Re: PATCH: add pg_current_xlog_flush_location function

On Sun, Dec 13, 2015 at 12:07 AM, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com
> wrote:

> Hi,
>
> attached is a patch adding a function pg_current_xlog_flush_location(),
> which proved quite useful when investigating the ext4 data loss bug. It's
> mostly what was already sent to that thread, except for docs that were
> missing in the initial version.
>
>
/*

+ * Get latest WAL flush pointer

+ */

+XLogRecPtr

+GetXLogFlushRecPtr(void)

+{

+ SpinLockAcquire(&XLogCtl->info_lck);

+ LogwrtResult = XLogCtl->LogwrtResult;

+ SpinLockRelease(&XLogCtl->info_lck);

+

+ return LogwrtResult.Flush;

+}

+

Is there a reason why you can't use existing function
GetFlushRecPtr() in xlog.c?

With Regards,
Amit Kapila.
EnterpriseDB: http://www.enterprisedb.com