From 48e3b00f42ae2f09f100c3aa603003724bd256db Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@newdream.net>
Date: Mon, 8 Feb 2010 14:59:33 -0800
Subject: [PATCH] osd: carry ondisk_read_lock if prepare_transaction may_read()

---
 src/osd/ReplicatedPG.cc | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/osd/ReplicatedPG.cc b/src/osd/ReplicatedPG.cc
index 846644ddcdf1..d8ee59c49af0 100644
--- a/src/osd/ReplicatedPG.cc
+++ b/src/osd/ReplicatedPG.cc
@@ -577,7 +577,16 @@ void ReplicatedPG::do_op(MOSDOp *op)
 
   // we are acker.
   if (!noop) {
+
+    if (op->may_read()) {
+      dout(10) << " taking ondisk_read_lock" << dendl;
+      obc->ondisk_read_lock();
+    }
     int result = prepare_transaction(ctx);
+    if (op->may_read()) {
+      dout(10) << " dropping ondisk_read_lock" << dendl;
+      obc->ondisk_read_unlock();
+    }
 
     if (result >= 0)
       log_op_stats(soid, ctx);
-- 
2.47.3