Here is a revised patch to renewal NDirectFileRead/Write.
> Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > * Let's rename them BufFileReadCount and BufFileWriteCount to reflect
> > their actual purpose.
> > * In any case I agree that the current arrangement
> > with execdebug.h declaring variables defined in bufmgr.c is just weird.
- NDirectFile{Read|Write} are renamed to BufFile{Read|Write}Count.
- They are still declared in execdebug.h and buffile.c includes it.
I did not touch messages in ShowBufferUsage() in the patch.
I think it still has meaning because BufFile counters are
kinds of direct block access.
> ShowBufferUsage()
> ! Shared blocks: ...
> ! Local blocks: ...
> ! Direct blocks: <R> read, <W> written
Regards,
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ITAGAKI Takahiro
NTT Open Source Software Center
