diff options
Diffstat (limited to 'src/backend/storage/aio/method_worker.c')
| -rw-r--r-- | src/backend/storage/aio/method_worker.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/backend/storage/aio/method_worker.c b/src/backend/storage/aio/method_worker.c index 743cccc2acd..36be179678d 100644 --- a/src/backend/storage/aio/method_worker.c +++ b/src/backend/storage/aio/method_worker.c @@ -461,7 +461,12 @@ IoWorkerMain(const void *startup_data, size_t startup_data_len) int nwakeups = 0; int worker; - /* Try to get a job to do. */ + /* + * Try to get a job to do. + * + * The lwlock acquisition also provides the necessary memory barrier + * to ensure that we don't see an outdated data in the handle. + */ LWLockAcquire(AioWorkerSubmissionQueueLock, LW_EXCLUSIVE); if ((io_index = pgaio_worker_submission_queue_consume()) == UINT32_MAX) { |