From: Sage Weil <sage@redhat.com>
Date: Mon, 3 Apr 2017 20:54:23 +0000 (-0400)
Subject: os/bluestore: do not wake kv thread if only deferred events pending
X-Git-Tag: v12.0.2~153^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=4652f34c5feb6f22f207fd08ad07410fff2a9d2b;p=ceph.git

os/bluestore: do not wake kv thread if only deferred events pending

No need to wake up if there is only deferred work; we can do
it lazily.

Signed-off-by: Sage Weil <sage@redhat.com>
---

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index 09c30c2b56b4..8bdee10a504c 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -7701,8 +7701,8 @@ void BlueStore::_kv_sync_thread()
   while (true) {
     assert(kv_committing.empty());
     if (kv_queue.empty() &&
-	deferred_done_queue.empty() &&
-	deferred_stable_queue.empty()) {
+	((deferred_done_queue.empty() && deferred_stable_queue.empty()) ||
+	 !deferred_aggressive)) {
       if (kv_stop)
 	break;
       dout(20) << __func__ << " sleep" << dendl;