From: Lennart Poettering <lennart@poettering.net>
Date: Fri, 26 Oct 2012 18:25:36 +0000 (+0200)
Subject: journal: special case the trivial cache chain cache entry
X-Git-Tag: v196~214
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=34741aa3e2ee1e67a4cc735b7492aec13f0d822c

journal: special case the trivial cache chain cache entry
---

diff --git a/src/journal/journal-file.c b/src/journal/journal-file.c
index 6c9deacf2..3df099dbd 100644
--- a/src/journal/journal-file.c
+++ b/src/journal/journal-file.c
@@ -1328,6 +1328,11 @@ static void chain_cache_put(
                 uint64_t total) {
 
         if (!ci) {
+                /* If the chain item to cache for this chain is the
+                 * first one it's not worth caching anything */
+                if (array == first)
+                        return;
+
                 if (hashmap_size(h) >= CHAIN_CACHE_MAX)
                         ci = hashmap_steal_first(h);
                 else {