RE: Concurrent-update problem in bufmgr.c

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От Mikheev, Vadim
Тема RE: Concurrent-update problem in bufmgr.c
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Msg-id 8F4C99C66D04D4118F580090272A7A23018CF8@SECTORBASE1
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Ответ на Concurrent-update problem in bufmgr.c  (Tom Lane <tgl@sss.pgh.pa.us>)
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> I believe the correct fix for this problem is for bufmgr.c to grab
> a read lock (BUFFER_LOCK_SHARED) on any page that it is writing out.
> A read lock is sufficient since there's no need to prevent other
> backends from reading the page, we just need to prevent them from
> changing it during the I/O.
> 
> Comments anyone?

Do it.

Vadim

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