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Subject[PATCH 3.12 53/72] ceph: protect kick_requests() with mdsc->mutex
Date
From: "Yan, Zheng" <ukernel@gmail.com>

3.12-stable review patch. If anyone has any objections, please let me know.

===============

commit 656e4382948d4b2c81bdaf707f1400f53eff2625 upstream.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Sage Weil <sage@redhat.com>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
fs/ceph/mds_client.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 3e07f82a3c9d..16c7e4ab94f0 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -2389,9 +2389,8 @@ static void handle_session(struct ceph_mds_session *session,
if (session->s_state == CEPH_MDS_SESSION_RECONNECTING)
pr_info("mds%d reconnect denied\n", session->s_mds);
remove_session_caps(session);
- wake = 1; /* for good measure */
+ wake = 2; /* for good measure */
wake_up_all(&mdsc->session_close_wq);
- kick_requests(mdsc, mds);
break;

case CEPH_SESSION_STALE:
@@ -2417,6 +2416,8 @@ static void handle_session(struct ceph_mds_session *session,
if (wake) {
mutex_lock(&mdsc->mutex);
__wake_requests(mdsc, &session->s_waiting);
+ if (wake == 2)
+ kick_requests(mdsc, mds);
mutex_unlock(&mdsc->mutex);
}
return;
--
2.6.3


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