Merge innodb_buffer_pool_pages_LRU_flushed into buf_get_total_stat()

struct buf_pool_stat_t{
	ulint	n_page_gets;	/*!< number of page gets performed;
				also successful searches through
				the adaptive hash index are
				counted as page gets. */
	ulint	n_pages_read;	/*!< number read operations.  Accessed
				atomically. */
	ulint	n_pages_written;/*!< number write operations.  Accessed
				atomically.*/
	ulint	n_pages_created;/*!< number of pages created
				in the pool with no read */
	ulint	n_ra_pages_read_rnd;/*!< number of pages read in
				as part of random read ahead */
	ulint	n_ra_pages_read;/*!< number of pages read in
				as part of read ahead */
	ulint	n_ra_pages_evicted;/*!< number of read ahead
				pages that are evicted without
				being accessed */
	ulint	n_pages_made_young; /*!< number of pages made young, in
				calls to buf_LRU_make_block_young() */
	ulint	n_pages_not_made_young; /*!< number of pages not made
				young because the first access
				was not long enough ago, in
				buf_page_peek_if_too_old() */

	ulint	LRU_bytes;	/*!< LRU size in bytes */
	ulint	flush_list_bytes;/*!< flush_list size in bytes */
***
	ulint	buf_lru_flush_page_count;
***
};

UNIV_INTERN
void
buf_get_total_stat(
/*===============*/
	buf_pool_stat_t*	tot_stat)	/*!< out: buffer pool stats */
{
	ulint			i;

	memset(tot_stat, 0, sizeof(*tot_stat));

	for (i = 0; i < srv_buf_pool_instances; i++) {
		buf_pool_stat_t*buf_stat;
		buf_pool_t*	buf_pool;

		buf_pool = buf_pool_from_array(i);

		buf_stat = &buf_pool->stat;
		tot_stat->n_page_gets += buf_stat->n_page_gets;
		tot_stat->n_pages_read += buf_stat->n_pages_read;
		tot_stat->n_pages_written += buf_stat->n_pages_written;
		tot_stat->n_pages_created += buf_stat->n_pages_created;
		tot_stat->n_ra_pages_read_rnd += buf_stat->n_ra_pages_read_rnd;
		tot_stat->n_ra_pages_read += buf_stat->n_ra_pages_read;
		tot_stat->n_ra_pages_evicted += buf_stat->n_ra_pages_evicted;
		tot_stat->n_pages_made_young += buf_stat->n_pages_made_young;

		tot_stat->n_pages_not_made_young +=
			buf_stat->n_pages_not_made_young;
	}
}
 

index 9d3e5b3..1db6770 100644
--- a/storage/innobase/buf/buf0buf.cc
+++ b/storage/innobase/buf/buf0buf.cc
@@ -467,6 +467,8 @@ buf_get_total_stat(
 
                tot_stat->n_pages_not_made_young +=
                        buf_stat->n_pages_not_made_young;
+
+               tot_stat->buf_lru_flush_page_count += buf_stat->buf_lru_flush_page_count;
        }
 }