diff options
Diffstat (limited to 'src/backend/storage/buffer/bufmgr.c')
| -rw-r--r-- | src/backend/storage/buffer/bufmgr.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c index f96685db50b..b12348b39dd 100644 --- a/src/backend/storage/buffer/bufmgr.c +++ b/src/backend/storage/buffer/bufmgr.c @@ -1834,7 +1834,10 @@ BufferGetTag(Buffer buffer, RelFileNode *rnode, ForkNumber *forknum, * written.) * * If the caller has an smgr reference for the buffer's relation, pass it - * as the second parameter. If not, pass NULL. + * as the second parameter. If not, pass NULL. In the latter case, the + * relation will be marked as "transient" so that the corresponding + * kernel-level file descriptors are closed when the current transaction ends, + * if any. */ static void FlushBuffer(volatile BufferDesc *buf, SMgrRelation reln) @@ -1856,9 +1859,12 @@ FlushBuffer(volatile BufferDesc *buf, SMgrRelation reln) errcontext.previous = error_context_stack; error_context_stack = &errcontext; - /* Find smgr relation for buffer */ + /* Find smgr relation for buffer, and mark it as transient */ if (reln == NULL) + { reln = smgropen(buf->tag.rnode, InvalidBackendId); + smgrsettransient(reln); + } TRACE_POSTGRESQL_BUFFER_FLUSH_START(buf->tag.forkNum, buf->tag.blockNum, |