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commit    ac2063ade566deb03e72e3da52cf472e125708b7
Author:   Robert Haas <rhaas@postgresql.org>
Date:     Mon Mar 31 17:06:26 2014 +0000
First released in: 9.4.0, 9.2.9, 9.3.5

    Count buffers dirtied due to hints in pgBufferUsage.shared_blks_dirtied.
    
    Previously, such buffers weren't counted, with the possible result that
    EXPLAIN (BUFFERS) and pg_stat_statements would understate the true
    number of blocks dirtied by an SQL statement.
    
    Back-patch to 9.2, where this counter was introduced.
    
    Amit Kapila


 src/backend/storage/buffer/bufmgr.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index a5e97c761da..f2f42659c14 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -2708,6 +2708,7 @@ MarkBufferDirtyHint(Buffer buffer, bool buffer_std)
 		if (dirtied)
 		{
 			VacuumPageDirty++;
+			pgBufferUsage.shared_blks_dirtied++;
 			if (VacuumCostActive)
 				VacuumCostBalance += VacuumCostPageDirty;
 		}


[parent: 3080bbaa9191]