On Mon, Mar 20, 2017 at 6:09 PM, Teodor Sigaev <teo...@sigaev.ru> wrote:

>       if (buf->usage_count < BM_MAX_USAGE_COUNT)
>>       if (BUF_STATE_GET_USAGECOUNT(buf_state) != BM_MAX_USAGE_COUNT)
>>
>>     being prone to paranoia, I prefer the first, but I've seen both
>> styles in
>>     the code so I don't know if it's worth futzing with.
>>
>>
>> Ok, let's be paranoic and do this same way as before.  Revised patch is
>> attached.
>>
>
> I see the change was done in 9.6 release cycle in commit
> 48354581a49c30f5757c203415aa8412d85b0f70 at April, 10. Does it mean the
> fix should be backpatched too?


I think so.  This patch reverts unintentional change and can be considered
as bug fix.
BTW, sorry for unicode filename in previous letter.
Patch with normal ASCII name is attached.

------
Alexander Korotkov
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company

Attachment: put-buffer-usagecount-logic-back-2.patch
Description: Binary data

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