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Clarify locking for PageGetLSN() in XLogCheckBuffer()

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Simon Riggs
2012-12-03 12:20:31 +00:00
parent 1c563a2ae1
commit 7a764990d8
1 changed files with 2 additions and 1 deletions
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3
src/backend/access/transam/xlog.c
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@ -1212,7 +1212,8 @@ XLogCheckBuffer(XLogRecData *rdata, bool doPageWrites,
/* /*
* XXX We assume page LSN is first data on *every* page that can be passed * XXX We assume page LSN is first data on *every* page that can be passed
* to XLogInsert, whether it otherwise has the standard page layout or * to XLogInsert, whether it otherwise has the standard page layout or
* not. * not. We don't need the buffer header lock for PageGetLSN because we
* have exclusive lock on the page and/or the relation.
*/ */
*lsn = PageGetLSN(page); *lsn = PageGetLSN(page);