From 27ac80ee91287b41ddc16d6ad8a02ce31380f9f9 Mon Sep 17 00:00:00 2001
From: sageweil <sageweil@29311d96-e01e-0410-9327-a35deaab8ce9>
Date: Thu, 1 Mar 2007 16:37:00 +0000
Subject: [PATCH] comment

git-svn-id: https://ceph.svn.sf.net/svnroot/ceph@1148 29311d96-e01e-0410-9327-a35deaab8ce9
---
 trunk/ceph/osdc/ObjectCacher.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/trunk/ceph/osdc/ObjectCacher.cc b/trunk/ceph/osdc/ObjectCacher.cc
index e2520f595096d..46bd1fb416ca7 100644
--- a/trunk/ceph/osdc/ObjectCacher.cc
+++ b/trunk/ceph/osdc/ObjectCacher.cc
@@ -638,6 +638,11 @@ void ObjectCacher::flush(off_t amount)
 
   dout(10) << "flush " << amount << endl;
   
+  /*
+   * NOTE: we aren't actually pulling things off the LRU here, just looking at the
+   * tail item.  Then we call bh_write, which moves it to the other LRU, so that we
+   * can call lru_dirty.lru_get_next_expire() again.
+   */
   off_t did = 0;
   while (amount == 0 || did < amount) {
     BufferHead *bh = (BufferHead*) lru_dirty.lru_get_next_expire();
-- 
2.39.5