Revert "Use "transient" files for blind writes, take 2".

This reverts commit fba105b1099f4f5fa7283bb17cba6fed2baa8d0c.
That approach had problems with the smgr-level state not tracking what
we really want to happen, and with the VFD-level state not tracking the
smgr-level state very well either.  In consequence, it was still possible
to hold kernel file descriptors open for long-gone tables (as in recent
report from Tore Halset), and yet there were also cases of FDs being closed
undesirably soon.  A replacement implementation will follow.

1 files changed, 0 insertions, 17 deletions

diff --git a/src/backend/storage/smgr/smgr.c b/src/backend/storage/smgr/smgr.c
index 0cec1477f3f..6319d1e8589 100644
--- a/src/backend/storage/smgr/smgr.c
+++ b/src/backend/storage/smgr/smgr.c
@@ -163,34 +163,17 @@ smgropen(RelFileNode rnode, BackendId backend)
 		reln->smgr_targblock = InvalidBlockNumber;
 		reln->smgr_fsm_nblocks = InvalidBlockNumber;
 		reln->smgr_vm_nblocks = InvalidBlockNumber;
-		reln->smgr_transient = false;
 		reln->smgr_which = 0;	/* we only have md.c at present */
 
 		/* mark it not open */
 		for (forknum = 0; forknum <= MAX_FORKNUM; forknum++)
 			reln->md_fd[forknum] = NULL;
 	}
-	else
-		/* if it was transient before, it no longer is */
-		reln->smgr_transient = false;
 
 	return reln;
 }
 
 /*
- * smgrsettransient() -- mark an SMgrRelation object as transaction-bound
- *
- * The main effect of this is that all opened files are marked to be
- * kernel-level closed (but not necessarily VFD-closed) when the current
- * transaction ends.
- */
-void
-smgrsettransient(SMgrRelation reln)
-{
-	reln->smgr_transient = true;
-}
-
-/*
  * smgrsetowner() -- Establish a long-lived reference to an SMgrRelation object
  *
  * There can be only one owner at a time; this is sufficient since currently