diff options
Diffstat (limited to 'src/backend/access/transam/xlog.c')
| -rw-r--r-- | src/backend/access/transam/xlog.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c index 7f63185b1cc..508970a751d 100644 --- a/src/backend/access/transam/xlog.c +++ b/src/backend/access/transam/xlog.c @@ -1842,15 +1842,14 @@ WakeupWaiters(XLogRecPtr EndPos) slot->xlogInsertingAt = EndPos; /* - * See if there are any waiters that need to be woken up. + * See if there are any LW_WAIT_UNTIL_FREE waiters that need to be woken + * up. They are always in the front of the queue. */ head = slot->head; - if (head != NULL) + if (head != NULL && head->lwWaitMode == LW_WAIT_UNTIL_FREE) { proc = head; - - /* LW_WAIT_UNTIL_FREE waiters are always in the front of the queue */ next = proc->lwWaitLink; while (next && next->lwWaitMode == LW_WAIT_UNTIL_FREE) { @@ -1862,6 +1861,8 @@ WakeupWaiters(XLogRecPtr EndPos) slot->head = next; proc->lwWaitLink = NULL; } + else + head = NULL; /* We are done updating shared state of the lock itself. */ SpinLockRelease(&slot->mutex); |