_buddy_free(data, page_zip_get_size(&bpage->zip));
+			mutex_enter(&((buf_block_t*) bpage)->mutex);
 			page_zip_set_size(&bpage->zip, 0);
 		}