MDEV-12545 Reduce the amount of fil_space_t lookups

buf_flush_write_block_low(): Acquire the tablespace reference once,
and pass it to lower-level functions. This is only a start; further
calls may be removed later.

1 files changed, 10 insertions, 8 deletions

diff --git a/storage/innobase/include/buf0buf.h b/storage/innobase/include/buf0buf.h
index 643e8c731e5..b4d39351370 100644
--- a/storage/innobase/include/buf0buf.h
+++ b/storage/innobase/include/buf0buf.h
@@ -1502,17 +1502,19 @@ buf_flush_update_zip_checksum(
 
 #endif /* !UNIV_HOTBACKUP */
 
-/********************************************************************//**
-The hook that is called just before a page is written to disk.
-The function encrypts the content of the page and returns a pointer
-to a frame that will be written instead of the real frame. */
+/** Encryption and page_compression hook that is called just before
+a page is written to disk.
+@param[in,out]	space		tablespace
+@param[in,out]	bpage		buffer page
+@param[in]	src_frame	physical page frame that is being encrypted
+@return	page frame to be written to file
+(may be src_frame or an encrypted/compressed copy of it) */
 UNIV_INTERN
 byte*
 buf_page_encrypt_before_write(
-/*==========================*/
-	buf_page_t*	page,		/*!< in/out: buffer page to be flushed */
-	byte*		frame,		/*!< in: src frame */
-	ulint		space_id);	/*!< in: space id */
+	fil_space_t*	space,
+	buf_page_t*	bpage,
+	byte*		src_frame);
 
 /**********************************************************************
 The hook that is called after page is written to disk.