From d84793ec433cd74d7277c424dce03513a2c2595a Mon Sep 17 00:00:00 2001
From: Con Kolivas <kernel@kolivas.org>
Date: Tue, 29 Apr 2014 00:30:26 +1000
Subject: [PATCH] Make sure to not remove the last 2 workbases when ageing them

---
 src/stratifier.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/stratifier.c b/src/stratifier.c
index d3b7eeb4..559694a3 100644
--- a/src/stratifier.c
+++ b/src/stratifier.c
@@ -341,6 +341,8 @@ static void update_base(ckpool_t *ckp)
 	}
 	sprintf(wb->idstring, "%08x", wb->id);
 	HASH_ITER(hh, workbases, tmp, tmpa) {
+		if (HASH_COUNT(workbases) < 3)
+			break;
 		/*  Age old workbases older than 10 minutes old */
 		if (tmp->gentime < wb->gentime - 600) {
 			HASH_DEL(workbases, tmp);