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authorSage Weil <sage@inktank.com>2012-06-10 20:43:56 -0700
committerSage Weil <sage@inktank.com>2012-06-15 11:26:40 -0700
commitf3dea7edd3d449fe7a6d402c1ce56a294b985261 (patch)
treedd8d3334a38320ba7918ca9ccc6e8fe2f943c867 /net
parent89a86be0ce20022f6ede8bccec078dbb3d63caaa (diff)
downloadop-kernel-dev-f3dea7edd3d449fe7a6d402c1ce56a294b985261.zip
op-kernel-dev-f3dea7edd3d449fe7a6d402c1ce56a294b985261.tar.gz
libceph: flush msgr queue during mon_client shutdown
We need to flush the msgr workqueue during mon_client shutdown to ensure that any work affecting our embedded ceph_connection is finished so that we can be safely destroyed. Previously, we were flushing the work queue after osd_client shutdown and before mon_client shutdown to ensure that any osd connection refs to authorizers are flushed. Remove the redundant flush, and document in the comment that the mon_client flush is needed to cover that case as well. Signed-off-by: Sage Weil <sage@inktank.com> Reviewed-by: Alex Elder <elder@inktank.com>
Diffstat (limited to 'net')
-rw-r--r--net/ceph/ceph_common.c7
-rw-r--r--net/ceph/mon_client.c8
2 files changed, 8 insertions, 7 deletions
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index 2de3ea1..c815f31 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -498,13 +498,6 @@ void ceph_destroy_client(struct ceph_client *client)
/* unmount */
ceph_osdc_stop(&client->osdc);
- /*
- * make sure osd connections close out before destroying the
- * auth module, which is needed to free those connections'
- * ceph_authorizers.
- */
- ceph_msgr_flush();
-
ceph_monc_stop(&client->monc);
ceph_debugfs_client_cleanup(client);
diff --git a/net/ceph/mon_client.c b/net/ceph/mon_client.c
index 7a16750..dc16595 100644
--- a/net/ceph/mon_client.c
+++ b/net/ceph/mon_client.c
@@ -838,6 +838,14 @@ void ceph_monc_stop(struct ceph_mon_client *monc)
mutex_unlock(&monc->mutex);
+ /*
+ * flush msgr queue before we destroy ourselves to ensure that:
+ * - any work that references our embedded con is finished.
+ * - any osd_client or other work that may reference an authorizer
+ * finishes before we shut down the auth subsystem.
+ */
+ ceph_msgr_flush();
+
ceph_auth_destroy(monc->auth);
ceph_msg_put(monc->m_auth);
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