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Re: lock mode for ControlFileLock which pg_start_backup uses - Mailing list pgsql-hackers

From Takahiro Itagaki
Subject Re: lock mode for ControlFileLock which pg_start_backup uses
Date
Msg-id 20100310110939.90A3.52131E4D@oss.ntt.co.jp
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In response to lock mode for ControlFileLock which pg_start_backup uses  (Fujii Masao <masao.fujii@gmail.com>)
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Fujii Masao <masao.fujii@gmail.com> wrote:

> Currently pg_start_backup() accesses the shared ControlFile
> by using ControlFileLock with LW_EXCLUSIVE lock mode. But
> since that access is read-only operation, LW_SHARED should
> be chosen instead of LW_EXCLUSIVE.
> 
> The attached patch changes the lock mode which pg_start_backup()
> uses. Is it worth applying this patch?

Thanks, applied.

Regards,
---
Takahiro Itagaki
NTT Open Source Software Center

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