diff options
| author | Simon Riggs <simon@2ndQuadrant.com> | 2012-12-03 12:20:31 +0000 |
|---|---|---|
| committer | Simon Riggs <simon@2ndQuadrant.com> | 2012-12-03 12:20:31 +0000 |
| commit | 7a764990d8c07c5f8f6c7ff3e8605d482b6778e0 (patch) | |
| tree | c706647c4cef9ec091c3e9bdaa74cd5fd5e40b24 /src/backend/access/transam/xlog.c | |
| parent | 1c563a2ae1c800c93fe5f41d0427e36bef874ba7 (diff) | |
| download | postgresql-7a764990d8c07c5f8f6c7ff3e8605d482b6778e0.tar.gz postgresql-7a764990d8c07c5f8f6c7ff3e8605d482b6778e0.zip | |
Clarify locking for PageGetLSN() in XLogCheckBuffer()
Diffstat (limited to 'src/backend/access/transam/xlog.c')
| -rw-r--r-- | src/backend/access/transam/xlog.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c index c8ac97fbf7f..411807006ac 100644 --- a/src/backend/access/transam/xlog.c +++ b/src/backend/access/transam/xlog.c @@ -1212,7 +1212,8 @@ XLogCheckBuffer(XLogRecData *rdata, bool doPageWrites, /* * 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 - * 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); |