Make pgstatindex respond to cancel interrupts.

A similar problem for pgstattuple() was fixed in April of 2010 by commit
33065ef8bc52253ae855bc959576e52d8a28ba06, but pgstatindex() seems to have
been overlooked.

Back-patch all the way, as with that commit, though not to 7.4 through
8.1, since those are now EOL.

diff --git a/contrib/pgstattuple/pgstatindex.c b/contrib/pgstattuple/pgstatindex.c
index 178065ceda57f91142675966a939889a4d2eed29..beff1b9855baefb770e8109aa51de45420dc6a37 100644 (file)
--- a/contrib/pgstattuple/pgstatindex.c
+++ b/contrib/pgstattuple/pgstatindex.c
@@ -156,6 +156,8 @@ pgstatindex(PG_FUNCTION_ARGS)
        Page        page;
        BTPageOpaque opaque;
 
+       CHECK_FOR_INTERRUPTS();
+
        /* Read and lock buffer */
        buffer = ReadBuffer(rel, blkno);
        LockBuffer(buffer, BUFFER_LOCK_SHARE);