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authorSage Weil <sage@newdream.net>2010-02-25 12:38:57 -0800
committerSage Weil <sage@newdream.net>2010-02-25 12:38:57 -0800
commit161fd65ac934608345aed35226fc889ea3b0b500 (patch)
tree7e216c47fde0c06b0349adabe1d1363d9b71e74b /fs
parent88d892a37fc231ab2aa3b1c40ca9d67224616594 (diff)
downloadop-kernel-dev-161fd65ac934608345aed35226fc889ea3b0b500.zip
op-kernel-dev-161fd65ac934608345aed35226fc889ea3b0b500.tar.gz
ceph: invalidate_authorizer without con->mutex held
This fixes lock ABBA inversion, as the ->invalidate_authorizer() op may need to take a lock (or even call back into the messenger). Signed-off-by: Sage Weil <sage@newdream.net>
Diffstat (limited to 'fs')
-rw-r--r--fs/ceph/messenger.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/fs/ceph/messenger.c b/fs/ceph/messenger.c
index fdda707..9ea7b76 100644
--- a/fs/ceph/messenger.c
+++ b/fs/ceph/messenger.c
@@ -1853,14 +1853,6 @@ static void ceph_fault(struct ceph_connection *con)
con->in_msg = NULL;
}
- /*
- * in case we faulted due to authentication, invalidate our
- * current tickets so that we can get new ones.
- */
- if (con->auth_retry && con->ops->invalidate_authorizer) {
- dout("calling invalidate_authorizer()\n");
- con->ops->invalidate_authorizer(con);
- }
/* If there are no messages in the queue, place the connection
* in a STANDBY state (i.e., don't try to reconnect just yet). */
@@ -1890,6 +1882,15 @@ static void ceph_fault(struct ceph_connection *con)
out_unlock:
mutex_unlock(&con->mutex);
out:
+ /*
+ * in case we faulted due to authentication, invalidate our
+ * current tickets so that we can get new ones.
+ */
+ if (con->auth_retry && con->ops->invalidate_authorizer) {
+ dout("calling invalidate_authorizer()\n");
+ con->ops->invalidate_authorizer(con);
+ }
+
if (con->ops->fault)
con->ops->fault(con);
}
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