MDEV-31350: Hang in innodb.recovery_memory

dr-m · vuvova · commit cf37e44eecca · 2023-06-03T11:12:32.000+02:00
buf_flush_page_cleaner(): Whenever buf_pool.ran_out(), invoke buf_pool.get_oldest_modification(0) so that all clean blocks will be removed from buf_pool.flush_list and buf_flush_LRU_list_batch() will be able to evict some pages. This fixes a regression that was likely caused by commit a55b951 (MDEV-26827).
diff --git a/storage/innobase/buf/buf0flu.cc b/storage/innobase/buf/buf0flu.cc
@@ -2322,6 +2322,7 @@ static void buf_flush_page_cleaner()
     else if (buf_pool.ran_out())
     {
       buf_pool.page_cleaner_set_idle(false);
+      buf_pool.get_oldest_modification(0);
       mysql_mutex_unlock(&buf_pool.flush_list_mutex);
       n= srv_max_io_capacity;
       mysql_mutex_lock(&buf_pool.mutex);

Original file line number	Diff line number	Diff line change
`@@ -2322,6 +2322,7 @@ static void buf_flush_page_cleaner()`
`2322`	`2322`	`else if (buf_pool.ran_out())`
`2323`	`2323`	`{`
`2324`	`2324`	`buf_pool.page_cleaner_set_idle(false);`
	`2325`	`+ buf_pool.get_oldest_modification(0);`
`2325`	`2326`	`mysql_mutex_unlock(&buf_pool.flush_list_mutex);`
`2326`	`2327`	`n= srv_max_io_capacity;`
`2327`	`2328`	`mysql_mutex_lock(&buf_pool.mutex);`