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commit    066254cea117a5a40d21401f754c83cc163378ae
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 19eecab4c28..4e46ddbba29 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -2707,6 +2707,7 @@ MarkBufferDirtyHint(Buffer buffer, bool buffer_std)
 		if (dirtied)
 		{
 			VacuumPageDirty++;
+			pgBufferUsage.shared_blks_dirtied++;
 			if (VacuumCostActive)
 				VacuumCostBalance += VacuumCostPageDirty;
 		}


[parent: 3f0e4be453ff]