diff options
Diffstat (limited to 'src/backend/storage/aio/read_stream.c')
| -rw-r--r-- | src/backend/storage/aio/read_stream.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/backend/storage/aio/read_stream.c b/src/backend/storage/aio/read_stream.c index b9e11a28312..9a70a81f7ae 100644 --- a/src/backend/storage/aio/read_stream.c +++ b/src/backend/storage/aio/read_stream.c @@ -419,6 +419,7 @@ read_stream_begin_relation(int flags, size_t size; int16 queue_size; int16 max_ios; + int strategy_pin_limit; uint32 max_pinned_buffers; Oid tablespace_id; SMgrRelation smgr; @@ -460,6 +461,10 @@ read_stream_begin_relation(int flags, max_pinned_buffers = Min(max_pinned_buffers, PG_INT16_MAX - io_combine_limit - 1); + /* Give the strategy a chance to limit the number of buffers we pin. */ + strategy_pin_limit = GetAccessStrategyPinLimit(strategy); + max_pinned_buffers = Min(strategy_pin_limit, max_pinned_buffers); + /* Don't allow this backend to pin more than its share of buffers. */ if (SmgrIsTemp(smgr)) LimitAdditionalLocalPins(&max_pinned_buffers); |