diff options
Diffstat (limited to 'src/backend/storage/ipc/standby.c')
| -rw-r--r-- | src/backend/storage/ipc/standby.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/backend/storage/ipc/standby.c b/src/backend/storage/ipc/standby.c index 4ea3cf1f5cb..92d9027776c 100644 --- a/src/backend/storage/ipc/standby.c +++ b/src/backend/storage/ipc/standby.c @@ -519,7 +519,14 @@ ResolveRecoveryConflictWithBufferPin(void) enable_timeouts(timeouts, 2); } - /* Wait to be signaled by UnpinBuffer() */ + /* + * Wait to be signaled by UnpinBuffer(). + * + * We assume that only UnpinBuffer() and the timeout requests established + * above can wake us up here. WakeupRecovery() called by walreceiver or + * SIGHUP signal handler, etc cannot do that because it uses the different + * latch from that ProcWaitForSignal() waits on. + */ ProcWaitForSignal(PG_WAIT_BUFFER_PIN); /* |