git.postgresql.org Git - postgresql.git/commitdiff

git projects / postgresql.git / commitdiff

Fix outdated comment that talked about seek position of WAL file.

author Heikki Linnakangas <heikki.linnakangas@iki.fi>

2021年6月16日 09:34:32 +0000 (12:34 +0300)

committer Heikki Linnakangas <heikki.linnakangas@iki.fi>

2021年6月16日 09:36:15 +0000 (12:36 +0300)

Since commit c24dcd0cfd, we have been using pg_pread() to read the WAL
file, which doesn't change the seek position (unless we fall back to
the implementation in src/port/pread.c). Update comment accordingly.

Backpatch-through: 12, where we started to use pg_pread()

src/backend/access/transam/xlog.c patch | blob | blame | history

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c

index 17eeff072004c8ed4f7643590ff96286cc1192dd..1b3a3d9beab9c287d367575f60481a351e3918da 100644 (file)

--- a/src/backend/access/transam/xlog.c

+++ b/src/backend/access/transam/xlog.c

@@ -809,11 +809,9 @@ static XLogSegNo openLogSegNo = 0;

* These variables are used similarly to the ones above, but for reading

- * the XLOG. Note, however, that readOff generally represents the offset

- * of the page just read, not the seek position of the FD itself, which

- * will be just past that page. readLen indicates how much of the current

- * page has been read into readBuf, and readSource indicates where we got

- * the currently open file from.