linux-kernel - [v2] ceph: if we are blacklisted, __do

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Message-Id: <20200417093626.10892-1-gmayyyha@gmail.com>
Date:   Fri, 17 Apr 2020 17:36:26 +0800
From:   Yanhu Cao <gmayyyha@...il.com>
To:     jlayton@...nel.org
Cc:     sage@...hat.com, idryomov@...il.com, ceph-devel@...r.kernel.org,
        linux-kernel@...r.kernel.org, Yanhu Cao <gmayyyha@...il.com>
Subject: [v2] ceph: if we are blacklisted, __do_request returns directly

If we mount cephfs by the recover_session option,
__do_request can return directly until the client automatically reconnects.

Signed-off-by: Yanhu Cao <gmayyyha@...il.com>
---
 fs/ceph/mds_client.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 486f91f9685b..e6cda256b136 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -2708,6 +2708,12 @@ static void __do_request(struct ceph_mds_client *mdsc,
 
 	put_request_session(req);
 
+	if (mdsc->fsc->blacklisted &&
+	    ceph_test_mount_opt(mdsc->fsc, CLEANRECOVER)) {
+		err = -EACCES;
+		goto finish;
+	}
+
 	mds = __choose_mds(mdsc, req, &random);
 	if (mds < 0 ||
 	    ceph_mdsmap_get_state(mdsc->mdsmap, mds) < CEPH_MDS_STATE_ACTIVE) {
-- 
2.24.2 (Apple Git-127)