branches/zip: After merge fix, and cleanup.

btr_validate_level(): Add missing parameter to added buf_page_print() calls.

btr_root_raise_and_insert(): Replace low-level code with page_zip_copy().

page_zip_copy(): New function to copy the data payload of a compressed page,
byte for byte.  The file page header and trailer are not copied, to avoid
overwriting the fields FIL_PAGE_OFFSET, FIL_PAGE_PREV and FIL_PAGE_NEXT.

btr/btr0btr.c

@@ -1095,24 +1095,11 @@ btr_root_raise_and_insert(
 
 	if (UNIV_UNLIKELY(!page_copy_rec_list_end(new_page, new_page_zip,
 			page_get_infimum_rec(root), cursor->index, mtr))) {
-		byte	page_no[4];
 		ut_a(new_page_zip);
 
-		/* Copy the pages byte for byte and restore the page offset.
-		This cannot fail, because the compressed page
-		will be modified in place. */
-		memcpy(page_no, new_page + FIL_PAGE_OFFSET, 4);
-		memcpy(new_page, root, UNIV_PAGE_SIZE);
-		memcpy(new_page + FIL_PAGE_OFFSET, page_no, 4);
-
-		memcpy(new_page_zip->data, root_page_zip->data,
-				new_page_zip->size);
-		memcpy(new_page_zip->data + FIL_PAGE_OFFSET, page_no, 4);
-
-		new_page_zip->n_blobs = 0;
-		new_page_zip->m_start = root_page_zip->m_start;
-		new_page_zip->m_end = root_page_zip->m_end;
-		page_zip_compress_write_log(new_page_zip, new_page, mtr);
+		/* Copy the page byte for byte. */
+		page_zip_copy(new_page_zip, new_page,
+				root_page_zip, root, mtr);
 	}
 
 	/* If this is a pessimistic insert which is actually done to
@@ -2964,8 +2951,8 @@ btr_validate_level(
 			btr_validate_report2(index, level, page, right_page);
 			fputs("InnoDB: broken FIL_PAGE_NEXT"
 				" or FIL_PAGE_PREV links\n", stderr);
-			buf_page_print(page);
-			buf_page_print(right_page);
+			buf_page_print(page, 0);
+			buf_page_print(right_page, 0);
 
 			ret = FALSE;
 		}
@@ -2974,8 +2961,8 @@ btr_validate_level(
 				!= page_is_comp(page))) {
 			btr_validate_report2(index, level, page, right_page);
 			fputs("InnoDB: 'compact' flag mismatch\n", stderr);
-			buf_page_print(page);
-			buf_page_print(right_page);
+			buf_page_print(page, 0);
+			buf_page_print(right_page, 0);
 
 			ret = FALSE;
 

include/page0zip.h

@@ -267,6 +267,19 @@ page_zip_write_header(
 	mtr_t*		mtr)	/* in: mini-transaction, or NULL */
 	__attribute__((nonnull(1,2)));
 
+/**************************************************************************
+Copy a page byte for byte, except for the file page header and trailer. */
+
+void
+page_zip_copy(
+/*==========*/
+	page_zip_des_t*		page_zip,	/* out: copy of src_zip */
+	page_t*			page,		/* out: copy of src */
+	const page_zip_des_t*	src_zip,	/* in: compressed page */
+	const page_t*		src,		/* in: page */
+	mtr_t*			mtr)		/* in: mini-transaction */
+	__attribute__((nonnull(1,2,3,4)));
+
 /**************************************************************************
 Write a log record of compressing an index page. */
 

page/page0zip.c

@@ -2928,6 +2928,37 @@ page_zip_write_header_log(
 	mlog_catenate_string(mtr, data, length);
 }
 
+/**************************************************************************
+Copy a page byte for byte, except for the file page header and trailer. */
+
+void
+page_zip_copy(
+/*==========*/
+	page_zip_des_t*		page_zip,	/* out: copy of src_zip */
+	page_t*			page,		/* out: copy of src */
+	const page_zip_des_t*	src_zip,	/* in: compressed page */
+	const page_t*		src,		/* in: page */
+	mtr_t*			mtr)		/* in: mini-transaction */
+{
+#if defined UNIV_DEBUG || defined UNIV_ZIP_DEBUG
+	ut_a(page_zip_validate(src_zip, src));
+#endif /* UNIV_DEBUG || UNIV_ZIP_DEBUG */
+	ut_a(page_zip->size == src_zip->size);
+
+	/* Skip the file page header and trailer. */
+	memcpy(page + FIL_PAGE_DATA, src + FIL_PAGE_DATA,
+			UNIV_PAGE_SIZE - FIL_PAGE_DATA
+			- FIL_PAGE_DATA_END);
+	memcpy(page_zip->data + FIL_PAGE_DATA,
+			src_zip->data + FIL_PAGE_DATA,
+			page_zip->size - FIL_PAGE_DATA);
+
+	page_zip->n_blobs = src_zip->n_blobs;
+	page_zip->m_start = src_zip->m_start;
+	page_zip->m_end = src_zip->m_end;
+	page_zip_compress_write_log(page_zip, page, mtr);
+}
+
 /**************************************************************************
 Write a log record of compressing an index page. */