MarkBufferDirty() always increment BufferUsage counter
(shared_blks_dirtied) for dirty blocks whenever it dirties any
block, whereas same is not true for MarkBufferDirtyHint().
Is there any particular reason for not incrementing
shared_blks_dirtied in MarkBufferDirtyHint()?
With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com