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ceph: handle SESSION_FORCE_RO message

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mark session as readonly and wake up all cap waiters.

Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng
2015-01-05 11:04:04 +08:00
committed by Ilya Dryomov
parent f646912d10
commit 03f4fcb028
4 changed files with 27 additions and 0 deletions
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10
fs/ceph/mds_client.c
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@@ -2580,6 +2580,14 @@ static void handle_session(struct ceph_mds_session *session,
send_flushmsg_ack(mdsc, session, seq);
break;
case CEPH_SESSION_FORCE_RO:
dout("force_session_readonly %p\n", session);
spin_lock(&session->s_cap_lock);
session->s_readonly = true;
spin_unlock(&session->s_cap_lock);
wake_up_session_caps(session, 0);
break;
default:
pr_err("mdsc_handle_session bad op %d mds%d\n", op, mds);
WARN_ON(1);
@@ -2791,6 +2799,8 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc,
spin_unlock(&session->s_gen_ttl_lock);
spin_lock(&session->s_cap_lock);
/* don't know if session is readonly */
session->s_readonly = 0;
/*
* notify __ceph_remove_cap() that we are composing cap reconnect.
* If a cap get released before being added to the cap reconnect,