diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/storage/buffer/bufmgr.c | 7 | ||||
| -rw-r--r-- | src/include/storage/buf_internals.h | 2 |
2 files changed, 7 insertions, 2 deletions
diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c index cf5b1e76caf..d00a60fab76 100644 --- a/src/backend/storage/buffer/bufmgr.c +++ b/src/backend/storage/buffer/bufmgr.c @@ -1169,10 +1169,15 @@ BufferAlloc(SMgrRelation smgr, char relpersistence, ForkNumber forkNum, * paranoia. We also reset the usage_count since any recency of use of * the old content is no longer relevant. (The usage_count starts out at * 1 so that the buffer can survive one clock-sweep pass.) + * + * Make sure BM_PERMANENT is set for buffers that must be written at every + * checkpoint. Unlogged buffers only need to be written at shutdown + * checkpoints, except for their "init" forks, which need to be treated + * just like permanent relations. */ buf->tag = newTag; buf->flags &= ~(BM_VALID | BM_DIRTY | BM_JUST_DIRTIED | BM_CHECKPOINT_NEEDED | BM_IO_ERROR | BM_PERMANENT); - if (relpersistence == RELPERSISTENCE_PERMANENT) + if (relpersistence == RELPERSISTENCE_PERMANENT || forkNum == INIT_FORKNUM) buf->flags |= BM_TAG_VALID | BM_PERMANENT; else buf->flags |= BM_TAG_VALID; diff --git a/src/include/storage/buf_internals.h b/src/include/storage/buf_internals.h index 521ee1cfaea..ecbcf392bc5 100644 --- a/src/include/storage/buf_internals.h +++ b/src/include/storage/buf_internals.h @@ -39,7 +39,7 @@ #define BM_PIN_COUNT_WAITER (1 << 6) /* have waiter for sole pin */ #define BM_CHECKPOINT_NEEDED (1 << 7) /* must write for checkpoint */ #define BM_PERMANENT (1 << 8) /* permanent relation (not - * unlogged) */ + * unlogged, or init fork) */ typedef bits16 BufFlags; |