diff options
| author | Yan, Zheng <zyan@redhat.com> | 2017-06-05 05:07:28 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2017-07-07 17:25:13 +0200 |
| commit | 92e57e6287cc7402487edf3eb09c8a7b36dad63f (patch) | |
| tree | e1a659c11bb69381e71c98828aa871505ada3820 | |
| parent | ceph: cleanup writepage_nounlock() (diff) | |
| download | linux-92e57e6287cc7402487edf3eb09c8a7b36dad63f.tar.xz linux-92e57e6287cc7402487edf3eb09c8a7b36dad63f.zip | |
ceph: don't re-send interrupted flock request
Don't re-send interrupted flock request in cases of mds failover
and receiving request forward. Because corresponding 'lock intr'
request may have been finished, it won't get re-sent.
Link: http://tracker.ceph.com/issues/20170
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| -rw-r--r-- | fs/ceph/locks.c | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/fs/ceph/locks.c b/fs/ceph/locks.c index 6806dbeaee19..64ae74472046 100644 --- a/fs/ceph/locks.c +++ b/fs/ceph/locks.c @@ -127,6 +127,29 @@ static int ceph_lock_wait_for_completion(struct ceph_mds_client *mdsc, dout("ceph_lock_wait_for_completion: request %llu was interrupted\n", req->r_tid); + mutex_lock(&mdsc->mutex); + if (test_bit(CEPH_MDS_R_GOT_RESULT, &req->r_req_flags)) { + err = 0; + } else { + /* + * ensure we aren't running concurrently with + * ceph_fill_trace or ceph_readdir_prepopulate, which + * rely on locks (dir mutex) held by our caller. + */ + mutex_lock(&req->r_fill_mutex); + req->r_err = err; + set_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags); + mutex_unlock(&req->r_fill_mutex); + + if (!req->r_session) { + // haven't sent the request + err = 0; + } + } + mutex_unlock(&mdsc->mutex); + if (!err) + return 0; + intr_req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_SETFILELOCK, USE_AUTH_MDS); if (IS_ERR(intr_req)) @@ -146,7 +169,7 @@ static int ceph_lock_wait_for_completion(struct ceph_mds_client *mdsc, if (err && err != -ERESTARTSYS) return err; - wait_for_completion(&req->r_completion); + wait_for_completion_killable(&req->r_safe_completion); return 0; } |