diff options
| -rw-r--r-- | fs/nfsd/nfs4layouts.c | 35 |
1 files changed, 25 insertions, 10 deletions
diff --git a/fs/nfsd/nfs4layouts.c b/fs/nfsd/nfs4layouts.c index fec49febb75b..76c13b0228b1 100644 --- a/fs/nfsd/nfs4layouts.c +++ b/fs/nfsd/nfs4layouts.c @@ -623,24 +623,39 @@ nfsd4_cb_layout_done(struct nfsd4_callback *cb, struct rpc_task *task) { struct nfs4_layout_stateid *ls = container_of(cb, struct nfs4_layout_stateid, ls_recall); + struct nfsd_net *nn; + ktime_t now, cutoff; LIST_HEAD(reaplist); + switch (task->tk_status) { case 0: - return 1; + case -NFS4ERR_DELAY: + /* + * Anything left? If not, then call it done. Note that we don't + * take the spinlock since this is an optimization and nothing + * should get added until the cb counter goes to zero. + */ + if (list_empty(&ls->ls_layouts)) + return 1; + + /* Poll the client until it's done with the layout */ + now = ktime_get(); + nn = net_generic(ls->ls_stid.sc_client->net, nfsd_net_id); + + /* Client gets 2 lease periods to return it */ + cutoff = ktime_add_ns(task->tk_start, + nn->nfsd4_lease * NSEC_PER_SEC * 2); + + if (ktime_before(now, cutoff)) { + rpc_delay(task, HZ/100); /* 10 mili-seconds */ + return 0; + } + /* Fallthrough */ case -NFS4ERR_NOMATCHING_LAYOUT: trace_layout_recall_done(&ls->ls_stid.sc_stateid); task->tk_status = 0; return 1; - case -NFS4ERR_DELAY: - /* Poll the client until it's done with the layout */ - /* FIXME: cap number of retries. - * The pnfs standard states that we need to only expire - * the client after at-least "lease time" .eg lease-time * 2 - * when failing to communicate a recall - */ - rpc_delay(task, HZ/100); /* 10 mili-seconds */ - return 0; default: /* * Unknown error or non-responding client, we'll need to fence. |