From 54a7b863dd3937893abae47b20b6f655b8e9252a Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Thu, 29 Dec 2011 15:25:42 +0100
Subject: [PATCH] journald: don't recheck /var availability more often than 30s

---
 src/journal/journald.c   | 16 +++++++++++++++-
 src/journal/sd-journal.h |  1 +
 2 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/journal/journald.c b/src/journal/journald.c
index 1efe0420d..52cdc7058 100644
--- a/src/journal/journald.c
+++ b/src/journal/journald.c
@@ -51,6 +51,8 @@
 
 #define RECHECK_AVAILABLE_SPACE_USEC (30*USEC_PER_SEC)
 
+#define RECHECK_VAR_AVAILABLE_USEC (30*USEC_PER_SEC)
+
 typedef struct StdoutStream StdoutStream;
 
 typedef struct Server {
@@ -78,6 +80,8 @@ typedef struct Server {
         uint64_t cached_available_space;
         usec_t cached_available_space_timestamp;
 
+        uint64_t var_available_timestamp;
+
         LIST_HEAD(StdoutStream, stdout_streams);
         unsigned n_stdout_streams;
 } Server;
@@ -1200,12 +1204,22 @@ static int server_flush_to_var(Server *s) {
         int r;
         sd_id128_t machine;
         sd_journal *j;
+        usec_t ts;
 
         assert(s);
 
+        if (!s->runtime_journal)
+                return 0;
+
+        ts = now(CLOCK_MONOTONIC);
+        if (s->var_available_timestamp + RECHECK_VAR_AVAILABLE_USEC > ts)
+                return 0;
+
+        s->var_available_timestamp = ts;
+
         system_journal_open(s);
 
-        if (!s->system_journal || !s->runtime_journal)
+        if (!s->system_journal)
                 return 0;
 
         r = sd_id128_get_machine(&machine);
diff --git a/src/journal/sd-journal.h b/src/journal/sd-journal.h
index f6b1c955f..97f9f0fa1 100644
--- a/src/journal/sd-journal.h
+++ b/src/journal/sd-journal.h
@@ -36,6 +36,7 @@
  *   - accelerate looking for "all hostnames" and suchlike.
  *   - hookup with systemctl
  *   - handle incomplete header
+ *   - write unit files
  *
  *   - local deserializer
  *   - http server
-- 
2.30.2